Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1975-06-11
1976-10-05
Harris, George
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337414, H01H 8502
Patent
active
039848000
ABSTRACT:
An electric fuse has a casing of synthetic-resin-glass-cloth laminate which includes but three re-inforcement plies, namely an outermost ply of woven glass fiber cloth forming an overlap extending in a direction longitudinally of said casing, and innermost ply formed by spaced rovings of glass fibers extending in a direction longitudinally of said casing, and an intermediate ply formed by a mat of substantially non-uniformly oriented glass fibers, said overlap of said outermost ply and said rovings penetrating into said intermediate ply to such an extent that the outer surface and the inner surface of said casing are substantially smooth substantially cylindrical coaxial surfaces.
REFERENCES:
patent: 2866875 (1958-12-01), Swain et al.
patent: 3846727 (1974-11-01), Harmon
patent: 3911385 (1975-10-01), Blewitt et al.
Harris George
Salzer Erwin
The Chase-Shawmut Company
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