Valve bushing cleaning device and method of cleaning valve bushi

Details Valve bushing cleaning device and method of cleaning valve bushi Valve bushing cleaning device and method of cleaning valve bushi

1990-12-12

1992-09-15

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

For work having hollows or passages

134167C, 134172, 134198, B08B 302

Patent

active

051469391

ABSTRACT:
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.

REFERENCES:
patent: 2136881 (1938-11-01), Johnson
patent: 2512801 (1950-06-01), Kinney et al.
patent: 2762439 (1956-09-01), Pomeroy
patent: 3760878 (1973-09-01), Peevey
patent: 3945436 (1976-03-01), Nebolsine
patent: 4030545 (1977-06-01), Nebolsine
patent: 4763728 (1988-08-01), Lacey
patent: 4765405 (1988-08-01), Clark
patent: 4776395 (1988-10-01), Baker et al.

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