Piston and bearing assemblies

Details Piston and bearing assemblies Piston and bearing assemblies

1991-06-11

1992-05-12

Footland, Lenard A.

Bearings

Rotary bearing

Plain bearing

384255, F16C 3304

Patent

active

051121450

ABSTRACT:
A prefinished piston pin insert bearing wherein the radial clearances required for acceptable bearing function are maintained in spite of the tolerance required for assembly through a combination of inner bearing surface geometry and related structure for retaining the bearing against axial and rotational movement. The interior bearing geometry is formed of radii equal to that of the piston pin which are offset vertically into the upper and lower bearings to generate a load bearing surface thereon and of radii offset horizontally and of sufficient length to provide assembly clearance for the piston pin and a load bearing surface of approximately 120.degree. to 150.degree.. The bearings are retained against movement through connections with the piston head, the piston skirt, and between the various bearing pieces. Means are also provided for feeding oil under pressure to the piston pin and bearing interface for lubrication and to the piston assembly for cooling.

REFERENCES:
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patent: 2850340 (1958-09-01), Brill
patent: 2990226 (1961-06-01), Fangman
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patent: 3555972 (1971-01-01), Hulsing
patent: 3680932 (1972-08-01), Raimondi
patent: 3762389 (1973-10-01), Malina
patent: 3789743 (1974-02-01), Sihon
patent: 3830552 (1974-08-01), Schuller et al.
patent: 3859976 (1975-01-01), McWhorter
patent: 3943908 (1976-03-01), Kubis et al.
patent: 4311349 (1982-01-01), Roberts
patent: 4359933 (1982-11-01), Fricke
patent: 4644853 (1987-02-01), Russell et al.

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