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Patent Searching and Data


Title:
COOLING STRUCTURE FOR CYLINDER BLOCK AND SWASH PLATE-TYPE HYDRAULIC DEVICE EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2012/066593
Kind Code:
A1
Abstract:
Provided is a cooling structure for a cylinder block (12) with which the cooling characteristic for a sliding surface can be improved. The cylinder block (12) has multiple cylinders (20), and pistons are inserted into these cylinders (20) from apertures. The pistons (13) slide in a reciprocating manner above a sliding surface (12b) that defines the cylinders (20). In addition, multiple grooves (31) for cooling are formed in the outer circumferential surface (12a) of the cylinder block (12). The cooling grooves (31) extend from the front end face to the partition walls (32) between two adjacent cylinders (20), and are formed by reducing the thickness of the partition walls (32) so as to reduce the thickness t between the sliding surface (12b) and the outer circumferential surface (12a).

Inventors:
OHNO TAKESHI
AZUMA MAKOTO
Application Number:
PCT/JP2010/006721
Publication Date:
May 24, 2012
Filing Date:
November 16, 2010
Export Citation:
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Assignee:
KAWASAKI HEAVY IND LTD (JP)
OHNO TAKESHI
AZUMA MAKOTO
International Classes:
F04B53/08; F03C1/253; F04B1/22; F04B53/16
Foreign References:
JP2001059561A2001-03-06
JPS54102710U1979-07-19
JP2010180890A2010-08-19
JPS61145882U1986-09-09
JP2010174690A2010-08-12
Other References:
See also references of EP 2642123A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
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Claims: