Patent US3172825A successfully refreshed from Google Patents.
US3172825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triple-seal oven door sealing means
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/16; F; F16; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/025
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
143 words
SEALING MEANS BETWEEN A COKE OVEN DOOR AND A COKE OVEN DOOR FRAME COMPRISING: (A) A FIRST PERIPHERAL SEALING MEMBER FIXED TO SAID DOOR INCLUDING A PAIR OF SPACED RESILIENT WALLS PROJECTING READWARDLY THEREFROM AND FORMING A NARROW SLOT THEREBETWEEN: AND (B) A SECOND PERIPHERAL SEALING CHAMBER MEMBER FIXED TO SAID DOOR FRAME INCLUDING A PAIR OF SPACED RESILIENT WALLS PROJECTING FORWARDLY THEREFROM AND FORMING A SECOND NARROW SLOT THEREBETWEEN, (C) ONE OF THE WALLS OF SAID FIRST SEALING MEMBER EXTENDING INTO THE SECOND SLOT AND WEDGING BETWEEN THE WALLS OF SAID SECOND SEALING MEMBER WITH THE OTHER WALL OF SAID FIRST SEALING MEMBER COACTING WITH ONE OF THE WALLS OF SAID SECOND SEALING MEMBER WHEREBY, WHEN SAID DOOR IS PLACE IN OPERATIVE JUXTAPOSITION TO SAID DOOR FRAME, SAID FIRST AND SECOND SEALING MEMBERS COACT ALONG AT LEAST THREE CONTINUOUS PERIPHERAL SEALING SURFACES.
References Cited (Backward Citations)
US1873076A
Cited
US2107762A
Cited
US2330728A
Cited
US2662053A
Cited
US2744858A
Cited
US2993845A
Cited
US3133513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |