US3249713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic switch control sensor
Assignee: Symington Wayne Corp
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Filing: 1961-07-27
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Granted: 1966-05-03
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Expires: 1981-07-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:40
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/08; B67D7/22; B67D7/221; B67D7/222; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/484; H; H01; H01H; H01H35/00; H01H35/06; H01H35/10; H01H36/00; H01H36/0006; H01H36/0053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A SHAFT ROTATION SENSOR COMPRISING IN COMBINATION, A SET OF MAGNETICALLY ACTUATED SWITCH CONTACTS; A MAGNET; A ROTATABLE SHAFT; MEANS COUPLED TO SAID SHAFT FOR DRIVING SAID MAGNET THROUGH AN ARCUATE PATH ABOUT SAID SHAFT EXTENDING LESS THAN 360*; MEANS PERMITTING SAID MAGNET TO BE CARRIED THROUGH THE BALANCE OF SAID 360* PATH ABOUT SAID SHAFT FREE OF SAID COUPLING MEANS UTILIZING THE FORCE OF GRAVITY; SAID SWITCH CONTACTS BEING ACTIVATED ONLY WHEN SAID MAGNET IS WITHIN A DELINEATED ZONE OF ITS ARCUATE PATH OF TRAVEL.
Claim 2
Dependent Claim
86 words
A SHAFT ROTATION SENSOR COMPRISING IN COMBINATION, A SET OF MAGNETICALLY ACTUATED SWITCH CONTACTS; A MAGNET; A ROTATABLE SHAFT; MEANS COUPLED TO SAID SHAFT FOR DRIVING SAID MAGNET THROUGH AN ARCUATE PATH ABOUT SAID SHAFT EXTENDING LESS THAN 360*; MEANS PERMITTING SAID MAGNET TO BE CARRIED THROUGH THE BALANCE OF SAID 360* PATH ABOUT SAID SHAFT FREE OF SAID COUPLING MEANS UTILIZING THE FORCE OF GRAVITY; SAID SWITCH CONTACTS BEING ACTIVATED ONLY WHEN SAID MAGNET IS WITHIN A DELINEATED ZONE OF ITS ARCUATE PATH OF TRAVEL.
References Cited (Backward Citations)
US1874199A
Cited
US2908778A
Cited
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 |