Patent US2364437A successfully refreshed from Google Patents.
Patent US3174013A successfully refreshed from Google Patents.
US3174013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable thermo-responsive device
Assignee: Tung Sol Electric Inc
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Filing: 1961-08-25
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Granted: 1965-03-16
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Expires: 1981-08-25
Abstract
No abstract record available.
Inventors
- 👤 Hemming G Suberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:38
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/06; H01H61/066; H01H37/00; H01H37/02; H01H37/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
A SNAP ACTION DEVICE COMPRISING A VANE OF ELECTRICALLY CONDUCTING RESILIENT MATERIAL HAVING DEFORMATIONS THEREIN TENDING TO CAUSE PARTS OF THE SURFACE THEREOF TO CURVE OPPOSITELY ABOUT PARALLEL AXES EXTENDING TOWARDS THE EDGE OF THE VANE FROM THE CENTRAL PORTION OF THE VANE, A PAIR OF HEAT EXPANSIBLE CONDUCTIVE PULL MEANS ONE ON EACH SIDE OF THE VANE SECURED UNDER TENSION TO OPPOSITE EDGES OF THE VANE FOR EXERTING FORCE ALONG SAID PARALLEL AXES, TO BOW THE VANE OPPOSITELY ABOUT AN AXIS TRANSVERSE TO SAID PARALLEL AXES, A PAIR OF FIXED CONTACTS, SUPPORT MEANS FOR SAID VANE AND FIXED CONTACTS, A CONTACT CARRIED BY SAID VANE AND POSITIONED FOR ENGAGEMENT WITH ONE OF SAID FIXED CONTACTS WHEN THE VANE IS ONE STABLE POSITION, A SECOND CONTACT CARRIED BY SAID VANE AND POSITIONED FOR ENGAGEMENT WITH THE OTHER OF SAID FIXED CONTACTS WHEN
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 |