Patent US3705407A successfully refreshed from Google Patents.
Patent US3352585A successfully refreshed from Google Patents.
US3352585A
Expired / Lapsed
US
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Door lock with safety device
Assignee: Overhead Door Corp
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Filing: 1965-08-02
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Granted: 1967-11-14
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Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Flay D Crosswell
- 👤 John W Binns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:44
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0042; E05B65/0053; E05B65/08; E05B65/0811; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0908; Y10T292/0911; Y10T292/0913; Y10T292/0914; Y10T292/0917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A LIFE SAVING DOOR LOCKING DEVICE WHICH ENABLES AN INDIVIDUAL TO RAPIDLY OPEN A DOOR FROM THE SIDE OPPOSITE TO ITS LOCKED SIDE, SAID DEVICE COMPRISING A RETAINER PLATE FIXEDLY MOUNTED ON THE LOCKED SIDE OF SAID DOOR, A LOCK PLATE NORMALLY PARTIALLY ENGAGED BY SAID RETAINER PLATE, A LOCKING MEANS MOUNTED ON SAID LOCK PLATE FOR LOCKING SAID DOOR IN A CLOSED POSITION, MEANS MOVABLY CARRIED BY SAID DOOR FOR NORMALLY ENGAGING SAID LOCK PLATE AND MEANS ACCESSIBLE ONLY FROM SAID OPPOSITE SIDE FOR DISENGAGING SAID ENGAGING MEANS FROM SAID LOCK PLATE WHEREBY SAID DOOR MAY BE MOVED TO THE OPEN POSITION FROM SAID OPPOSITE SIDE WITHOUT UNLOCKING SAID LOCKING MEANS.
Claim 2
Dependent Claim
112 words
A LIFE SAVING DOOR LOCKING DEVICE WHICH ENABLES AN INDIVIDUAL TO RAPIDLY OPEN A DOOR FROM THE SIDE OPPOSITE TO ITS LOCKED SIDE, SAID DEVICE COMPRISING A RETAINER PLATE FIXEDLY MOUNTED ON THE LOCKED SIDE OF SAID DOOR, A LOCK PLATE NORMALLY PARTIALLY ENGAGED BY SAID RETAINER PLATE, A LOCKING MEANS MOUNTED ON SAID LOCK PLATE FOR LOCKING SAID DOOR IN A CLOSED POSITION, MEANS MOVABLY CARRIED BY SAID DOOR FOR NORMALLY ENGAGING SAID LOCK PLATE AND MEANS ACCESSIBLE ONLY FROM SAID OPPOSITE SIDE FOR DISENGAGING SAID ENGAGING MEANS FROM SAID LOCK PLATE WHEREBY SAID DOOR MAY BE MOVED TO THE OPEN POSITION FROM SAID OPPOSITE SIDE WITHOUT UNLOCKING SAID LOCKING MEANS.
References Cited (Backward Citations)
US901470A
Cited
US2079167A
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US2250447A
Cited
US2340470A
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US2618498A
Cited
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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) | 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 |