Invention Grant
- Patent Title: Piston of axial piston pump motor, cylinder block of axial piston pump motor, and axial piston pump motor
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Application No.: US14420560Application Date: 2014-02-20
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Publication No.: US09964211B2Publication Date: 2018-05-08
- Inventor: Isamu Yoshimura , Ryo Nomura , Hisao Wada , Ryuji Sakai
- Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
- Applicant Address: JP Kobe-shi
- Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
- Current Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
- Current Assignee Address: JP Kobe-shi
- Agency: Oliff PLC
- Priority: JP2013-085826 20130416
- International Application: PCT/JP2014/054003 WO 20140220
- International Announcement: WO2014/171178 WO 20141023
- Main IPC: F16J1/09
- IPC: F16J1/09 ; F04B27/08 ; F04B1/12 ; F04B1/22 ; F04B53/14 ; F03C1/28 ; F04B39/12 ; F01B3/00
Abstract:
An end part of a piston on a front edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 10% or more and 80% or less of a length of a cylindrical part and a height is 10% or more and 160% or less of a clearance. An end part of a cylinder block on a front edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 8% or more and 60% or less of the length of a cylindrical part and a height is 12% or more and 125% or less of the clearance.
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