Internal-combustion engines – Lubricators – Crankcase – pressure control
Reexamination Certificate
2002-09-30
2004-06-01
Argenbright, Tony M. (Department: 3747)
Internal-combustion engines
Lubricators
Crankcase, pressure control
C184S012000, C184S106000
Reexamination Certificate
active
06742490
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to an oil pickup tube assemblies for internal combustion engines, including but not limited to mounting of oil pickup tube assemblies within an oil pan of an internal combustion engines.
BACKGROUND OF THE INVENTION
Known engine oil pickup tubes, such as that shown in
FIG. 1
, include an assembly comprising a flange
103
brazed to one end of a tube
101
and a suction end
107
at the other end of the tube
101
. The flange
103
has one or more holes
105
through which bolts attach to the oil pump inlet of the engine near the top of the oil pan. The tube curves downwardly such that the suction end is located near the bottom of the oil pan. The tube is thus suspended from the lower portion of the engine crank case or oil pump inlet.
Because of the nature of the design of such oil pickup tubes, engine vibration and other environmental conditions may cause the tube
101
to cantilever from its flange
103
, causing cracks in the flange
103
and/or the brazed joint
109
and/or the tube
101
itself. These cracks result in leakage that reduces oil pressure. When oil pressure is reduced significantly, the engine may not operate or may suffer severe wear.
Accordingly, there is a need for a method of mounting an engine oil pickup tube that is not as susceptible to engine vibration or other environmental conditions.
SUMMARY OF THE INVENTION
An oil pickup tube assembly comprises an oil pickup tube having a first end and a second end. A bracketed flange mounting comprises a flange disposed near the first end of the oil pickup tube and having a flange extension and a bracket having a first end in connection with the flange extension and a second end mounted at an area of the oil pickup tube between the first end and the second end.
REFERENCES:
patent: 4479463 (1984-10-01), Curley et al.
patent: 5887565 (1999-03-01), Ozeki et al.
patent: 5988134 (1999-11-01), Smietanski
patent: 6142257 (2000-11-01), Bruener et al.
Argenbright Tony M.
Calfa Jeffrey P.
Harris Katrina B.
International Engine Intellectual Property Company LLC
Lukasik Susan L.
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