Westinghouse Air Brake Company

Ronald M Markos

Alvin J Matthews

Thomas M Hartzell

Richard H Gumbert

Lawrence R Streitman

Lawrence M Kushnir, Jr

The present invention provides a combination disc diaphragm assembly which comprises a disc portion having a first configuration and includes a round center portion having a first diameter and a first thickness. It further includes a round outer portion connected to and extending outwardly from an outer periphery of such center portion adjacent a bottom surface. The outer portion has a second diameter which is greater than such first diameter. The outer portion has a second thickness which is less than the first thickness. The disc also has a domed shaped cavity formed in the bottom surface and having a first radius. There is a diaphragm member having a second configuration and a third diameter which is greater than the second diameter of the disc. The diaphragm has a first side with a dome shaped projection disposed on a center portion. The domed shaped projection has a second radius. The first side of the diaphragm has a generally flat surface adjacent the dome shaped center. The diaphragm also has a second side having a dome shaped cavity formed in a center portion. The domed shaped cavity has a third radius. There is further a connection to the bottom surface of the disc portion and to a surface of the dome shaped projection and flat surface adjacent the domed shaped projection of the first side of the diaphragm for bonding the first side of the diaphragm member to the bottom portion of the disc portion.

Disc diaphragm for an intergrated cock valve

A valve bushing cleaning device for cleaning a valve bushing while the bushing is situated in a valve bore of a valve body, such as in a railway vehicle brake apparatus and a method for cleaning such valve bushing. The cleaning device comprises a hollow cylindrical conduit having a first open end attachable to a source of pressurized fluid and a second closed end. The conduit has a recessed portion with fluid passageways through the wall thereof and structure for securing a sealing member on each side of the fluid passageways. In the method, the closed end of the cleaning device is inserted into a valve bushing disposed in a valve bore of a valve body, with pressurized fluid forced through the conduit, out of the fluid passageways, and through apertures in the valve bushing, with any solids picked up and carried by the fluid through passages formed in the valve body.

Method of cleaning valve bushings

Valve bushing cleaning device and method of cleaning valve bushings

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McKeesport, PA, United States of America

Ronald M Markos