FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)

TITLE OF THE INVENTION "HYDRAULIC PUMP MOUNTING ARRANGEMENT"
APPLICANTS
TATA MOTORS LIMITED, an Indian company
having its registered office at Bombay House,
24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
INVENTORS
Vishwakarma Shailesh M, Garg Ashwani,
and Pavan S. Cholkar
all are Indian nationals
of TATA MOTORS LIMITED,
an Indian company having its registered office
at 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
The present invention generally relates to vehicle hydraulic systems and more particularly relates an arrangement for mounting hydraulic pump on a vehicle.
BACKGROUND OF THE INVENTION
Automobiles are equipped with a hydraulic pump which provides power to hydraulic applications. Typically, the hydraulic pump is directly mounted on a prime mover so that the axial movement between them is nil. However, in vehicles utilizing a heavy duty hydraulic pump, due to heavy weight, of the order of one hundred kilogram (100 kg), of the hydraulic pump, it becomes difficult to mount the hydraulic pump directly on a prime mover. Further, mounting the heavy duty hydraulic pump on the prime mover also creates possibility of the failures of the PTO (Power Take-Off) as it is not equipped to carry the heavy weight, of the heavy duty hydraulic pump.
OBJECTS OF THE INVENTION
The objective of invention is to provide a reliable, simple and cost effective, hydraulic pump mounting arrangement.
Another object of the invention is to enable remote mounting of heavy duty hydraulic pump on a chassis.
Another object of the present invention is to provide a hydraulic pump mounting bracket for enabling mounting of the hydraulic pump on a vehicle chassis.
Further objects and features of the invention will become apparent from the following detailed description when considered in conjunction with the drawings.

SUMMARY OF THE INVENTION
The various embodiments of the present invention disclose a hydraulic pump mounting arrangement for an automobile having a chassis carrying an operating power source. The hydraulic pump mounting arrangement includes a propeller shaft driven by the operating power source of the automobile; a hydraulic pump connected to and driven by the propeller shaft; and a hydraulic pump mounting bracket adapted to be mounted on a longitudinal member of the chassis and hold the hydraulic pump, thereby supporting the hydraulic pump on the longitudinal member of the chassis.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 illustrates a top view of a hydraulic pump mounting arrangement for an automobile, according to an embodiment of the invention,
FIG. 2 illustrates a perspective view of the hydraulic pump mounting arrangement of FIG. 1, according to an embodiment of the invention,
FIG. 3 illustrates a perspective view of a hydraulic pump mounting bracket of the hydraulic pump mounting arrangement of FIG. 1, according to an embodiment of the invention,
FIG. 4 illustrates a perspective view of an of the hydraulic pump mounting arrangement of FIG. 1, according to an embodiment of the invention,
FIG. 5 illustrates a perspective view of a coupling flange an of the hydraulic pump mounting arrangement of FIG. 1, according to an embodiment of the invention, and
FIG. 6 illustrates a perspective view of a propeller shaft the hydraulic pump mounting arrangement of FIG. 1, according to an embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION
Referring now to the drawings wherein the showings are for the purpose of illustrating a preferred embodiment of the invention only, and not for the purpose of limiting the same.
FIG. 1 illustrates a top view of a hydraulic pump mounting arrangement 100 for an automobile 10, according to an embodiment of the invention. The automobile 10 may be any commercial or heavy duty vehicle with high load carrying capacity, such as, but not limited to, a dump truck, a ballast truck, a trailer truck and the like. The automobile 10 includes a chassis 12 having a pair of longitudinal members and a set of horizontal members. A power source 14 (also referred to as "prime mover," "internal combustion engine," or "operating power source" etc) along with a transmission system thereof is also supported on the chassis 12. Depending upon the type and application of the automobile 10, the chassis 12 may support a body and/or other utilities (not shown) such as, but not limited to, a crane, a winch or the like.
As per the present invention, the hydraulic pump mounting arrangement 100 includes a propeller shaft 102, best shown in FIG. 6. The propeller shaft 102 is driven by the power source 14 of the automobile 10, through the transmission. It may herein be noted that the propeller shaft 102 is different from the main propeller shaft of the automobile 10. The propeller shaft 102 is a power take-off (PTO) shaft. The propeller shaft 102 may be of a conventional configuration having knuckle joints at each of a first end portion 104 and a second end portion 106 thereof. The first end portion 104 is connected to the power source 14 of the automobile 10, through the transmission. More specifically, a coupling flange 108, best shown in FIG. 5, is connect the knuckle joint at the first end portion 104 of the propeller shaft 102 with an output shaft of the operating power source 14.
The second end portion 106 of the propeller shaft 102 is connected to a hydraulic pump 110. Therefore, the hydraulic pump 110 is driven by the propeller shaft 102.

The hydraulic pump 110 is mounted on one of the pair of longitudinal members by a hydraulic pump mounting bracket 200, best shown in FIG. 3.
An adapter 112, best shown in FIG. 4, is provided to connect the second end portion 106 of the propeller shaft 102 with the hydraulic pump 110. The adapter 112 has splines at end portion thereof. The splines of the adapter 112 engage with splined portion of a shaft of the hydraulic pump 110 to transfer torque from the propeller shaft 102 to the hydraulic pump 110. Further, the engagement of the splines of the adapter 112 with splined portion of the shaft of the hydraulic pump 110 facilitates limited longitudinal movement of the hydraulic pump 110 with the propeller shaft 102. This allows for variation of axial distance between the Power take-off (PTO) and the hydraulic pump 110, thereby protecting the Power take-off (PTO) and the hydraulic pump 110 from damages that may arise in the absence of such variability of axial distance.
Referring again to FIG. 3 illustrating a perspective view of the hydraulic pump mounting bracket 200, the hydraulic pump mounting bracket 200 includes a first reshaped member 202 and a second L-shaped member 204. The first L-shaped member 202 includes a horizontal portion 206 and a vertical portion 208, substantially perpendicular to the horizontal portion 206. The vertical position 208 is configured to be removably connected to an inner surface of the longitudinal member, say a long member 16 of the chassis 12. In one embodiment of the present invention the vertical position 208 is bolted to the inner surface of the long member 210 of the chassis 12.
The second L-shaped member 204 also includes a horizontal portion 212 and a vertical portion 214. The horizontal portion 212 being connected to the horizontal portion 206 of the first L-shaped member, best shown in FIG. 3, such that the vertical portion 214 of the second L-shaped member 204 is substantially perpendicular to the vertical portion 208 of the first L-shaped member 202. The horizontal portion 212 is capable of holding the hydraulic pump 110. The hydraulic

pump mounting bracket 200 therefore, supports the hydraulic pump 110 on the longitudinal member of the chassis 12.
In one embodiment of the present invention the vertical portion 214 of the second L-shaped member 204 includes a circular slot. The circular slot allows the adapter 112 to pass therethrough and connect to the hydraulic pump 110. The hydraulic pump 110 may be bolted to the second L-shaped member 204. The foregoing description provides specific embodiments of the present invention. It should be appreciated that these embodiment are described for purpose of illustration only, and that numerous other alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof.

Referral Numerals Description
10 Automobile
12 Chassis
14 Power source
16 Long member
100 Hydraulic pump mounting arrangement
102 Propeller shaft
104 First end portion
106 Second end portion
108 Coupling flange
110 Hydraulic pump
112 Adapter
200 Hydraulic pump mounting bracket
202 First L-shaped member

204
Second L-shaped member
206 Horizontal portion
208 Vertical portion
212 Horizontal portion
214 Vertical portion
216 Circular slot

We claim:
1. A hydraulic pump mounting arrangement for an automobile having a chassis
carrying an operating power source, the hydraulic pump mounting
arrangement comprising:
a propeller shaft driven by said operating power source of said automobile;
a hydraulic pump connected to and driven by said propeller shaft;
a hydraulic pump mounting bracket adapted to be mounted on a longitudinal member of said chassis and hold said hydraulic pump, thereby supporting said hydraulic pump on said longitudinal member of said chassis; and
an adapter having splines, said adaptor configured to connect said hydraulic pump with an end portion of said propeller shaft, the said adapter facilitating limited longitudinal movement of said hydraulic pump with said propeller shaft while allowing transfer of torque from said propeller shaft to said hydraulic pump.
2. The hydraulic pump mounting arrangement as claimed in claim 1 further comprising a coupling flange connecting an end portion of said propeller shaft with an output shaft of said operating power source.
3. The hydraulic pump mounting arrangement as claimed in claim 1, wherein said hydraulic pump mounting bracket includes,
a first L-shaped member having a horizontal portion and a vertical portion, said vertical position configured to be removably connected to an inner surface of longitudinal member of said chassis, and
a second L-shaped member having a horizontal portion and a vertical portion, said horizontal portion being connected to said horizontal portion of said first L-shaped member such that said vertical portion of said second L-

shaped member is substantially perpendicular to said vertical portion of said first L-shaped member, said horizontal portion of second L-shaped member being capable of holding said hydraulic pump, thereby supporting said hydraulic pump on said longitudinal member of said chassis.
4. The hydraulic pump mounting arrangement as claimed in claim 3, wherein said vertical portion of said second L-shaped member includes a circular slot configured to allow said adapter to pass therethrough and connect to said hydraulic pump.
5. The hydraulic pump mounting arrangement as claimed in claim 4, wherein a portion of said hydraulic pump is bolted to said second L-shaped member and said vertical position of said first L-shaped member is bolted to said longitudinal member of said chassis.
6. The hydraulic pump mounting arrangement as claimed in claim 1, wherein said hydraulic pump is a heavy duty hydraulic pump.
7. A hydraulic pump mounting bracket for an automobile having a chassis carrying an operating power source, said hydraulic pump mounting bracket comprising:
a first L-shaped member having a horizontal portion and a vertical portion, said vertical position configured to be removably connected to an inner surface of longitudinal member of said chassis; and
a second L-shaped member having a horizontal portion and a vertical portion, said horizontal portion being connected to said horizontal portion of said first L-shaped member such that said vertical portion of said second L-shaped member is substantially perpendicular to said vertical portion of said first L-shaped member, said horizontal portion of said second L-shaped

member being capable of holding said hydraulic pump, thereby supporting said hydraulic pump on said longitudinal member of said chassis.