Engine lubricating device

Details Engine lubricating device Engine lubricating device

2006-04-04

2006-04-04

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Lubricators

Crankcase, pressure control

Reexamination Certificate

active

07021266

ABSTRACT:
An engine lubrication system having a lubricating oil pump that is rotationally driven by a crankshaft to send under pressure a lubricating oil to a part needing to be lubricated. The lubricating oil pump is connected to an end of a crankshaft such that a pump shaft aligns with the crankshaft substantially coaxially. An in-pump oil supply passageway is formed in the lubricating oil pump to pass therethrough from a side opposite the crankshaft to a side of the crankshaft. The in-pump oil supply passageway communicates at one end with an in-crankshaft oil supply passageway formed in the crankshaft for supplying a lubricating oil to a part of the crankshaft and at the other end with a discharge port of the lubricating oil pump via a lubricating oil passageway.

REFERENCES:
patent: 5218885 (1993-06-01), Nakano et al.
patent: 4-76209 (1992-03-01), None
patent: 5-52205 (1993-07-01), None
patent: 8-21222 (1996-01-01), None
patent: 10-339124 (1998-12-01), None

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