Patent US3169180A successfully refreshed from Google Patents.
US3169180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot wire thermal trip overload electric device
Assignee: Associated Electrical Industries Ltd
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Filing: 1961-09-12
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Granted: 1965-02-09
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Expires: 1981-09-12
Abstract
No abstract record available.
Inventors
- 👤 Chafer Henry James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:47
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A THERMAL OVERLOAD RELAY INCLUDING A BASE, A MEMBER SUPPORTED ON SAID BASE FOR ROTATIONAL MOVEMENT RELATIVE THERETO WHICH IS CONSTITUTED OVER AT LEAST PART OF ITS LENGTH BY AT LEST TWO SEPARATE METALLIC PORTIONS HAVING DIFFERENT THERMAL EXPANSION CHARACTERISTICS, A TRIPPING DEVICE ADAPTED TO BE ACTUATED BY SAID MEMBER, RESILIENT MEANS TO BIAS THE MEMBER FOR ANGULAR MOVEMENT IN A DIRECTION SUCH AS TO CAUSE SAID TRIPPING DEVICE TO BE ACTUATED, AT LEAST ONE ELECTRICAL CONDUCTOR OF SMALL THERMAL MASS SECURED TO SAID MEMBER ADJACENT THE FREE END THERE-
Claim 2
Dependent Claim
90 words
A THERMAL OVERLOAD RELAY INCLUDING A BASE, A MEMBER SUPPORTED ON SAID BASE FOR ROTATIONAL MOVEMENT RELATIVE THERETO WHICH IS CONSTITUTED OVER AT LEAST PART OF ITS LENGTH BY AT LEST TWO SEPARATE METALLIC PORTIONS HAVING DIFFERENT THERMAL EXPANSION CHARACTERISTICS, A TRIPPING DEVICE ADAPTED TO BE ACTUATED BY SAID MEMBER, RESILIENT MEANS TO BIAS THE MEMBER FOR ANGULAR MOVEMENT IN A DIRECTION SUCH AS TO CAUSE SAID TRIPPING DEVICE TO BE ACTUATED, AT LEAST ONE ELECTRICAL CONDUCTOR OF SMALL THERMAL MASS SECURED TO SAID MEMBER ADJACENT THE FREE END THERE-
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |