US3352446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure apparatus for pressure chamber
Assignee: Wilmot Castle Co
•
Filing: 1965-06-09
•
Granted: 1967-11-14
•
Expires: 1985-06-09
Abstract
No abstract record available.
Inventors
- 👤 Edgar L Anderson
- 👤 Norman E Lanterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; F16J13/00; F16J13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IMPROVED APPARATUS FOR COMBINATION WITH A PRESSURE VESSEL MEMBER HAVING AN OPENING AND A DOOR MEMBER FOR CLOSURE OF SAID OPENING, SAID IMPROVEMENT COMPRISING IN COMBINATION THEREWITH: (A) MEANS BETWEEN SAID MEMBERS ADAPTED FOR SUPPORTING DOOR MEMBER FOR MOVEMENT BETWEEN OPEN AND CLOSED POSITIONS WITH SAID OPENING, (B) INFLATABLE SEAL MEANS BETWEEN SAID MEMBERS AROUND SAID OPENING WHEN IN SAID CLOSED PORTIONS, AND (C) MEANS BETWEEN SAID MEMBERS INCLUDING A SHOULDER ON AT LEAST SAID DOOR MEMBER RESPONSIVE TO MOVEMENT OF SAID DOOR MEMBER TO SAID CLOSED POSITION INFLATING AT LEAST A PORTION OF SAID SEAL INTO SEALING RE-
Claim 2
Dependent Claim
99 words
IMPROVED APPARATUS FOR COMBINATION WITH A PRESSURE VESSEL MEMBER HAVING AN OPENING AND A DOOR MEMBER FOR CLOSURE OF SAID OPENING, SAID IMPROVEMENT COMPRISING IN COMBINATION THEREWITH: (A) MEANS BETWEEN SAID MEMBERS ADAPTED FOR SUPPORTING DOOR MEMBER FOR MOVEMENT BETWEEN OPEN AND CLOSED POSITIONS WITH SAID OPENING, (B) INFLATABLE SEAL MEANS BETWEEN SAID MEMBERS AROUND SAID OPENING WHEN IN SAID CLOSED PORTIONS, AND (C) MEANS BETWEEN SAID MEMBERS INCLUDING A SHOULDER ON AT LEAST SAID DOOR MEMBER RESPONSIVE TO MOVEMENT OF SAID DOOR MEMBER TO SAID CLOSED POSITION INFLATING AT LEAST A PORTION OF SAID SEAL INTO SEALING RE-
References Cited (Backward Citations)
US647379A
Cited
US2088909A
Cited
US2330220A
Cited
US2527084A
Cited
US2697534A
Cited
US2785824A
Cited
US3100918A
Cited
US3198159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |