Pumping apparatus with piston seal and cylinder removing means

Details Pumping apparatus with piston seal and cylinder removing means Pumping apparatus with piston seal and cylinder removing means

1993-03-03

1994-05-31

Bertsch, Richard A.

Pumps

Processes

417234, 417415, 92128, F01B 2900

Patent

active

053164458

ABSTRACT:
A user-replaceable pumping chamber for a consumer piston pump has a reciprocating piston seal secured to the end of a piston by a threaded fastener. The chamber further has a smooth-bored cylindrical sleeve surrounding the seal to form a cylindrical wall for the chamber. The seal is retained to the piston by a threaded shoulder screw and washer acting against an O-ring in an end face of the seal. The housing has an aperture providing access to the cylindrical sleeve to permit levering a worn sleeve out of the housing.

REFERENCES:
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patent: 1768799 (1930-07-01), Stanley
patent: 1977075 (1934-10-01), Magnuson
patent: 2155180 (1939-04-01), Caldwell
patent: 2483845 (1949-10-01), Robertson
patent: 2701743 (1955-02-01), Mattingly et al.
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patent: 3053194 (1962-09-01), Webster
patent: 3142257 (1964-07-01), Schudt
patent: 3216365 (1965-11-01), Detinger et al.
patent: 4016850 (1977-04-01), Bloemers
patent: 5007276 (1991-04-01), Kadis et al.
patent: 5141414 (1992-08-01), Pierce et al.

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