US3773082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve
Assignee: Bio Logics Products Inc
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Filing: 1971-01-05
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Granted: 1973-11-20
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Expires: 1991-01-05
Abstract
Abstract A fluid valve comprising a valve body, a stationary valve plate mounted to the valve body and having a flat sealing surface juxtaposed a recess in the body, the valve plate defining two outlet ports, a spring biased relatively movable valve slider member slidably engaging the valve plate within the valve body recess in surface-to-surface relation and having a fluid influent port therein to which fluid is continuously supplied and from which fluid is selectively communicable with either of the outlet ports, a sealed relation being maintained between the slider member and the valve plate as the slider member moves across the sealing surface between the outlet ports so that no fluid is isolated within the valve during fluid flow therethrough and the valve does not displace fluid into or out of the valve after the influent port clears one outlet port and before it achieves fluid communication with the other outlet port. Opposed diaphragm assemblies are mounted at opposite sides of the valve and respectively subjected to control fluid pressure at different points in time to shift the slider member from one operative position to the other as a result of displacement of an umbrella plate carried by each diaphragm and a pin interposed between one umbrella plate and one side of the slider member.
Inventors
- 👤 W Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:40
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
473 words
A fluid-controlled fluid valve comprisng: body means defining a space and comprising two stop means; fluid influent and effluent structure carried by the body means, the fluid influent and effluent structure comprising a stationary member secured to the body means and a slider member held within the space of the body means in contiguous surfaceto-surface sealed and slidable relation with the stationary member by biasing means, the slider member being slidable between two operative positions defined by the stop means, one of said members comprising an essentially linear passageway through which fluid is displaced when the valve is receiving fluid and which directly opens at the sealed surface of the one member, the other of said members comprising two juxtaposed essentially linear passageways either of which transmits fluid when the valve is receiving fluid and is in one of the two operative positions, each passageway of the other member directly opening at the sealed surface of the other member, the opening of each passageway of the other member being sized, shaped and located so that one passageway opening of the other member is aligned with the passageway opening of the one member and the second passageway opening of the other member is closed by the sealed surface of the one member when the valve is in one operative position, and the second passageway opening of the other member is aligned with the passageway opening of the one member and the one passageway opening of the other member is closed by the sealed surface of the one member when the valve is in the other operative position, a fluid influent member communicating with the linear passageway in said one member and reciprocable with said slider member, said biasing means comprising a configurated leaf spring interposed between the body means and the surface of said slider member opposite from said sealed surface engaging said surface of said slider member over the entire path of movement and formed with an elongated slot therethrough to receive and accommodate reciprocation of said fluid influent member; structure carried by the body means for shifting the slider member reciprocally in a path generally transversed to the axes of the passageway openings between engagement with the respective stop means from one operative position to the other, the shifting structure comprising fluid-tight chamber means, means for communicating fluid control pressure to the chamber means, flexible diaphragm means within the chamber means and against which the fluid control pressure is exerted to displace the diaphragm means, rigid means carried at one surface of the diaphrAgm means opposite where the fluid pressure is exerted, rod means reciprocally disposed in the body means and interposed between the rigid means and the slider member to impart the fluid control displacement of the diaphragm means to the slider member thereby sliding the slider member between operative positions.
Claim 2
Dependent Claim
473 words
A fluid-controlled fluid valve comprisng: body means defining a space and comprising two stop means; fluid influent and effluent structure carried by the body means, the fluid influent and effluent structure comprising a stationary member secured to the body means and a slider member held within the space of the body means in contiguous surfaceto-surface sealed and slidable relation with the stationary member by biasing means, the slider member being slidable between two operative positions defined by the stop means, one of said members comprising an essentially linear passageway through which fluid is displaced when the valve is receiving fluid and which directly opens at the sealed surface of the one member, the other of said members comprising two juxtaposed essentially linear passageways either of which transmits fluid when the valve is receiving fluid and is in one of the two operative positions, each passageway of the other member directly opening at the sealed surface of the other member, the opening of each passageway of the other member being sized, shaped and located so that one passageway opening of the other member is aligned with the passageway opening of the one member and the second passageway opening of the other member is closed by the sealed surface of the one member when the valve is in one operative position, and the second passageway opening of the other member is aligned with the passageway opening of the one member and the one passageway opening of the other member is closed by the sealed surface of the one member when the valve is in the other operative position, a fluid influent member communicating with the linear passageway in said one member and reciprocable with said slider member, said biasing means comprising a configurated leaf spring interposed between the body means and the surface of said slider member opposite from said sealed surface engaging said surface of said slider member over the entire path of movement and formed with an elongated slot therethrough to receive and accommodate reciprocation of said fluid influent member; structure carried by the body means for shifting the slider member reciprocally in a path generally transversed to the axes of the passageway openings between engagement with the respective stop means from one operative position to the other, the shifting structure comprising fluid-tight chamber means, means for communicating fluid control pressure to the chamber means, flexible diaphragm means within the chamber means and against which the fluid control pressure is exerted to displace the diaphragm means, rigid means carried at one surface of the diaphrAgm means opposite where the fluid pressure is exerted, rod means reciprocally disposed in the body means and interposed between the rigid means and the slider member to impart the fluid control displacement of the diaphragm means to the slider member thereby sliding the slider member between operative positions.
Claim 3
Dependent Claim
31 words
A valve as defined in claim 1 wherein the body means is of one-piece plastic construction, the space is a recess and the stop means are opposed walls of the recess.
Claim 4
Dependent Claim
31 words
A valve as defined in claim 1 wherein the stationary means and the slider means are each of one-piece plastic construction and comprise a hollow conduit constituting part of each passageway.
Claim 5
Dependent Claim
45 words
A valve as defined in claim 1 wherein the shifting structure comprises opposed chambers each containing a flexible diaphragm to which a plate is centrally attached and against which a pin is associated for direct displacement of the slider member between the two operative positions.
Claim 6
Dependent Claim
106 words
A valve as defined in claim 1 wherein the slider member and the stationary member are respectively fabricated in one piece of plastic material inert to corrosive fluid and wherein any two passageways when aligned one with the other comprise a generally linear flow path of essentially uniform shape and size which causes all fluid in the valve to be immediately purged from the valve upon subsequent fluid flow to the valve whereby friction loss and pressure drop through the valve are negligible, corrosion does not result, contamination and static entrapment of fluid is avoided and the fluid dispensed from the valve is of precise quantity.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |