Patent US4037617A successfully refreshed from Google Patents.
US4037617A
Expired / Lapsed
US
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Multiway pneumatic valve and its application to brake
Assignee: Individual
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Filing: 1975-12-04
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Granted: 1977-07-26
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Expires: 1995-12-04
Abstract
Abstract Multiway pneumatic valve comprising supply inlet and a plurality of separate outlets connected to the inlet by separate circuits. Third and fourth circuits are respectively in series with first and second circuits. Calibrated diaphragms are exposed at their periphery to the supply pressure and in their central portion to the pressure in the tank which they control. If a tank fails, the corresponding diaphragm isolates this tank. Flaps each comprising a loose strip isolate the whole tank system in the case of a supply failure. The valve can be applied to any gas distribution problem and more particularly to pneumatic brake circuits.
Inventors
- 👤 Fernando Perales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T11/326; G; G05; G05D; G05D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2655; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7843; Y10T137/8593; Y10T137/87169; Y10T137/87193; Y10T137/87201; Y10T137/877; Y10T137/87893; Y10T137/87917
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
327 words
A fluid feeding system for feeding a fluid under different pressures to first and second outlets, said feeding system including a fluid supply inlet; first and second conduits communicating with the fluid supply inlet; first and second check valve means respectively mounted in the first and second conduits for controlling the flow of fluid therein; first and second diaphragms each having first and second faces, means cooperating with the first face of the respective diaphragms, said means forming a circular opening, an annular bearing surface surrounding said opening and an annular chamber surrounding said annular bearing surface; adjustable spring means respectively cooperating with the second faces of the respective diaphragms, the said annular chambers each having an annular open surface facing the diaphragm, the area of said open surface being substantially larger than the area of said annular bearing surface, the diaphragm being adapted to assume a rest position in which its first face closes the opening and the annular bearing surface and isolates each said annular chamber from its said surrounded circular opening, and a raised position in which the annular chamber and circular opening are opened and connected together, said first and second conduits communicating with the respective annular chambers which cooperate with the first and second diaphragms, respectively, third and fourth conduits respectively communicating with the circular openings downstream of the respective first and second diaphragms, each of said third and fourth conduits having an outlet to a closed tank, and a bypass bypassing said closed tanks comprising each of said third and fourth conduits forming a chamber having therein a seat and an annular bearing surface surrounding the conduit, third and fourth valve means each comprising a diaphragm made of resilient material, a flap valve cut from said diaphragm and engaging the bearing surface, and spring means supported on said seat and engaging the flap valve, said third and fourth conduits communicating through said third and fourth valve means with auxiliary tank means.
Claim 2
Dependent Claim
327 words
A fluid feeding system for feeding a fluid under different pressures to first and second outlets, said feeding system including a fluid supply inlet; first and second conduits communicating with the fluid supply inlet; first and second check valve means respectively mounted in the first and second conduits for controlling the flow of fluid therein; first and second diaphragms each having first and second faces, means cooperating with the first face of the respective diaphragms, said means forming a circular opening, an annular bearing surface surrounding said opening and an annular chamber surrounding said annular bearing surface; adjustable spring means respectively cooperating with the second faces of the respective diaphragms, the said annular chambers each having an annular open surface facing the diaphragm, the area of said open surface being substantially larger than the area of said annular bearing surface, the diaphragm being adapted to assume a rest position in which its first face closes the opening and the annular bearing surface and isolates each said annular chamber from its said surrounded circular opening, and a raised position in which the annular chamber and circular opening are opened and connected together, said first and second conduits communicating with the respective annular chambers which cooperate with the first and second diaphragms, respectively, third and fourth conduits respectively communicating with the circular openings downstream of the respective first and second diaphragms, each of said third and fourth conduits having an outlet to a closed tank, and a bypass bypassing said closed tanks comprising each of said third and fourth conduits forming a chamber having therein a seat and an annular bearing surface surrounding the conduit, third and fourth valve means each comprising a diaphragm made of resilient material, a flap valve cut from said diaphragm and engaging the bearing surface, and spring means supported on said seat and engaging the flap valve, said third and fourth conduits communicating through said third and fourth valve means with auxiliary tank means.
Claim 3
Dependent Claim
114 words
A fluid feeding system as claimed in claim 1, said system comprising first and second flat blocks having parallel opposite surfaces forming an elongated gap therebetween, the said conduits being bored through said blocks and the said chambers being formed within said blocks, whereas the diaphragms of the first and second valve means consist of a single resilient sheet inserted in the said gap, the second block having an outer surface which froms the said annular chambers and the said annular bearing surfaces cooperating with the said first and second diaphragms, the said flap valves each including a cut out portion of the said sheet and reinforcement patches stuck on said cut out portion.
Claim 4
Dependent Claim
21 words
A fluid feeding system according to claim 2, wherein the first and second diaphragms are cut from a cloth-faced reinforced sheet.
Claim 5
Dependent Claim
320 words
A fluid feeding system as claimed in claim 1, further comprising third and fourth diaphragms each having first and second faces, means cooperating with the first face of the respective diaphragms, said means forming a circular opening, an annular bearing surface surrounding said opening and an annular chamber surrounding said annular bearing surface; adjustable spring means respectively cooperating with the second faces of the respective diaphragms, the said annular chambers each having an annular open surface facing the diaphragm, the area of said open surface being substantially larger than the area of said annular bearing surface, the diaphragm being adapted to assume a rest position in which it closes and isolates one from the other the annular chamber and the circular opening, and a raised position in which the annular chamber and circular opening are opened and connected together; fifth and sixth conduits and fifth and sixth valve means respectively mounted in the fifth and sixth conduits each of said fifth and sixth conduits forming a chamber having therein a seat and an annular bearing surface surrounding the conduit, each of said fifth and sixth valve means comprising a diaphragm made of resilient material, a flap valve cut from said diaphragm and engaging the bearing surface, and spring means supported on said seat and engaging the flap valve; said fifth and sixth conduits communicating with the respective annular chambers which cooperate with the third and fourth diaphragms, respectively; said first and second outlets being arranged on said third and fourth conduits upstream of said third and fourth valve means, the fifth conduit being connected to the third conduit downstream of the third valve means and the sixth conduit being connected to the fourth conduit downstream of the fourth valve means, the fifth and sixth conduits being mutually interconnected, and seventh and eighth conduits respectively communicating with the circular openings of the third and fourth diaphragms and each having an outlet.
Claim 6
Dependent Claim
42 words
A fluid feeding system according to claim 4, wherein the spring means cooperating with the third and fourth diaphragms exert a pressure thereon which is substantially lower than the pressure exerted by the spring means cooperating with the first and second diaphragms.
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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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |