Brake valve latch with enhanced lubricity

Details Brake valve latch with enhanced lubricity Brake valve latch with enhanced lubricity

1998-04-29

1999-10-12

Fox, John

Valves and valve actuation

With actuation lubricating means

251297, F16K 31524

Patent

active

059644494

ABSTRACT:
The present invention provides an improved lubrication system for use in a railway locomotive brake valve. Such railway locomotive brake valve includes a suppression cam having a plurality of detented control positions. It further includes a handle connected to the suppression cam for moving the suppression cam to such plurality of detented control positions. There is a spring loaded latch mechanism for engaging the suppression cam and providing a positive stop for such plurality of detented positions. The latch mechanism is a cylindrically shaped member with an elongated convex shaped protrusion at one end for engaging the suppression cam. Such brake valve further includes a bushing surrounding and guiding such latch mechanism. Such improved lubrication system comprises a coating of a preselected low friction material applied to and dried on at least one of the latch mechanism, the bushing and the suppression cam.

REFERENCES:
patent: 2852037 (1958-09-01), Downing et al.
patent: 5205538 (1993-04-01), Mackoway, Jr. et al.

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