Solenoid device
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United States of America Patent
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Jun 21, 2016
Grant Date -
Oct 1, 2015
app pub date -
Feb 27, 2015
filing date -
Mar 28, 2014
priority date (Note) -
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Abstract
A solenoid device includes a plunger driven in an axial direction, a wall portion arranged to oppose the plunger in the axial direction, and a respiratory pore cover covering an opening of a respiratory pore of the wall portion. A volume variable chamber is defined between the plunger and the wall portion. The respiratory pore cover defines a communication space communicated to the respiratory pore, and an opening which causes the communication space to communicate with an exterior space. A volume of the communication space is larger than a predetermined volume of fluid that flows through the respiratory pore from or into the volume variable chamber by a predetermined movement of the plunger.
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