Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1996-12-31
1998-12-29
Feild, Lynn D.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337159, 337180, 337181, H01H 8502, H01H 85143, H01H 8515
Patent
active
058545832
ABSTRACT:
Automotive-type fuse for large currents, in which a generally rectangular metal strip of tin-plated zinc, with a central portion shaped to form a conductor of smaller conducting cross section, is provided, at each of its opposite ends, with a circular hole for the screw of an electrical terminal clamp, this hole being surrounded by an annular insert caulked into the strip, made of metal, such as copper with tellurium or with beryllium, with a modulus of elasticity and yield-point stress higher than that of zinc, to ensure the stability of the screw clamp, even under vibration, with a clamping pressure greater than the yield-point stress of zinc, by means of the elastic reaction exerted by the ring. The central portion of the strip, having the function of a fusible element, is advantageously housed in an opaque plastic containment housing provided with two juxtaposed windows, on opposite sides of the fusible element, so that the condition of the fuse can be checked visually, the windows being closed by transparent plastic shields.
REFERENCES:
patent: 1874949 (1932-08-01), Fogal
patent: 4837546 (1989-06-01), Bernstein
patent: 5113169 (1992-05-01), Ruehl et al.
patent: 5229739 (1993-07-01), Oh et al.
patent: 5293147 (1994-03-01), Oh et al.
patent: 5590026 (1996-12-01), Warren et al.
Feild Lynn D.
Meccanotecnica Codognese S.p.A.
Vortman Anatoly
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