Retainer for piston head subassembly and method of retaining pis

Details Retainer for piston head subassembly and method of retaining pis Retainer for piston head subassembly and method of retaining pis

1991-01-04

1992-01-14

Bertsch, Richard A.

Pumps

Expansible chamber type

Valved piston

417552, 13751621, 92255, 92 59, F04B 2104

Patent

active

050805657

ABSTRACT:
The present invention is a retainer for a piston and valve subassembly of a scotch yoke compressor and a method of assembling it. The subassembly is comprised of a piston head, a suction valve, a spacer, a stop washer, and a rod held together by a retainer. The suction valve is assembled on the rod, then the rod is inserted into the piston head. Next the retainer is installed on an end of the rod for frictionally engaging the piston and rod, thus axially securing the suction valve and the rest of the piston head subassembly during assembly to the yoke.

REFERENCES:
patent: 4594760 (1986-06-01), Dillard
patent: 4834632 (1989-05-01), Gatecliff et al.

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