Lubricating-oil pump control
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United States of America Patent
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-
Nov 6, 1990
Grant Date -
N/A
app pub date -
May 31, 1988
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 and an oil supply for a work tool and to apparatus for varying the reciprocatory stroke distance of the oil piston or pumping member to thereby provide selective regulation of oil flow from full flow to through no flow in response to the stroke distance of the pumping member.
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