IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0939845
(2004-09-14)
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발명자
/ 주소 |
- Dennis,Brian P.
- Baldeosingh,Howard H.
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출원인 / 주소 |
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대리인 / 주소 |
Renner, Kenner, Greive, Bobak, Taylor &
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인용정보 |
피인용 횟수 :
2 인용 특허 :
7 |
초록
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A brake (10) for a wheel of a vehicle is slidably mounted to a vehicle frame by mounting sleeves (22). The brake ( 10) includes a stationary actuator (20) which has a plurality of depressions (38) adapted to receive a plurality of balls ( 40). The stationary actuator (20) further has a pin hole ( 34
A brake (10) for a wheel of a vehicle is slidably mounted to a vehicle frame by mounting sleeves (22). The brake ( 10) includes a stationary actuator (20) which has a plurality of depressions (38) adapted to receive a plurality of balls ( 40). The stationary actuator (20) further has a pin hole ( 34) which receives a pin (36) which correspondingly defines a pivot axis (50). Adjacent to the stationary actuator (20) is a rotating actuator (66) which rotates about an axis (50) and includes a plurality of depressions (78) which are axially aligned with the depressions (38) while in an un actuated state. The brake (10) is actuated by rotation of the rotating actuator (66) which correspondingly moves the balls (40) to progressively more shallow portions of the depressions (38, 78) which acts upon a washer (82) and one or more shims (86) to force a first stator (16) and a second stator (18) together and into contact with a rotor (12). The stators (16, 18) are biased apart by the bridge springs (90) and are axially located by a pair of bridge sleeves (30) such that the axes of the bridge sleeves (30) are coplanar with the axis (50).
대표청구항
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What is claimed is: 1. A brake assembly for a wheel of a vehicle having a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor, a plurality of balls, a stationary actuator having depressions for receiving said plurality of balls, a rotating actuator selectiv
What is claimed is: 1. A brake assembly for a wheel of a vehicle having a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor, a plurality of balls, a stationary actuator having depressions for receiving said plurality of balls, a rotating actuator selectively rotatable about an axis, a washer, said rotating actuator having depressions on one surface for receiving said balls and having a set of detents located on a surface opposed to said one surface, said detents being adapted to contact said washer, and a pair of bridge sleeves positioned between said stationary actuator and said second stator, said first stator being moveable on said bridge sleeves upon actuation of said rotating actuator, said bridge sleeves having axes that are coplanar with said axis. 2. The brake assembly of claim 1 wherein said applied braking force is coaxial with the axis of said rotating actuator. 3. The brake assembly of claim 1 further comprising a shim, said washer including a first surface that contacts each said detente, and a second surface which contacts said shim, thereby converting point forces to a surface force. 4. The brake assembly of claim 3 wherein during rotation of said rotating actuator, said washer rotates with said rotating actuator. 5. The brake assembly of claim 1 further comprising a pair of bolts, each said bridge sleeve including a cylindrical hollow tube, said tubes receiving said bolts. 6. The brake assembly of claim 1 further comprising means to bias said first stator from said second stator. 7. The brake assembly of claim 6 wherein said means to bias also biases said rotating actuator axially towards said stationary actuator to thereby maintain said balls within said rotating and stationary actuator depressions. 8. The brake assembly of claim 1, the brake assembly being carried by a pair of shafts coupled to the vehicle, wherein said stationary actuator and said stators are provided with holes adapted to slidably receive the shafts. 9. The brake assembly of claim 1 further comprising a pin defining said axis, said rotating actuator, said washer and said shims having holes to receive said pin. 10. A brake assembly for a wheel of a vehicle having a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor, a plurality of balls, a stationary actuator having depressions for receiving said plurality of balls, a rotating actuator selectively rotatable about an axis, said rotating actuator having depressions for receiving said balls, a washer located coaxially with said axis, a plurality of shims, said rotating actuator contacting said washer and said shims wherein said washer contacts one of said plurality of shims, said shims being made of a low friction material such that during rotation of said rotating actuator, said shims rotate relative to each other and said washer rotates with said rotating actuator, and a pair of bridge sleeves positioned between said stationary actuator and said second stator, said first stator being moveable on said bridge sleeves upon actuation of said rotating actuator, said bridge sleeves having axes that are coplanar with said axis. 11. A brake assembly for a wheel of a vehicle including a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor; a plurality of balls; a stationary actuator having depressions for receiving said plurality of balls; a pin defining an axis, one end of said pin being rotationally received in said stationary actuator and the other end of said pin being received in said first stator; a rotating actuator selectively rotatable about said axis, said rotating actuator having a first surface having depressions for receiving said balls and a second surface opposed to said first surface; a washer located proximate to said second surface of said rotating actuator and rotatable about said axis; and a plurality of shims located proximate to said washer and rotatable about said axis, such that upon actuation of said rotating actuator, said washer rotates with said rotating actuator and said shims rotate relative to one another. 12. The brake assembly of claim 11 wherein a braking force is applied by said balls moving along said depressions during actuation of said rotating actuator, said braking force being coaxial with said axis. 13. The brake assembly of claim 11 further comprising a pair of bridge sleeves positioned between said stationary actuator and said second stator, said first stator being moveable on said bridge sleeves upon actuation of said rotating actuator, said bridge sleeves having axes that are coplanar with the applied braking force. 14. The brake assembly of claim 11 wherein said second surface of said rotating actuator includes a set of detents axially aligned with said depressions of said rotating actuator, said detents being adapted to contact said washer. 15. The brake assembly of claim 14 wherein said washer includes a first surface that contacts each said detente, and a second surface which contacts one of said shims, thereby converting point forces to a surface force. 16. The brake assembly of claim 13 further comprising a pair of bolts, said bridge sleeves each including a hollow cylindrical sleeve, one of said bolts being received inside each said sleeve. 17. The brake assembly of claim 13 further comprising means to bias said first stator from said second stator. 18. The brake assembly of claim 17 wherein said means to bias also biases said rotating actuator axially towards said stationary actuator to thereby maintain said balls within said rotating and stationary actuator depressions. 19. The brake assembly of claim 12, the brake assembly being carried by a pair of shafts coupled to the vehicle, wherein said stationary actuator and said stators are provided with holes adapted to receive the shafts. 20. A brake assembly for frictionally contacting a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor, a plurality of balls, a stationary actuator having depressions for receiving said plurality of balls, a rotating actuator selectively rotatable about an axis, said rotating actuator having a first surface which provides depressions for receiving said balls and a second surface opposed to said first surface, a washer located proximate to said second surface of said rotating actuator and rotatable about said axis, a plurality of shims located proximate to said washer and rotatable about said axis such that upon actuation of said rotating actuator, said washer rotates with said rotating actuator and said shims rotate relative to each other, and a pair of bridge sleeves positioned between said stationary actuator and said second stator, said bridge sleeves having axes that are coplanar with said axis. 21. A brake assembly for a wheel of a vehicle having a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor, a plurality of balls, a stationary actuator having depressions for receiving said plurality of balls, a rotating actuator selectively rotatable about an axis defined by a pin, said pin being positioned generally centrally of said rotating actuator, said rotating actuator having depressions for receiving said balls, and a pair of bridge sleeves positioned between said stationary actuator and said second stator, said first stator being moveable on said bridge sleeves upon actuation of said rotating actuator, said bridge sleeves having axes that are coplanar with said axis. 22. A brake assembly for a wheel of a vehicle having a rotor comprising a first stator and a second stator adapted to frictionally contact the rotor, a plurality of balls, a stationary actuator having depressions for receiving said plurality of balls, a rotating actuator selectively rotatable about an axis, said rotating actuator having depressions for receiving said balls, and a pair of bridge sleeves positioned directly between said stationary actuator and said second stator, said first stator being moveable on said bridge sleeves upon actuation of said rotating actuator, said bridge sleeves having axes that are coplanar with said axis.
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