Piston apparatus

Details Piston apparatus Piston apparatus

2005-12-28

2009-12-01

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

With lubricating means

Lubricant passage extends axially through articulated piston...

C092SDIG001

Reexamination Certificate

active

07624672

ABSTRACT:
In order to decrease internal friction of a heat engine that converts a reciprocating motion of a piston into a rotational motion, a piston apparatus (1) forms an air bearing between a crankshaft (30) and a bearing unit (9B) provided in a crankcase (9) and between an eccentric portion (30c) of the crankshaft (30) and a large end portion (201) of a connecting rod (20) by feeding a gas therebetween from a crank-side hollow portion (31) of the crankshaft (30). The piston apparatus1also forms an air bearing between a piston pin (40) and a small end portion (202) of the connecting rod (20) by feeding a gas therebetween from a piston pin-side hollow portion (43) in the piston pin (40).

REFERENCES:
patent: 5039285 (1991-08-01), Lindstrom
patent: 6016738 (2000-01-01), Elferink et al.
patent: A-64-087853 (1989-03-01), None
patent: A 06-272708 (1994-09-01), None
patent: A 07-224807 (1995-08-01), None
patent: A-2000-046431 (2000-02-01), None
patent: A 2002-323008 (2002-11-01), None
patent: A 2002-349347 (2002-12-01), None

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