Railcar cushion device valving systems

Details Railcar cushion device valving systems Railcar cushion device valving systems

1996-11-12

1998-10-27

Morano, S. Joseph

Railway draft appliances

Cushioned

Springs

188287, 18832213, 1375147, B61G 916

Patent

active

058267352

ABSTRACT:
A valving system for a rail car cushion device including several pressure control relief sequence valves (PCRS) mounted in the cylinder wall of the cushion device each having hydraulic biasing applied to retain a valve piston against a seat until a preload pressure is reached, with one or more optional spike control (SC) valves mounted in a cushion device piston head.

REFERENCES:
patent: 3621875 (1971-11-01), Alexander
patent: 3797673 (1974-03-01), Daugherty, Jr.
patent: 5325700 (1994-07-01), Litten
patent: 5415303 (1995-05-01), Hodges et al.
patent: 5487480 (1996-01-01), Page et al.
patent: 5603348 (1997-02-01), Geringer
patent: 5642823 (1997-07-01), Kalina et al.

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