Patent US2800435A successfully refreshed from Google Patents.
US2800435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coke oven door closure apparatus
Assignee: Beazer East Inc
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Filing: 1956-07-06
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Granted: 1957-07-23
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Expires: 1976-07-06
Abstract
No abstract record available.
Inventors
- 👤 Paul J Homan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/08; C10B25/14; C10B25/12; Y; Y10; Y10T; Y10T292/00; Y10T292/37; Y10T292/379
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
COKE OVEN DOOR CLOSURE APPARATUS FOR A HORIZONTAL COKE OVEN CHAMBER WITH DOORWAY AT ONE END OF THE CHAMBER AND A SEALING SURFACE AROUND THE MARGIN OF THE DOORWAY, COMPRISING A DOOR WITH A MARGINAL SEALING MEMBER EXTENDING AROUND THE MARGIN OF THE DOOR OR SEALING ENGAGEMENT WITH THE SEALING SURFACE AROUND THE MARGIN OF THE DOORWAY; OPPOSITELY DISPOSED DOOR RETAINER MEANS MOUNTED EXTERIORLY OF THE DOOR ON OPPOSITE SIDES OF THE SAME; A LATCH BAR SPANNNIG THE DOOR BETWEEN THE SAME AND SAID OPPOSITELY DISPOSED DOOR RETAINER MEANS FOR SECURING IN, AND RELEASING THE DOOR FROM, GASTIGHT RELATION BETWEEN ITS MARGINAL SEALING MEMBER AND THE MARGINAL SEALING SURFACE AROUND THE DOORWAY; A TOGGLE LOCK BETWEEN SAID DOOR AND SAID LATCH BAR, SAID TOGGLE LOCK HAVING AN ARM THEREOF PIVOTED TO SAID DOOR AND ANOTHER ARM PIVOTED TO SAID LATCH BAR WITH A PIVOTAL CONNECTION BETWEEN THE ARMS FOR EFFECTING PRESSURE MOVEMENT OF THE DOOR AND LATCH FROM EACH OTHER TO SECURE THEM IN PLACE BY RETAINER MEANS.
Claim 2
Dependent Claim
168 words
COKE OVEN DOOR CLOSURE APPARATUS FOR A HORIZONTAL COKE OVEN CHAMBER WITH DOORWAY AT ONE END OF THE CHAMBER AND A SEALING SURFACE AROUND THE MARGIN OF THE DOORWAY, COMPRISING A DOOR WITH A MARGINAL SEALING MEMBER EXTENDING AROUND THE MARGIN OF THE DOOR OR SEALING ENGAGEMENT WITH THE SEALING SURFACE AROUND THE MARGIN OF THE DOORWAY; OPPOSITELY DISPOSED DOOR RETAINER MEANS MOUNTED EXTERIORLY OF THE DOOR ON OPPOSITE SIDES OF THE SAME; A LATCH BAR SPANNNIG THE DOOR BETWEEN THE SAME AND SAID OPPOSITELY DISPOSED DOOR RETAINER MEANS FOR SECURING IN, AND RELEASING THE DOOR FROM, GASTIGHT RELATION BETWEEN ITS MARGINAL SEALING MEMBER AND THE MARGINAL SEALING SURFACE AROUND THE DOORWAY; A TOGGLE LOCK BETWEEN SAID DOOR AND SAID LATCH BAR, SAID TOGGLE LOCK HAVING AN ARM THEREOF PIVOTED TO SAID DOOR AND ANOTHER ARM PIVOTED TO SAID LATCH BAR WITH A PIVOTAL CONNECTION BETWEEN THE ARMS FOR EFFECTING PRESSURE MOVEMENT OF THE DOOR AND LATCH FROM EACH OTHER TO SECURE THEM IN PLACE BY RETAINER MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |