US3905655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-modulation device applicable especially to the braking circuit of an automobile vehicle and a braking circuit equipped with said device
Assignee: Valeo SE
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Filing: 1974-05-17
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Granted: 1975-09-16
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Expires: 1994-05-17
Abstract
Abstract A fluid-pressure-modulation device intended to be interposed between any hydraulic control and any receiver device, especially for the braking circuits of automobile vehicles, comprises essentially a first chamber connected to the control and a second chamber connected to the receiver. The chambers communicate with each other through a first passage controlled by a regulating valve which is normally closed, and also through a second passage formed axially in the regulating valve and controlled by an isolating valve which is normally open. The regulating and isolating valves form conjointly a valve unit which is movable in the first chamber and has a guiding tail slidably engaged in a fluid-tight manner in a bore coupled to the second chamber. The isolating valve is integrally housed in the regulating valve, and the guiding tail of the valve unit is carried by the regulating valve.
Inventors
- 👤 Gennes Gerard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:56
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/16; B60T13/161; B60T8/00; B60T8/32; B60T8/34; B60T8/50; B60T8/5018; B60T8/5025; B60T8/5037; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87378; Y10T137/87507
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
139 words
A modulating device for interposition between a hydraulic control and a receiver, comprising a first chamber adapted to be connected to said control, a second chamber adapted to be connected to said receiver, said chambers communicating with each other through a first passage, a normally closed regulating valve member controlling said first passage, said chambers also communicating with each other through a second passage which is disposed axially in said regulating valve member, a normally open isolating valve member controlling said second passage, and a guiding tail carried by said regulating valve member and slidably engaged in a fluid-tight manner in a bore connected to said second chamber to the rear of said guiding tail, said isolating valve member being housed in a recess which is integral with said regulating valve member and into which said second passage opens.
Claim 2
Dependent Claim
139 words
A modulating device for interposition between a hydraulic control and a receiver, comprising a first chamber adapted to be connected to said control, a second chamber adapted to be connected to said receiver, said chambers communicating with each other through a first passage, a normally closed regulating valve member controlling said first passage, said chambers also communicating with each other through a second passage which is disposed axially in said regulating valve member, a normally open isolating valve member controlling said second passage, and a guiding tail carried by said regulating valve member and slidably engaged in a fluid-tight manner in a bore connected to said second chamber to the rear of said guiding tail, said isolating valve member being housed in a recess which is integral with said regulating valve member and into which said second passage opens.
Claim 3
Dependent Claim
24 words
A modulation device as claimed in claim 1, in which said recess is formed in said guiding tail and communicates with said first chamber.
Claim 4
Dependent Claim
28 words
A modulation device as claimed in claim 2, in which said recess is surrounded by a perforated cage for the maintenance and guiding of said isolating valve member.
Claim 5
Dependent Claim
38 words
A modulation device as claimed in claim 1, in which, facing said second passage, said recess includes a bottom wall on which are supported elastic means urging said isolating valve member in the direction of said second passage.
Claim 6
Dependent Claim
36 words
A modulation device as claimed in claim 1, in which said recess is formed between the regulating valve member and a hood which is fixed to said regulating valve member, and which carries said guiding tail.
Claim 7
Dependent Claim
20 words
A modulation device as claimed in claim 1, in which said regulating valve member is fixed to a flexible diaphragm.
Claim 8
Dependent Claim
14 words
An automotive vehicle braking circuit having a modulation device as claimed in claim 1.
References Cited (Backward Citations)
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US3463556A
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US3724914A
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US3792908A
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US3801161A
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US3836207A
Cited
US3782786A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |