US3885651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake assembly
Assignee: Valeo SE
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Filing: 1973-04-30
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Granted: 1975-05-27
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Expires: 1993-04-30
Abstract
Abstract A brake assembly, comprising a rotatable element, a braking surface on said element, and a pad comprising a friction lining for contact with the braking surface and a rigid support for the lining. The pad is mounted opposite the braking surface, and a brake operating device applies the pad against the braking surface while the braking reaction is transmitted to the mounting structure. Noise-reducing structure is located between the brake operating device and the friction lining and/or between the pad and the mounting structure and comprises a heat-resistant damping element having plastic and elastic properties, i.e., viscoelastic properties similar to these of a butyl rubber, and a covering element adjacent the damping element and having elastic properties similar to those of a metal such as steel. Elastic frequency canalising structure is interposed between the pad and a bearing surface formed on said mounting structure.
Inventors
- 👤 Jean Odier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:51
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/092; F16D65/0006; F16D65/78; F16D2065/785; F16D2200/00; F16D2200/0034; F16D2200/0056
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A BRAKE ASSEMBLY COMPRISING A ROTATABLE ELEMENT HAVING A BRAKING SURFACE THEREON, A BRAKE SHOE, MOUNTING MEANS FOR MOUNTING THE BRAKE SHOE OPPOSITE THE BRAKING SURFACE, SAID BRAKE SHOE COMPRISING A COMPOSITE FLAT PLATELIKE SANDWICH STRUCTURE INCLUDING A RIGID SUPPORT PLATE AND A BRAKE LINING ADAPTED TO BE BROUGH INTO CONTACT WITH THE BRAKING SURFACE AND A FALT DAMPING ELEMENT OF HEAT-RESISTANT BUTYL RUBBERLIKE MATERIAL WITH VISCO-ELASTIC PROPERTIES AND A YOUNG''S MODULAS OF ABOUT 10**7 N/M2 THEREBY TO DAMP A PREDETERMINED FREQUENCY OF VIBRATION OF THE BRAKE SHOE AND A COVERING ELEMENT ADJACENT TO THE DAMPING ELEMENT AND HAVING STEEL-LIKE ELASTIC PROPERTIES, AND RESILIENT MEANS OPERATIVELY LOCATED BETWEEN A LATERAL EDGE OF THE BRAKE SHOE AND THE MOUNTING MEANS, SAID RESILIENT MEANS HAVING A STIFFNESS OF ABOUT 5 X 10**6 N/M THEREBY TO CHANNEL THE FREQUENCY RANGE OF AUDIBLE BRAKE SHOE VIBRATIONS INTO A NARROWED RANGE APPROACHING SAID PREDETERMINED FREQUENCY OF VIBRATION WHICH THE DAMPING ELEMENT IS ADAPTED TO DAMP THEREBY REDUCING NOISE PRODUCED BY THE VIBRATIONS.
Claim 2
Dependent Claim
167 words
A BRAKE ASSEMBLY COMPRISING A ROTATABLE ELEMENT HAVING A BRAKING SURFACE THEREON, A BRAKE SHOE, MOUNTING MEANS FOR MOUNTING THE BRAKE SHOE OPPOSITE THE BRAKING SURFACE, SAID BRAKE SHOE COMPRISING A COMPOSITE FLAT PLATELIKE SANDWICH STRUCTURE INCLUDING A RIGID SUPPORT PLATE AND A BRAKE LINING ADAPTED TO BE BROUGH INTO CONTACT WITH THE BRAKING SURFACE AND A FALT DAMPING ELEMENT OF HEAT-RESISTANT BUTYL RUBBERLIKE MATERIAL WITH VISCO-ELASTIC PROPERTIES AND A YOUNG''S MODULAS OF ABOUT 10**7 N/M2 THEREBY TO DAMP A PREDETERMINED FREQUENCY OF VIBRATION OF THE BRAKE SHOE AND A COVERING ELEMENT ADJACENT TO THE DAMPING ELEMENT AND HAVING STEEL-LIKE ELASTIC PROPERTIES, AND RESILIENT MEANS OPERATIVELY LOCATED BETWEEN A LATERAL EDGE OF THE BRAKE SHOE AND THE MOUNTING MEANS, SAID RESILIENT MEANS HAVING A STIFFNESS OF ABOUT 5 X 10**6 N/M THEREBY TO CHANNEL THE FREQUENCY RANGE OF AUDIBLE BRAKE SHOE VIBRATIONS INTO A NARROWED RANGE APPROACHING SAID PREDETERMINED FREQUENCY OF VIBRATION WHICH THE DAMPING ELEMENT IS ADAPTED TO DAMP THEREBY REDUCING NOISE PRODUCED BY THE VIBRATIONS.
Claim 3
Dependent Claim
23 words
A brake assembly according to claim 1, wherein the damping element is made from asbestos fibers covered with at least one rubberlike substance.
Claim 4
Dependent Claim
15 words
A brake assembly according to claim 1, wherein the covering element is made of steel.
Claim 5
Dependent Claim
15 words
A brake assembly according to claim 1, wherein the covering element is made of aluminum.
Claim 6
Dependent Claim
17 words
A brake assembly according to claim 1, wherein the damping element is located adjacent the support plate.
Claim 7
Dependent Claim
25 words
A brake assembly according to claim 5, wherein the damping element is located adjacent to the face of said support plate, opposite the brake lining.
Claim 8
Dependent Claim
29 words
A brake assembly according to claim 6, wherein the covering element forms a terminal element of the shoe adapted to cooperate with a brake operating device for the assembly.
Claim 9
Dependent Claim
25 words
A brake assembly according to claim 5, wherein the damping element and the covering element are located between the support plate and the brake lining.
Claim 10
Dependent Claim
15 words
A brake assembly according to claim 1, wherein the resilient means comprises a corrugated spring.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |