Brake beam paddle caps
AssigneeAmsted Rail Company, Inc.
InventorWEIPING WANG
Life of this patent
Estimating the term…
Abstract
A brake beam assembly for a railway car truck includes a brake beam configured to be mounted between opposed side frames of the railway car truck, a strut extending from the brake beam and brake heads coupled to the brake beam proximate to right hand and left hand ends thereof. Each brake head holds a brake shoe configured to engage a wheel of the railway car truck. Paddles extend exterior of the brake heads. The paddles have distal ends received in corresponding guide brackets of the side frames to guide movement of the brake beam. Paddle caps cover the distal ends of the paddles. The paddle caps are configured to be received in brake beam wear liners in corresponding side frames of the railway car truck. The paddle caps have a lower coefficient of friction than the paddles.
Claims20
A railway car truck comprising:
- a bolster having laterally opposite ends;
- two side frames transverse to the bolster and supporting the opposite ends of the bolster, each side frame having a guide bracket on an inner side of the side frame;
- brake beam wear liners manufactured from a synthetic material chosen from a nylon, or a high molecular weight polytheylene received in corresponding guide brackets on the side frames, the brake beam wear liner having a pocket;
- a brake beam assembly supported on the holster and side frames, the brake beam assembly comprising:
- a brake beam mounted between the side frames;
- a strut extending from the brake beam;
- brake heads coupled to the brake beam, each brake head holding a brake shoe configured to engage a wheel of the railway car truck;
- paddles at opposite ends of the brake beam assembly, the paddles being received in corresponding guide brackets to guide movement of the brake beams;
- and
- paddle caps covering the paddles, the paddle caps being received in pockets of corresponding wear liners, the paddle caps having a lower coefficient of friction than the paddles:, wherein the paddle caps are manufactured from a material having a substantially similar coefficient of friction as the brake beam wear liner.
(canceled)
The railway car truck of claim I. wherein each paddle cap includes rounded edges and corners facing the brake beam wear liner.
A brake beam assembly for a railway car truck, the brake beam assembly comprising:
- a brake beam configured to be mounted between opposed side frames of the railway car truck, the brake beam having opposite right hand and left hand ends;
- a strut extending from the brake beam;
- brake heads coupled to the brake beam proximate to the right hand and left hand ends thereof, each brake head holding a brake shoe configured to engage a wheel of the railway car truck;
- paddles exterior of the brake heads, the paddles having distal ends configured to be received in corresponding guide brackets of the side frames to guide movement of the brake beam with respect to the side frames;
- and
- paddle caps covering the distal ends of the paddles, the paddle caps being configured to be received in brake beam wear liners comprised of a nylon or a high molecular weight polyethylene material in corresponding side frames of the railway car truck, the paddle caps having a lower coefficient of friction than the paddles, wherein the paddle can are manufactured from a nylon or a high molecular weight polyethylene material.
(canceled)
Dependencies are inferred from the claim text.