US3127486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch having object sensing operating means
Assignee: Siegler Corp
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Filing: 1961-03-06
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Granted: 1964-03-31
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Expires: 1981-03-06
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Blumenshine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/02; H; H01; H01H; H01H35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
APPARATUS FOR SENSING THE PRESENCE OF FROST ON A SURFACE OF A COMPONENT, THE APPARATUS COMPRISING A MOVABLE ARM HAVING A SENSING PORTION DISPOSED ADJACENT THE SURFACE, YIELDABLE MEANS URGING THE SENSING PORTION OF THE ARM AWAY FROM THE SURFACE, A SWITCH HAVING A CONTROL PLUNGER FOR OPERATING IT, THE SWITCH HAVING MECHANICAL HYSTERESIS SO THE PLUNGER CHANGES THE SWITCH FROM A FIRST TO A SECOND STATE WHEN THE PLUNGER IS IN ONE POSITION AND CHANGES THE SWITCH BACK FROM THE SECOND TO THE FIRST STATE WHEN THE PLUNGER IS IN A DIFFERENT POSITION, THE PLUNGER BEING DISPOSED TO ENGAGE THE ARM, MEANS FOR MOVING THE SWITCH TOWARD THE SURFACE SO THE PLUNGER ENGAGES THE ARM AND OVERCOMES THE YIELDABLE MEANS TO MOVE THE SENSING PORTION OF THE ARM TOWARD THE SURFACE, AND MEANS FOR MOVING THE SWITCH AND PLUNGER AWAY FROM THE SURFACE SO THE SENSING PORTION OF THE ARM IS URGED AWAY FROM THE SURFACE.
Claim 2
Dependent Claim
157 words
APPARATUS FOR SENSING THE PRESENCE OF FROST ON A SURFACE OF A COMPONENT, THE APPARATUS COMPRISING A MOVABLE ARM HAVING A SENSING PORTION DISPOSED ADJACENT THE SURFACE, YIELDABLE MEANS URGING THE SENSING PORTION OF THE ARM AWAY FROM THE SURFACE, A SWITCH HAVING A CONTROL PLUNGER FOR OPERATING IT, THE SWITCH HAVING MECHANICAL HYSTERESIS SO THE PLUNGER CHANGES THE SWITCH FROM A FIRST TO A SECOND STATE WHEN THE PLUNGER IS IN ONE POSITION AND CHANGES THE SWITCH BACK FROM THE SECOND TO THE FIRST STATE WHEN THE PLUNGER IS IN A DIFFERENT POSITION, THE PLUNGER BEING DISPOSED TO ENGAGE THE ARM, MEANS FOR MOVING THE SWITCH TOWARD THE SURFACE SO THE PLUNGER ENGAGES THE ARM AND OVERCOMES THE YIELDABLE MEANS TO MOVE THE SENSING PORTION OF THE ARM TOWARD THE SURFACE, AND MEANS FOR MOVING THE SWITCH AND PLUNGER AWAY FROM THE SURFACE SO THE SENSING PORTION OF THE ARM IS URGED AWAY FROM THE SURFACE.
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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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |