US3707162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logic control valve
Assignee: Westinghouse Bremsen und Apparatebau GmbH
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Filing: 1971-04-08
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Granted: 1972-12-26
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Expires: 1991-04-08
Abstract
Abstract A fluid logic valve device of the type having a fluid pressure supply port, an exhaust port, and an operating diaphragm member selectively subjectable to a control pressure, whereby the valve device may be employed wither as an AND device or as a NOT device by interchanging the fluid pressure supply and exhaust connections relative to said ports, and wherein the improvement comprises a pair of coplanar, concentrically arranged annular valve seats of different diameters and with which respective interchangeable valve elements are used to provide a high ratio of control pressure area to supply pressure area, for both the AND and NOT functions, and therefore insure positive, quick action of the device.
Inventors
- 👤 Wilhelm Bachmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:32
CPC Classifications
F; F15; F15C; F15C3/00; F15C3/04; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
382 words
A fluid logic valve device comprising: a. a housing having: i. a control pressure chamber, ii. an atmospheric chamber, iii. a fluid pressure inlet to which fluid pressure may be supplied, and iv. a fluid pressure outlet from which fluid pressure may be delivered; b. a resilient diaphragm member secured in said housing, said diaphragm member being subject on one side to control pressure in said control chamber and on the opposite side to opposing force of supply pressure supplied to said inlet; c. a valve operating member having one end secured to said diaphragm member on said opposite side thereof for movement with the diaphragm member and being reciprocably disposed in a bore formed coaxially in said housing; d. first valve means disposed partly on said one end of said valve operating member and partly on one end of said bore adjacent thereto; e. second valve means disposed partly on the opposite end of said valve operating member and partly on the opposite end of said bore adjacent thereto, f. said valve operating member being operable from a first position in which one of said first and second valve means cuts off communication between said outlet and said atmospheric chamber, and the other of said first and second valve means effects communication between said inlet and said outlet, to a second position in which said one of said first and second valve means effects communication between said outlet and said atmospheric chamber, and said other of said first and second valve means cuts off communication between said inlet and said outlet, g. said valve operator being operable to one of said first and second positions in response to the force of fluid pressure in the inlet acting on said opposite side of the diaphragm member, and being operable to the other of said first and second positions in response to said control pressure in the control chamber acting on said one side of the diaphragm; and wherein the improvement comprises h. means for varying the effective pressure area of said opposite side of said diaphragm member to provide a preselected pressure differential across the two sides thereof for effecting positive movement of the valve operating member from one to the other, and vice versa, of said first and second positions thereof.
Claim 2
Dependent Claim
382 words
A fluid logic valve device comprising: a. a housing having: i. a control pressure chamber, ii. an atmospheric chamber, iii. a fluid pressure inlet to which fluid pressure may be supplied, and iv. a fluid pressure outlet from which fluid pressure may be delivered; b. a resilient diaphragm member secured in said housing, said diaphragm member being subject on one side to control pressure in said control chamber and on the opposite side to opposing force of supply pressure supplied to said inlet; c. a valve operating member having one end secured to said diaphragm member on said opposite side thereof for movement with the diaphragm member and being reciprocably disposed in a bore formed coaxially in said housing; d. first valve means disposed partly on said one end of said valve operating member and partly on one end of said bore adjacent thereto; e. second valve means disposed partly on the opposite end of said valve operating member and partly on the opposite end of said bore adjacent thereto, f. said valve operating member being operable from a first position in which one of said first and second valve means cuts off communication between said outlet and said atmospheric chamber, and the other of said first and second valve means effects communication between said inlet and said outlet, to a second position in which said one of said first and second valve means effects communication between said outlet and said atmospheric chamber, and said other of said first and second valve means cuts off communication between said inlet and said outlet, g. said valve operator being operable to one of said first and second positions in response to the force of fluid pressure in the inlet acting on said opposite side of the diaphragm member, and being operable to the other of said first and second positions in response to said control pressure in the control chamber acting on said one side of the diaphragm; and wherein the improvement comprises h. means for varying the effective pressure area of said opposite side of said diaphragm member to provide a preselected pressure differential across the two sides thereof for effecting positive movement of the valve operating member from one to the other, and vice versa, of said first and second positions thereof.
Claim 3
Dependent Claim
62 words
A fluid logic valve device, as set forth in claim 1, further characterized by passage means formed on the peripheral surface of said valve operating member via which said outlet may be communicated through said bore to one of said inlet and said atmospheric chamber when said valve operating member is in the respective one of its said first and second positions.
Claim 4
Dependent Claim
121 words
A fluid logic valve device, as set forth in claim 2, wherein said means for varying the effective pressure area of said opposite side of the diaphragm member comprises: a. a pair of annular valve seats of different diametral dimensions concentrically formed at said one end of said bore, and b. interchangeable annular valve elements coinciding in dimension with the respective diametral dimensions of said annular valve seats, a preselected one of said valve elements being secured concentrically to said opposite side of said diaphragm member adjacent said one of the valve operating member to provide the desired effective pressure area on said opposite side of the diaphragm member when said valve element is seated on the diametrally corresponding valve seat.
Claim 5
Dependent Claim
18 words
A fluid logic valve device, as set forth in claim 3, wherein said annular valve seats are coplanar.
Claim 6
Dependent Claim
60 words
A fluid logic valve device, as set forth in claim 3, further characterized by a valve plate for mounting said annular valve element in surrounding relation to said one end of the valve operating member, said valve plate being removably and abuttingly secured between said one end of said valve operating member and said opposite side of the diaphragm member.
Claim 7
Dependent Claim
47 words
A fluid logic valve device, as set forth in claim 3, wherein the larger of said annular valve elements is provided with recess means extending over the smaller of said annular valve seats to prevent entrapment of fluid pressure in the space between the annular valve seats.
Claim 8
Dependent Claim
73 words
A fluid logic valve deVice, as set forth in claim 1, further characterized by a control port formed in said housing, via which control pressure may be supplied to said pressure control chamber, and an exhaust port via which said atmospheric chamber is vented to atmosphere, said fluid pressure inlet, fluid pressure outlet, control port and exhaust port each having a connecting end opening to a common external plane surface of the housing.
Claim 9
Dependent Claim
49 words
A fluid logic valve device, as set forth in claim 7, wherein said atmospheric chamber is disposed adjacent said opposite side of said diaphragm member with said one end of said bore opening thereto and with said first valve means controlling communication between said atmospheric chamber and said bore.
Claim 10
Dependent Claim
50 words
A fluid logic valve device, as set forth in claim 7, wherein said atmospheric chamber is disposed adjacent said opposite end of said valve operating member with said opposite end of said bore opening thereto and with said second valve means controlling communication between said atmospheric chamber and said bore.
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |