US3796467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power brake system
Assignee: Aisin Corp
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Filing: 1972-11-30
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Granted: 1974-03-12
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Expires: 1992-11-30
Abstract
Abstract The invention relates to a hydraulic power brake system, comprising, a reservoir having two tanks, the two tanks being fluidically communicated or separated from each other in accordance with a predetermined liquid level thereof, a first power source connected with one of the two tanks and being normally in the operating state, a second power source connected with the other tank and being normally in the non-operating state, a valve means actuating the second power source when the first power source is damaged, and a fluid actuating means being operated by either of both power sources and connected with the other tank.
Inventors
- 👤 M Kito
- 👤 A Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:24
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/148; B60T17/00; B60T17/18; B60T17/22; B60T17/226
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A hydraulic power brake system comprising: a reservoir having two tanks, said two tanks being fluidically communicated when the liquid level of said two tanks exceeds a predetermined value and being separated from each other when said liquid level is lower than said predetermined value; a first power source connected with one of said tanks and being normally in the operating state; a second power source connected with the other of said tanks and being normally in the non-operating state; a valve means actuating said second power source when said first power source is damaged; and a fluid actuating means being operated by either of said power sources and connected with said other tank.
Claim 2
Dependent Claim
114 words
A hydraulic power brake system comprising: a reservoir having two tanks, said two tanks being fluidically communicated when the liquid level of said two tanks exceeds a predetermined value and being separated from each other when said liquid level is lower than said predetermined value; a first power source connected with one of said tanks and being normally in the operating state; a second power source connected with the other of said tanks and being normally in the non-operating state; a valve means actuating said second power source when said first power source is damaged; and a fluid actuating means being operated by either of said power sources and connected with said other tank.
Claim 3
Dependent Claim
63 words
The hydraulic power brake system as claimed in claim 1, wherein there is further provided at least two fluid actuating means, said first and second power sources including pump means and accumulator means respectively connected to said two fluid actuating means, said first and second power sources being accumulated into said accumulators by one of said pump means in the normal operating state.
Claim 4
Dependent Claim
66 words
The hydraulic power brake system as claimed in claim 2, wherein there is further provided a first control valve means for cutting off an inlet passageway of one of said accumulator means when one of said accumulators is damaged and for permitting the accumulation of fluid into said accumulators by actuating the other one of said pump means when said one normally operating pump is damaged.
Claim 5
Dependent Claim
46 words
The hydraulic power brake system as claimed in claim 1, wherein there is further provided at least two fluid actuating means operatively connected with said first and second power sources and operable by either of said first and second power sources in a normal operating state.
Claim 6
Dependent Claim
84 words
The hydraulic power brake system as claimed in claim 4, wherein there is further provided a second control valve means for cutting off an inlet passageway leading to one of said fluid actuating means when said one of said fluid actuating means is damaged and for connecting one of said first and second power sources with both of said fluid actuating means by actuating one of said first and second power sources when the other of said first and second power sources is damaged.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |