US3288964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring trip multi-phase overload relay having a u-shaped bimetal with a pivot pin at its web portion
Assignee: ITE Circuit Breaker Co
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Filing: 1965-06-01
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Granted: 1966-11-29
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 John B Cataldo
- 👤 Elwood T Platz
- 👤 Frank W Kussy
- 👤 Marco Bernard Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:42
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/16; H01H71/1009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN OVERLOAD PROTECTIVE DEVICE INCLUDING AN ELECTRIC HEATER, A GENERALLY U-SHAPED BIMETAL ELEMENT HAVING SPACED ARMS CONNECTED BY A WEB PORITON, SAID BIMETAL ELEMENT MOUNTED IN SPACED RELATION WITH RESPECT TO SAID HEATER AND IN CLOSE PROXIMITY THERETO SO THAT HEAT GENERATED BY CURRENT FLOW THROUGH SAID HEATER HEATS SAID BIMETAL ELEMENT CAUSING SAID ARMS TO DIVERGE, PIN MEANS PIVOTALLY MOUNTING SAID BIMETAL ELEMENT AT SAID WEB PORTION, CALIBRATING MEANS ENGAGEABLE WITH ONE OF SAID ARMS, OVERCENTER MEANS, THE OTHER OF SAID ARMS, UPON PREDETERMINED DEFLECTION THEREOF ENGAGING AND THEREBY ACTUATING SAID OVERCENTER MEANS, AND CONTACT MEANS OPERABLE BY SAID OVERCENTER MEANS UPON ACTUATION THEREOF.
Claim 2
Dependent Claim
105 words
AN OVERLOAD PROTECTIVE DEVICE INCLUDING AN ELECTRIC HEATER, A GENERALLY U-SHAPED BIMETAL ELEMENT HAVING SPACED ARMS CONNECTED BY A WEB PORITON, SAID BIMETAL ELEMENT MOUNTED IN SPACED RELATION WITH RESPECT TO SAID HEATER AND IN CLOSE PROXIMITY THERETO SO THAT HEAT GENERATED BY CURRENT FLOW THROUGH SAID HEATER HEATS SAID BIMETAL ELEMENT CAUSING SAID ARMS TO DIVERGE, PIN MEANS PIVOTALLY MOUNTING SAID BIMETAL ELEMENT AT SAID WEB PORTION, CALIBRATING MEANS ENGAGEABLE WITH ONE OF SAID ARMS, OVERCENTER MEANS, THE OTHER OF SAID ARMS, UPON PREDETERMINED DEFLECTION THEREOF ENGAGING AND THEREBY ACTUATING SAID OVERCENTER MEANS, AND CONTACT MEANS OPERABLE BY SAID OVERCENTER MEANS UPON ACTUATION THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |