Door position indicating mechanism for a railcar

Details Door position indicating mechanism for a railcar Door position indicating mechanism for a railcar

2008-05-06

2008-05-06

Olson, Lars A. (Department: 3617)

Railway rolling stock

Special car bodies

Dumping

C105S240000, C105S280000

Reexamination Certificate

active

07367272

ABSTRACT:
A door position indicating mechanism for use with a railroad car. The mechanism includes a shaft which extends across the longitudinal direction of the car. An offset section of the shaft has a roller which contacts a lever which is shifted by an air cylinder when operating the door mechanism. At least one counterweight biases the roller into constant contact with the door operating lever. Indicators are mounted on either end of the shaft such that the position of the doors can be noted from either side of the railroad car.

REFERENCES:
patent: 1022521 (1912-04-01), Weaver
patent: 3360302 (1967-12-01), Bagguley
patent: 3580642 (1971-05-01), Nagy
patent: 5249531 (1993-10-01), Taylor
patent: 5823118 (1998-10-01), Manstrom
patent: 6263803 (2001-07-01), Dohr et al.
patent: 6412422 (2002-07-01), Dohr et al.
patent: 7140303 (2006-11-01), Fortuna

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