Valve drive device
Number of patents in Portfolio can not be more than 2000
United States of America
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-
Mar 8, 2022
Grant Date -
Jun 4, 2020
app pub date -
Dec 2, 2019
filing date -
Dec 2, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A valve drive device comprising a valve body drive mechanism including a drive gear, a driven gear for turning the valve body, and a power transmission switching part provided with a protruded part of the drive gear and a turning restriction part turnably attached to the driven gear. The turning restriction part comprises a lever part urged with an urging force toward an outer side of the driven gear. The driven gear comprises a lever turning restriction part for restricting turning of the lever part and the lever part is structured to perform a contact operation with the protruded part and a separating operation separated from a contact position with the lever turning restriction part. The valve body drive mechanism further comprises a foreign matter entry restraining part which covers at least a part of a region formed between the lever part and the lever turning restriction part.
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