Suction conduit switching apparatus and endoscope

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9717395
APP PUB NO 20150216394A1
SERIAL NO

14613138

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A piston is inserted into a piston passage of a cylinder. The piston is displaced between a first position of a non-contact state and a second position by a pressing operation. At the first position, a suction source connection port of the cylinder faces a circumferential groove of the piston and a suction source conduit communicates with an outside atmosphere. At the second position, the suction source connection port faces an outer peripheral surface opening and the suction source conduit communicates with a suction connection port. A V-shaped opening portion as a correction opening portion is formed in the outer peripheral surface opening. The V-shaped opening portion causes an increment of a communication opening width at which the suction source connection port overlaps with the outer peripheral surface opening to be three times or less an increment of a pressing stroke of the piston.

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Patent Owner(s)

  • FUJIFILM CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Toyoda, Yusuke Ashigarakami-gun, JP 20 83

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