Releasable skate retarder for railway cars

Details Releasable skate retarder for railway cars Releasable skate retarder for railway cars

2006-11-28

2006-11-28

Morano, S. Joseph (Department: 3617)

Railways

Car yard

Track brake

C104S250000, C188S062000

Reexamination Certificate

active

07140302

ABSTRACT:
The present invention provides a releasable skate retarder for railway cars. The retarder includes a plurality of spring packs including springs which bias shoe carrying beams toward running rails, trapping wheels of a railway car entering the retarder between the shoes and the running rails, and applying a frictional force to the railway car wheels for stopping the railway car and retaining the railway car in the retarder. The retarder is operable in a release mode in which an operating mechanism moves the shoe beams to a release position in which the spring force is released, allowing the railway car to move freely through the retarder. The retarder is operable in a service mode in which the operating mechanism moves the shoe beams outwardly, allowing the insertion of shims which cause the shoes to be repositioned closer to the running rails to compensate for shoe wear. In one embodiment, the operating mechanism includes a plurality of rams and a common operating member which couples the rams to the spring packs, for drawing the shoe beams inwardly when operating in the release mode and for pushing the spring packs outwardly when operating in the service mode.

REFERENCES:
patent: 5029675 (1991-07-01), Zhukov et al.
patent: 5388525 (1995-02-01), Bodkin
patent: 5676337 (1997-10-01), Giras et al.
patent: RE36084 (1999-02-01), Gutknecht
patent: 5967051 (1999-10-01), Ragsdale et al.
patent: 6152042 (2000-11-01), Barry et al.
patent: 6829998 (2004-12-01), Kickbush

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