Patent US3174012A successfully refreshed from Google Patents.
US3174012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane snap action device having movable heater means for voltage and temperature compensation
Assignee: Tung Sol Electric Inc
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Filing: 1961-06-15
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Granted: 1965-03-16
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Expires: 1981-06-15
Abstract
No abstract record available.
Inventors
- 👤 Hemming G Siiberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:12
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/06; H01H61/066; H01H37/00; H01H37/02; H01H37/10; H01H37/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A SNAP ACTION DEVICE OPERABLE AT SUBSTANTIALLY CONSTANT RATES, REGARDLESS OF CHANGE IN POTENTIAL OF THE CIRCUIT ENERGIZING THE DEVICE OR IN AMBIENT TEMPERATURE COMPRISING A VANE OF RESILIENT METAL HAVING AN INHERENT DEFORMATION THEREIN, A THERMALLY EXPANSIBLE PULL RIBBON SECURED TO THE VANE UNDER TENSION AND WHEN COLD HOLDING THE SAME IN A CONSTRAINED POSITION, MEANS FOR SUPPORTING THE VANE, A HEATER ELEMENT COMPRISING A CONDUCTIVE RIBBON POSITIONED NEAR THE PULL RIBBON AND PARALLEL THERETO, BIMETALLIC SUPPORTS FOR SAID HEATER, SAID BIMETALLIC SUPPORTS HAVING OPPOSITE SIDES OF MATERIALS OF HIGH AND LOW COEFFICIENTS OF EXPANSION, THE SIDES OF MATERIAL OF HIGHER COEFFICIENTS OF EXPANSION FACING SAID PULL RIBBON, WHEREBY THE HEATER WILL MOVE AWAY FROM THE PULL RIBBON WITH INCREASE IN TEMPERATURE, AND MEANS FOR SUPPLYING CURRENT TO SAID BIMETALLIC SUPPORTS AND SAID HEATER ELEMENT.
Claim 2
Dependent Claim
136 words
A SNAP ACTION DEVICE OPERABLE AT SUBSTANTIALLY CONSTANT RATES, REGARDLESS OF CHANGE IN POTENTIAL OF THE CIRCUIT ENERGIZING THE DEVICE OR IN AMBIENT TEMPERATURE COMPRISING A VANE OF RESILIENT METAL HAVING AN INHERENT DEFORMATION THEREIN, A THERMALLY EXPANSIBLE PULL RIBBON SECURED TO THE VANE UNDER TENSION AND WHEN COLD HOLDING THE SAME IN A CONSTRAINED POSITION, MEANS FOR SUPPORTING THE VANE, A HEATER ELEMENT COMPRISING A CONDUCTIVE RIBBON POSITIONED NEAR THE PULL RIBBON AND PARALLEL THERETO, BIMETALLIC SUPPORTS FOR SAID HEATER, SAID BIMETALLIC SUPPORTS HAVING OPPOSITE SIDES OF MATERIALS OF HIGH AND LOW COEFFICIENTS OF EXPANSION, THE SIDES OF MATERIAL OF HIGHER COEFFICIENTS OF EXPANSION FACING SAID PULL RIBBON, WHEREBY THE HEATER WILL MOVE AWAY FROM THE PULL RIBBON WITH INCREASE IN TEMPERATURE, AND MEANS FOR SUPPLYING CURRENT TO SAID BIMETALLIC SUPPORTS AND SAID HEATER ELEMENT.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |