Railcar cushion unit

Details Railcar cushion unit Railcar cushion unit

1993-08-27

1995-05-16

Le, Mark T.

Railway draft appliances

Cushioned

Springs

188269, 18832213, 137542, 13754313, 137536, B61G 908

Patent

active

054153034

ABSTRACT:
A railway car cushioning device is provided for minimizing slack between railway cars. The cushioning device is provided with a piston and piston rod disposed within the cylinder. The cylinder is filled with an oil and gas mixture. A housing surrounds the cylinder providing a fluid recovery reservoir defined by the space between the outer wall of the cylinder and the housing. At one end of the cylinder is a bulkhead and at the other end is a cylinder head. The piston rod extends through a hole formed in the cylinder head and is joined to the sill of a railcar. A coupler is joined to the cushioning device for coupling to another railway car. A series of pressure relief valves are provided and engaged with egress ports formed in the cylinder wall between the bulk head and the piston when the piston is in an extended position. The pressure relief valves are constructed so that fluid may flow in only one direction, from the interior of the cylinder to the fluid reservoir. The pressure relief valves open only in response to a given fluid pressure within the cylinder. A restoration valve allows fluid to escape from the cylinder when the piston is restored to its initial position, and a bleed valve is provided for exhausting gas from the cylinder when the cushioning device is at rest.

REFERENCES:
patent: 3516520 (1970-06-01), Agren et al.
patent: 3568855 (1971-03-01), Seay et al.
patent: 3589527 (1971-06-01), Seay et al.
patent: 3589528 (1971-06-01), Stephenson
patent: 3598249 (1971-08-01), Vickerman
patent: 3647088 (1972-03-01), Seay et al.
patent: 3752329 (1973-08-01), Seay et al.
patent: 3791534 (1974-02-01), Stephenson
patent: 3854596 (1974-12-01), Stephenson et al.
patent: 3864922 (1975-02-01), Dial et al.
patent: 4026418 (1977-05-01), Hawthorne
patent: 4043545 (1977-08-01), Dial et al.
patent: 4113113 (1978-09-01), Reinhardt et al.
patent: 5025938 (1991-06-01), Bomgardner et al.

Affiliated with

Also associated with

Rating

Railcar cushion unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Railcar cushion unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Railcar cushion unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-633077