High-voltage fuse

Claim 2

A subassembly for making high-voltage fuses including: a. a pair of cylindrical coaxially arranged spaced metal blocks having systems of registering grooves at the juxtaposed end surfaces thereof, each of said systems of grooves being substantially in the shape of a polygon; b. a plurality of strips of insulating material arranged parallel to the common axis of said pair of metal blocks and inserted with the end edges thereof into said systems of grooves, said plurality of strips defining a prismatic surface, and said plurality of strips further leaving wide gaps between immediately adjacent longitudinal edges thereof; and c. a ribbon fuse link having a plurality of points of reduced cross section would helically around said plurality of strips and engaging with the wide surface thereof the wide surfaces of said plurality of strips, the ends of said fuse link being in contact with said juxtaposed end surfaces of said metal blocks.

Claim 3

A subassembly as specified in claim 1 wherein each of said systems of grooves is in the shape of a square.

Claim 4

A subassembly as specified in claim 1 including additional strip means arranged parallel to the constituent strips of said plurality of strips and sandwiching said ribbon fuse link jointly with said constituent strips of said plurality of strips, said additional strip means being supported by said plurality of strips.

Claim 5

A high-voltage fuse including: a. a tubular casing of electric insulating material; b. a pair of cylindrical spaced metal blocks plugging the ends of said casing, each of said pair of metal blocks having a polygon-shaped system of grooves on the axially inner end surface thereof; c. a plurality of strips of insulating material arranged parallel to the joint axis of said housing and said pair of metal blocks and inserted with the end edges thereof into said system of grooves of each of said pair of metal blocks and defining a prismatic surface, said plurality of strips leaving wide gaps between immediately adjacent longitudinal edges thereof; d. ribbon fuse link means having a plurality of serially related points of reduced cross section wound helically around said plurality of strips and engaging with the wide surface thereof the wide surfaces of said plurality of strips, the ends of said fuse link means being in contact with said axially inner end surface of each of said pair of metal blocks; and e. pulverulent arc-quenching filler means inside said casing submersing said plurality of strips and said ribbon fuse link means.

Claim 6

A high-voltage fuse including: a. a tubular casing of electric insulating material; b. a pair of cylindrical spaced metal blocks plugging the ends of said casing, each of said pair of metal blocks having a polygon-shaped system of grooves on the axially inner end surface thereof; c. a plurality of strips of insulating material arranged parallel to the joint axis of said housing and said pair of metal blocks and inserted with the end edges thereof into said system of grooves of each of said pair of metal blocks and defining a prismatic surface, said plurality of strips leaving wide gaps between immediately adjacent longitudinal edges thereof; d. ribbon fuse link means having a plurality of serially related points of reduced cross section wound helically around said plurality of strips and engaging with the wide surface thereof the wide surfaces of said plurality of strips, the ends of said fuse link means being in contact with said axially inner end surface of each of said pair of metal blocks; and e. pulverulent arc-quenching filler means inside said casing submersing said plurality of strips and said ribbon fuse link means.

Claim 7

A high-voltage fuse as specified in claim 4 wherein said system of grooves in each of said pair of metal blocks has the shape of a square.

Claim 8

A high-voltage fuse as specified in claim 4 including additional strip means arranged parallel to the constituent strips of said plurality of strips and sandwiching said ribbon fuse link means jointly with said constituent strips of said plurality of strips, said additional strip means being supported by said plurality of strips.