Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 29, 2015
Patent Application Number
14005398
Date Filed
February 24, 2012
Patent Citations Received
Patent Primary Examiner
Patent abstract
A cylinder unit includes a cylinder, a rod guide, a piston, a piston rod, and a rebound member provided between the rod guide and the piston to absorb impact generated when the cylinder unit is fully extended. The rebound member includes a coil spring arranged around an outer circumference of the piston rod and a pair of upper and lower holder members fitted to the fixing portions formed in both ends of the coil spring so that the piston rod is inserted into a shaft center hole. The center portion formed between the fixing portions of the coil spring has a diameter smaller than that of the fixing portion.
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