US3328039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-proof seal
Assignee: ABB Inc USA
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Filing: 1965-02-08
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Granted: 1967-06-27
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Mckeough Daniel Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/14; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/926; Y10S277/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
A SEAL FOR THE CONNECTION OF A FIRST AND SECOND MEMBER; SAID FIRST AND SECOND MEMBERS HAVING OPPOSING SURFACES; A FIRST EDGE PORTION OF SAID OPPOSING SURFACES OF SAID FIRST AND SECOND MEMBERS BEING AT A PRESSURE HIGHER THAN THE PRESSURE AT A SECOND EDGE PORTION OF SAID OPPOSING SURFACES OF SAID FIRST AND SECOND SURFACES; SAID SEAL INCLUDING A FIRST AND SECOND SPACED RESILIENT MEANS EACH EXTENDING BETWEEN SAID OPPOSING SURFACES AND BEING INTERPOSED BETWEEN SAID FIRST AND SECOND EDGE PORTIONS OF SAID OPPOSING SURFACES; A GAS PASSAGE LOCATED BETWEEN SAID FIRST AND SECOND SPACED RESILIENT MEANS AND COEXTENSIVE WITH SAID FIRST AND SECOND RESILIENT MEANS; GAS PRESSURE SUPPLY MEANS CONNECTED TO SAID GAS PASSAGE TO MAINTAIN SAID GAS PASSAGE AT A PRESSURE SUBSTANTIALLY EQUAL TO SAID HIGHER PRESSURE AT SAID FIRST EDGE PORTION; VALVE MEANS INTERPOSED BETWEEN SAID GAS PRESSURE SUPPLY MEANS AND SAID GAS PASSAGE; AND DIFFERENTIAL PRESSURE RESPONSIVE MEANS CONNECTED BETWEEN THE PRESSURE AT SAID FIRST EDGE PORTION OF SAID OPPOSING SURFACES AND THE PRESSURE OF SAID GAS PASSAGE; SAID DIFFERENTIAL PRESSURE RESPONSIVE MEANS BEING CONNECTED TO SAID VALVE MEANS AND OPENING SAID VALVE MEANS TO CONNECT SAID GAS PRESSURE SUPPLY MEANS TO SAID GAS PASSAGE ONLY WHEN THE PRESSURE OF SAID GAS PASSAGE IS BELOW A PREDETERMINED VALVE WITH RESPECT TO SAID PRESSURE AT SAID FIRST EDGE PORTION.
Claim 2
Dependent Claim
223 words
A SEAL FOR THE CONNECTION OF A FIRST AND SECOND MEMBER; SAID FIRST AND SECOND MEMBERS HAVING OPPOSING SURFACES; A FIRST EDGE PORTION OF SAID OPPOSING SURFACES OF SAID FIRST AND SECOND MEMBERS BEING AT A PRESSURE HIGHER THAN THE PRESSURE AT A SECOND EDGE PORTION OF SAID OPPOSING SURFACES OF SAID FIRST AND SECOND SURFACES; SAID SEAL INCLUDING A FIRST AND SECOND SPACED RESILIENT MEANS EACH EXTENDING BETWEEN SAID OPPOSING SURFACES AND BEING INTERPOSED BETWEEN SAID FIRST AND SECOND EDGE PORTIONS OF SAID OPPOSING SURFACES; A GAS PASSAGE LOCATED BETWEEN SAID FIRST AND SECOND SPACED RESILIENT MEANS AND COEXTENSIVE WITH SAID FIRST AND SECOND RESILIENT MEANS; GAS PRESSURE SUPPLY MEANS CONNECTED TO SAID GAS PASSAGE TO MAINTAIN SAID GAS PASSAGE AT A PRESSURE SUBSTANTIALLY EQUAL TO SAID HIGHER PRESSURE AT SAID FIRST EDGE PORTION; VALVE MEANS INTERPOSED BETWEEN SAID GAS PRESSURE SUPPLY MEANS AND SAID GAS PASSAGE; AND DIFFERENTIAL PRESSURE RESPONSIVE MEANS CONNECTED BETWEEN THE PRESSURE AT SAID FIRST EDGE PORTION OF SAID OPPOSING SURFACES AND THE PRESSURE OF SAID GAS PASSAGE; SAID DIFFERENTIAL PRESSURE RESPONSIVE MEANS BEING CONNECTED TO SAID VALVE MEANS AND OPENING SAID VALVE MEANS TO CONNECT SAID GAS PRESSURE SUPPLY MEANS TO SAID GAS PASSAGE ONLY WHEN THE PRESSURE OF SAID GAS PASSAGE IS BELOW A PREDETERMINED VALVE WITH RESPECT TO SAID PRESSURE AT SAID FIRST EDGE PORTION.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |