Patent US3249708A successfully refreshed from Google Patents.
US3249708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking means for electric switches
Assignee: Arrow Hart and Hegeman Electric Co
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Filing: 1964-08-05
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Granted: 1966-05-03
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Expires: 1984-08-05
Abstract
No abstract record available.
Inventors
- 👤 David W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:55
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/20; H01H9/22; H01H9/226; H01H13/00; H01H13/50; H01H13/56; H01H13/60; Y; Y10; Y10S; Y10S55/00; Y10S55/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
AN ELECTRIC SNAP WHICH COMPRISING A CASING, OVERCENTER SNAP-ACTION MECHANISM IN SAID CASING, SWITCH CONTACT MEANS IN SAID CASING OPERATED BETWEEN TWO POSITIONS BY SAID MECHANISM, A MANUAL OPERATING MEMBER FOR SAID MECHANISM, A SLIDABLE LOCKING BAR MOUNTED FOR SLIDABLE MOVEMENT ACROSS THE TOP OF SAID CASING SAID SLIDABLE, WITH SAID MECHANISM TO MOVE IT FROM ONE POSITION TO ANOTHER INDEPENDENT OF AND WITHOUT MOVING SAID MANUAL OPERATING MEMBER, SAID LOCKING BAR IN ONE POSITION ENGAGING SAID MECHANISM AND LOCKING IT AGAINST MOVEMENT BETWEEN IT TWO POSITIONS.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |