Fused plug assembly with fuse unit having spare fuse elements

Claim 1

A fused plug assembly, comprising: a plug body formed with a pair of parallel spaced elongated prong sockets open to one end of the plug body and a central elongated fuse socket having a mouth open to the opposite end of the plug body; a pair of parallel spaced prong members projecting as prongs from said opposite end of the plug body in alignment with said prong sockets, said prong members each having two legs within the plug body, one leg being exposed to a respective of said prong sockets and the second leg being exposed by a contact portion to the fuse socket; a pair of wire leads extending from the plug body between the ends of the latter and having a pair of spaced wire contacts connected thereto, said wire contacts being exposed to said fuse socket in general alignment with and spaced from respective of said contact portions and said wire contacts and contact portions being coplanar; a push-in fuse unit having a fuse body slidably received in the fuse socket with its head located between said prongs, said unit having an active pair of parallel spaced elongated fuse elements on one side of said fuse body each arranged to engage a said contact portion and respective wire contact, and said unit having a matching spare pair of fuse elments arranged to function in place of the active pair when said fuse body is removed and repositioned in said socket.