Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshiki Takeuchi0
Hirofumi Sugimoto0
Kouichi Matsuda0
Seiji Kikuchi0
Toshiaki Iio0
Date of Patent
December 18, 2018
0Patent Application Number
148457450
Date Filed
September 4, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
An expansion/compression mechanism of a piston rod assembly is composed of a bush shaft, a first cylindrical piston rod that is screwed with the bush shaft, a second cylindrical piston rod that is screwed with the first piston rod, and a piston rod holding member for housing the bush shaft and these piston rods. Therefore, the piston rods move linearly in multiple stages.
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