US3235302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic catch
Assignee: National Manufacturing Co
•
Filing: 1963-12-02
•
Granted: 1966-02-15
•
Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Keith W Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/16; H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/206; H01F2007/208; Y; Y10; Y10T; Y10T292/00; Y10T292/11
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
A MAGNETIC LATCH FOR USE WITH A FLAT ARMATURE FORMED OF A MAGNETIC MATERIAL, COMPRISING A NONMAGNETIC HOUSING HAVING AT LEAST ONE OPENING THEREIN, A MAGNETIC ASSEMBLY DISPOSED IN SAID HOUSING WITH A PORTION THEREOF PROTRUDING THROUGH SAID OPENING, SAID ASSEMBLY COMPRISING A RECTANGULARLY SHAPED MAGNET AND A PAIR OF RECTANGULAR POLE PIECES POSITIONED ON OPPOSITE SIDES OF SAID MAGNET, SAID POLE PIECES EACH HAVING A PAIR OF PROTRUSIONS EXTENDING INTO GROOVES IN THE OPPOSITE FACES OF SAID MAGNET, SAID GROOVES EXTENDING PARALLEL TO AN EDGE OF AND THROUGH SAID MAGNET, AND INTEGRAL PORTIONS OF SAID HOUSING EXTENDING INTO ALIGNED APERTURES IN SAID POLE PIECED TO PIVOTALLY SECURE SAID MAGNET ASSEMBLY IN SAID HOUSING.
References Cited (Backward Citations)
US2572514A
Cited
US2627097A
Cited
US2641793A
Cited
US2792249A
Cited
US2990210A
Cited
US2861831A
Cited
US3016563A
Cited
US3151902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |