Transport system with electric movers

Railways – Car stops – Releasable feed

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Details

104288, 104295, 104249, 104251, B61K 700

Patent

active

055114873

ABSTRACT:
A transport system having (i) electrical movers for moving in a travel direction along a guide rail, each having (a) a drive wheel, (b) a brakeless electric motor for rotating the drive wheel, (c) a photoelectric switch adapted to sense the proximity of an object, (d) a contact member for stopping movement of the electric mover at a predetermined location, the photoelectric switch being disposed in the travel direction ahead of said contact member for switching the supply of electrical power to the motor upon sensing or ceasing to sense a previously sensed proximity of an object, and (ii) a stopping mechanism located along the guide rail for stopping the movement of an electric mover, including (a) a stopper adapted in an operative position thereof to stop a moving electrical mover by contact with the contact member, and to allow movement of the electrical mover when the stopper is not in its operative position, (b) a shifter for shifting the stopper in and out of its operating position, and (c) a detectable member shiftable by the shifter to a position perpendicularly to the travel direction when the detectable member is shifted to said perpendicular position, it can be sensed by the photoelectric switch before contact between the stopper and the contact member.

REFERENCES:
patent: 3314376 (1967-04-01), Lerch et al.
patent: 3397650 (1968-08-01), Kondur et al.
patent: 3437054 (1969-04-01), Bishop
patent: 3477390 (1969-11-01), Dolding
patent: 3503471 (1970-03-01), Balke
patent: 3648619 (1972-03-01), Wilkinson
patent: 3696756 (1972-10-01), Elmore et al.
patent: 3892186 (1975-07-01), Pipes et al.
patent: 3948187 (1976-04-01), Moore
patent: 4941555 (1990-07-01), Antunes

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