Four-state adjustable air path structure
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United States of America Patent
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Aug 29, 2017
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app pub date -
Dec 26, 2014
filing date -
Feb 14, 2014
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Abstract
This invention relates to a four-state adjustable air path structure. An air source is connected to an air storage tank and a first two-position three-way solenoid valve via a check valve. The first two-position three-way solenoid valve is connected to a second two-position three-way solenoid valve and a vent hole. The second two-position three-way solenoid is connected to a third two-position three-way solenoid valve and a port of a throttle valve. Another port of the throttle valve is connected to the third two-position three-way solenoid valve. The third two-position three-way solenoid valve is connected to an air tank. The present four-state adjustable air path structure simplifies processing and maintenance of a mechanical structure. Intellectual control of an operating speed can also be achieved. The present invention has advantages such as structural simplicity, low manufacturing costs, safe and reliable operation, long service life, and suitability for long-distance transmission.
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