US4116493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake pressure control valve
Assignee: Tokico Ltd
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Filing: 1977-11-10
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Granted: 1978-09-26
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Expires: 1997-11-10
Abstract
Abstract A brake pressure control valve including an inertia member being movable in response to the inertia force acting on the member, particularly when the rate of deceleration caused by braking action exceeds a predetermined amount, so as to close a fluid passage for controlling braking pressure, in which a stop member is mounted in a housing of the pressure control valve and being operable manually from the outside of the valve so as to abut with the inertia member for preventing the fluid passage from being closed by the inertia member.
Inventors
- 👤 Yoshihiro Hayashida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:58
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/26; B60T8/28; B60T8/285
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
A brake pressure control valve including an inertia member being movable in response to the inertia force acting on said member, particularly when the rate of deceleration caused by braking action exceeds a predetermined amount, so as to close a fluid passage for controlling hydraulic braking pressure being supplied through said valve, in which a stop member is mounted in a housing of said valve and being operable manually from the outside of the housing so as to abut with the inertia member for preventing said fluid passage from being closed by said inertia member.
Claim 2
Dependent Claim
95 words
A brake pressure control valve including an inertia member being movable in response to the inertia force acting on said member, particularly when the rate of deceleration caused by braking action exceeds a predetermined amount, so as to close a fluid passage for controlling hydraulic braking pressure being supplied through said valve, in which a stop member is mounted in a housing of said valve and being operable manually from the outside of the housing so as to abut with the inertia member for preventing said fluid passage from being closed by said inertia member.
Claim 3
Dependent Claim
67 words
A brake pressure control valve as set forth in claim 1 in which the stop member is slidably and sealingly received in a bore of the housing with one end projecting normally to the outside of the housing and the other end of which being adapted to abut with the inertia member for restricting the movement thereof when said one end is pushed inwards of the housing.
Claim 4
Dependent Claim
57 words
A brake pressure control valve as set forth in claim 2 in which a valve seat for cooperating with the inertia member is defined on the inner end of said bore, and said stop member has a reduced diameter portion extending longitudinally and loosely in the bore and defining said other end on the tip end thereof.
Claim 5
Dependent Claim
44 words
A brake pressure control valve as set forth in claim 2 in which said bore receiving the stop member therein extends transversely relative to the direction of the movement of said inertia member, and the inertia member is in the form of a ball.
References Cited (Backward Citations)
US3771835A
Cited
GB1321921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |