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US3377448A Expired / Lapsed US ⏱️ 0.0 years remaining

Thermal responsive miniature fuse

Assignee: Littelfuse Inc
•
Filing: 1966-08-22
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Granted: 1968-04-09
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Expires: 1986-08-22
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Abstract

No abstract record available.

Inventors

  • 👤 Bertram W Baumbach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 07:08
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/74; H01H37/76; H01H37/761

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 157 words
A THERMAL PROTECTOR SWITCH UNIT COMPRISING: AN OUTER OPEN-ENDED INSULATING SLEEVE, A PAIR OF HOLLOW TERMINALS OPEN AT THEIR ENDS AND FIXED IN PLACE AT THE OPPOSITE ENDS OF AND INSIDE OF SAID INSULATING SLEEVE IN SPACED APART RELATION, A SOLID FUSIBLE CONDUCTIVE LINK WITHIN SAID INSULATING SLEEVE PHYSICALLY AND ELECTRICALLY CONNECTED BY TELESCOPING INTO THE INNER ENDS OF SAID TERMINALS, SAID CONDUCTIVE LINK MELTING AT A GIVEN TEMPERATURE TO BREAK AN ELECTRICAL CIRCUIT, SAID HOLLOW TERMINALS BEING COVERED BY SAID INSULATING SLEEVE SO THAT THERE ARE NO LONGITUDINALLY EXPOSED CONDUCTIVE SURFACES THEREON, AND SAID HOLLOW TERMINALS DEFINING CONDUCTOR-RECEIVING SOCKETS OPENING ONTO THE ENDS OF THE INSULATING SLEEVE TO RECEIVE THE BARED ENDS OF A PAIR OF CONDUCTORS TO BE ELECTRICALLY CONNECTED BY THE SWITCH UNIT, AND SAID INSULATING SLEEVE BEING INWARDLY DEFORMABLE AND SAID HOLLOW TERMINALS BEING PERMANENTLY CRIMPABLE SNUGLY AROUND THE BARED ENDS OF THE CONDUCTORS FOR FIXEDLY SECURING THE SWITCH UNIT TO THE CONDUCTORS.
Claim 2
Dependent Claim 157 words
A THERMAL PROTECTOR SWITCH UNIT COMPRISING: AN OUTER OPEN-ENDED INSULATING SLEEVE, A PAIR OF HOLLOW TERMINALS OPEN AT THEIR ENDS AND FIXED IN PLACE AT THE OPPOSITE ENDS OF AND INSIDE OF SAID INSULATING SLEEVE IN SPACED APART RELATION, A SOLID FUSIBLE CONDUCTIVE LINK WITHIN SAID INSULATING SLEEVE PHYSICALLY AND ELECTRICALLY CONNECTED BY TELESCOPING INTO THE INNER ENDS OF SAID TERMINALS, SAID CONDUCTIVE LINK MELTING AT A GIVEN TEMPERATURE TO BREAK AN ELECTRICAL CIRCUIT, SAID HOLLOW TERMINALS BEING COVERED BY SAID INSULATING SLEEVE SO THAT THERE ARE NO LONGITUDINALLY EXPOSED CONDUCTIVE SURFACES THEREON, AND SAID HOLLOW TERMINALS DEFINING CONDUCTOR-RECEIVING SOCKETS OPENING ONTO THE ENDS OF THE INSULATING SLEEVE TO RECEIVE THE BARED ENDS OF A PAIR OF CONDUCTORS TO BE ELECTRICALLY CONNECTED BY THE SWITCH UNIT, AND SAID INSULATING SLEEVE BEING INWARDLY DEFORMABLE AND SAID HOLLOW TERMINALS BEING PERMANENTLY CRIMPABLE SNUGLY AROUND THE BARED ENDS OF THE CONDUCTORS FOR FIXEDLY SECURING THE SWITCH UNIT TO THE CONDUCTORS.

References Cited (Backward Citations)

US1957565A Cited
US2342320A Cited
US2412737A Cited
US2557926A Cited
US3127760A Cited
US3119913A Cited
US3201646A Cited
US3168632A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1971-04-09 1971-10-09 1972-04-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1975-04-09 1975-10-09 1976-04-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1979-04-09 1979-10-09 1980-04-09 $7700.00 Window Closed / Lapsed

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