Westinghouse Air Brake Company

Other

Westinghouse Air Brake Technologies Corporation

Rfpc Holding Corp.

Joseph F Formolo

Bruce W Shute

Kelvin Chiddick

Thomas W McCabe

Thomas W Mccabe

A molded brake shoe formed of friction material with or without a metal backing. Along at least a portion of at least one side surface of the brake shoe there is a layer of the molded friction material reinforced with a fiber.

Side reinforced railway brake shoe

A friction wedge assembly for use in a suspension system of railroad car trucks. The friction wedge assembly comprises a cast metal wedge having a bottom face, a vertical face that is substantially perpendicular to the bottom face and a sloped face for contacting a mating surface on a bolster of such railroad car truck. There is a metal backing plate that has a first side removably engageable with the vertical face of the cast metal wedge, a means for securing the metal backing plate to the cast metal wedge and a composition liner disposed on a second side of the metal backing plate for engaging such metal wear liner on such side frame of such railroad car truck.

Friction wedge liner with backing plate

The present invention provides a friction management brake shoe adapted to engage the tread and the flange of a wheel of a railway vehicle via which the railway vehicle is guidably supported on a railed track. The friction management brake shoe comprises a brake lining affixed which has a braking surface engageable with the wheel tread of a wheel of a railway vehicle. The brake lining includes a first friction composition material formed with at least one of a solid high positive friction modifier and a solid very high positive friction modifier which establish a required friction level between the wheel tread and the railed track.

Brake shoe with friction management

A self lubricating material for use in a castable material from which a predetermined component having at least one friction surface is to be manufactured. Such self lubricating type material consisting essentially of cellulose in the range of between about 4.0 weight percent and about 9.0 weight percent, resin in the range of between about 15.0 weight percent and about 20.0 weight percent, vermiculite in the range of between about 20.0 weight percent and about 25.0 weight percent, nut shells in a range of between about 12.0 weight percent and about 20.0 weight percent, fluorspar in a range of between about 11.0 weight percent and about 14.0 weight percent and oil in the range of between about 20.0 weight percent and about 26.0 weight percent.

Self lubricating brake shoe material

A composition brake shoe is used in a railway freight vehicle for reconditioning a wheel surface of a railway freight vehicle. Such brake shoe includes a brake surface having a predetermined configuration and a predetermined surface area. The composition brake shoe consists of a first friction composition material extending over the surface area of such composition brake shoe. A second friction type composition material is formed as a discrete insert, having a predetermined shape, and is molded into the first friction composition material. Such second friction composition material initially is completely embedded within the first friction composition material. One surface of the insert is disposed facing the predetermined surface area of the brake surface of the composition brake shoe. Such one surface of the insert being incrementally exposed as the first friction composition material is eroded away due to frictional engagement with the wheel tread surface during normal braking operations. The second friction composition material exhibits greater abrasive properties than the first friction composition material and consists essentially of a ceramic grinding material. Such first friction composition material extends entirely over the predetermined surface area of the brake surface of the composition brake shoe when the discrete insert has been worn away due to frictional engagement with the wheel tread surface during normal braking operations.

Growing community of inventors

Laurinburg, NC, United States of America

Joseph F Formolo