Expansible chamber devices – With lubricating means – Lubricant passage extends axially through articulated piston...
Patent
1990-01-18
1991-12-17
Look, Edward K.
Expansible chamber devices
With lubricating means
Lubricant passage extends axially through articulated piston...
92187, 92189, 92208, 92216, 92220, 384286, 1231973, 74579E, F01B 3110
Patent
active
050726544
ABSTRACT:
A novel prefinished piston pin insert bearing is described wherein the tight radial clearances required for acceptable bearing function are maintained in spite of the tolerances required for assembly through a unique inner bearing surface geometry and through a unique methodology of bearing retention 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 and of radii of nonspecific size which are offset horizontally. 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.
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Denion Thomas
Detroit Diesel Corporation
Look Edward K.
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