Electricity: transmission to vehicles – Flexible extensions – Reels
Patent
1974-04-04
1976-03-09
Spar, Robert J.
Electricity: transmission to vehicles
Flexible extensions
Reels
242 8651, 254173R, H02G 1100
Patent
active
039433064
ABSTRACT:
An electrically driven earth-moving or construction machine provided with an electric motor as a main motor and a reel assembly to wind or unwind a cable extending to the machine from an electric source away from the machine with the advance and reverse of the machine such that required power is supplied from the stationary electric source located outside the machine to the electric motor and means of suspending power supply to the electric motor when the cable wound on the reel is unwound to a given length with the advance of the machine whereby an accident which might otherwise be caused by the careless continuance of advance of the machine with the cable completely unwound.
REFERENCES:
patent: 1112331 (1914-09-01), Sessions
patent: 2348987 (1944-05-01), Look
patent: 2589217 (1952-03-01), Ball
patent: 2599423 (1952-06-01), Ziegler
patent: 2656152 (1953-10-01), Moon
patent: 2781456 (1957-02-01), Buckeridge
patent: 3061233 (1962-10-01), Dudley
patent: 3380545 (1968-04-01), Kemper
patent: 3406918 (1968-10-01), Ramcke
Aihara Toru
Kimura Koichi
Caterpillar Mitsubishi Ltd.
Noland Kenneth
Spar Robert J.
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