US4034857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle disc brake
Assignee: Toyota Motor Corp
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Filing: 1976-03-29
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Granted: 1977-07-12
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Expires: 1996-03-29
Abstract
Abstract A vehicle disc brake of the type in which friction pads are adapted to be urged by hydraulic fluid acting means into engagement with opposite faces of a friction disc and the hydraulic fluid acting means has a sliding fit on a stationary part of the vehicle wheel and is of a caliper or saddle form to straddle a peripheral portion of the disc together with the pads which when actuated, is in abutment engagement therewith. The brake is characterized by a provision of a resiliently urged abutment connection of the saddle member to one of the pad assemblies at one side of the disc having a sliding fit on the stationary part.
Inventors
- 👤 Toshio Kondo
- 👤 Yoshinori Moir
- 👤 Kirou Kizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:30
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/095; F16D65/097; F16D65/0973; F16D65/0974; F16D65/0977; F16D65/0978; F16D55/00; F16D55/02; F16D55/22; F16D55/224; F16D55/225; F16D55/226; F16D55/2265; F16D55/227; F16D2055/0004; F16D2055/0041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
206 words
A disc brake comprising: a friction disc secured to a rotational portion of a vehicle wheel assembly to rotate therewith; a stationary member secured to a fixed portion of the vehicle wheel assembly, a movable member having a sliding fit on a first pair of parallel guiding means fastened to said stationary member by releasable securing means at one side of said disc, brake actuating means fluidically operated within said movable member, a first pad having a sliding fit on said stationary member at one side of said disc for shifting in the axial direction of the rotating disc to engage one side of said disc directly by said brake actuating means in the braking operation, a second pad being slidingly supported on a second pair of parallel guiding means extending from said stationary member to engage with the opposite side of said disc under a reaction force derived from application of said first pad to said disc, and resilient clip means bearing against said movable member to urge the same into abutment relation against said second pad, said resilient clip means being formed of a thin gauge sheet metal of resilient nature and having a punched hole for receiving the corresponding second guiding means therein.
Claim 2
Dependent Claim
206 words
A disc brake comprising: a friction disc secured to a rotational portion of a vehicle wheel assembly to rotate therewith; a stationary member secured to a fixed portion of the vehicle wheel assembly, a movable member having a sliding fit on a first pair of parallel guiding means fastened to said stationary member by releasable securing means at one side of said disc, brake actuating means fluidically operated within said movable member, a first pad having a sliding fit on said stationary member at one side of said disc for shifting in the axial direction of the rotating disc to engage one side of said disc directly by said brake actuating means in the braking operation, a second pad being slidingly supported on a second pair of parallel guiding means extending from said stationary member to engage with the opposite side of said disc under a reaction force derived from application of said first pad to said disc, and resilient clip means bearing against said movable member to urge the same into abutment relation against said second pad, said resilient clip means being formed of a thin gauge sheet metal of resilient nature and having a punched hole for receiving the corresponding second guiding means therein.
Claim 3
Dependent Claim
57 words
A disc brake according to claim 1, wherein the movable member has a pair of projections against which the said clip means bear and the second pad has a pair of projections against which bear the said projections of the movable member whereby the movable member is supported in resiliently urged abutment relation with the second pad.
Claim 4
Dependent Claim
37 words
A disc brake according to claim 2, wherein the clip means has a branch to resiliently urge the first pad against the stationary member to thereby prevent the first pad from vibration and rattle during braking operation.
Claim 5
Dependent Claim
53 words
A disc brake according to claim 3 wherein said clip means is formed with a warning finger extending into a lining on the second pad whereby a foreign sound is emitted when the lining is excessively worn to such a degree that the end of the finger becomes engaged with the rotating disc.
References Cited (Backward Citations)
US3670300A
Cited
US3710896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |