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US3107282A Expired / Lapsed US ⏱️ 0.0 years remaining

Circuit breaker with improved reset means

Assignee: Littelfuse Inc
•
Filing: 1961-02-06
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Granted: 1963-10-15
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Expires: 1981-02-06
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Abstract

No abstract record available.

Inventors

  • 👤 Frank B Desio
  • 👤 John F Marquis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 15:04
CPC Classifications
H; H01; H01H; H01H77/00; H01H77/02; H01H77/04; H01H73/00; H01H73/22; H01H73/30; H01H73/303

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 306 words
A CIRCUIT BRAKER ADAPTED TO INTERRUPT AN ELECTRICAL CIRCUIT UPON AN EXCESS CURRENT FLOW THEREIN COMPRISING, AN ELECTRICAL INSULATING BASE, A FIXED CONTACT MOUNTED ON SAID BASE, A RESILIENT BIMETALLIC SWITCH BLADE MOUNTED ON SAID BASE AND ADAPTEED TO ENGAGE AND DISENGAGE THE FIXED CONTACT, MEANS CONNECTING THE CURRENT FLOW THERETHROUGH, SAID CIRCUIT FOR CONTROLLING THE CURRENT FLOW THERETHROUGH, SAID BLADE NORMALLY RESILIENTLY ENGAGING THE FIXED CONTACT TO CLOSE THE CIRCUIT BUT BEING MOVABLE UPON EXCESS CURRENT FLOW IN THE CIRCUIT TO DISENGAGE THE FIXED CONTACT TO OPEN THE CIRCUIT, AN ACTUATOR GUIDED FOR SHIFTING MOVEMENT ON SAID BASE AND SHIFTABLE BETWEEN "ON" AND "OFF" POSITIONS, SAID SHIFTABLE ACTUATOR INCLUDING END WALLS AND A FACE THEREBETWEEN AND A PAD PORTRUDING FROM THE FACE, A METALLICE MEMBER HAVING A FLAT PART OVERLYING THE FACE OF THE ACTUATOR WITH THE APERTURE CLOSELY FITTING SAID PAD AND A PART ENGAGING AT LEAST ONE END WALL OF THE ACTUATOR TO LOCATE SAID MEMBER RELATIVE TO THE SHIFTABLE ACTUATOR TO PORTION OF SAID METALLIC MEMBER BEING STRUCK OUT THEREFROM TO CONSTITUTE A CANTILEVER LEAF SPRING MEANS FOR ENGAGING A FIXED PART ASSOCIATED WITH THE BASE FOR BIASING THE ACTUATOR TO ITS "OFF" POSITION, A PROJECTION ON THE ACTUACTOR HAVING A FIRST SURFACE FOR ENGAGING AND MAINTAINING THE BLADE OUT OF ENGAGEMENT WITH THE FIXED CONTACT WHEN THE ACTUATOR IS IN ITS "OFF" POSITION, A HANDLE EXTENDING FROM THE PAD ON THE ACTUATOR FOR SHIFTING THE ACTUATOR TO ITS "ON" POSITION AGAINST THE ACTION OF THE SPRING MEANS TO ALLOW THE FREE END OF THE BLADE TO ENGAGE THE FIXED CONTACT, SAID PROJECTION ON THE ACTUATOR HAVING A SECOND SURFACE MERGING WITH THE FIRST SURFACE AND ENGAGING THE BLADE WHEN THE BLADE IS ENGAGING THE FIXED CONTACT FOR MAINTAINING THE ACTUATOR IN ITS "ON" POSITION AGAINST THE ACTION OF THE SPRING MEANS.

References Cited (Backward Citations)

US1575469A Cited
US2520873A Cited
US2488818A Cited
US2487422A Cited
US2743333A Cited
US2993968A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1966-10-14 1967-04-15 1967-10-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-10-14 1971-04-15 1971-10-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-10-14 1975-04-15 1975-10-15 $7700.00 Window Closed / Lapsed

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