US3861501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake drive
Assignee: Motors Liquidation Co
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Filing: 1973-09-24
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Granted: 1975-01-21
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Expires: 1993-09-24
Abstract
Abstract A disc brake with an annular disc driven by lugs on its outer periphery. The disc lugs engage slots or keys of a disc retainer which is driven by the wheel hub or axle flange. The slots or keys form ramps which engage the disc lugs in sliding relation so that the disc is axially movable for brake adjustment to accommodate lining wear. A fixed caliper is mounted on the steering knuckle or an axle housing flange. Springs act tangentially between the disc periphery and the drive member to hold the disc securely in the drive member when the brakes are in the released condition, thereby eliminating rattle. The springs may be of a flat wire stock or a flat multiple looped round wire.
Inventors
- 👤 Frank W Brooks
- 👤 James R Baber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:19
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/123; F16D55/00; F16D55/24; F16D55/26; F16D55/28; F16D55/32; F16D65/0006; F16D65/128; F16D2055/0004; F16D2055/0008; F16D2055/0012; F16D2055/005; F16D2055/0062; F16D2065/13; F16D2065/1304; F16D2065/1328; F16D2065/134; F16D2065/1356; F16D2065/1368; F16D2065/1372; F16D2065/1392; F16D2065/1396
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
197 words
A disc brake having a peripherally mounted and driven brake disc and a rotatable dished disc drive and retainer member, said retainer member having an open ended cylindrical section formed with circumferentially spaced pairs of internal lands having beveled edges extending axially thereof and further formed with apertures positioned intermediate said pairs of lands in circumferentially spaced relation, said disc having opposed friction braking side surfaces joined by vanes defining therewith radially extending air-cooling passages opening through the disc outer periphery, and further having circumferentially spaced beveled lugs formed on the outer periphery and axially aligned with said pair of lands so that each lug is received between a pair of said lands in axially sliding and rotationally driving relation, a plurality of resilient members having opposite end portions, each of said resilient members inserted into one of said apertures and one of said air-cooling passages with one of said end portions engaging an edge surface of said one of said apertures and the other of said end portions engaging a circumferentially opposite edge surface of said one of said air-cooling passages in resiliently loaded relation and acting substantially tangentially of said disc and said retainer member.
Claim 2
Dependent Claim
197 words
A disc brake having a peripherally mounted and driven brake disc and a rotatable dished disc drive and retainer member, said retainer member having an open ended cylindrical section formed with circumferentially spaced pairs of internal lands having beveled edges extending axially thereof and further formed with apertures positioned intermediate said pairs of lands in circumferentially spaced relation, said disc having opposed friction braking side surfaces joined by vanes defining therewith radially extending air-cooling passages opening through the disc outer periphery, and further having circumferentially spaced beveled lugs formed on the outer periphery and axially aligned with said pair of lands so that each lug is received between a pair of said lands in axially sliding and rotationally driving relation, a plurality of resilient members having opposite end portions, each of said resilient members inserted into one of said apertures and one of said air-cooling passages with one of said end portions engaging an edge surface of said one of said apertures and the other of said end portions engaging a circumferentially opposite edge surface of said one of said air-cooling passages in resiliently loaded relation and acting substantially tangentially of said disc and said retainer member.
Claim 3
Dependent Claim
19 words
The disc brake of claim 1 in which all of said resilient members act in the same rotational direction.
Claim 4
Dependent Claim
72 words
The disc brake of claim 1 in which each of said resilient members is a generally Omega-shaped spring wire formed to provide a body portion and hooked-end portions with one end hooking over an edge of one of said apertures and the other end hooking over the outer edge of one of said vanes and the body portion intermediate the ends positioned in one of said air-cooling passages in a spring-loaded condition.
Claim 5
Dependent Claim
71 words
The disc brake of claim 1 in which each of said resilient members is a spring wire formed to provide a multiple looped planar body portion and hooked-end portions of different lengths, the shorter hooked-end portion engaging one of said vanes and the longer hooked end portion engaging an edge of one of said apertures and the body portion being positioned in one of said air-cooling passages in a spring-loaded condition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |