Extension device and tripod
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United States of America Patent
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Jun 28, 2011
Grant Date -
Apr 16, 2009
app pub date -
Mar 18, 2008
filing date -
Mar 19, 2007
priority date (Note) -
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Abstract
An extension device includes the first tubular member, the second tubular member movably inserted into the first tubular member, and the third tubular member movably inserted into the second tubular member and a regulating device that regulates movement of the third tubular member with respect to the second tubular member. The regulating device includes a regulating member protruding from the inner hole portion to the outside of the third tubular member band is brought in the outer hole portion, and a pressing member for pressing the regulating member in the protruding direction.
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