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US 5,426,411 AGranted
Current limiting fuse
AssigneeGould Electronics Inc.
InventorsRobert M. Pimpis, David E. Suuronen
Life of this patent
Estimating the term…
Abstract
A fuse that includes an insulative housing made from two housing pieces made of thermoplastic material, terminals extending through slots in the ends of the housing, and a fusible element having ends connected to both of the terminals. The housing includes a tubular portion and slotted end portions located at each of the two ends of the tubular
Claims31
A fuse comprising
- an insulative housing including two or more housing pieces that have been ultrasonically welded together, said housing having openings for receiving terminals, said housing pieces being made from a thermoplastic material that has a continuous use temperature greater than 110.degree. C. and includes 20%-40% nonplastic filler added to thermoplastic resins, said filler forming a support matrix within the thermoplastic material to provide improved structural integrity,
- terminals extending through respective said openings in said housing, each of said terminals having an internal portion inside said housing, an external portion outside of said housing, and a middle portion between said internal and external portions and located within one of said openings;
- and
- a fusible element having ends connected to respective internal portions of both of said terminals.
1 more element
A method of making a fuse comprising
- ultrasonically welding together housing pieces of thermoplastic material to provide an insulative housing, said housing pieces being made from a thermoplastic material that has a continuous use temperature greater than 110.degree. C. and includes 20%-40% nonplastic filler added to thermoplastic resins, said filler forming a support matrix within the thermoplastic material to provide improved structural integrity,
- providing terminals extending through openings in said housing, each of said terminals having an internal portion inside said housing, an external portion outside of said housing, and a middle portion between said internal and external portions and located within one of said openings, and
- connecting ends of a fusible element to respective internal portions of both of said terminals.
A fuse comprising
- an insulative housing including two or more housing pieces that have been joined together and define a cavity space therein for receiving a fusible element therein, said housing having openings for receiving terminals, said housing pieces being molded from a thermoplastic material, said housing having end walls and openings through respective end walls thereof, said housing having inner walls integral with and spaced from respective said end walls, said cavity being between said inner walls, said inner walls having surfaces defining passages therethrough aligned with said openings,
- terminals extending through respective said openings in said housing and passages through said inner walls, each of said terminals having an internal portion inside said cavity, an external portion outside of said housing, and a middle portion between said internal and external portions and located within and supported by one of said openings and located within one of said passages and being supported by said surfaces defining said one of said passages, and
- a fusible element having ends connected to respective internal portions of both of said terminals.
The fuse of 30 wherein said housing pieces also have portions with clearance at said mating seam portions.
Dependencies are inferred from the claim text.