Pump piston cylinder assembly with exterior ring seals

Details Pump piston cylinder assembly with exterior ring seals Pump piston cylinder assembly with exterior ring seals

1979-09-11

1981-08-25

Croyle, Carlton R.

Pumps

Expansible chamber type

Moving cylinder

92170, F04B 2108

Patent

active

042856426

ABSTRACT:
A two-stroke piston pump includes an external piston cylinder seal by providing a flexible sidewall portion of the cylinder and an elastic O-ring sized to squeeze the flexible sidewall against the surface of the piston. The piston and piston cylinder are constructed of self-lubricating materials. The cylinder block is connected to a base plate which has inlet and outlet ports and as the piston reciprocates in the piston chamber, a single port communicating with the piston chamber shifts between the intake and exhaust ports to provide the pumping action.

REFERENCES:
patent: 1088608 (1914-02-01), Mitchell
patent: 3059586 (1962-10-01), Brailsford
patent: 3242869 (1966-03-01), Komhyr
patent: 3289916 (1966-12-01), Hogg et al.

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