Patent US3880261A successfully refreshed from Google Patents.
US3880261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc brake
Assignee: DBA SA
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Filing: 1974-03-27
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Granted: 1975-04-29
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Expires: 1994-03-27
Abstract
Abstract The ends of a metal sheet forming antirattle spring are engaged in two opposite axial grooves formed in the axial edges of an aperture in a torque taking member in such a way that it can occupy two stable positions, the first stable position being convex and nearer the exterior of the brake during mounting of the spring, and the second stable position being concave and nearer the interior of the brake to urge at least one pad anchored on the axial edges of the aperture onto a stop preventing radial escape of the pad towards the interior of the brake. The upper edge of the pad is concave and formed with an intermediate surface on which the spring is bearing and with two extensions adjacent the ends of the spring which apply a shearing force to the spring when the radial travel of the pad reaches a predetermined value, thus avoiding the spring to move into its first stable position.
Inventors
- 👤 Pierre Courbot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:03
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/095; F16D65/097; F16D65/0973; F16D65/0974; F16D65/0977
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
277 words
In a disc brake: a disc mounted for rotation with a member to be braked; a torque taking member mounted adjacent one side of said disc, said torque taking member defining an aperture therein defined by a pair of inner edges of said torque member; a friction element disposed between said inner edges of said torque member and adapted to anchor thereon when a brake application is effected, said friction element being removable from said torque member through said aperture radially outwardly with respect to said disc; abutment means on said inner edges of the torque member and on the corresponding edges of said friction element to locate the latter radially with respect to the torque member; actuating means for urging said friction element into braking engagement with said disc when a brake application is effected; and retention means for retaining said friction element on said torque member, said retention means including a pair Of facing recesses on said inner edges, and a substantially rectilinear spring, the length of the spring being greater than the length between the bottoms of said recesses so that when the opposite ends of the rectilinear spring are installed in said recesses the spring is movable between first and second stable positions; a first portion of said spring engaging the upper edge of said friction element when the spring is in said first stable position to urge the abutment means on the friction element and the torque member into engagement, said spring in said second position being substantially symmetrical about a plane passing through said recesses with respect to the first position to permit removal of the spring from the torque member.
Claim 2
Dependent Claim
277 words
In a disc brake: a disc mounted for rotation with a member to be braked; a torque taking member mounted adjacent one side of said disc, said torque taking member defining an aperture therein defined by a pair of inner edges of said torque member; a friction element disposed between said inner edges of said torque member and adapted to anchor thereon when a brake application is effected, said friction element being removable from said torque member through said aperture radially outwardly with respect to said disc; abutment means on said inner edges of the torque member and on the corresponding edges of said friction element to locate the latter radially with respect to the torque member; actuating means for urging said friction element into braking engagement with said disc when a brake application is effected; and retention means for retaining said friction element on said torque member, said retention means including a pair Of facing recesses on said inner edges, and a substantially rectilinear spring, the length of the spring being greater than the length between the bottoms of said recesses so that when the opposite ends of the rectilinear spring are installed in said recesses the spring is movable between first and second stable positions; a first portion of said spring engaging the upper edge of said friction element when the spring is in said first stable position to urge the abutment means on the friction element and the torque member into engagement, said spring in said second position being substantially symmetrical about a plane passing through said recesses with respect to the first position to permit removal of the spring from the torque member.
Claim 3
Dependent Claim
71 words
A disc brake as recited in claim 1, wherein the upper edge of said friction element includes a pair of spaced-apart surfaces adapted to engage corresponding portions of said spring adjacent the opposite ends thereof when the friction element moves radially outwardly toward said spring for a predetermined distance, said predetermined distance being less than the radial travel of said spring required to move the latter to said second stable position.
Claim 4
Dependent Claim
37 words
The invention of claim 2, wherein said upper edge of said friction element defines a substantially concave surface, the opposite ends of said concave surface defining said surfaces adapted to engage said corresponding portions of said spring.
Claim 5
Dependent Claim
45 words
The invention of claim 3, wherein said upper edge of said friction element includes a substantially flat intermediate surface, said spaced-apart surfaces extending from opposite ends of said intermediate surface and projecting toward said aperture, said first portion of said spring engaging said intermediate surface.
Claim 6
Dependent Claim
23 words
The invention of claim 1, wherein said spring includes at least one looped portion adjacent said first portion and projecting toward said aperture.
Claim 7
Dependent Claim
43 words
The invention of claim 1, wherein said torque member includes a slot extending radially with respect to said torque member and said spring includes a lug extending into said slot to lock said spring from movement axially with respect to said torque member.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |