US3088548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed hoist-shaft door
Assignee: Willy H Schlicker K G
•
Filing: 1961-09-19
•
Granted: 1963-05-07
•
Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Behrens Albert
- 👤 Kolzow Karl-Heinz
- 👤 Brandt Peter Markus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:56
CPC Classifications
E; E05; E05C; E05C9/00; E05C9/06; E05C9/10; E05C9/16; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0834; Y10T292/0836; Y10T292/0839; Y10T292/0848; Y10T292/0849; Y10T292/0856; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5496
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A HERMETICALLY SEALABLE HOIST-SHAFT DOOR, COMPRISING A FRAME STRUCTURE, A DOOR STRUCTURE HINGED TO SAID FRAME STRUCTURE, ONE OF SAID STRUCTURES HAVING A PACKING EXTENDING AROUND SAID DOOR STRUCTURE AND SEALINGLY ENGAGEABLE BY THE OTHER STRUCTURE WHEN THE DOOR IS TIGHTLY CLOSED, A PLURALITY OF LOCKING ELEMENTS MOUNTED ON SAID DOOR STRUCTURE ON THE INNER SIDE THEREOF AND HAVING EACH A LATCH END, WEDGING TRACKS MOUNTED ON SAID FRAME STRUCTURE, SAID LATCH ENDS BEING SIMULTANEOUSLY ENGAGEABLE WITH AND DISENGAGEABLE FROM SAID RESPECTIVE WEDGING TRACKS, A PIVOT PIN REVOLVABLY MOUNTED IN SAID DOOR STRUCTURE IN GAS-TIGHTLY SEALED RELATION THERETO AND HAVING RESPECTIVE ENDS INSIDE AND OUTSIDE SAID DOOR STRUCTURE, AN OPERATING LEVER RIGIDLY MOUNTED ON THE OUTER END OF SAID PIVOT PIN, A CONTROL MEMBER ROTATABLY SEATED ON THE INNER END OF SAID PIVOT PIN AND CONNECTED WITH SAID LOCKING ELEMENTS FOR SIMULTANEOUSLY MOVING SAID LATCH ENDS BY ROTATION OF SAID CONTROL MEMBER, A COUPLING MECHANISM HAVING AN ARM FIXED ON THE INNER END OF SAID PIVOT PIN FOR ROTATION TOGETHER THEREWITH, SAID COUPLING MECHANISM HAVING COUPLING
Claim 2
Dependent Claim
176 words
A HERMETICALLY SEALABLE HOIST-SHAFT DOOR, COMPRISING A FRAME STRUCTURE, A DOOR STRUCTURE HINGED TO SAID FRAME STRUCTURE, ONE OF SAID STRUCTURES HAVING A PACKING EXTENDING AROUND SAID DOOR STRUCTURE AND SEALINGLY ENGAGEABLE BY THE OTHER STRUCTURE WHEN THE DOOR IS TIGHTLY CLOSED, A PLURALITY OF LOCKING ELEMENTS MOUNTED ON SAID DOOR STRUCTURE ON THE INNER SIDE THEREOF AND HAVING EACH A LATCH END, WEDGING TRACKS MOUNTED ON SAID FRAME STRUCTURE, SAID LATCH ENDS BEING SIMULTANEOUSLY ENGAGEABLE WITH AND DISENGAGEABLE FROM SAID RESPECTIVE WEDGING TRACKS, A PIVOT PIN REVOLVABLY MOUNTED IN SAID DOOR STRUCTURE IN GAS-TIGHTLY SEALED RELATION THERETO AND HAVING RESPECTIVE ENDS INSIDE AND OUTSIDE SAID DOOR STRUCTURE, AN OPERATING LEVER RIGIDLY MOUNTED ON THE OUTER END OF SAID PIVOT PIN, A CONTROL MEMBER ROTATABLY SEATED ON THE INNER END OF SAID PIVOT PIN AND CONNECTED WITH SAID LOCKING ELEMENTS FOR SIMULTANEOUSLY MOVING SAID LATCH ENDS BY ROTATION OF SAID CONTROL MEMBER, A COUPLING MECHANISM HAVING AN ARM FIXED ON THE INNER END OF SAID PIVOT PIN FOR ROTATION TOGETHER THEREWITH, SAID COUPLING MECHANISM HAVING COUPLING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |