Patent US3081616A successfully refreshed from Google Patents.
US3081616A
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Safety lock
Assignee: DOCK AND DOCK
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Filing: 1960-12-21
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Granted: 1963-03-19
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Expires: 1980-12-21
Abstract
No abstract record available.
Inventors
- 👤 Albert E Mintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:58
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/36; E05C17/365; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/283; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5164
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
A SAFETY LOCK COMPRISING A CHAIN WITH MEANS FOR ATTACHMENT TO THE INSIDE OF A DOOR, A PADLOCK RELEASABLY CONNECTED TO SAID CHAIN, A DOOR FRAME MOUNTED CASING HAVING AN OPENING THEREIN FOR RECEIVING THE BODY OF SAID PADLOCK IN INVERTED POSITION, SAID OPENING BEING SLIGHTLY SLANTED TO POSITION SAID PADLOCK NON-VERTICAL, MEANS RETAINING SAID PADLOCK IN SAID OPENING, SAID CHAIN BEING OF SUCH LENGTH AS TO PERMIT THE DOOR TO BE PARTIALLY OPENED TO PERMIT INSERTION FROM OUTSIDE THE DOOR OF AN UNLOCKING MEANS INTO SAID PADLOCK TO FREE SAID CHAIN FROM THE LOOP OF SAID PADLOCK WHEN SAID DOOR, CHAIN, PADLOCK AND CASING ARE CONNECTED.
References Cited (Backward Citations)
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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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |