Electric fuse holder

Claim 2

A modular fuse holder unit comprising a. a substantially prismatic block of a synthetic resin supporting a pair of fuse clips; b. said block being planar on two opposite sides thereof except for a planar projection on one of said sides and a planar recess on the other of said sides, both said projection and said recess beginning at the lower edge of said block and extending in upward direction; c. said projection slightly converging in upward direction and defining a first pair of grooves on both lateral sides thereof whose depth slightly increases in upward direction and are bounded by a first pair of ribs whose thickness slightly decreases in upward direction; d. said recess slightly converging in upward direction and defining a second pair of grooves on both lateral sides thereof whose depth slightly decreases in upward direction and are bounded by a second pair of ribs whose thickness slightly increases in upward direction; and e. said projection and said first pair of grooves and said recess and said second pair of grooves being complementary positives and negatives whereby said block is capable of being joined under wedge pressure with other identical blocks by engagement of said recess in one of said blocks by said projection in another of said blocks and by engagement of said second pair of grooves in one of said blocks by said first pair of ribs in another of said blocks.

Claim 3

A modular fuse holder unit comprising a. a support for a pair of fuse clips; b. one side of said support having a planar projection beginning at an edge region thereof which is wider at the front than at the rear thereof so as to form a first pair of grooves, one to each side of said projection, said projection converging in upward direction and the cross-sectional area of said first pair of grooves increasing in upward direction, and are bounded by a first pair of ribs whose thickness decreases in upward direction; c. the opposite side of said support having a planar recess beginning at an edge region thereof which is wider at the rear than at the front thereof so as to form a second pair of grooves, one to each side of said recess, said recess converging in upward direction and the cross-sectional area of said second pair of grooves decreasing in upward direction, and are bounded by a second pair of ribs whose thickness increases in upward direction; d. said recess and said second pair of grooves being complementaries of said projection and said first pair of grooves whereby said support is capable of being joined under wedge pressure with other identical supports by a first wedge action achieved by engagement of said recess in one of said supports by said projection of another of said supports, and by a second wedge action achieved by engagement of said first pair of grooves of one of said supports by said second pair of ribs of another of said supports.

Claim 4

A modular fuse holder unit comprising a. a support for a pair of fuse clips; b. one side of said support having a planar projection beginning at an edge region thereof which is wider at the front than at the rear thereof so as to form a first pair of grooves, one to each side of said projection, said projection converging in upward direction and the cross-sectional area of said first pair of grooves increasing in upward direction, and are bounded by a first pair of ribs whose thickness decreases in upward direction; c. the opposite side of said support having a planar recess beginning at an edge region thereof which is wider at the rear than at the front thereof so as to form a second pair of grooves, one to each side of said recess, said recess converging in upward direction and the cross-sectional area of said second pair of grooves decreasing in upward direction, and are bounded by a second pair of ribs whose thickness increases in upward direction; d. said recess and said second pair of grooves being complementaries of said projection and said first pair of grooves whereby said support is capable of being joined under wedge pressure with other identical supports by a first wedge action achieved by engagement of said recess in one of said supports by said projection of another of said supports, and by a second wedge action achieved by engagement of said first pair of grooves of one of said supports by said second pair of ribs of another of said supports.

Claim 5

A fuse holder as specified in claim 2 wherein said fuse clip carriers are made of a hardened glass-filled polyester resin.

Claim 6

A multipolar modular fuse holder comprising a plurality of fuse clip carriers shaped to fit together at the longitudinal surfaces thereof, said fuse holder comprising the novel features that a. the lateral surfaces of each fuse clip carrier are planar except at one single point of said surfaces situated immediately adjacent a lower lateral edge thereof; b. said one point of one of said lateral surfaces is formed by a planar projection decreasing in width in upward direction, said projection being wider at the front than on the base thereof thereby defining a first pair of grooves, one to each side thereof, a first pair of ribs each bounding one of said first pair of grooves, said first pair of grooves being open at the lower ends thereof and diverging in upward direction and said first pair of ribs converging in upward direction; c. said one point on the other of said lateral surfaces is formed by a planar recess decreasing in width in upward direction, said recess being wider at the base than at the front thereof thereby defining a second pair of grooves and a second pair of ribs each bounding one of said second pair of grooves; said second pair of grooves being open at the lower ends thereof and converging in upward direction and said pair of ribs diverging in upward direction; d. said projection and said first pair of grooves and said recess and said second pair of grooves being complementary positives and negatives whereby said fuse clip carriers are being joined under pressure by a first wedge action achieved by engagement of said recess in one of said supports by said projection in another of said supports and by a second wedge action achieved by engagement of said first pair of grooves in one of said supports by said second pair of ribs in another of said supports.

Claim 7

A multipolar modular fuse holder comprising a plurality of fuse clip carriers shaped to fit together at the longitudinal surfaces thereof, said fuse holder comprising the novel features that a. the lateral surfaces of each fuse clip carrier are planar except at one single point of said surfaces situated immediately adjacent a lower lateral edge thereof; b. said one point of one of said lateral surfaces is formed by a planar projection decreasing in width in upward direction, said projection being wider at the front than on the base thereof thereby defining a first pair of grooves, one to each side thereof, a first pair of ribs each bounding one of said first pair of grooves, said first pair of grooves being open at the lower ends thereof and diverging in upward direction and said first pair of ribs converging in upward direction; c. said one point on the other of said lateral surfaces is formed by a planar recess decreasing in width in upward direction, said recess being wider at the base than at the front thereof thereby defining a second pair of grooves and a second pair of ribs each bounding one of said second pair of grooves; said second pair of grooves being open at the lower ends thereof and converging in upward direction and said pair of ribs diverging in upward direction; d. said projection and said first pair of grooves and said recess and said second pair of grooves being complementary positives and negatives whereby said fuse clip carriers are being joined under pressure by a first wedge action achieved by engagement of said recess in one of said supports by said projection in another of said supports and by a second wedge action achieved by engagement of said first pair of grooves in one of said supports by said second pair of ribs in another of said supports.

Claim 8

A fuse holder as specified in claim 4 wherein each of said fuse clip carriers is provided with four congruent partitions whose cross-sectional area decreases toward the exposed edges thereof.

Claim 9

A modular fuse holder comprising a. a substantially prismatic block of synthetic resin for supporting a pair of fuse clips; b. a pair of fuse clips supported by said block; c. said block being planar at two opposite sides thereof except for a substantially planar projection on one side thereof and a substantially planar recess on the other side thereof, said projection and said recess both converging in upward direction so as to exert a first wedge action when said projection of one fuse holder engages said recess in another fuse holder; and d. the end surface of said projection being larger than the base thereof so as to form a first pair of lateral overhangs and a first pair of lateral grooves behind said first pair of overhangs increasing in cross-sectional area in upward direction, and the end surface of said recess being larger than the open end thereof so as to form a second pair of lateral overhangs decreasing in cross-sectional area in upward direction, whereby a second wedge action is exerted at right angles to said first wedge action when said first pair of lateral overhangs of one fuse holder engages said second pair of overhangs of another fuse holder.

Claim 10

A modular fuse holder comprising a. a substantially prismatic block of synthetic resin for supporting a pair of fuse clips; b. a pair of fuse clips supported by said block; c. said block being planar at two opposite sides thereof except for a substantially planar projection on one side thereof and a substantially planar recess on the other side thereof, said projection and said recess both converging in upward direction so as to exert a first wedge action when said projection of one fuse holder engages said recess in another fuse holder; and d. the end surface of said projection being larger than the base thereof so as to form a first pair of lateral overhangs and a first pair of lateral grooves behind said first pair of overhangs increasing in cross-sectional area in upward direction, and the end surface of said recess being larger than the open end thereof so as to form a second pair of lateral overhangs decreasing in cross-sectional area in upward direction, whereby a second wedge action is exerted at right angles to said first wedge action when said first pair of lateral overhangs of one fuse holder engages said second pair of overhangs of another fuse holder.

Claim 11

A coupled pair of modular fuse holders comprising a. a substantially identical pair of prismatic blocks of synthetic resin each supporting a pair of fuse clips; b. each of said pair of blocks being planar on juxtaposed sides thereof except for a substantially planar projection on one of said sides extending upwardly from an edge thereof and arranged approximately at the middle of said one of said sides, and except for a recess having a substantially planar bottom on the other of said sides extending upwardly from an edge thereof and arranged approximately at the middle of said other of said sides; c. the end surface of said projection being larger than the base thereof so as to form a first pair of lateral ribs and a first pair of grooves behind said first pair of ribs, and the end surface of said recess being larger than the open end thereof so as to form a pair of lateral ribs and a second pair of grooves behind said second pair of ribs; and d. said projection engaging said recess and said first pair of ribs engaging said second pair of grooves; e. said projection and said recess converge in upward direction; and f. wherein the cross-sectional area of said first pair of grooves increases and the cross-sectional area of said second pair of grooves decreases in upward direction.

Claim 12

A coupled pair of modular fuse holders comprising a. a substantially identical pair of prismatic blocks of synthetic resin each supporting a pair of fuse clips; b. each of said pair of blocks being planar on juxtaposed sides thereof except for a substantially planar projection on one of said sides extending upwardly from an edge thereof and arranged approximately at the middle of said one of said sides, and except for a recess having a substantially planar bottom on the other of said sides extending upwardly from an edge thereof and arranged approximately at the middle of said other of said sides; c. the end surface of said projection being larger than the base thereof so as to form a first pair of lateral ribs and a first pair of grooves behind said first pair of ribs, and the end surface of said recess being larger than the open end thereof so as to form a pair of lateral ribs and a second pair of grooves behind said second pair of ribs; and d. said projection engaging said recess and said first pair of ribs engaging said second pair of grooves; e. said projection and said recess converge in upward direction; and f. wherein the cross-sectional area of said first pair of grooves increases and the cross-sectional area of said second pair of grooves decreases in upward direction.