Underground mine equipment

Details Underground mine equipment Underground mine equipment

1976-02-24

1978-01-10

Spar, Robert J.

Electricity: conductors and insulators

Conduits, cables or conductors

Accessories

138110, H01B 724

Patent

active

040680886

ABSTRACT:
An underground mine cable handler comprises two parallel ropes hauled behind the mining machine, a series of box like elements being threaded on the ropes to provide a protective corridor for at least one supply cable and/or hose for the machine.

REFERENCES:
patent: 1822624 (1931-09-01), Hoeftmann
patent: 2172130 (1939-09-01), Powell
patent: 2632836 (1953-03-01), Ackley
patent: 2829190 (1958-04-01), Comlossy, Jr.
patent: 2975807 (1961-03-01), Waninger
patent: 3060972 (1962-10-01), Sheldon
patent: 3071161 (1963-01-01), Ulrich
patent: 3382668 (1968-05-01), Berkes et al.
patent: 3428742 (1969-02-01), Smith
patent: 3467047 (1969-09-01), Chatten et al.

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