Patent US3073565A successfully refreshed from Google Patents.
US3073565A
Expired / Lapsed
US
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Gate-valve
Assignee: Individual
•
Filing: 1961-11-01
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Granted: 1963-01-15
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Expires: 1981-11-01
Abstract
No abstract record available.
Inventors
- 👤 Georges F A Daumy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:46
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K27/00; F16K27/04; F16K27/044; F16K27/047; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721; Y10T74/1973; Y10T74/20; Y10T74/20006; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20576; Y10T74/20732; Y10T74/20738; Y10T74/20882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A GATE-VALVE WITH A FLUID-TIGHT CONTROL FOR A FLUID CONDUIT, COMPRISING A CLOSURE MEMBER ON THE FLUID CONDUIT, A FLUID-TIGHT CHAMBER AROUND SAID CLOSURE MEMBER, A TUBULAR COIL COUPLED TO SAID CLOSURE MEMBER AND FIXED AT AT LEAST ONE OF ITS EXTREMITIES IN A FLUID-TIGHT MANNER TO SAID FLUID-TIGHT CHAMBER AND OPENING TO THE EXTERIOR OF SAID CHAMBER, A SPIRAL SPRING HAVING OVER AT LEAST A PORTION OF ITS LENGTH WINDING PITCH DIFFERENT FROM THAT OF SAID TUBULAR COIL, MEANS FOR CONTROLLABLY ADVANCING SAID SPRING IN SAID COIL.
Claim 2
Dependent Claim
88 words
A GATE-VALVE WITH A FLUID-TIGHT CONTROL FOR A FLUID CONDUIT, COMPRISING A CLOSURE MEMBER ON THE FLUID CONDUIT, A FLUID-TIGHT CHAMBER AROUND SAID CLOSURE MEMBER, A TUBULAR COIL COUPLED TO SAID CLOSURE MEMBER AND FIXED AT AT LEAST ONE OF ITS EXTREMITIES IN A FLUID-TIGHT MANNER TO SAID FLUID-TIGHT CHAMBER AND OPENING TO THE EXTERIOR OF SAID CHAMBER, A SPIRAL SPRING HAVING OVER AT LEAST A PORTION OF ITS LENGTH WINDING PITCH DIFFERENT FROM THAT OF SAID TUBULAR COIL, MEANS FOR CONTROLLABLY ADVANCING SAID SPRING IN SAID COIL.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |