Patent US3876042A successfully refreshed from Google Patents.
US3876042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for eliminating squeaking in vehicle brakes
Assignee: Volvo AB
•
Filing: 1974-01-18
•
Granted: 1975-04-08
•
Expires: 1994-01-18
Abstract
Abstract In an arrangement for eliminating squeaking in disc-type vehicle brakes, the arrangement comprising an equalizing element arranged between the brake shoe and the brake piston, the improvement that the equalizing element is guided with a certain clearance in a plane parallel to the brake shoe and the surfaces of the element bearing against the brake piston and the brake shoe, respectively, are of considerably different size.
Inventors
- 👤 Sven Borjesson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:38
CPC Classifications
F; F16; F16D; F16D55/00; F16D55/02; F16D55/22; F16D55/228; F16D65/00; F16D65/0006; F16D2125/00; F16D2125/02; F16D2125/06; F16D2125/18; F16D2125/58; F16D2125/587
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A disc-type vehicle brake, comprising a brake shoe having a brake lining, a brake piston actuating the brake shoe, and an equalizing element disposed between and bearing on two sides of the brake shoe and brake piston that face each other, one of said shoe and piston having a recess therein in which said element is disposed with clearance in a direction parallel to said shoe, said element having a substantially convex surface that bears against the other of said shoe and piston, said element and the bottom of said recess having flat surfaces which are in sliding contact with each other over an area which is parallel to said shoe and which is substantially greater than the area of contact between said element and the other of said shoe and piston.
Claim 2
Dependent Claim
132 words
A disc-type vehicle brake, comprising a brake shoe having a brake lining, a brake piston actuating the brake shoe, and an equalizing element disposed between and bearing on two sides of the brake shoe and brake piston that face each other, one of said shoe and piston having a recess therein in which said element is disposed with clearance in a direction parallel to said shoe, said element having a substantially convex surface that bears against the other of said shoe and piston, said element and the bottom of said recess having flat surfaces which are in sliding contact with each other over an area which is parallel to said shoe and which is substantially greater than the area of contact between said element and the other of said shoe and piston.
Claim 3
Dependent Claim
13 words
A brake as claimed in claim 1, said substantially convex surface being frusto-conical.
Claim 4
Dependent Claim
41 words
A brake as claimed in claim 1, said recess being in said piston, said piston having a frusto-conical peg at the center of the bottom of said recess that fits into a complementary recess in the flat surface of said element.
Claim 5
Dependent Claim
30 words
A brake as claimed in claim 3, said recess in said piston having a frusto-conical outer side wall complementary to the shape of the outer side wall of said element.
Claim 6
Dependent Claim
19 words
A brake as claimed in claim 1, said element being circular and having a diameter several times its thickness.
References Cited (Backward Citations)
US3186518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |