Fused trolley switch

Details Fused trolley switch Fused trolley switch

1987-01-12

1988-08-23

Basinger, Sherman D.

Electricity: transmission to vehicles

Conductors

Trolley

191 38, 337 9, H01H 8500

Patent

active

047662697

ABSTRACT:
A fused trolley line insulation switch for use in underground mine haulage systems. When opened, the switch allows isolation of down stream feeder cables and trolley line wire. When closed, the switch provides short circuit protection to the system by a fuse on the switch. The fuse is located on the blade member interconnecting the upstream system portion and the downstream system portion thereby allowing quick and safe replacement of the fuse after the occurence of a ground fault.

REFERENCES:
patent: 680336 (1901-08-01), Linton
patent: 751084 (1904-02-01), Lowe
patent: 822237 (1906-06-01), Barkelew
patent: 897525 (1908-09-01), De Reamer
patent: 1253761 (1918-01-01), Wolfsberg
patent: 1307258 (1919-06-01), Johnston
patent: 1321390 (1919-11-01), Pelletier et al.
patent: 1400279 (1921-12-01), Freeman
patent: 1437961 (1922-12-01), Conrad
patent: 1532235 (1925-04-01), Dexter
patent: 3211859 (1965-10-01), Kobryner

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