Cable drum driven by an electric motor

Details Cable drum driven by an electric motor Cable drum driven by an electric motor

1985-09-06

1987-04-28

Reeves, Robert B.

Electricity: transmission to vehicles

Flexible extensions

Reels

242 54R, 242 85, H02G 1102

Patent

active

046616608

ABSTRACT:
A cable drum 1 powered by an electric motor (2) for multi-conductor cables of heavy cross-section. To provide for insertion of the cable (4) into the cable drum (1) to be carried out without the use of slip-rings, twistable conductors (10) of high-elasticity are provided and are attached to rotate with the drum (1) at one end of a length L coaxial with the axis of rotation 1a of the drum (1). At the other end of the length L the conductors (10) are attached in a non-rotatable manner to a terminal box (15). The conductors (10) in the length L are guided between the points of attachment 12, 14 within a fixed tube (13). The terminal box (15) may be mounted on a slide 15a for movement in the axial direction of the tube and may be held under the tension of a spring (16) acting in the direction opposed to the movement. Alternatively the tube can be mounted at an angle to the axis of the rotation of the cable drum (1). When the tube (13) is mounted at an angle, the conductors (10) adjacent the cable drum (1) are enclosed in a flexible guide element which is attached at one end to the cable drum coaxially with the axis of rotation thereof and at the other end is mounted in a bearing so that the guide element can rotate, the axis of rotation of the bearing being coaxial with the axis of the tube.

REFERENCES:
patent: 1729781 (1929-10-01), Holmes
patent: 2108111 (1938-02-01), Ehrlich
patent: 2141909 (1938-12-01), Hauser
patent: 2572856 (1951-10-01), Hallberg
patent: 2781456 (1957-02-01), Buckeridge
patent: 3144218 (1964-08-01), Tepe
patent: 3373954 (1968-03-01), Hilsinger, Jr.
patent: 4384688 (1983-05-01), Smith
patent: 4436190 (1984-03-01), Wentzell

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