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US 5,964,449 AGranted
Brake valve latch with enhanced lubricity
AssigneeWestinghouse Air Brake Company
InventorsWalter E. Goettel, George Drahusz
Life of this patent
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AssigneeWestinghouse Air Brake Company
InventorsWalter E. Goettel, George Drahusz
Estimating the term…
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.
An improved lubrication system for use in a railway locomotive brake valve including a suppression cam having a plurality of detented control positions, a handle connected to said suppression cam for moving said suppression cam to said plurality of detented control positions, a spring loaded latch mechanism engaging said suppression cam and providing a positive stop for said plurality of detented positions, said latch mechanism being a cylindrically shaped member with an elongated convex shaped protrusion at one end for engaging said suppression cam, and a bushing surrounding said latch mechanism, said lubrication system comprising:
Dependencies are inferred from the claim text.