Title:
CYLINDER DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/092908
Kind Code:
A1
Abstract:
In order to enable the stroke of a piston rod (20) to be detected accurately even when used while immersed in water, a cylinder device is equipped with: a stroke detection unit (70), which is arranged in a storage chamber (30C) provided in a cylinder head (30) so as to open into a center hole (30a) of the cylinder head (30), and which outputs a detection signal in response to the stroke of the piston rod (20) with respect to the cylinder head (30); two bearing members (40A, 40B), which are arranged in the center hole (30a) of the cylinder head (30) in the longitudinal direction of the piston rod (20), so as to sandwich therebetween the storage chamber (30C); and a sealing system (50B), which is formed in the center hole (30a) of the cylinder head (30) at the location which is at the tip-end side of the piston rod (20). The piston rod (20) is supported in the cylinder head (30) via the two bearing members (40A, 40B).
Inventors:
ISOBE DAISAKU (JP)
SATOU ATSUSHI (JP)
HAYAKAWA JUMPEI (JP)
SATOU ATSUSHI (JP)
HAYAKAWA JUMPEI (JP)
Application Number:
PCT/JP2013/084150
Publication Date:
June 25, 2015
Filing Date:
December 19, 2013
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
F15B15/28
Foreign References:
| JPS6240308U | 1987-03-10 | |||
| JPS60177303U | 1985-11-25 | |||
| JP2011144934A | 2011-07-28 | |||
| JP2009174555A | 2009-08-06 | |||
| JP2007333626A | 2007-12-27 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
Download PDF:
Previous Patent: DRIVE DEVICE
Next Patent: POLYMERIC COMPOUND, ORGANIC PHOTOELECTRIC CONVERSION ELEMENT, AND METHOD FOR PRODUCING SAID ELEMENT
Next Patent: POLYMERIC COMPOUND, ORGANIC PHOTOELECTRIC CONVERSION ELEMENT, AND METHOD FOR PRODUCING SAID ELEMENT