Claims:WE CLAIM:
1. A brake assembly for power take-off [PTO] unit, said brake assembly comprising of:
a brake plate [2] having a first connector [9a] and a second connector [9b], wherein said first connector [9a] is provided with a first end [10a] and a second end [11a], wherein said second connector [9b] is provided with a first end [10b] and a second end [11b], wherein said first connector [9a] and the said second connector [9b] is configured to have a prescribed curvature, wherein said first end [10a] of the first connector [9a] and the said first end [11a] of the second connector [9b] is fixed to the bottom end of the housing [1] of said PTO unit surrounding a input gear shaft [7];
a latch [3], detachably coupled to the said second end [11a & 11b] of the said first connector [9a] and the said second connector [9b] of the brake plate [2];
at least a biasing member [4] supporting the said latch [3];
a knob [5], positioned at the top end of the said biasing member [4] and the said latch [3]; and
a stopper [6], positioned connecting the said knob [5] and the said biasing member [4].

2. The brake assembly as claimed in claim 1, wherein the latch [3] is used to engage said first connector [9a] and second connector [9b] of the brake plate [2] towards the input gear shaft [7] for halting said input gear shaft [7] by operating the knob [5] against the biasing member [4].

3. The brake assembly as claimed in claim 1, wherein said first connector [9a] and second connector [9b] of the brake plate [2] locks the rotation of the input gear shaft [7], when the knob [5] is operated and thereby halting the inertia rotation of an output gear shaft [8] drivingly coupled to said input gear shaft [7].

4. The brake assembly as claimed in claim 1, wherein the knob [5] is connected to second end of the latch [3] through a stopper [6] for actuating the brake plate [2], thereby making the latch [3] movement with support of a biasing member [4] within the housing [1].

5. The brake assembly as claimed in claim 1, wherein the knob [5] connected to second end of the latch [3] is positioned outside the housing [1] of the PTO unit to enable the user to operate said knob [5] towards up to halt the inertia rotation of the output gear shaft [8].

6. The brake assembly as claimed in claim 1, wherein said input gear shaft [7] is a transmission shaft.

7. The brake assembly as claimed in claim 1, wherein said output gear shaft [8] is a power take-off shaft.

8. The brake assembly as claimed in claim 1, wherein said biasing member [4] is a spring.

9. The brake assembly as claimed in claim 1, wherein said brake plate [2] is ring shaped plate.
, Description:FIELD OF INVENTION
The present invention relates to the braking assembly. More particularly, the present invention relates to a brake assembly for power take-off [PTO] shaft, which helps to halt the inertia rotation PTO shaft as per user requirement. Further, the present invention relates to a brake assembly for PTO unit, which helps to halt a rotating work implement connected with the PTO shaft, when PTO clutch is disengaged from engine of the vehicle.
BACKGROUND OF INVENTION
Generally, vehicles such as agricultural and/or lawn and garden tractors are commonly provided with a PTO shaft that is used to drive attachments such as snow blowers, power brooms and drawn implements which require a powered drive input. Most commonly, the PTO shaft is a splined drive shaft installed on a tractor or truck allowing implements with mating fittings to be powered directly by the engine.
Typically, the PTO shafts are provided with a clutch that is operated by the hydraulic system of the tractor. When the PTO shaft is not being used to drive an attachment or implement, the clutch is disengaged and the shaft is not powered. When the clutch is disengaged, the vehicle hydraulic system continues to operate and hydraulic fluid flows through the system, producing small residual torques on the drive components for the PTO shaft. Consequently, even though the torques is small, the PTO shaft may continue to slowly turn when the clutch has been disengaged. When an operator wants to connect an attachment or implement to the PTO shaft, such inadvertent rotation of the PTO shaft could prove troublesome.
Conventionally, a snubber brakes made up of spring steel was provided to prevent inadvertent rotation of the PTO shaft when the clutch is disengaged. The snubber brake uses a pair of U-shaped flat springs that are clamped around approximately three-fourths of the PTO shaft. These flat springs are in constant sliding contact with the shaft to retard its rotation, particularly when the power to the PTO shaft has been stopped. While these snubber springs serve to prevent inadvertent rotation of the PTO shaft when it is declutched, they create a friction on the shaft since they bear on the PTO shaft at all times, even when it is operating at normal speeds to drive attachments and/or implements, thus causing a parasitic friction loss that robs the PTO system of horsepower, particularly at higher speeds.
DE Patent document 4006475 discloses a recess of the multi-tooth profile of PTO or drive pin screwable locking screw that the screw plug is provided with a locking contour in the axial direction of the power take-off shaft or the drive pin with two spaced contact points on the wall of the recess, and that the teeth of PTO or drive pin and coupling sleeve at their edges abut one another.
US Patent document 4185938 relates to a locking collar for releasably coupling together splined shafts and wherein the mating splined shafts include telescoping inner shaft and outer housing portions. The locking means includes a locking collar with a pair of radially spaced bores extending through the wall of the locking collar, with the bores being threaded. The housing portion of the splined shaft is provided with a threaded bore which extends in continuation with at least one of those in the locking collar.
US Patent Publication 20040108173 discusses about a brake, which is carried by the PTO shaft and utilizes the centrifugal force created by the spinning shaft to become disengaged as the shaft rotates and become engaged as the shaft is declutched.
All of the above cited prior-art deals with locking the PTO shaft with screw for coupling hub and shaft. But none of the technology proposes a brake assembly for PTO unit, which helps to halt inertia rotation PTO shaft when PTO clutch is disengaged from engine of the vehicle. Accordingly, there exists a need for a brake assembly for PTO shaft, which helps to halt the inertia rotation PTO shaft as per user requirement.
OBJECTS OF INVENTION
One or more problems of the conventional prior art may be overcome by various embodiment of the present invention.
It is the primary object of the present invention to provide a brake assembly for power take-off [PTO] unit, which helps to halt the inertia rotation PTO shaft as per user requirement when the PTO shaft input power is disconnected.
Another objective of the present invention is to provide a brake assembly for PTO unit, which helps to halt a rotating work implement connected with the PTO shaft, when PTO clutch is disengaged from engine of the vehicle.
Yet another object of the present invention is to provide a brake assembly for PTO unit, which helps to halt the inertia rotation PTO shaft to connect or disconnect a work implement in the PTO shaft without stopping the engine of the vehicle.
SUMMARY OF THE INVENTION
Thus according to the basic aspect of the invention there is provided a brake assembly for power take-off [PTO] unit, said brake assembly comprising of:
a brake plate [2], having a first connector [9a] and a second connector [9b], wherein said first connector [9a] is provided with a first end [10a] and a second end [11a], wherein said second connector [9b] is provided with a first end [10b] and a second end [11b], wherein said first connector [9a] and the said second connector [9b] is configured to have a prescribed curvature, wherein said first end [10a] of the first connector [9a] and the said first end [11a] of the second connector [9b] is fixed to the bottom end of the housing [1] of said PTO unit surrounding a input gear shaft [7];
a latch [3], detachably coupled to the second end [11a & 11b] of the said first connector [9a] and the said second connector [9b] of the brake plate [2];
at least a biasing member [4] supporting the said latch [3];
a knob [5], positioned at the top end of the said biasing member [4] and the said latch [3]; and
a stopper [6], positioned connecting the said knob [5] and the said biasing member [4].

It is another aspect of the present invention, wherein the latch [3] is used to engage the brake plate [2] towards the input gear shaft [7] for halting said input gear shaft [7] by pulling the knob [5] against the biasing member [4].
It is another aspect of the present invention, wherein the brake plate [2] locks the rotation of the input gear shaft [7], when the knob [5] is pulled and thereby halting the inertia rotation of an output gear shaft [8] drivingly coupled to said input gear shaft [7].
It is another aspect of the present invention, wherein the knob [5] is connected to second end of the latch [3] through a stopper [6] for actuating the brake plate [2], thereby making the latch [3] movement with support of a biasing member [4] within the housing [1].
It is another aspect of the present invention, wherein the knob [5] connected to second end of the latch [3] is positioned outside the housing [1] of the PTO unit so that user pulls said knob [5] towards up to halt the inertia rotation of a output gear shaft [8].
It is another aspect of the present invention, the input gear shaft [7] is a transmission shaft of a vehicle.
It is another aspect of the present invention, the output gear shaft [8] is a power take-off shaft of the vehicle.
It is another aspect of the present invention, wherein the biasing member [4] is a spring.
It is another aspect of the present invention, wherein the brake plate [2] is ring shaped plate.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 illustrates the brake assembly in the power take-off [PTO] unit according to the present invention.
Figure 2 illustrates the sectional view of the brake assembly in the PTO unit according to the present invention.
Figure 3 illustrates the brake assembly according to the present invention.
DETAILED DESCRIPTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS
The present invention as embodied by a "Brake assembly for power take-off shaft unit" succinctly fulfils the above-mentioned need[s] in the art. The present invention has objective[s] arising as a result of the above-mentioned need[s], said objective[s] being enumerated below. In as much as the objective[s] of the present invention are enumerated, it will be obvious to a person skilled in the art that, the enumerated objective[s] are not exhaustive of the present invention in its entirety, and are enclosed solely for the purpose of illustration. Further, the present invention encloses within its scope and purview, any structural alternative[s] and/or any functional equivalent[s] even though, such structural alternative[s] and/or any functional equivalent[s] are not mentioned explicitly herein or elsewhere, in the present disclosure. The present invention therefore encompasses also, any improvisation[s]/modification[s] applied to the structural alternative[s]/functional alternative[s] within its scope and purview. The present invention may be embodied in other specific form[s] without departing from the spirit or essential attributes thereof.
Throughout this specification, the use of the word "comprise" and variations such as "comprises" and "comprising" may imply the inclusion of an element or elements not specifically recited.
The present invention is thus directed to a brake assembly for power take-off [PTO] unit, which helps to halt the inertia rotation PTO shaft as per user requirement.

Referring to Figures 1 to 3, in an embodiment of the present invention, the brake assembly for PTO unit, said brake assembly comprising of: a brake plate [2], having a first connector [9a] and a second connector [9b], wherein said first connector [9a] is provided with a first end [10a] and a second end [11a], wherein said second connector [9b] is provided with a first end [10b] and a second end [11b], wherein said first connector [9a] and the said second connector [9b] is configured to have a prescribed curvature, wherein said first end [10a] of the first connector [9a] and the said first end [11a] of the second connector [9b] is fixed to the bottom end of the housing [1] of said PTO unit surrounding a input gear shaft [7]; a latch [3], detachably coupled to the second end [11a & 11b] of the said first connector [9a] and the said second connector [9b] of the brake plate [2]; at least a biasing member [4] supporting the said latch [3]; a knob [5], positioned at the top end of the said biasing member [4] and the said latch [3]; and a stopper [6], positioned connecting the said knob [5] and the said biasing member [4].
In the preferred embodiment of the present invention, the latch [3] is used to engage the said first connector [9a] and the said second connector [9b] of the brake plate [2] towards the input gear shaft [7] for halting said input gear shaft [7] by pulling the knob [5] against the biasing member [4] as shown in Figure 2 and 3.
In the preferred embodiment of the present invention, wherein said first connector [9a] and the said second connector [9b] of the brake plate [2] locks the rotation of the input gear shaft [7], when the knob [5] is pulled and thereby halting the inertia rotation of the output gear shaft [8] drivingly coupled to the said input gear shaft [7].
In the preferred embodiment of the present invention, wherein knob [5] connected to the second end of the latch [3] through a stopper [6] is used for actuating the brake plate [2], thereby making the latch [3] movement with support of a biasing member [4] within the housing [1].
In the preferred embodiment of the present invention, the knob [5] connected to second end of the latch [3] is positioned outside the housing [1] of the PTO unit, which enables the user to operate the said knob [5] to halt the inertia rotation of the output gear shaft [8].
In the preferred embodiment of the present invention, wherein said input gear shaft [7] is a transmission shaft.
In the preferred embodiment of the present invention, wherein said output gear shaft [8] is a power take-off shaft.
In the preferred embodiment of the present invention, wherein said biasing member [4] is a spring.
In the preferred embodiment of the present invention, wherein said brake plate [2] is ring shaped plate.
EXAMPLE
Referring to Figures 1 to 4, the brake assembly for PTO unit, said brake assembly comprising of: a brake plate [2], having a first connector [9a] and a second connector [9b], wherein said first connector [9a] and the said second connector [9b] is configured to have a prescribed curvature, wherein said first end [10a] of the first connector [9a] and the said first end [11a] of the second connector [9b] is fixed to the bottom end of the housing [1] of said PTO unit surrounding a input gear shaft [7]; a latch [3], detachably coupled to the second end [11a & 11b] of the said first connector [9a] and the said second connector [9b] of the brake plate [2]; at least a biasing member [4] supporting the said latch [3]; a knob [5], positioned at the top end of the said biasing member [4] and the said latch [3]; and a stopper [6], positioned connecting the said knob [5] and the said biasing member [4].
The latch [3] is used to engage the brake plate [2] towards the input gear shaft [7] for halting said input gear shaft [7] by pulling the knob [5] against the biasing member [4] as shown in Figures 2 and 3. The brake plate [2] locks the rotation of the input gear shaft [7], when the knob [5] is pulled and thereby halting the inertia rotation of the output gear shaft [8] drivingly coupled to the said input gear shaft [7]. The input gear shaft [7] is a transmission shaft. The output gear shaft [8] is a power take-off shaft. Thus, the brake assembly for PTO unit, which helps to halt the inertia rotation PTO shaft at emergency condition. Also, the brake assembly helps to halt a rotating work implement connected with the PTO shaft, when PTO clutch is disengaged from engine of the vehicle. The brake assembly helps to halt the inertia rotation PTO shaft to connect or disconnect a work implement in the PTO shaft without stopping the engine of the vehicle.
It will be apparent to the person skilled in the art that the above description is for illustrative purposes only should not be considered as limiting. Various modifications, additions, alterations, and improvements without deviating from the scope of the invention may be made by a person skilled in the art.