公开(公告)号：US3495802A

公开(公告)日：1970-02-17

申请号：US3495802D

申请日：1967-10-09

Applicant: ASEA AB

Inventor： FRYKLUND PER

IPC: F16K7/00 ,  F16L55/10 ,  F16J15/46 ,  F16K31/12

CPC classification number: F16K7/00 ,  F16L55/10

公开(公告)号：US3592105A

公开(公告)日：1971-07-13

申请号：US3592105D

申请日：1969-07-17

Applicant: ASEA AB

Inventor： FRYKLUND PER

IPC: F01B3/00 ,  F04B1/12 ,  F01B13/00 ,  F16J1/24

CPC classification number: F04B1/124 ,  F01B3/0052 ,  F01B3/0085

Abstract: A hydraulic energy converting device applicable to both pumps and motors, such devices employing an obliquely pivoted swash plate to interact with a spherical piston. The axial component of the force on the piston causes wear. This wear is minimized by providing a bowl-shaped piston with a ball-contacting seat and interposing a ball between the piston and the swash plate. Pressure-communicating arrangements in the piston permit fluid pressure and the ball to interact directly, minimizing the force of contact between ball and seat.