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US 5,086,707 AGranted
Self adjusting constant contact side bearing for railcars
AssigneeAMSTED Industries Incorporated
InventorsCharles P. Spencer, Terry L. Pitchford
Life of this patent
Estimating the term…
Abstract
A constant contact side bearing or railcar trucks utilizes wedges or rollers to adjustably separate opposing and converging surfaces of a base member and a vertically biased cap member.
Claims20
An improved railcar truck side bearing, said bearing comprising:
- a base member having a bottom for attachment to the upper surface of a truck bolster, said base member also having at least one upstanding end wall;
- a cap member mounted for vertical movement with respect to said base, said cap member having at least one depending end portion spaced from said upstanding end wall of said base member;
- opposing surfaces on each of said end portion and end wall and at least one of said opposing surfaces being inclined with respect to the other of said opposing surfaces so as to converge toward said bottom of said base member;
- spacing means for maintaining said opposing surfaces separated, said means being positioned between said end wall and said end portion and being moveable with respect to said opposing surfaces as said cap member moves with respect to said base;
- and a biasing member under said cap member to urge said cap member upwardly of said base member.
2 more elements
An improved railcar truck side bearing, said side bearing comprising:
- a base member of boxlike shape having two upstanding side walls, two upstanding end walls and a bottom part for attachment to a truck bolster;
- a cap member mounted within said side walls and end walls of said base member, said cap member having a depending skirt with two end portions in spaced opposition to said end walls of said base member;
- sloped outer surfaces on each of said end portions of said cap members;
- sloped inner surfaces on each of said end walls of said base member, said sloped inner and outer surfaces being inclined to converge inwardly toward said bottom part of said base member;
- spacing means for maintaining each of said sloped outer surfaces separated from an opposing said sloped inner surface, said spacing means being positioned between each said end portion of said cap member and said end wall of said base member;
- and a biasing member under said cap member to urge said cap member upwardly of said base member.
3 more elements
Dependencies are inferred from the claim text.