Wrist pin construction

Details Wrist pin construction Wrist pin construction

1994-08-24

1996-08-06

Ryznic, John E.

Expansible chamber devices

Piston

With separable means for pivotally mounting connecting rod...

F16J 114

Patent

active

055423418

ABSTRACT:
A wrist pin for use with a piston of a refrigeration compressor unit, wherein the wrist pin is to be mounted on a piston and non-rotatively affixed thereto, the pin having a longitudinal axis, a round cross-section and a uniform diameter over substantially its entire length to provide a peripheral journal surface adapted to be mounted within and juxtaposed the bearing surface of a wrist pin bore of a connecting rod for rocking motion within the bore, one or more oil transport grooves in the journal surface circumscribing the same within a longitudinally central region thereof, a generally longitudinally extending recess in the journal surface extending across the one or more grooves and to either side thereof within the region, the region of the journal surface being dimensioned to lie totally within the wrist pin bore of the connecting rod, the recess laterally encompassing an arc angle of from about 6.degree. to about 30.degree..

REFERENCES:
patent: 2069594 (1937-02-01), Schneider
patent: 2823085 (1958-02-01), Keylwert
patent: 2860614 (1958-11-01), Burnand
patent: 3745889 (1973-07-01), Hill et al.
patent: 4005686 (1977-02-01), Wizemann et al.
patent: 4013057 (1977-03-01), Guenther
patent: 4550647 (1985-11-01), Coulin

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