US4657312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip-controlled brake system for motor vehicles
Assignee: Continental Teves AG and Co OHG
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Filing: 1985-05-15
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Granted: 1987-04-14
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Expires: 2005-05-15
Abstract
Abstract A slip-controlled brake system for motor vehicles is provided with at least one static brake circuit (17, 18) into which, in the event of control, pressure medium can be fed from a dynamic pressure medium circuit through a control valve. The system comprises a brake pressure generator (1) including a master cylinder arrangement (12) and a positioning sleeve (33) maintaining the master cylinder piston or pistons (42, 43) in a defined position during the dynamically controlled inflow of pressue medium. The brake system is furnished with a monitoring means (39, 40, WU) to detect the path and the relative position of the positioning sleeve (33), respectively, in the master cylinder arrangement (12) and to evaluate the same as a signal indicative of the proper operation of the brake system. The path sensor (39) detecting the position of the positioning sleeve (33) is capable to mechanically or electrically open a contact (39) feasibly closed in the resting position to thereby release a signal.
Inventors
- 👤 Jochen Burgdorf
- 👤 Lutz Weise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:35
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/88; B60T8/92; B60T8/94; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/142; B60T13/145; B60T13/146; B60T8/885
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
189 words
A slip-controlled brake system for motor vehicles having a brake pedal and comprising at least one static brake circuit into which, in the event of control, pressure medium from a dynamic pressure medium circuit is fed through a control valve, a brake pressure generator operably connected to said brake pedal and including a master cylinder arrangement including positioning means which during the dynamically controlled inflow of pressure medium into the static brake circuit is adapted to be moved to a first position wherein said positioning means is set back against the brake pedal force to maintain the master cylinder piston in a defined position, said positioning means also adapted to move to a second position responsive to the reduction of said pressure medium in said master cylinder, said system comprising a monitoring means (39, 40, WU) for detecting the relative position of said positioning means in the master cylinder arrangement (12), and means operably connected to the brake slip control system for evaluating the detected position of said positioning means whereby said brake slip control system is rendered substantially ineffective when said positioning means moves to said second position.
Claim 2
Dependent Claim
189 words
A slip-controlled brake system for motor vehicles having a brake pedal and comprising at least one static brake circuit into which, in the event of control, pressure medium from a dynamic pressure medium circuit is fed through a control valve, a brake pressure generator operably connected to said brake pedal and including a master cylinder arrangement including positioning means which during the dynamically controlled inflow of pressure medium into the static brake circuit is adapted to be moved to a first position wherein said positioning means is set back against the brake pedal force to maintain the master cylinder piston in a defined position, said positioning means also adapted to move to a second position responsive to the reduction of said pressure medium in said master cylinder, said system comprising a monitoring means (39, 40, WU) for detecting the relative position of said positioning means in the master cylinder arrangement (12), and means operably connected to the brake slip control system for evaluating the detected position of said positioning means whereby said brake slip control system is rendered substantially ineffective when said positioning means moves to said second position.
Claim 3
Dependent Claim
51 words
A brake system according to claim 8, wherein the positioning means (13) comprises a positioning sleeve (33) axially displaceable in the direction of movement of the master cylinder piston, with the position of the positioning sleeve (33) in the master cylinder arrangement (12) being detectable by mechanical path sensor means (40).
Claim 4
Dependent Claim
39 words
A brake system according to claim 2, wherein the path sensor means are formed as mechanically operable end switches (40) coupled to an electrical contact (39) closed in the resting position and during proper operation of the brake system.
Claim 5
Dependent Claim
20 words
A brake system according to claim 8, wherein the path sensor means (40) are formed as inductive position metering means.
Claim 6
Dependent Claim
32 words
A brake system according to claim 8, wherein the signals of the monitoring device (39, 30, WU) are logically coupled to the start signals of the slip control for the brake system.
Claim 7
Dependent Claim
35 words
A brake system according to claim 5, wherein the monitoring means (39,40,WU) is in operation only in the event of a dynamically controlled feed of pressure medium and only during the brake slip control, respectively.
Claim 8
Dependent Claim
58 words
A brake system according to claim 2, wherein in the event of a failure the brake slip control can be turned off in whole or part in response to the relative position of the positioning means (13) and the positioning sleeve (33), respectively, in the master cylinder arrangement (12) as indicated by the monitoring means (39, 40, WU).
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) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |