US3354792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure actuated seal
Assignee: AT&T Inc
•
Filing: 1965-06-03
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Granted: 1967-11-28
•
Expires: 1985-06-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis Joseph Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:00
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A SEAL FOR PREVENTING LEAKAGE OF FLUID PRESSURIZED TO A RELATIVELY HIGH PRESSURE LEVEL, FROM A FIRST REGION TO A SECOND RELATIVELY LOW PRESSURE REGION COMPRISING: A FIRST MEMBER FOR SPANNING AN OPENING TO BE SEALED; MEANS DEFINING A CHAMBER POSITIONED ADJACENT SAID FIRST MEMBER ON THE SIDE THERETO TOWARD THE FIRST REGION; AND A PRESSURE GELABLE FLUID IN SAID CHAMBER WHICH PRESSURE GELABLE FLUID THICKENS AT A PRESSURE LOWER THAN SAID RELATIVELY HIGH PRESSURE, A PRESSURE DIFFERENTIAL ACROSS THE CHAMBER CAUSING SAID GELABLE FLUID TO CONFORM TO THE SHAPE OF THE CHAMBER AND TO SOLIDIFY THEREBY ENHANCING THE SEAL PROVIDED BY SAID FIRST MEMBER.
Claim 2
Dependent Claim
105 words
A SEAL FOR PREVENTING LEAKAGE OF FLUID PRESSURIZED TO A RELATIVELY HIGH PRESSURE LEVEL, FROM A FIRST REGION TO A SECOND RELATIVELY LOW PRESSURE REGION COMPRISING: A FIRST MEMBER FOR SPANNING AN OPENING TO BE SEALED; MEANS DEFINING A CHAMBER POSITIONED ADJACENT SAID FIRST MEMBER ON THE SIDE THERETO TOWARD THE FIRST REGION; AND A PRESSURE GELABLE FLUID IN SAID CHAMBER WHICH PRESSURE GELABLE FLUID THICKENS AT A PRESSURE LOWER THAN SAID RELATIVELY HIGH PRESSURE, A PRESSURE DIFFERENTIAL ACROSS THE CHAMBER CAUSING SAID GELABLE FLUID TO CONFORM TO THE SHAPE OF THE CHAMBER AND TO SOLIDIFY THEREBY ENHANCING THE SEAL PROVIDED BY SAID FIRST MEMBER.
References Cited (Backward Citations)
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US2211456A
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US2349253A
Cited
US3062600A
Cited
US3204858A
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US3117792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |