Rail car double acting piston shock absorber

Details Rail car double acting piston shock absorber Rail car double acting piston shock absorber

1993-09-10

1995-02-14

Oberleitner, Robert J.

Railway draft appliances

Cushioned

Continuous

213 43, 213 45, 213 46R, 188287, B61G 916

Patent

active

053887115

ABSTRACT:
A shock absorber for use with a sliding center sill rail car utilizes an internal gas type spring. The shock absorber has a housing and a cylinder located in the housing that moves with the center sill. An annular outer chamber surrounds the cylinder within the housing. Two pistons are slidably carried in the cylinder for independent movement relative to each other. Each has a shaft that extends in opposite directions. The shafts engage stationary stops mounted stationarily to the frame of the rail car. Ports are located in the side wall of the cylinder for the outflow and inflow of a gas and liquid fluid combination. The ports are symmetrical measured either from the rearward end or the forward end.

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patent: 4591031 (1986-05-01), First
Keystone Shock Control Hydraulic Cushioned Underframe (Protects Cars and Lading-Reduces LOSS and DAMAGE Claims), Sec. 12, Keystone Railway Equipment Co., Chicago, Ill. 60604.

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