US3647175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control valve
Assignee: Individual
•
Filing: 1970-03-04
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Granted: 1972-03-07
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Expires: 1990-03-04
Abstract
Abstract A fluid flow control valve comprises a cylindrical tube slidably mounted in a wall between the inlet and outlet valve chambers. One end of the tube is spring urged against the valve seat, so that the spring action plus the pressure against the other end of the tube holds the valve closed. In the open valve position, what acts on the tube is the spring and the difference of the pressures in the two chambers that bear against the tube ends.
Inventors
- 👤 Andre Bonneau
- 👤 Henri Bontems
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:52
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A fluid flow control valve comprising a valve body with a rigid wall dividing the interior of the valve body into two chambers, an inlet communicating with one of said chambers and an outlet communicating with the other of said chambers, a tube open at both ends extending in axially sliding sealed relation through said rigid wall, a valve seat mounted in one of said chambers to receive and close one end of said tube, means resiliently urging one end of said tube closed against said seat, and means to exert a force on said tube against said urging means to open the valve.
Claim 2
Dependent Claim
104 words
A fluid flow control valve comprising a valve body with a rigid wall dividing the interior of the valve body into two chambers, an inlet communicating with one of said chambers and an outlet communicating with the other of said chambers, a tube open at both ends extending in axially sliding sealed relation through said rigid wall, a valve seat mounted in one of said chambers to receive and close one end of said tube, means resiliently urging one end of said tube closed against said seat, and means to exert a force on said tube against said urging means to open the valve.
Claim 3
Dependent Claim
24 words
A valve as claimed in claim 1, in which the means exerting a force on the tube against said urging means are manometric means.
Claim 4
Dependent Claim
24 words
A valve as claimed in claim 1, and a relatively flexible element mounting said valve seat on the internal wall of the valve body.
References Cited (Backward Citations)
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FR1110895A
Cited
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US3155365A
Cited
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Cited
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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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |