Compressed air supplying device of a sewing machine
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United States of America Patent
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Feb 6, 2018
Issued Date -
N/A
app pub date -
May 13, 2015
filing date -
Dec 5, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A compressed air supplying device of a sewing machine includes an air pump unit including a piston; a piston driving spring applying biasing force to the piston in an exhaust air direction which is a direction in which the air pump unit exhausts air for driving the piston in the exhaust air direction by the biasing force; a lever making the air pump unit perform intake air movements; and an operating force transmitting mechanism transmitting operating force of the lever to the piston for actuating the piston only in an intake air direction which is a direction in which the air pump unit intakes air against the biasing force of the piston driving spring by the operating force.
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