FORM 2
THE PATENTS ACT 1970
[39 OF 1970]
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION [See section 10; rule 13]
TITLE OF THE INVENTION
“MOUNTING DEVICE AND METHOD OF USING THE SAME”
APPLICANT(S)
TATA MOTORS LIMITED
an Indian company.
Bombay house, 24 Homi Mody Street,
Hutatma Chowk, Mumbai 400 001,
Maharashtra, INDIA.
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed.

TECHNICAL FIELD OF THE INVENTION
Present invention, in general, relates to a mounting device. Particularly, but not exclusively, the present invention relates to the mounting device and a method of fastening at least two structural members using the same.
BACKGROUND OF THE INVENTION
Conventionally, a top cover for an engine cylinder head and/or cylinder head cover serves different applications when assembled together. Particularly, the top cover, when fastened to the cylinder head and/or cylinder head cover, is structurally configured to seal off a cylinder head space and/or cylinder head cover space from water or dust entry, thereby protecting injectors, and the like from corrosion and moisture ingress in electrical connectors. In a different known application, the top cover is assembled on the cylinder head and/or cylinder head cover for providing aesthetic appearance for the engine.
Existing mounting mechanisms provided for assembling the top cover to the cylinder head and/or cylinder head cover involves the use of a plurality of long brackets, and a plurality of fasteners such as bolt, isolator bolt, isolator with metal sleeve, or stud with rubber washer, and the like. In particular, the top cover is detachably tightened to cylinder head and/or cylinder head cover through the plurality of fasteners. Typically, the type of fastener selected for fastening the top cover with the cylinder head and/or cylinder head, in particular, is determined based on its stiffness factor and structural configuration for facilitating a desired and secure fitment between the top cover and the cylinder head and/or cylinder head.
However, the existing mounting mechanisms using the plurality of long brackets for mounting through the plurality of fasteners are known to cause

damage and fatigue failure, particularly in instances of sudden vehicle acceleration/deceleration/braking and during vehicle running on rough road conditions, heavy shock vibrations are generated or load is exerted to engine from a vehicle chassis and this gets transmitted from the cylinder head and/or the cylinder head cover to engine top cover through long overhang brackets, thereby creating a lot of vibrations and noise. As a result, a significant vibration gets transmitted from the cylinder head and/or the cylinder head cover to engine top cover through long overhang brackets. This further substantially deteriorates durability of the top cover, the long brackets and the plurality of fasteners, thereby resulting in high cost and frequent replacement of top cover or the entire mounting mechanism.
Another conventional mounting mechanisms requires a substantial structural modification in the cylinder head /cylinder head cover and top cover for accommodating long overhang brackets and different fasteners before assembling with cylinder heads of different engine sizes and capacity. Moreover, due to limits and constraints in modifying cylinder head and/or the cylinder head cover surrounding parts, the cylinder head and/or the cylinder head cover and top cover are subjected to modification to achieve secure fitment. However, in instances, such as for heavy capacity engine, the structural modification of top cover involves a plurality of additional mounting assemblies required for assembling the top cover with the cylinder head with long brackets. This further leads to packaging limitation on a vehicle due to a higher positioning of the top cover.
Present invention is directed to overcome one or more limitations stated above or any other limitations associated with the known arts.

SUMMARY OF THE INVENTION
One or more shortcomings of the prior art are overcome by a system as claimed and additional advantages are provided through the device and a system as claimed in the present invention. Additional features and advantages are realized through the techniques of the present invention. Other embodiments and aspects of the invention are described in detail herein and are considered a part of the claimed invention.
In one non-limiting embodiment of the invention, a mounting device is configured for fastening at least two structural members. The mounting device comprises a fastening assembly and a decoupling structure molded radially across at least a portion of the fastening assembly. The fastening assembly comprises a first member including a head portion and a shank portion. The head portion includes a predetermined cut-out profile. Further, the fastening assembly includes a second member including a head region and a shank region. The head region includes a projecting element extending from at least a portion thereof in a direction opposite to the shank region. The first member and the second member are coaxially aligned and oppositely oriented to each other for movably fitting at least a portion of the projecting element into the predetermined cut-out profile such that a predefined clearance region is maintained therebetween. Further, the fastening assembly includes the plurality of fastening members including a first fastening member and a second fastening member. Each of the first and second fastening members are fixedly attached to the first member and the second member, respectively.
In an embodiment, the first fastening member being fixedly attached to the shank portion is axially offset from the head portion by a first offset distance, and the second fastening member being fixedly attached to the shank region is

axially offset from the shank region by a second offset distance. The first and second offset distances are substantially equivalent.
In an embodiment, the at least a portion of the fastening assembly is a predefined region enclosed between bottom faces of the first fastening member and the second fastening member, respectively.
In an embodiment, the decoupling structure includes converging opposite portions and a housing portion. Each converging opposite portions conforms to a predefined profile of first fastening member and the second fastening member. Each of the converging opposite portions abuts against bottom faces of the first fastening member and the second fastening member of the fastener assembly, respectively.
In an embodiment, the projecting element comprises a top portion and a bottom surface, each with a predetermined varying diameter and length.
In an embodiment of the present invention, the predetermined cut-out profile includes at least a tapered region including at least one inner edge. The predefined clearance region is defined between a tip region of the projecting element and the at least one inner edge.
In an embodiment, the predefined clearance region is configured to impart an axial movement of the top portion of the projecting element.
In an embodiment, the first and the second fastening members are metallic hex bolts.
In an embodiment, the decoupling structure is made up of polymer, rubber, elastomer, Fluoroelastomer (FKM), alpha-ethyl mescaline (AEM), rubber compounds of varying hardness values and the like.

In an embodiment of the present invention, the at least two structural members includes a first structural member and a second structural member. The first structural member includes a plurality of a fastener receiving holes and the second structural member includes a plurality of a boss members.
In an embodiment of the present invention, each of the shank portion (316a) and the shank region (302a) of the first member (316) and the second member (302), respectively, includes a threaded structure having threads formed along a length thereof.
In an embodiment of the present invention, during assembling the first structural member (104) and the second structural member (106) together, the shank region (302a) through the threaded structure is inserted into at least one fastener receiving hole (110) and tightened thereto through the at least one fastening element (102). Further, the shank portion (316a) through the threaded structure is tap-fitted into at least one of the boss member (108) formed integrally with the second structural member.
In an embodiment, the at least one fastening element (102) comprises threaded grooves internally formed therein.
In an embodiment, the first structural component is an engine top cover and the second structural component is an engine cylinder head cover.
In another embodiment, a method of fastening at least two structural members using a plurality of mounting devices. At least one mounting device is configured for fastening at least two structural members. The at least one mounting device includes a fastening assembly and a decoupling structure molded radially across at least a portion of the fastening assembly. The fastening assembly comprises a first member including a head portion and a

shank portion. The head portion includes a predetermined cut-out profile. Further, the fastening assembly includes a second member including a head region and a shank region. The head region includes a projecting element extending from at least a portion thereof in a direction opposite to the shank region. The first member and the second member are coaxially aligned and oppositely oriented to each other for movably fitting at least a portion of the projecting element into the predetermined cut-out profile such that a predefined clearance region is maintained therebetween. Further, the fastening assembly includes the plurality of fastening members including a first fastening member and a second fastening member. Each of the first and second fastening members are fixedly attached to the first member and the second member, respectively. The method includes inserting the shank region, having the threaded structure, into at least one fastener receiving hole integrally formed in at least a portion of the first structural member. Further, the shank region having the threaded structure, is tightened to the second structural member through at least one fastening element (102). In further step, the shank portion (302a) with the threaded structure is tap-fitted into at least one of the boss member (108) formed integrally with the second structural member (106).
An object of the present invention is to provide an improved mounting device for detachably securing at least two structural members without using long brackets to hold top cover and is also configured for substantially dampening noise and vibration generated during an engine running condition.
Another object of the present invention is to provide the improved mounting device that is simple in construction, cost-effective and compact with an enhanced stiffness and easy in application for assembling at least two structural members.

Yet another object of the present invention is to provide an improved method of fastening, using the improved mounting device that facilitates in a compact mounting of the at least two structural members together for achieving an enhanced dampening and vibration isolation.
Still another object of the present invention is to provide the improved mounting device which discloses a stiffened, decoupled and unitized bi-bolt assembly.
The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The novel features and characteristics of the invention are set forth in the appended claims. The invention itself, however, as well as a preferred mode of use, further objectives, and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiments when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:
Figure, la illustrates a perspective view of an assembly of at least two structural members, in accordance with an embodiment of the present invention.

Figure. 1b illustrates an exploded perspective view of the assembly of at least two structural members and a plurality of mounting devices, in accordance with an embodiment of the present invention.
Figure. 2 illustrates a sectional view of the assembly of at least two structural members and the plurality of mounting devices of Figure 1 taken along a line AA’, in accordance with an embodiment of the present invention.
Figure. 3 is perspective view of at least one mounting device, in accordance with an embodiment of the present invention.
Figure. 4 is an exploded perspective view of the at least one mounting device of Figure 3, in accordance with an embodiment of the present invention.
Figure. 5 is a sectional view of the at least one mounting device of Figure 3 taken along XX’ and along a length YY’, in accordance with an embodiment of the present invention.
Figure. 6 illustrates a method of fastening at least two structural members including a cylinder head cover and a top cover of a vehicle internal combustion engine using at least one mounting device, in accordance with another embodiment of present invention.
The figures depict embodiments of the invention for purposes of illustration only. one skilled in the art will readily recognize from the following description that alternative embodiments of the system and method illustrated herein may be employed without departing from the principles of the invention described herein.
DETAILED DESCRIPTION OF THE INVENTION
The foregoing has broadly outlined the features and technical advantages of the present invention in order that the detailed description of the invention that follows may be better understood. Additional features and advantages of

the invention will be described hereinafter which forms the subject of the claims of the invention. It should be appreciated by those skilled in the art that, the conception and specific embodiments disclosed may be readily utilized as a basis for modifying other devices, systems, assemblies and mechanisms for carrying out the same purposes of the present invention. It should also be realized by those skilled in the art that, such equivalent constructions do not depart from the scope of the invention as set forth in the appended claims. The novel features which are believed to be characteristics of the invention, to its device or system, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present invention.
The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusions, such that a system or a device that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
Reference will now be made to the exemplary embodiments of the invention, as illustrated in the accompanying drawings. Wherever possible, same numerals have been used to refer to the same or like parts. The following paragraphs describe the present invention with reference to Figures. 1-6. It is to be noted that the mounting device and method of using the same may be employed in fastening in at least two structural members together not limited to a vehicular applications.

Figure, la illustrates a perspective view of an assembly of at least two structural members (104), (106), in accordance with an embodiment of the present invention. In an embodiment, the at least two structural members (104) includes a first structural component (104) and a second structural component (106). The first structural component (104) is a top cover and the second structural component (106) is a cylinder head cover of an internal combustion engine for a vehicle. In an illustrated embodiment, the first structural component (104) is securely fastened to the second structural component using a plurality of mounting devices (100) (shown in Figures lb through 5) and through a plurality of fastening elements (102). In an illustrated embodiment, the plurality of fastening elements (102) includes a nyloc hex flange nut, nut assembly, and the like
Figure, lb illustrates an exploded perspective view of the assembly of at least two structural members (104), (106), and a plurality of mounting devices (100), in accordance with an embodiment of the present invention. In illustrated embodiment, the top cover being the first structural member (104) includes a plurality of a fastener receiving holes (110), and the cylinder head cover being the second structural member includes a plurality of a boss members (108). As per an illustrated embodiment of the present invention, for facilitating fastening of the top cover and the cylinder head cover together, at least a portion of the mounting device (100) is inserted into at least one fastener receiving hole (110) and tightened thereto through at least one fastening element (102) such as the nyloc hex flange nut, nut assembly, and the like. In an illustrated embodiment, the at least one fastening element (102) comprises threaded grooves internally formed along a length thereof.
Further, at least another portion of the mounting device (100) is tap-fitted into at least one of the boss member (108) formed integrally with the cylinder head cover (106).

Figure. 2 illustrates a sectional view of the assembly of at least two structural members (104), (106), and a plurality of mounting devices (100) of Figure 1 taken along a line AA’, in accordance with an embodiment of the present invention. In an illustrated embodiment, the first structural member (104) is a top cover and the second structural member (106) is a cylinder head cover. In an illustrated embodiment, the top cover and the cylinder head cover are fastened together through a plurality of the mounting devices (100). In an illustrated embodiment, the at least one mounting device (100) is detachably tightened to the first structural member (104) through the at least one fastening element (102), whereas the at least another portion of the mounting device (100) is tap-fitted into the at least one of the boss member (108).
Figure. 3 is perspective view of at least one mounting device (100), in accordance with an embodiment of the present invention. In an illustrated embodiment, the at least one mounting device (100) is configured for fastening the at least two structural members (104), (106) (shown in Figures 1a, 1b and 2). The mounting device (100) includes a fastening assembly (300) and a decoupling structure (306) molded radially across at least a portion of the fastening assembly (300). In an illustrated embodiment, the fastening assembly (300) includes a first member (316) and a second member (302).
In an illustrated embodiment, the fastening assembly (300) further includes a plurality of fastening members (314), (304). The plurality of fastening members (314), (304) includes a first fastening member (314) and a second fastening member (304). Each of the first and second fastening members (314), (304) are fixedly attached to the first member (316) and the second member (302), respectively.
Further, in an illustrated embodiment, the decoupling structure (306) includes converging opposite portions (308), (312) and a housing portion (310). In an

illustrated embodiment, each converging opposite portions (308), (312) conforms to a predefined profile of the each of the first fastening member (314) and the second fastening member (304). More specifically, each of the converging opposite portions (308), (312) is configured to abut against the bottom faces (314a), (304a) of the first fastening member (314) and the second fastening member (304) of the fastener assembly (300), respectively. With said conforming profiles, a predefined surface area at a metal-rubber contact formed between the decoupling structure (306) and the bottom faces (314a), (304a) of the each of the first and second fastening members (314), (304) is substantially increased. As a result, a shear stress exerted at the metal-rubber contact is significantly reduced during vibration or a pressure exerted from a predetermined load to at least two structural component (104), (106) (shown in Figures 1 to 3). This further is advantageous in providing an enhanced durability for the at least one mounting device due to an improved compression for the decoupling structure (306) with the fastening assembly (300).
Figure. 4 is an exploded perspective view of the at least one mounting device (100) of Figure 3, in accordance with an embodiment of the present invention. In an illustrated embodiment, the mounting device (100) includes a fastening assembly (300) and the decoupling structure (306) molded radially across the at least a portion of the fastening assembly (300). The fastening assembly (300) includes the first member (316). In an illustrated embodiment, the first member (316) includes a head portion (316b) and a shank portion (316a). The head portion (316b) includes a predetermined cut-out profile (402). In an illustrated embodiment, the predetermined cut-out profile (402) includes at least a tapered region (403) that includes at least one inner edge (402a).
In an illustrated embodiment, the fastening assembly (300) further includes the second member (302). The second member (302) includes a head region

(302b) and a shank region (302a). The head region (302b) includes a projecting element (400) that extends from at least a portion thereof in a direction opposite to the shank region (302a). In particular, the projecting element (400) is integrally formed with the at least a portion of the head region (302b).
Further as illustrated by Figure 4, the first member (302) and the second member (316) are coaxially aligned and oppositely oriented to each other along a axis XX’ for movably fitting at least a portion of the projecting element (400) into the predetermined cut-out profile (402) such that a predefined clearance region (501) (shown in Figure 5) is maintained therebetween. The predefined clearance region (501) is defined between a tip region (404) of the projecting element (400) and the at least one inner edge (402a).
In an illustrated embodiment, the fastening assembly (300) further includes the plurality of fastening members (314), (304). The plurality of fastening members (314), (304) includes the first fastening member (314) and the second fastening member (304). Each of the first and second fastening members (314), (304) are configured to be fixedly attached to the first member (316) and the second member (302), respectively.
Figure. 5 is a sectional view of the at least one mounting device (100) of Figure 3 taken along a transverse axis XX’ and along a length YY’, in accordance with an embodiment of the present invention. In an illustrated embodiment, the at least one mounting device (100) includes the fastening assembly (300). The fastening assembly (300) includes the first member (316) and the second member (302). In an illustrated embodiment, the first member (316) includes the head portion (316b) and the shank portion (316a). The head portion (316b) includes the predetermined cut-out profile (402). Further, the second member (302) includes the head region (302b) and the shank region (302a).

The head region (302b) includes the projecting element (400) that extends from at least a portion thereof in a direction opposite to the shank region (302a). In an illustrated embodiment, the projecting element (400) comprises a top portion (502a) and a bottom surface (502b), each with a predetermined varying diameter and length.
In an illustrated embodiment, the first member (316) and the second member (302) are coaxially aligned and oppositely oriented to each other for movably fitting at least a portion of the projecting element (400) into the predetermined cut-out profile (402) such that the predefined clearance region is maintained therebetween. In an illustrated embodiment, the fastening assembly (300) further includes the first fastening member (314) and the second fastening member (304). Each of the first and second fastening members (314), (304) are fixedly attached to the first member and the second member, respectively.
Further, in an illustrated embodiment, the predetermined cut-out profile (402) includes the at least a tapered region (403) with the at least one inner edge (402a). More specifically, the predefined clearance region (501) is defined between a tip region of the projecting element (400) and the at least one inner edge (402a). In an illustrated embodiment, the predefined clearance region (501) comprises at least a molded portion of the decoupling structure. The predefined clearance region (501) along with the at least a molded portion is configured to impart an axial movement of the top portion (502a) of the projecting element (402).This facilitates in significant dampening of vibrations transmitted due to a pressure exerted from a load on the assembly of at least two structural members during engine running or operating condition of a structural assembly. Additionally, the axial movement of the top portion (502a) of the projecting element (402) relative to the clearance region is configured for significantly reducing a shear stress fatigue exerted on the at

least one mounting device (100). This results in an improved stiffness for the at least one mounting device (100) along a predetermined shear direction.
In an illustrated embodiment, the fastening assembly (300) further includes a plurality of fastening members (314), (304). In an illustrated embodiment, the first fastening member (314) is fixedly attached to the shank portion (316a) is axially offset from the head portion (316b) by a first offset distance (O). And the second fastening member (304) is fixedly attached to the shank region (302a) is axially offset from the head region (302b) by a second offset distance (O’). In an illustrated embodiment, the first and second offset distances (O) (O’) are substantially equivalent.
Further, in an illustrated embodiment, the decoupling structure (306) includes the converging opposite portions (308), (312) and the housing portion (310). The each converging opposite portions (308), (312) conforms to a predefined profile of first fastening member (314) and the second fastening member (304). In an illustrated embodiment, each of the converging opposite portions (308), (312) are configured to abut against the bottom faces (314a), (304a) of the first fastening member (314) and the second fastening member (304) of the fastener assembly (300), respectively.
Figure. 6 illustrates a method (100) of fastening at least two structural members (104), (106) including a cylinder head cover and a top cover of a vehicle internal combustion engine using at least one mounting device (100) , in accordance with another embodiment of present invention. In an illustrated embodiment, the method (600) including step 602, 604 and 606. At step 602, the shank region (316a) having the threaded structure is inserted into the at least one fastener receiving hole being integrally (110) formed in at least a portion of a first structural member (104). In further step 604, the shank region (316a) having the threaded structure is detachably tightened to the first structural member through at least one fastening element (102). In an

embodiment, the at least one fastening element (102) includes threaded grooves formed along a length thereof. The shank region (316a) with its threaded structure is securely tightened to the first structural member (103) through the at least one fastening element (102), to the first structural member (104). In particular, the shank region (316a) through its threaded structure is configured to be locked into the threaded grooves of the at least one fastening element (102), thereby facilitating a secure fitment of the mounting device (100) with the first structural member (104).
Further, at step 606, the shank portion (302a) of the second member (302) is tap-fitted into at least one of the boss member (108) formed integrally with the second structural member (106). In particular, the shank portion (302a) includes the threaded structure integrally formed along a length thereof. Further, the at least one of the boss member is configured with the threaded grooves. In an embodiment, the shank portion (302a) through its threaded structure is configured to be locked into the threaded grooves of the boss member (108), thereby providing s secure fitment of the mounting device (100) with the second structural member (106).
Equivalents:
With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be

interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to

systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
In addition, where features or aspects of the invention are described in terms of Markush groups, those skilled in the art will recognize that the invention is also thereby described in terms of any individual member or subgroup of members of the Markush group.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Referral Numerals:

Reference Number Description
100 Mounting device
102 A plurality of fastening elements
104 First structural member
106 Second structural member
108 A plurality of a boss members
110 A plurality of a fastener receiving holes
300 Fastening assembly
314, 304 A plurality of fastening members
314a, 304a Bottom faces
306 Decoupling structure
302 Second member
302b Head region
302a Shank region
308, 312 Converging opposite portions
310 Housing portion
316 First member
316b Head portion
316a Shank portion
400 Projecting element
402 Predetermined cut-out profile
402a At least one inner edge
403 At least a tapered region
404 A tip region of the projecting element
500 Predefined region
501 Predefined clearance region
502a Top portion of the projecting element

502b Bottom portion of the projecting element
600 Method of using a mounting device
602, 604, 606 Method steps
O First offset distance
O’ Second offset distance

We Claim:
1. A mounting device (100) for fastening at least two structural members (104), (106), the mounting device (100) comprising : a fastening assembly (300), the fastening assembly (300) comprising:
a first member (316) including a head portion (316b) and a shank portion (316a), the head portion (316b) including a predetermined cut-out profile (402);
a second member (302) including a head region (302b) and a shank region (302a), the head region (302b) including a projecting element (400) extending from at least a portion thereof in a direction opposite to the shank region (302a),
the first member (302) and the second member (316) coaxially aligned and oppositely oriented to each other along a axis BB’ for movably fitting at least a portion of the projecting element (400) into the predetermined cut-out profile (402) with a predefined clearance region (501) maintained therebetween; and
a plurality of fastening members (314), (304) including a first fastening member (314) and a second fastening member (304), each of the first and second fastening members (314), (304) fixedly attached to the first member (316) and the second member (302), respectively; and
a decoupling structure (306) molded radially across at least a portion of the fastening assembly (300).

2. The mounting device (100) as claimed in claim 1, wherein the first fastening member (314) fixedly attached to the shank portion (316a) is axially offset from the head portion (316b) by a first offset distance (O), and the second fastening member (304) fixedly attached to the shank region (302a) is axially offset from the head region (302b) by a second offset distance (O’), wherein the first and second offset distances (O) (O’) are substantially equivalent.
3. The mounting device (100) as claimed in claim 1, wherein the at least a portion of the fastening assembly (300) is a predefined region (500) enclosed between bottom faces (314a), (304a) of the first fastening member (314) and the second fastening member (304), respectively.
4. The mounting device (100) as claimed in claim 1, wherein the decoupling structure (306) includes converging opposite portions (308), (312) and a housing portion (310), wherein each converging opposite portions (308), (312) conforms to a predefined profile of first fastening member (314) and the second fastening member (304), and wherein each of the converging opposite portions (308), (312) abuts against the bottom faces (314a), (304a) of the first fastening member (314) and the second fastening member (304) of the fastener assembly (300), respectively.
5. The mounting device (100) as claimed in claim 1, wherein the projecting element (400) comprises a top portion (502a) and a bottom surface (502b), each with a predetermined varying diameter and length.
6. The mounting device (100) as claimed in claim 1, wherein the predetermined cut-out profile (402) comprises at least a tapered

region (403) including at least one inner edge (402a), and wherein the predefined clearance region (501) is defined between a tip region (404) of the projecting element (400) and the at least one inner edge (402a).
7. The mounting device (100) as claimed in claim 1, wherein the predefined clearance region (501) comprises at least a molded portion of the decoupling structure adapted therein.
8. The mounting device (100) as claimed in claim 1, wherein the predefined clearance region (501) along with the at least a molded portion is configured to impart an axial movement of the top portion (502a) of the projecting element (402).
9. The mounting device (100) as claimed in claim 1, wherein each of the first and the second fastening members (314), (304) are metallic hex bolts.
10. The mounting device (100) as claimed in claim 1, wherein the decoupling structure (306) is made up of polymer, rubber, elastomer, Fluoroelastomer (FKM), alpha-ethyl mescaline (AEM), rubber compounds of varying hardness values and the like.
11. The mounting , device (100) as claimed in claim 1, wherein the at least two structural members (104), (106) includes a first structural member (104) and a second structural member (106), and wherein the first structural member (104) includes a plurality of a fastener receiving holes (110) and the second structural member (106) includes a plurality of a boss members (108).

12. The mounting device (100) as claimed in claim 1, wherein each of the shank portion (316a) and the shank region (302a) of the first member (316) and the second member (302), respectively, comprises a threaded structure having threads formed along a length thereof.
13. The mounting device (100) as claimed in claim 1, wherein for assembling the first structural member (104) and a second structural member (106) together, the shank region (302a) through the threaded structure is inserted into at least one fastener receiving hole (110) and tightened thereto through at least one fastening element (102), and wherein the shank portion (316a) through the threaded structure of the second member (302) is tap-fitted into at least one of the boss member (108) formed integrally with the second structural member.
14. The mounting device (100) as claimed in claim 1, wherein the at least one fastening element (102) comprises threaded grooves interally formed therein.
15. The mounting device (100) as claimed in claim 1, wherein the first structural component (104) is an engine top cover and the second structural component (106) is an engine cylinder head cover.
16. A method of fastening at least two structural members (104), (106)
using a plurality of mounting devices (100), at least one mounting
device (100) comprising a fastening assembly (300), the fastening
assembly (300) comprising a first member (316) including a head
portion (316b) and a shank portion (316a), the head portion (316b)
including a predetermined cut-out profile (402); and a second member
(302) including a head region (302b) and a shank region (302a), the
head region (302b) including a projecting element (400) extending

from at least a portion thereof in a direction opposite to the shank region (302a), the first member (302) and the second member (316) coaxially aligned and oppositely oriented to each other along a axis BB’ for movably fitting at least a portion of the projecting element (400) into the predetermined cut-out profile (402) along a predefined clearance region (402a) formed therebetween; and a plurality of fastening members (314), (304) including a first fastening member (314) and a second fastening member (304), each of the first and second fastening members (314), (304) fixedly attached to the first member (316) and the second member (302), respectively; and a decoupling structure (306) molded radially across at least a portion of the fastening assembly (300), the method comprising:
inserting the shank region (316a), having the threaded structure, into at least one fastener receiving hole (110) formed integrally in at least a portion of a first structural member (104);
tightening the shank region (316a), having the threaded structure, to the first structural member (104) through the at least one fastening element (102); and
tap-fitting the shank portion (302a) with the threaded structure, into at least one of the boss member (108) formed integrally with the second structural member (106).
17. The method (600) as claimed in claim 1, wherein each of the shank portion (316a) and the shank region (302a) of the first member (316) and the second member (302), respectively, comprises a threaded structure having threads formed thereon.

18. The method (600) as claimed in claim 1, wherein for assembling the first structural member (104) and a second structural member (106) together, the shank region (302a) through the threaded structure is inserted into the at least one fastener receiving hole (110) and tightened thereto through at least one fastening element (102), and wherein and the shank portion (316a) through the threaded structure of the second member (302) is tap-fitted into at least one of the boss member (108) formed integrally with the second structural member.