公开(公告)号：US3508385A

公开(公告)日：1970-04-28

申请号：US3508385D

申请日：1967-10-30

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C

IPC: A01D34/00 ,  A01D35/26

CPC classification number: A01D34/005 ,  A01D2101/00

公开(公告)号：US2842266A

公开(公告)日：1958-07-08

申请号：US51536655

申请日：1955-06-14

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C

IPC: B07B1/24

CPC classification number: B07B1/24

公开(公告)号：US2842139A

公开(公告)日：1958-07-08

申请号：US51536755

申请日：1955-06-14

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C

IPC: B02B3/04

CPC classification number: B02B3/04

公开(公告)号：US2827747A

公开(公告)日：1958-03-25

申请号：US51656855

申请日：1955-06-20

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C ,  HUDDLE EDWIN F

IPC: A01D34/28

CPC classification number: A01D34/283

公开(公告)号：US3698580A

公开(公告)日：1972-10-17

申请号：US3698580D

申请日：1969-12-22

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C ,  HOWELLS ARTHUR J JR ,  JENNINGS MARVIN D ,  EASTMAN DONALD R ,  SHEETS EDWARD G

IPC: E02F9/22 ,  E02F3/28

CPC classification number: E02F9/22 ,  Y10T74/20201

Abstract: A control system for a hydraulic motor actuated material handling mechanism including a source of fluid power, a directional flow control valve interposed between the source of fluid power and the hydraulic motor, a bridge circuit including a source of electrical energy and having a first variable impedance branch varied by a command control lever and a second variable impedance branch associated with the flow control valve, comparator means connected to the output of the bridge circuit for detecting and amplifying an unbalance in the bridge circuit and means interconnected between the comparator and the directional flow control valve for controlling said valve in a manner corresponding to command movement of the variable impedance branch.

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.

公开(公告)号：US3139718A

公开(公告)日：1964-07-07

申请号：US18650462

申请日：1962-04-10

Applicant: INT HARVESTER CO

Inventor： RICKERD CALVIN P ,  FISCHER RAYMOND C ,  CARLSON ERNEST C

IPC: A01D65/00 ,  A01D75/00

CPC classification number: A01D75/00 ,  A01D65/00

公开(公告)号：US2952466A

公开(公告)日：1960-09-13

申请号：US65602057

申请日：1957-04-30

Applicant: INT HARVESTER CO

Inventor： CARLSON ERNEST C ,  HENNINGSEN ETLAR A ,  SCHMIED WILLIAM F

IPC: A01C3/06

CPC classification number: A01C3/06

公开(公告)号：US2664690A

公开(公告)日：1954-01-05

申请号：US26049651

申请日：1951-12-07

Applicant: INT HARVESTER CO

Inventor： HUDDLE EDWIN F ,  CARLSON ERNEST C

IPC: A01D34/135

CPC classification number: A01D34/135