Patent US3358708A successfully refreshed from Google Patents.
US3358708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling devices for pipes or conduits
Assignee: BP PLC
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Filing: 1964-05-13
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Granted: 1967-12-19
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Williams Peter Gillingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:37
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/36; F16L37/08; F16L37/10; F16L37/113; F16L37/24; F16L37/244; F16L37/252; F16L37/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87965; Y10T137/87973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A COUPLING DEVICE FOR PIPES OR CONDUITS COMPRISING, A COUPLING MEMBER PROVIDED WITH A VALVE MEMBER HAVING A FIRST PASSAGE CONTAINING AN AUXILIARY VALVE MEMBER THEREIN, A PISTON MECHANICALLY COUPLED TO SAID VALVE MEMBER, FLUID PRESSURE EQUALIZING MEANS FOR EQUALIZING THE PRESSURE ON EITHER SIDE OF SAID PISTON, AND MANUALLY OPERABLE MEANS TO INACTIVATE SAID FLUID PRESSURE EQUALIZING MEANS, SAID MANUALLY OPERABLE MEANS BEING MECHANICALLY COUPLED TO SAID VALVE MEMBER, SAID VALVE MEMBER ADAPTED TO MOVE FROM A CLOSED TO AN OPEN POSITION IN A DIRECTION OPPOSITE TO THAT OF THE FLUID FLOW THROUGH THE COUPLING MEMBER, MOVEMENT OF SAID VALVE MEMBER BEING CAUSED BY FLUID FLOWING ONLY THROUGH SAID FIRST PASSAGE INTO SAID COUPLING MEMBER AS A RESULT OF MECHANICAL PRESSURE APPLIED TO SAID AUXILIARY VALVE MEMBER SO AS TO CAUST IT TO MOVE FROM A CLOSED TO AN OPEN POSITION, THE PRESSURE OF THE FLUID FLOWING THROUGH SAID FIRST PASSAGE MOVING SAID PISTON WHEN SAID MANUALLY OPERABLE MEANS IS OPERATED TO INACTIVATE SAID FLUID PRESSURE EQUALIZING MEANS, SAID MOVEMENT OF SAID PISTON CAUSING SAID VALVE MEMBER TO MOVE TO SAID OPEN POSITION.
Claim 2
Dependent Claim
184 words
A COUPLING DEVICE FOR PIPES OR CONDUITS COMPRISING, A COUPLING MEMBER PROVIDED WITH A VALVE MEMBER HAVING A FIRST PASSAGE CONTAINING AN AUXILIARY VALVE MEMBER THEREIN, A PISTON MECHANICALLY COUPLED TO SAID VALVE MEMBER, FLUID PRESSURE EQUALIZING MEANS FOR EQUALIZING THE PRESSURE ON EITHER SIDE OF SAID PISTON, AND MANUALLY OPERABLE MEANS TO INACTIVATE SAID FLUID PRESSURE EQUALIZING MEANS, SAID MANUALLY OPERABLE MEANS BEING MECHANICALLY COUPLED TO SAID VALVE MEMBER, SAID VALVE MEMBER ADAPTED TO MOVE FROM A CLOSED TO AN OPEN POSITION IN A DIRECTION OPPOSITE TO THAT OF THE FLUID FLOW THROUGH THE COUPLING MEMBER, MOVEMENT OF SAID VALVE MEMBER BEING CAUSED BY FLUID FLOWING ONLY THROUGH SAID FIRST PASSAGE INTO SAID COUPLING MEMBER AS A RESULT OF MECHANICAL PRESSURE APPLIED TO SAID AUXILIARY VALVE MEMBER SO AS TO CAUST IT TO MOVE FROM A CLOSED TO AN OPEN POSITION, THE PRESSURE OF THE FLUID FLOWING THROUGH SAID FIRST PASSAGE MOVING SAID PISTON WHEN SAID MANUALLY OPERABLE MEANS IS OPERATED TO INACTIVATE SAID FLUID PRESSURE EQUALIZING MEANS, SAID MOVEMENT OF SAID PISTON CAUSING SAID VALVE MEMBER TO MOVE TO SAID OPEN POSITION.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |