US3674236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Rhone Poulenc SA
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Filing: 1970-02-06
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Granted: 1972-07-04
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Expires: 1990-02-06
Abstract
Abstract The valve for controlling the flow of a fluid, particularly very small flows, comprising a block having at least one smooth face and at least two ducts extending through the block and terminating in the smooth face in an orifice. A slide is guided for movement substantially parallel to the smooth face and is moved, e.g. by means of a screw or pneumatically. A valve element movable with the slide is urged into sliding contact with the smooth face and a recess in the valve element is dimensioned to overlie and connect at least two of the orifices in at least one position of the slide.
Inventors
- 👤 Roger Commarmot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:53
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
194 words
A valve for precisely controlling the flow of a fluid, said valve comprising, in combination; a. a block having at least one smooth face; b. means defining at least two ducts in said block, said ducts each terminAting at said smooth face in an orifice; c. a slide movable with respect to said block; d. guide means guiding said slide for movement substantially parallel to said smooth face; e. control means for effecting said movement; f. a valve element movable with said slide and in sliding contact with said smooth face, said valve element being located in a member provided with rounded side walls, said member sliding in said slide without play between the rounded side walls and the slide, the valve element overlying all of the orifices in all positions of the slide; g. spring means acting between said slide and valve element, urging said valve element against said smooth face; and h. a recess in said valve element dimensioned effective to overlie and connect at least two of said orifices in at least one position of said slide, the flow of fluid from one orifice to another being entirely via said recess.
Claim 2
Dependent Claim
194 words
A valve for precisely controlling the flow of a fluid, said valve comprising, in combination; a. a block having at least one smooth face; b. means defining at least two ducts in said block, said ducts each terminAting at said smooth face in an orifice; c. a slide movable with respect to said block; d. guide means guiding said slide for movement substantially parallel to said smooth face; e. control means for effecting said movement; f. a valve element movable with said slide and in sliding contact with said smooth face, said valve element being located in a member provided with rounded side walls, said member sliding in said slide without play between the rounded side walls and the slide, the valve element overlying all of the orifices in all positions of the slide; g. spring means acting between said slide and valve element, urging said valve element against said smooth face; and h. a recess in said valve element dimensioned effective to overlie and connect at least two of said orifices in at least one position of said slide, the flow of fluid from one orifice to another being entirely via said recess.
Claim 3
Dependent Claim
48 words
A valve as claimed in claim 1, wherein said guide means comprise two substantially parallel and non-extensible flexible blades connected to said block and said slide in planes substantially perpendicular to the smooth face, the valve element being positioned in said slide at a location between said blades.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |