Method and apparatus for making composition friction materials

Details Method and apparatus for making composition friction materials Method and apparatus for making composition friction materials

1977-07-25

1979-10-02

McCarthy, Edward J.

Agitating

In vacuum chamber

366144, 366244, 366309, B01F 1306, B01F 1506

Patent

active

041696808

ABSTRACT:
Composition friction materials particularly adapted for use in making railroad brake shoes include an elastomer such as synthetic rubber or natural rubber. The elastomer forms part of a bond for the remaining friction ingredients. The elastomer, solvent and nonsolvent absorbing granular abrasive materials of the composition are mixed in a manner such that the elastomer is quickly reduced to a paste-like consistency to which the remaining ingredients are added and mixed to form pellets which can be conveniently formed into brake shoes.

REFERENCES:
patent: 2367149 (1945-01-01), Smith
patent: 3521863 (1970-07-01), Graham
patent: 3544522 (1970-12-01), Hahn
patent: 3751010 (1973-08-01), Latinen

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