High pressure spherical piston

Details High pressure spherical piston High pressure spherical piston

1978-12-29

1981-01-27

Maslousky, Paul E.

Expansible chamber devices

With lubricating means

Portion of expansible chamber device includes solid...

92172, 92248, F01B 3110, F16J 900

Patent

active

042468337

ABSTRACT:
A spherical piston for high-pressure applications. By shifting the o-ring oove to the pressure side of the major diameter of a spherical piston such that one edge of the groove is the major diameter, a very close fitting spherical piston that will not have metal to metal interference is created. Contrary to traditional spherical pistons, the spherical diameter of the present invention is less than the diameter of a cylinder wall. Elimination of metal to metal interference between the piston and the cylinder wall permits the piston to be made of harder metal than the cylinder wall without concern for damage if the piston cants on its axis within the cylinder.

REFERENCES:
patent: 2710137 (1955-06-01), Arnouil
patent: 2792790 (1957-05-01), Copps
patent: 2956845 (1960-10-01), Wahlmark
patent: 3035879 (1962-05-01), Hanny et al.
patent: 3181779 (1965-04-01), Rhodes
patent: 3320902 (1967-05-01), Paschke
patent: 3695150 (1972-10-01), Salzmann
patent: 3716310 (1973-02-01), Guenther

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