Patent US3266525A successfully refreshed from Google Patents.
US3266525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gate valve
Assignee: Usine De Wecker Sarl
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Filing: 1963-09-30
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Granted: 1966-08-16
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Wolter Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:48
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/20; F16K3/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A GAS-PIPE GATE VALVE FOR LARGE FLOW PASSAGE COMPRISING A CLOSURE DISK, MEANS FOR MOVING AND POSITIONING SAID CLOSURE DISK BETWEEN A FIXED PIPE END AND A SEAL RING WHICH IS MOVABLE ON THE OPPOSITE PIPE END, SAID CLOSURE DISK BEING WEDGE IN AXIALLY BY A PLURALITY OF PISTON-INCLUDING PRESSURE MEMBERS WHICH ARE UNIFORMLY DISTRIBUTED OVER THE CIRCUMFERENCE OF THE RING BY MEANS OF ENERGY STROING DEVICES, AND SAID CLOSURE DISK BEING HYDRAULICALLY RELEASED BY INTRODUCING PRESSURE MEANS INTO ASSOCIATED PRESSURE CHAMBERS, CHARACTERIZED BY THE FACT THAT THE PISTON OF EACH PRESSURE MEMBER AND ITS ASSOCIATED PRESSURE CHAMBER IS DISPOSED BETWEEN THE ASSOCIATED ENERGY-STORING DEVICE AND THE MOVABLE SEAL RING.
Claim 2
Dependent Claim
110 words
A GAS-PIPE GATE VALVE FOR LARGE FLOW PASSAGE COMPRISING A CLOSURE DISK, MEANS FOR MOVING AND POSITIONING SAID CLOSURE DISK BETWEEN A FIXED PIPE END AND A SEAL RING WHICH IS MOVABLE ON THE OPPOSITE PIPE END, SAID CLOSURE DISK BEING WEDGE IN AXIALLY BY A PLURALITY OF PISTON-INCLUDING PRESSURE MEMBERS WHICH ARE UNIFORMLY DISTRIBUTED OVER THE CIRCUMFERENCE OF THE RING BY MEANS OF ENERGY STROING DEVICES, AND SAID CLOSURE DISK BEING HYDRAULICALLY RELEASED BY INTRODUCING PRESSURE MEANS INTO ASSOCIATED PRESSURE CHAMBERS, CHARACTERIZED BY THE FACT THAT THE PISTON OF EACH PRESSURE MEMBER AND ITS ASSOCIATED PRESSURE CHAMBER IS DISPOSED BETWEEN THE ASSOCIATED ENERGY-STORING DEVICE AND THE MOVABLE SEAL RING.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |