Lubricating - oil pump control
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United States of America Patent
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-
Jul 16, 1991
Issued Date -
N/A
app pub date -
Jan 23, 1990
filing date -
May 31, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is directed to a motor-driven apparatus such as a motor-driven chain saw and the like having a lubricating oil pump having a piston which rotates about its central axis and an oil supply for a work tool. There is also a control means containing a rotating piston having cam member on the piston interacting with a control pin member which acts as a cam follower. There is provided means for adjusting the percentage of contact made between the cam member and the cam follower per revolution of the pumping member.
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