Small internal combustion engine

Details Small internal combustion engine Small internal combustion engine

2006-09-25

2008-05-20

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Lubricators

Crankcase, pressure control

C184S006500

Reexamination Certificate

active

07373913

ABSTRACT:
A small internal combustion engine including a crankcase, a crankshaft rotatably mounted in an interior of the crankcase by crankshaft bearings of the crankcase, a first oil passage disposed below the crankshaft bearings to extend substantially in parallel with the crankshaft, the first oil passage being configured to feed lubricating oil to the crankshaft bearings, and a second oil passage disposed at a location higher than the first oil passage to extend substantially in parallel with the first oil passage, the second oil passage being configured to feed the lubricating oil to a component other than the crankshaft bearings.

REFERENCES:
patent: 4993378 (1991-02-01), Sakurahara et al.
patent: 6715460 (2004-04-01), Ashida et al.
patent: 7007648 (2006-03-01), Fujikubo
patent: 7093569 (2006-08-01), Nakatsuka et al.
patent: 7140934 (2006-11-01), Hoi
patent: 61-18166 (1986-06-01), None

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