Patent US2567377A successfully refreshed from Google Patents.
US3744280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High security locking mechanism
Assignee: United States Department of the Navy
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Filing: 1972-07-28
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Granted: 1973-07-10
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Expires: 1992-07-28
Abstract
Abstract A locking mechanism for securing one or two doors by using a padlock and having means preventing cutting or breaking said padlock. A keeper is attached to a first door element, and a hasp is attached to a second door element and has a shackle guard that prevents a cutting device from engaging a shackle of a padlock connecting the keeper and hasp. A lock guard is attached to the first door element beneath the keeper and protects the case of said padlock.
Inventors
- 👤 W Brown
- 👤 E Gabrielson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:41
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/38; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1063; Y10T292/1064; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/487; Y10T70/493
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A lock mechanism comprising, a locking member having a case and a shackle, a keeper adaptable to be attached to a first door element and having an aperture for receiving said shackle of said locking member, a hasp adaptable to be attached to a second door element and having an aperture for receiving said shackle of said locking member, a shackle guard attached to the top edge of said hasp for preventing access by a cutting element to said shackle when said shackle is engaged in the apertures of said keeper and hasp, and a lock guard attached to said first door element and having an aperture for receiving said case of said locking member when said shackle is engaged in said apertures of said keeper and said hasp.
Claim 2
Dependent Claim
129 words
A lock mechanism comprising, a locking member having a case and a shackle, a keeper adaptable to be attached to a first door element and having an aperture for receiving said shackle of said locking member, a hasp adaptable to be attached to a second door element and having an aperture for receiving said shackle of said locking member, a shackle guard attached to the top edge of said hasp for preventing access by a cutting element to said shackle when said shackle is engaged in the apertures of said keeper and hasp, and a lock guard attached to said first door element and having an aperture for receiving said case of said locking member when said shackle is engaged in said apertures of said keeper and said hasp.
Claim 3
Dependent Claim
65 words
A lock mechanism as set forth in claim 1 wherein said keeper and hasp are each L-shaped and each have a flat portion adaptable for attaching to a door element and an outwardly extending flange having an aperture therein, said aperture in said hasp being in alignment with said aperture in said keeper whenever said first and second door elements are in a closed relationship.
Claim 4
Dependent Claim
36 words
A lock mechanism as set forth in claim 1 wherein said lock guard is L-shaped and has a flat portion adaptable for attaching to a door element and an outwardly extending flange having an aperture therein.
Claim 5
Dependent Claim
17 words
A lock mechanism as set forth in claim 1 wherein said locking member is a key-operated padlock.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |