Patent US2140478A successfully refreshed from Google Patents.
Patent US4076330A successfully refreshed from Google Patents.
US4076330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detecting apparatus for a lock prevention system for detecting wear of vehicle brakes
Assignee: Robert Bosch GmbH
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Filing: 1977-02-11
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Granted: 1978-02-28
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Expires: 1997-02-11
Abstract
Abstract A detecting apparatus for detecting brake wear and which is used with a wheel lock prevention system. The detecting device utilizes some of the components of the wheel lock prevention system and as such includes a detector, an electric circuit for the detector, a monitoring device to insure the proper operation of the system and a brake lining wear-indicating device. The detector includes a pulse generator connected to an electronic switch and to a brake lining wear-indicating device.
Inventors
- 👤 Heinz Leiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:24
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488; B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/329; B60T8/88; B60T8/885; F; F16; F16D; F16D66/00; F16D66/02; F16D66/021; F16D66/022; B60T2270/00; B60T2270/40; B60T2270/415; F16D2066/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
In combination, a detecting apparatus and a wheel locking prevention system for vehicle brakes, comprising: a detector including a pulse generator, a pulse wheel disposed opposite to the pulse generator and pulse circuit; an electronic switch connected to the pulse circuit; a monitoring device which insures a correct operation of the wheel locking prevention system; and a brake lining wear-indicating device connected to the pulse generator.
Claim 2
Dependent Claim
66 words
In combination, a detecting apparatus and a wheel locking prevention system for vehicle brakes, comprising: a detector including a pulse generator, a pulse wheel disposed opposite to the pulse generator and pulse circuit; an electronic switch connected to the pulse circuit; a monitoring device which insures a correct operation of the wheel locking prevention system; and a brake lining wear-indicating device connected to the pulse generator.
Claim 3
Dependent Claim
14 words
The combination as defined in claim 1, wherein the pulse circuit is speed responsive.
Claim 4
Dependent Claim
27 words
The combination as defined in claim 1, wherein the detecting apparatus is used to measure the current in the pulse circuit particularly when the vehicle is stationary.
Claim 5
Dependent Claim
81 words
The combination as defined in claim 1, wherein the brake lining wear-indicating device includes at least one brake lining, a pin, means connecting the pin to the pulse generator and further means connecting the pin to the at least one brake lining, said pin serving to adjust the position of the pulse generator relative to the pulse wheel thereby adjusting the air gap between the pulse generator and the pulse wheel, and wherein this adjustment is detected by the monitoring device.
Claim 6
Dependent Claim
35 words
The combination as defined in claim 1, wherein the pulse generator is electrically connected to the brake lining wear-indicating device by an electrical circuit which is connected to and in parallel with the pulse circuit.
Claim 7
Dependent Claim
55 words
The combination as defined in claim 5, wherein the brake linging wear-indicating device includes a pair of brake linings, and wherein the pulse circuit is at least partly short-circuited by the brake disc when it engages at least one of the brake linings to engage the electrical circuit which is connected to the pulse circuit.
Claim 8
Dependent Claim
14 words
The combination as defined in claim 6, wherein the pulse circuit includes a resistor.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |