Reciprocating machine with cylinder having collector groove
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United States of America Patent
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Sep 21, 2021
Grant Date -
Jul 20, 2017
app pub date -
Sep 29, 2014
filing date -
Sep 29, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A reciprocating machine incltides a cylinder including an internal cylinder wail, a piston movable in the cylinder between a top position and a. bottom position, the piston, comprising an upper ring pack and a lower ring pack disposed around a circumference of the piston and spaced from each other by a first distance, and a circumferential collector groove in the cylinder wall in a position that is above the lower ring pack when the piston is in the top position and that is below the upper ring pack when the piston is in the bottom position, the collector groove including at least” one hole eonneciabie to a conduit for comieciion to a sump. A helical groove can also be provided in the cylinder wall.
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