F 0 R M 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10; rule 13)
1. Title of the invention: AN AMPLIFICATION MECHANISM
2. Applicant(s):

(a) NAME : LARSEN & TOUBRO LIMITED
(b) NATIONALITY : An Indian Company
(c) ADDRESS : L & T House, Ballard Estate, Mumbai 400
001,State of Maharashtra,India
3. PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is to be performed:

FIELD OF THE INVENTION
The present invention relates to switchgear applications. Particularly, the present invention relates to Molded case circuit breaker & Circuit breakers where internal accessories like UV & shunt release are used. More particularly, the present invention relates to a mechanism where amplification of smaller force to higher value is required and also for a linear output requirement.
BACKGROUND OF THE INVENTION
The present inventors found that there is a need for a compact mechanism with lesser number of components that can be incorporated in smaller products where there is very less output force that can has to be amplified to a higher force.
The present invention is mainly for the solenoid operated accessories which will be mounted inside the circuit breaker where there will be limited space. Also the force requirement will be high and at the same time stroke available for tripping will be very less. This invention satisfies these requirements.
OBJECTS OF THE INVENTION
One object of the present invention is to overcome the disadvantages / drawbacks of the prior art.
A basic object of the present invention is to provide an amplification mechanism that amplifies minimum force to required higher output force.

Another object of the present invention is to provide a mechanism where amplification of smaller force to higher value is required and also for a linear output requirement.
These and other advantages of the present invention will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings.
SUMMARY OF THE INVENTION
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form as a prelude to a more detailed description of the invention presented later.
According to one of the aspect of the present invention the
system is provided An Amplification mechanism, said mechanism
comprising:
a mounting plate, said mounting plate comprises mounting slot;
at least one Latch pins mounted on said mounting slot ;
an actuator means mounted on said mounting plate via said
latch pins;
a latch means mounted on said mounting plate via said latch
pins; and
a spring means connected between said mounting plate and said
actuator.
Other aspects, advantages, and salient features of the invention will become apparent to those skilled in the art

from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
The following drawings are illustrative of particular examples for enabling methods of the present invention, are descriptive of some of the methods, and are not intended to limit the scope of the invention. The drawings are not to scale (unless so stated) and are intended for use in conjunction with the explanations in the following detailed description.
Figure 1 illustrates amplification mechanism.
Figure 2 illustrates cross section view of amplification mechanism.
Figure 3 illustrates exploded view of amplification mechanism la.
Figure 4 illustrates Amplification mechanism in latched condition
Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure.
Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWING
In the following detailed description, reference is made to the accompanying drawings that form a part hereof, and illustrate the best mode presently contemplated for carrying out the invention. Further functioning of the system and method has been discussed below to describe the way it operates. However, such description should not be considered as any limitation of scope of the present system. The structure thus conceived is susceptible of numerous modifications and variations, all the details may furthermore be replaced with elements having technical equivalence. In practice the materials and dimensions may be any according to the requirements, which will still be comprised within its true spirit.
Amplification mechanism (1), consisting of actuator (2), Main springs (3) , mounting plate (4) , Mounting plate slot (4a) , latch pin (5), latch (6) and mounting pin (7).
The present invention consists of latch (6) , latch pin (5), actuator (2), mounting plates (4), and mounting pins (7). The actuator (2), latch (6) are mounted on the mounting plate (4) with the mounting pins (7) as shown in the FIG: 1. The latch pin (5) is mounted in the slot (4a) on the mounting plate (4). The actuator (2) carries the latch pin (5) while it is rotating. The spring (3) is connected between the mounting plate (4) and the actuator (2) . This spring (3) makes the actuator (2) to rotate clockwise direction. But this rotation is stopped by the latch (6). The latch (6) is positioned such a way that the reaction force generated, always passes through the pivot of the latch (6).

Latch latch position on the side plate is decided considering the line of action of reaction force. The latching surface on the latch is a curved surface with the centre concentric to the pivot of the latch. Hence when the latch pin and the latch come in contact, the reaction force generated passes to through the center of the pin and the center of the curved surface of the latch. Since the reaction force is passing through the center of the latch there will be no torque generated on the latch during latched condition. Hence there is no torque generated on the latch (6) due to the actuator (2) rotation.
Now the external force is applied on the surface (6a) of latch (6) . When the latch (6) is rotated till the point that it completely disengages the Latch pin (5,the latch pin (5) along with the actuator (2) rotates in clockwise direction due to the spring (3) force on it. Hence the actuator (2) with higher force is de-latched with a lesser force, allowing the actuator (2) to rotate. Since the actuator (2) carries the latch pin (5) which in turn guided in the slot (4a) on the mounting plate(4) the latch pin (5) moves linearly inside the mounting slot (4a) transferring the actuator(2) force into a linear higher force. This type of mechanism can be used in smaller products where the force output of the system is very less.
Features:
Innovation consists of an Amplification mechanism.
Amplification mechanism amplifies minimum force to required
higher output force.
Invention requires lesser de-latching force.
Minimum number of components.
Amplification mechanism gives a linear output.

WE CLAIM:
1. An Amplification mechanism , said mechanism comprising :
a mounting plate, said mounting plate comprises mounting
slot;
atleast one Latch pins mounted on said mounting slot ;
an actuator means mounted on said mounting plate via said
latch pins;
a latch means mounted on said mounting plate via said
latch pins; and
a spring means connected between said mounting plate and
said actuator.
2. Mechanism as claimed in claim 1 wherein said latch means is positioned in such a way that the reaction force generated, always passes through the pivot of the latch such that there is no torque generated on the latch due to the actuator rotation.
3. Mechanism as claimed in claim 1 wherein said spring means makes said actuator rotate in clockwise direction.
4. Mechanism as claimed in claim 1 wherein said Latch position on the side plate is decided considering the line of action of reaction force.
5. Mechanism as claimed in claim 1 wherein said latch means comprises latching surface on said latch is a curved surface with the centre concentric to the pivot of the latch.
6. Mechanism as claimed in claim 1 wherein said latch pin and the latch comes in contact, the reaction force

generated passes to through the center of the pin and the center of the curved surface of the latch.
7. An Amplification mechanism as herein substantially described and illustrated with the accompanying drawings.