Internal-combustion engines – Lubricators – Crankcase – pressure control
Reexamination Certificate
2005-01-04
2005-01-04
Arganbright, Tony M. (Department: 3747)
Internal-combustion engines
Lubricators
Crankcase, pressure control
C184S006500
Reexamination Certificate
active
06837210
ABSTRACT:
An oil feed pump for feeding oil in an oil tank to an engine, an oil recovery pump for feeding oil in a crankcase into the oil tank, an oil drain pipe connected to the lower portion of the crankcase and extending upward, and an opening provided on top of the oil tank are provided in a lubrication system. An opening of the oil drain pipe opens at the position upward of the oil level in the crankcase at a moment when the oil in the oil tank is returned into the crankcase. A cap is provided with a dip stick. The engine can be mounted on a small planing boat with the crankshaft oriented in the fore-and-aft direction. The oil tank is integrally formed with the front portion of the engine so as to be elongated in the vertical direction and is formed with the opening on top.
REFERENCES:
patent: 5097894 (1992-03-01), Cassia
patent: 5467746 (1995-11-01), Waelput et al.
patent: 6223713 (2001-05-01), Moorman et al.
patent: 11-93634 (1999-04-01), None
Hoi Yosuke
Noda Yoshiaki
Tsuchiya Masahiko
Ali Hyder
Arganbright Tony M.
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