Patent US3331378A successfully refreshed from Google Patents.
US3331378A
Expired / Lapsed
US
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Relief device for tubing pressure
Assignee: Individual
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Filing: 1964-04-29
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Granted: 1967-07-18
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Joe W Gibbs
- 👤 Britt O Braddick
- 👤 Philip E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:48
CPC Classifications
F; F16; F16L; F16L29/00; E; E21; E21B; E21B34/00; E21B34/06; E21B34/10; E21B34/102; E21B34/103; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1669; Y10T137/1677; Y10T137/7722; Y10T137/7734; Y10T137/7837; Y10T137/7854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PRESSURE RETAINING AND RELIEF DEVICE FOR TUBING COMPRISING A HOUSING FOR INCORPORATION IN TUBING IN ALIGNMENT THEREWITH, CLOSURE MEANS MOVABLY MOUNTED INSIDE SAID HOUSING, SAID HOUSING DEFINING A CHAMBER IN FLUID COMMUNICATION WITH FLUID PRESSURES ON OPPOSITE SIDES OF SAID CLOSURE MEANS, A LOCKING MEMBER MOVABLE BETWEEN POSITIONS, RESPECTIVELY, FOR LOCKING SAID CLOSURE MEANS IN ITS HOUSING CLOSING POSITION AND RELEASING SAID MEANS, SAID MEMBER BEING NORMALLY BIASED TOWARD ITS CLOSURE MEANS RELEASING POSITION AND EXTENDING INTO SAID CHAMBER, A CONTROL DEVICE MOVABLE IN SAID CHAMBER BETWEEN POSITIONS, RESPECTIVELY, FOR HOLDING SAID LOCKING MEMBER IN A CLOSURE MEANS LOCKING POSITION AND FOR RELEASING SAID LOCKING MEMBER, AND MEANS RELEASABLY RETAINING SAID CONTROL DEVICE IN ITS LOCKING MEMBER HOLDING POSITION, SAID CONTROL DEVICE RESPONDING TO PRESSURE DIFFERENTIAL ACROSS SAID CLOSURE MEMBER ABOVE A PREDETERMINED MINIMUM VALUE TO MOVE TO ITS LOCKING MEMBER RELEASE POSITION, SAID CLOSURE MEANS
Claim 2
Dependent Claim
147 words
A PRESSURE RETAINING AND RELIEF DEVICE FOR TUBING COMPRISING A HOUSING FOR INCORPORATION IN TUBING IN ALIGNMENT THEREWITH, CLOSURE MEANS MOVABLY MOUNTED INSIDE SAID HOUSING, SAID HOUSING DEFINING A CHAMBER IN FLUID COMMUNICATION WITH FLUID PRESSURES ON OPPOSITE SIDES OF SAID CLOSURE MEANS, A LOCKING MEMBER MOVABLE BETWEEN POSITIONS, RESPECTIVELY, FOR LOCKING SAID CLOSURE MEANS IN ITS HOUSING CLOSING POSITION AND RELEASING SAID MEANS, SAID MEMBER BEING NORMALLY BIASED TOWARD ITS CLOSURE MEANS RELEASING POSITION AND EXTENDING INTO SAID CHAMBER, A CONTROL DEVICE MOVABLE IN SAID CHAMBER BETWEEN POSITIONS, RESPECTIVELY, FOR HOLDING SAID LOCKING MEMBER IN A CLOSURE MEANS LOCKING POSITION AND FOR RELEASING SAID LOCKING MEMBER, AND MEANS RELEASABLY RETAINING SAID CONTROL DEVICE IN ITS LOCKING MEMBER HOLDING POSITION, SAID CONTROL DEVICE RESPONDING TO PRESSURE DIFFERENTIAL ACROSS SAID CLOSURE MEMBER ABOVE A PREDETERMINED MINIMUM VALUE TO MOVE TO ITS LOCKING MEMBER RELEASE POSITION, SAID CLOSURE MEANS
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |