US3149868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic catch
Assignee: Ajax Hardware Manufacturing Corp
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Filing: 1961-07-21
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Granted: 1964-09-22
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Expires: 1981-07-21
Abstract
No abstract record available.
Inventors
- 👤 Norman D Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/16; Y; Y10; Y10T; Y10T292/00; Y10T292/11
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
A MAGNETIC CATCH COMPRISING: A PAIR OF POLE PIECES; A MAGNET DISPOSED BETWEEN SAID POLE PIECES; AND A NONMAGNETIC HOUSING FOR SAID MAGNET, PORTIONS OF SAID POLE PIECES EXTENDING OUT OF SAID HOUSING FOR ENGAGEMENT WITH A MAGNETIC STRIKE, SAID HOUSING INCLUDING MEANS IN ENGAGEMENT WITH SAID MAGNET AND PREVENTING MOVEMENT OF SAID MAGNET OUTWARDLY OF SAID HOUSING, SAID MAGNET AND SAID POLE PIECES HAVING MUTUAL ENGAGING MEANS RETAINING SAID POLE PIECES IN SAID HOUSING AND PERMITTING PIVOTAL MOVEMENT OF SAID POLE PIECES WHEREBY SAID PORTIONS OF SAID POLE PIECES MAY PROPERLY ENGAGE A MAGNETIC STRIKE, THE CLEARANCE BETWEEN SAID MUTUAL ENGAGING MEANS BEING SUFFICIENT TO PERMIT LIMITED MOVEMENT OF SAID POLE PIECES RADIALLY OF THE PIVOTAL AXIS OF SAID POLE PIECES WHEREBY SAID PORTIONS OF SAID POLE PIECES ARE MOVABLE TO A LIMITED EXTENT INTO AND OUT OF SAID HOUSING.
References Cited (Backward Citations)
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |