IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0210285
(2005-08-25)
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등록번호 |
US-7353921
(2008-04-08)
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발명자
/ 주소 |
- Dennis,Brian P.
- Dodd,Kenneth A.
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출원인 / 주소 |
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대리인 / 주소 |
Renner, Kenner, Greive, Bobak, Taylor & Weber
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인용정보 |
피인용 횟수 :
2 인용 특허 :
2 |
초록
▼
A brake (10) for the drive shaft of a vehicle or machine includes a housing (11) having an open end (12) which is adapted to be attached to the vehicle. A shaft is received in the housing (11) and is adapted to be attached to the vehicle drive shaft for rotation therewith. The shaft has a splined ou
A brake (10) for the drive shaft of a vehicle or machine includes a housing (11) having an open end (12) which is adapted to be attached to the vehicle. A shaft is received in the housing (11) and is adapted to be attached to the vehicle drive shaft for rotation therewith. The shaft has a splined outer surface. A disc assembly (30) includes a plurality of rotatable discs (29) carried by the splined surface of the shaft, a plurality of stationary discs (32) which alternate with the rotatable discs (29) and a primary stationary disc (33) located at the end of the disc assembly (30), proximate to the open end (12) of housing (11). As mounted, a plurality of springs (42) cause the stationary discs (32) to engage the rotatable discs (29) to apply a braking torque to the shaft. A piston (21) is moveable to oppose the spring force and allow free rotation of the rotating discs (29). Prior to mounting, a plurality of shipping bolts (25) hold the disc assembly (30) together and axially aligned. Prior to mounting, springs (42) are held in place by a spring retaining ring (40) and by pin assemblies (44).
대표청구항
▼
What is claimed is: 1. A brake adapted to be carried by a rotatable shaft comprising a housing having an open end; a plurality of stationary discs in said housing; a plurality of rotatable discs adapted to rotate with the shaft; said rotatable discs being positioned to be engaged by said stationary
What is claimed is: 1. A brake adapted to be carried by a rotatable shaft comprising a housing having an open end; a plurality of stationary discs in said housing; a plurality of rotatable discs adapted to rotate with the shaft; said rotatable discs being positioned to be engaged by said stationary discs; a plurality of springs biasing said stationary discs to engage said rotatable discs; a piston movable to oppose the force of said springs; said housing, said rotatable discs and said stationary discs each having at least one bore; a shipping bolt adapted to be received in each said bore during shipping and installation of said brake, and adapted to be permanently removed after positioning of said brake on said shaft. 2. A brake according to claim 1 wherein said bolt includes a threaded portion, one of said bores of said stationary discs being provided with threads, said threads receiving said bolt threaded portion. 3. A brake according to claim 1 wherein said open end of said housing is adapted to be mounted to a vehicle body. 4. A brake according to claim 1 wherein said rotating discs include splines on the radially interior portion, said splines are adapted to mesh with splines on the rotating shaft. 5. A brake according to claim 4 wherein when said shipping bolts are received in said bores, said splines of said rotating discs are aligned. 6. A brake according to claim 1 wherein said piston includes an annular body portion and a plurality of projections, said piston being moveable by a pressurized fluid to cause said projections to apply a force to the stationary disc which is proximate to said springs. 7. A brake according to claim 6 wherein when no said pressurized fluid is provided, said springs cause said stationary discs to engage said rotatable discs, applying a torque to the shaft. 8. A brake according to a claim 1 wherein when said piston is actuated and applies a force greater than the force of said springs, said stationary discs and said rotatable discs disengage. 9. A brake adapted to be carried by a rotatable shaft comprising, a housing having an open end, a plurality of stationary discs in said housing, a plurality of rotatable discs adapted to rotate with the shaft, said rotatable discs being positioned to be engaged by said stationary discs, a plurality of springs biasing said stationary discs to engage said rotatable discs, a piston movable to oppose the force of said springs, a plurality of pin assemblies, and a spring retaining ring slidably mounted to said pin assemblies, said springs being retained between said spring retaining ring and one of said stationary discs by the pin assemblies during shipping and installation of said brakes. 10. A brake according to claim 9 wherein said pin assemblies are carried by one of said stationary discs. 11. A brake according to claim 10 wherein prior to positioning the brake on the shaft, the force of said springs maintains said spring retaining ring spaced from said one of said stationary discs. 12. A brake according to claim 11 wherein said pin assembly includes a washer which provides a stop for said spring retaining ring. 13. A brake according to claim 9 wherein said pin assembly includes a washer, a screw and a spacer, said screw including a screw head and wherein said spacer and said washer are held between said screw head and said stationary disc. 14. A brake according to claim 9 wherein when said brake is positioned on the shaft, said spring retaining ring is adapted to interface with a vehicle body, wherein the body is provided with holes which are adapted to allow said pin assemblies to reside therein. 15. A brake according to claim 9 wherein said piston includes an annular body portion and a plurality of projections, said piston being moveable by a pressurized fluid to cause said projections to apply a force to the stationary disc which is proximate to said springs. 16. A brake according to claim 15 wherein when no said pressurized fluid is provided, said springs cause said stationary discs to engage said rotatable discs, applying a torque to the shaft. 17. A brake according to a claim 9 wherein when said piston is actuated and applies a force greater than the force of said springs, said stationary discs and said rotatable discs disengage. 18. A brake adapted to be carried by a rotatable shaft comprising a housing having an open end; a plurality of stationary discs in said housing; a plurality of rotatable discs adapted to rotate with the shaft; said rotatable discs being positioned to be engaged by said stationary discs; a plurality of springs biasing said stationary discs to engage said rotatable discs; a piston movable to oppose the force of said springs; said housing, said rotatable discs and said stationary discs each having at least one bore; a shipping bolt received in each said bore; a plurality of pin assemblies; and a spring retaining ring slidably mounted to said pin assemblies, said springs being retained between said spring retaining ring and one of said stationary discs prior to positioning the brake on the shaft, said bolts being adapted to be received in each said bore during shipping and installation of said brake and adapted to be permanently removed after positioning of said brake on said shaft. 19. A brake adapted to be carried by a rotatable shaft and to be mounted on a vehicle body comprising a housing having an open end and a plurality of holes, a plurality of stationary discs in said housing, a plurality of rotatable discs adapted to rotate with the shaft, said rotatable discs being positioned to be engaged by said stationary discs, a plurality of springs biasing said stationary discs to engage said rotatable discs, a piston movable to oppose the force of said springs, and a plurality of torque pins received in said housing holes and projecting from said housing, said torque pins being adapted to be received in corresponding holes in the vehicle body thereby aligning the brake during mounting. 20. A brake adapted to be carried by a rotatable shaft comprising a housing having an open end; a plurality of stationary discs in said housing; a plurality of rotatable discs are provided with a splined radially inner portion which is adapted to mesh with a splined portion of the shaft; said rotatable discs being positioned to be engaged by said stationary discs; a plurality of springs biasing said stationary discs to engage said rotatable discs; a piston movable to oppose the force of said springs; said housing, said rotatable discs and said stationary discs each having at least one bore; a shipping bolt received in each said bore, said bolts holding said splined portions of said rotatable discs in an aligned orientation to facilitate easy mounting to the splined portion of the shaft, said shipping bolts being removed after positioning the brake on the shaft to allow rotation of said rotatable discs.
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