Oil pan structure for four-cycle engine

Details Oil pan structure for four-cycle engine Oil pan structure for four-cycle engine

2007-05-01

2007-05-01

Fenstermacher, David M. (Department: 3682)

Lubrication

Lubricators

Drip pans

C123S1960AB

Reexamination Certificate

active

10618422

ABSTRACT:
An oil pan structure for a four-cycle engine, in which oil stored in an oil pan is sucked up by an oil pump through an oil strainer and in which oil lubrication is performed by supplying the sucked oil again to each of parts of the engine to be lubricated. In this oil pan structure, a bottom portion of the oil pan is formed nearly like a bowl by being swelled to a side, which is opposite to a crankcase, from an attaching peripheral portion, to which a crankcase lower-part is attached, toward a central portion thereof. An oil pan cover covering a part of the bottom portion is separately provided thereon. Oil passages and are formed from the oil pan cover and the bottom portion. An oil introduction opening portion and an oil suction opening portion82are formed in the bottom portion.

REFERENCES:
patent: 5199395 (1993-04-01), Mizumura et al.
patent: 5544632 (1996-08-01), Choate
patent: 6058898 (2000-05-01), Freese, V
patent: 6237720 (2001-05-01), Sutton
patent: 2001/0037788 (2001-11-01), Okuda et al.
patent: 2004/0084250 (2004-05-01), Morii et al.
patent: 2001-193559 (2001-07-01), None

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