EP0110303A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Brake system for vehicle
Assignee: Nissan Motor Co Ltd
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Filing: 1983-11-22
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Granted: —
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Expires: 2003-11-22
Abstract
Abstract @ A hydraulic brake system wherein a brake-holding mechanism applies pressure fluid from hydraulic pressure source to brake actuators. The brake-holding mechanism have a valve element and a preventing means for preventing the valve element from seating on a valve seat so as to permit pressure always to be released from the brake actuator toward the hydraulic pressure source when detecting means detects the backward travel of a vehicle.
Inventors
- 👤 Hitoshi Kubota
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:44
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/12; B60T7/122; B60T11/00; B60T11/10; B60T11/103; B60T11/105; B60T17/00; B60T17/18; B60T17/22; B60W; B60W10/00; B60W10/10; B60W10/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
172 words
(1) A brake system for use in a vehicle having of a source of hydraulic pressure, brake actuators connected to said source of hydraulic pressure through fluid lines and adapted to be supplied with pressure fluid from said hydraulic pressure source for applying a brake force to a wheel of said vehicle and a brake-holding valve mechanism disposed in said fluid line, said brake-holding valve mechanism comprising; a housing, a valve element received in said housing, a valve seat on which said valve elementis is adapted to be seated, said pressure fluid adapted to be held in said brake actuators when said valve element is seated on said valve seat, a means for unseating said valve element from said valve seat when a clutch pedal is released, a detecting means for detecting backward travel of the vehicle, and a means for providing flow communication between said brake actuators and said hydraulic pressure source when said detecting means detects the backward travel of said vehicle independently of the position of said clutch pedal.
Claim 2
Dependent Claim
42 words
(2) The brake system for use in a vehicle claimed in claim 1, wherein, said valve element is a ball shaped element which is movably received in a sleeve-shaped ball guide which is provided with said valve seat in the end thereof.
Claim 3
Dependent Claim
61 words
(3) The brake system for use in a vehicle claimed in claim 2, wherein, said valve seat has a bore formed therethrough in which a plunger is provided and the projection of said plunger into said ball guide prevents said valve element from seating of said valve seat, said plunger being actuated in response to the movement of said clutch pedal.
Claim 4
Dependent Claim
31 words
(4) The brake system for use in a vehicle claimed in claim 3, wherein, said providing means comprising a means for proventing said valve element from seating on said valve seat.
Claim 5
Dependent Claim
40 words
(5) The brake system for use in a vehicle claimed in claim 4, wherein, said preventing means comprising a plunger and a means for forcing said plunger to project into said ball guide between said valve element and valve seat.
Claim 6
Dependent Claim
25 words
(6) The brake system for use in a vehicle claimed in claim 5, wherein, said forcing means is a solenoid which accepts said plunger therein.
Claim 7
Dependent Claim
88 words
(7) The brake system for use in a vehicle claimed in claim 1, wherein, said valve element and valve seat being adapted to operate wheel cylinders of the left-side front and the right-side rear brake actuators, and another valve means is provided to operate wheel cylinders of the right-side front and the left-side rear brake actuators such that said another valve means permits pressure to be released from said brake actuators to said source of hydraulic pressure when said valve element is prevented from seating on said seat.
References Cited (Backward Citations)
No citation records indexed.
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