公开(公告)号：US3630120A

公开(公告)日：1971-12-28

申请号：US3630120D

申请日：1970-05-04

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C ,  BRUDNAK ANDREW JR ,  YEH RUDOLPH E ,  SARDIGA RONALD F

IPC: E02F9/02 ,  E02F9/08 ,  F15B11/20 ,  F15B11/16

CPC classification number: F15B11/20 ,  E02F9/024 ,  E02F9/0841

Abstract: An apparatus for converting rectilinear motion to rotational motion about a first axis having two pivotal members fixed about and rotatable with respect to each other and to the first axis, two hydraulic motors interconnected between said pivotal members, a source of fluid power supply connected to each hydraulic motor by conduit means, directional flow control means for selectively delivering fluid power to the hydraulic motors, sequence valve means for sensing the position of the hydraulic motors and for directing flow to aid in obtaining a relatively constant torque output and angular velocity, bleeder valve means for reducing hydraulic input energy when the pivotal member is near the end of its rotation and for maintaining a maximum velocity potential throughout the rotational movement, and relief valve means for additionally controlling torque output.