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Title:
CYLINDER TUBE, HYDRAULIC CYLINDER WITH SAME, AND METHOD OF MANUFACTURING CYLINDER TUBE
Document Type and Number:
WIPO Patent Application WO/2010/055764
Kind Code:
A1
Abstract:
A cylinder tube (11) for a hydraulic cylinder (10) is provided with welding beads (22a, 22b) functioning as rigidity change sections in which cross-sectional rigidity changes.  The rigidity change sections are located, in a cross-sectional view of the cylinder tube, at positions spaced apart in the circumferential direction to the left and right from port holes (11a, 11b) formed in the outer peripheral surface of the cylinder tube.

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Inventors:
YANO KOUZOU (JP)
Application Number:
PCT/JP2009/068354
Publication Date:
May 20, 2010
Filing Date:
October 26, 2009
Export Citation:
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Assignee:
KOMATSU MFG CO LTD (JP)
YANO KOUZOU (JP)
International Classes:
F16J10/02; F15B15/14
Foreign References:
JPS4812027B11973-04-17
JPS6128740A1986-02-08
JPS6264442A1987-03-23
JP2000291607A2000-10-20
Attorney, Agent or Firm:
Shinjyu Global IP (JP)
fresh green -- a global IP patent business corporation (JP)
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