Autolift-resistant piston assembly for an unloader valve of an air compressor
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United States of America Patent
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Jun 12, 2018
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app pub date -
Aug 7, 2015
filing date -
Aug 7, 2015
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Abstract
An autolift-resistant piston assembly is provided for an air compressor. The piston assembly comprises an unloader piston having an interior chamber. The piston assembly further comprises a first coil spring for biasing the unloader piston to a loaded position when the piston assembly is installed in the air compressor. The piston assembly also comprises an inner member disposed in the interior chamber of the unloader piston and including (i) a body portion, and (ii) a tapered end portion extending from the body portion and facing an unloader air passage of the air compressor when the piston assembly is installed in the air compressor.
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