Railways – Suspended
Patent
1994-01-20
1995-09-19
Le, Mark T.
Railways
Suspended
104249, 104251, 104252, 104288, 105148, B61B 300
Patent
active
054507960
ABSTRACT:
A transport system having a first electric rail car adapted to be propelled over a guide rail, a rail car stopping device being disposed separately from the first rail car along the guide rail, the first rail car having a brakeless motor, an electric power supply circuit for the motor, a wheel driven from the electric motor, a first limit switch, a second limit switch, the first and second limit switches being in the electric power supply circuit for selectively cutting off the supply of electricity to the motor, a stop engaging member, and stopping control device for a second electric rail car following the first electric rail car, the stopping control device having an elongated member projecting rearwardly from the first electric rail car for opening a second limit switch of the second electric rail car when the second electric rail car approaches the first electric rail car closer than a predetermined distance to prevent a collision between the first and second electric rail cars, the stopping control device having a flat control face portion for controlling an electrical limit switch of the second electric rail car so that the second rail car continues to move by its momentum after electric power to its motor was cut off when the second limit switch was opened by contact with the stopping control device.
REFERENCES:
patent: 3477390 (1969-11-01), Doling
patent: 3861323 (1975-01-01), Turner
patent: 3948187 (1976-04-01), Moore
patent: 4147110 (1979-04-01), Knudsen
patent: 4294174 (1981-10-01), Todt
patent: 4735042 (1988-04-01), Igel
patent: 5060789 (1991-10-01), Nelson
patent: 5083656 (1992-01-01), Nelson
patent: 5211115 (1993-05-01), Maier et al.
Daifuku Co. Ltd.
Le Mark T.
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