Valves and valve actuation – Valve – Materials
Patent
1997-09-26
1999-09-07
Chambers, A. Michael
Valves and valve actuation
Valve
Materials
251214, F16K 3144
Patent
active
059474467
ABSTRACT:
A bushing for a railroad control valve composed of aluminum having an anodized surface with a teflon layer at least where a valve element moves within the bushing. The teflon is preferably impregnated into the anodized surface or may be a continuous teflon sheet bound to the anodized surface.
REFERENCES:
patent: 3744755 (1973-07-01), Gary, Jr. et al.
patent: 4453898 (1984-06-01), Leka et al.
patent: 5397063 (1995-03-01), Weinstein
AnoLube III, Anoplate Corporation, a circular, Achieving synergy with hard anodize and Teflon.
Product Specifications Alcoa UltrAlloy X6020, Oct. 1996.
Chambers A. Michael
New York Air Brake Corporation
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