Patent US3789959A successfully refreshed from Google Patents.
US3789959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatic pad adjustment in disk brakes
Assignee: Honda Motor Co Ltd
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Filing: 1972-08-28
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Granted: 1974-02-05
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Expires: 1992-08-28
Abstract
Abstract A disk brake of the type in which a caliper member extends over a brake disk and is provided, on opposite inner surfaces, with a stationary pad and a movable pad, the latter being arranged to be advanced by being pushed upon pivoting of an operation lever. An automatic pad adjustment apparatus is provided for compensation of wear of the pads and the movable pad is so arranged as to be pushed by the operation lever through a threaded tube which is in threaded engagement with an adjusting screw secured to the rear face of the pad. A return spring is connected at one end to the operation lever and at its other end to the adjusting screw through a one-way clutch.
Inventors
- 👤 T Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:28
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/56; F16D65/567; B; B62; B62L; B62L3/00; B62L3/02; F16D2125/00; F16D2125/18; F16D2125/20; F16D2125/34; F16D2125/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
258 words
Disk brake apparatus comprising a brake disk, a caliper member including two legs straddling said disk on opposite sides thereof, a first pad fixed on one leg, a second pad displaceably supported on the second leg for movement towards and away from the brake disk, a pivotal operation lever, and means coupling said lever and said second pad (a) for applying said second pad against the disk when the lever is pivoted during a brake operation and (b) for automatically adjusting the position of the second pad relative to the brake disk to compensate for wear of the pads, the latter means comprising an adjusting screw secured to said second pad, a tube threaded on said screw and undergoing displacement upon pivoting of the operation lever to advance the tube and screw towards the disk and cause said second pad to contact said disk, one-way clutch means between said tube and screw for advancing the screw relative to the tube in the course of braking when the pads are worn, and elastic means connecting the operation lever and said one-way clutch means for transmitting the turning movement of the operation lever to the one-way clutch means, said one-way clutch means comprising a pawl plate connected to said elastic means to follow movement of the operation lever, and a ratchet wheel connected to said adjusting screw for rotation therewith but capable of relative axial movement, said ratchet wheel being provided with teeth and facing said pawl plate such that the latter turns the ratchet wheel and the adjusting screw.
Claim 2
Dependent Claim
258 words
Disk brake apparatus comprising a brake disk, a caliper member including two legs straddling said disk on opposite sides thereof, a first pad fixed on one leg, a second pad displaceably supported on the second leg for movement towards and away from the brake disk, a pivotal operation lever, and means coupling said lever and said second pad (a) for applying said second pad against the disk when the lever is pivoted during a brake operation and (b) for automatically adjusting the position of the second pad relative to the brake disk to compensate for wear of the pads, the latter means comprising an adjusting screw secured to said second pad, a tube threaded on said screw and undergoing displacement upon pivoting of the operation lever to advance the tube and screw towards the disk and cause said second pad to contact said disk, one-way clutch means between said tube and screw for advancing the screw relative to the tube in the course of braking when the pads are worn, and elastic means connecting the operation lever and said one-way clutch means for transmitting the turning movement of the operation lever to the one-way clutch means, said one-way clutch means comprising a pawl plate connected to said elastic means to follow movement of the operation lever, and a ratchet wheel connected to said adjusting screw for rotation therewith but capable of relative axial movement, said ratchet wheel being provided with teeth and facing said pawl plate such that the latter turns the ratchet wheel and the adjusting screw.
Claim 3
Dependent Claim
26 words
Disk brake apparatus as claimed in claim 1 wherein said pawl plate includes pawl members raised therefrom and riding on the teeth of the ratchet wheel.
Claim 4
Dependent Claim
27 words
Disk brake apparatus as claimed in claim 1 comprising ball means between said threaded tube and said pawl plate for supporting the pawl plate on the tube.
Claim 5
Dependent Claim
32 words
Disk brake apparatus as claimed in claim 1 wherein said elastic means comprises a coil spring surrounding said tube and connected at respective ends to said operation lever and said pawl plate.
Claim 6
Dependent Claim
24 words
Disk brake apparatus as claimed in claim 1 comprising a spring acting on said ratchet wheel to urge the same axially against said tube.
Claim 7
Dependent Claim
215 words
Disk brake apparatus comprising a brake disk, a caliper member including two legs straddling said disk on opposite sides thereof, a first pad fixed on one leg, a second pad displaceably supported on The second leg for movement towards and away from the brake disk, a pivotal operation lever, and means coupling said lever and said second pad (a) for applying said second pad against the disk when the lever is pivoted during a brake operation and (b) for automatically adjusting the position of the second pad relative to the brake disk to compensate for wear of the pads, the latter means comprising an adjusting screw secured to said second pad, a tube threaded on said screw and undergoing displacement upon pivoting of the operation lever to advance the tube and screw towards the disk and cause said second pad to contact said disk, one-way clutch means between said tube and screw for advancing the screw relative to the tube in the course of braking when the pads are worn, and elastic means connecting the operation lever and said one-way clutch means for transmitting the turning movement of the operation lever to the one-way clutch means, comprising means connecting the threaded tube and the second pad for common rotation but permitting relative axial movement therebetween.
Claim 8
Dependent Claim
215 words
Disk brake apparatus comprising a brake disk, a caliper member including two legs straddling said disk on opposite sides thereof, a first pad fixed on one leg, a second pad displaceably supported on The second leg for movement towards and away from the brake disk, a pivotal operation lever, and means coupling said lever and said second pad (a) for applying said second pad against the disk when the lever is pivoted during a brake operation and (b) for automatically adjusting the position of the second pad relative to the brake disk to compensate for wear of the pads, the latter means comprising an adjusting screw secured to said second pad, a tube threaded on said screw and undergoing displacement upon pivoting of the operation lever to advance the tube and screw towards the disk and cause said second pad to contact said disk, one-way clutch means between said tube and screw for advancing the screw relative to the tube in the course of braking when the pads are worn, and elastic means connecting the operation lever and said one-way clutch means for transmitting the turning movement of the operation lever to the one-way clutch means, comprising means connecting the threaded tube and the second pad for common rotation but permitting relative axial movement therebetween.
Claim 9
Dependent Claim
254 words
Disk brake apparatus comprising a brake disk, a caliper member including two legs straddling said disk on opposite sides thereof, a first pad fixed on one leg, a second pad displaceably supported on the second leg for movement towards and away from the brake disk, a pivotal operation lever, and means coupling said lever and said second pad (a) for applying said second pad against the disk when the lever is pivoted during a brake operation and (b) for automatically adjusting the position of the second pad relative to the brake disk to compensate for wear of the pads, the latter means comprising an adjusting screw secured to said second pad, a tube threaded on said screw and undergoing displacement upon pivoting of the operation lever to advance the tube and screw towards the disk and cause said second pad to contact said disk, one-way clutch means between said tube and screw for advancing the screw relative to the tube in the course of braking when the pads are worn, and elastic means connecting the operation lever and said one-way clutch means for transmitting the turning movement of the operation lever to the one-way clutch means, the means coupling the lever and said second pad comprising a pressure plate secured to said tube and supported by the caliper member for relative axial movement while being held against relative rotation, and ball means interposed between the operating lever and said pressure plate for producing axial movement of the tube when the operating lever is pivoted.
Claim 10
Dependent Claim
254 words
Disk brake apparatus comprising a brake disk, a caliper member including two legs straddling said disk on opposite sides thereof, a first pad fixed on one leg, a second pad displaceably supported on the second leg for movement towards and away from the brake disk, a pivotal operation lever, and means coupling said lever and said second pad (a) for applying said second pad against the disk when the lever is pivoted during a brake operation and (b) for automatically adjusting the position of the second pad relative to the brake disk to compensate for wear of the pads, the latter means comprising an adjusting screw secured to said second pad, a tube threaded on said screw and undergoing displacement upon pivoting of the operation lever to advance the tube and screw towards the disk and cause said second pad to contact said disk, one-way clutch means between said tube and screw for advancing the screw relative to the tube in the course of braking when the pads are worn, and elastic means connecting the operation lever and said one-way clutch means for transmitting the turning movement of the operation lever to the one-way clutch means, the means coupling the lever and said second pad comprising a pressure plate secured to said tube and supported by the caliper member for relative axial movement while being held against relative rotation, and ball means interposed between the operating lever and said pressure plate for producing axial movement of the tube when the operating lever is pivoted.
Claim 11
Dependent Claim
34 words
Disk brake apparatus as claimed in claim 7 wherein said pressure plate and operating member are provided with opposed pairs of conical concavities, said ball means comprising a ball in each pair of concavities.
References Cited (Backward Citations)
US3211263A
Cited
US3709333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |