Locking mechanism for valve device
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United States of America Patent
Stats
-
Jan 14, 2014
Grant Date -
Oct 4, 2012
app pub date -
Mar 30, 2012
filing date -
Mar 31, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed herein is a locking mechanism for a valve device having a valve body for retaining the valve body at a predetermined opened position, including: a disk having a rotational shaft rotatable together with a valve body driving shaft and having a cutout groove formed on an outer circumferential face thereof; a ball disposed in the cutout groove; a body member having an axial direction restriction face and an inner circumferential face; a holder member having an engaging face which has a diameter gradually decreasing toward the ball and is engageable with the ball; and a spring member biasing the holder member toward the ball, wherein said ball is clamped by and among the engaging face which is acted upon by the biasing force of said spring member, the axial direction restriction face and the inner circumferential face so that a rotational direction position of the rotational shaft is retained.
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