公开(公告)号：US3386344A

公开(公告)日：1968-06-04

申请号：US58324366

申请日：1966-09-30

Applicant: CATERPILLAR TRACTOR CO

Inventor： JUNCK JOHN A ,  JOSEPH KOKALY ,  SCHEIDT JAMES E

IPC: E02F3/65 ,  E02F9/22 ,  F15B11/17

CPC classification number: E02F3/651 ,  E02F9/2203 ,  E02F9/2292 ,  F15B11/17 ,  F15B2211/20538 ,  F15B2211/20584 ,  F15B2211/30595 ,  F15B2211/324 ,  F15B2211/7142 ,  F15B2211/78

公开(公告)号：US3483890A

公开(公告)日：1969-12-16

申请号：US3483890D

申请日：1967-06-15

Applicant: CATERPILLAR TRACTOR CO

Inventor： OLDENBURG DORRANCE ,  SCHEIDT JAMES E ,  SHOOK DONALD L

IPC: E02F3/42 ,  E02F3/43 ,  F15B11/16 ,  F15B13/06 ,  F15B13/08 ,  F16K51/00

CPC classification number: E02F3/432 ,  E02F3/422 ,  F15B11/16 ,  F15B13/06 ,  F15B13/08 ,  F15B2211/30505 ,  F15B2211/3116 ,  F15B2211/324 ,  F15B2211/615 ,  F15B2211/71 ,  F15B2211/781 ,  Y10T137/87177

公开(公告)号：US3472127A

公开(公告)日：1969-10-14

申请号：US3472127D

申请日：1967-12-12

Applicant: CATERPILLAR TRACTOR CO

Inventor： SCHEIDT JAMES E

IPC: E02F9/22 ,  F15B11/08 ,  F15B13/01 ,  F15B15/18

CPC classification number: E02F9/22 ,  E02F9/2203 ,  F15B11/08 ,  F15B2211/3127 ,  F15B2211/50518 ,  F15B2211/5154

公开(公告)号：US2971536A

公开(公告)日：1961-02-14

申请号：US74472158

申请日：1958-06-26

Applicant: CATERPILLAR TRACTOR CO

Inventor： JUNCK JOHN A ,  SCHEIDT JAMES E

IPC: F15B13/04 ,  F16K11/07

CPC classification number: F15B13/04 ,  F16K11/0708 ,  Y10T137/8671

公开(公告)号：US3903787A

公开(公告)日：1975-09-09

申请号：US46356174

申请日：1974-04-24

Applicant: CATERPILLAR TRACTOR CO

Inventor： KROTH NEIL W ,  LOHBAUER KENNETH R ,  SCHEIDT JAMES E

IPC: E02F3/84 ,  E02F9/22 ,  F15B11/02 ,  F15B13/04 ,  F15B11/08

CPC classification number: E02F9/2267 ,  E02F3/84 ,  E02F9/2271 ,  E02F9/2285 ,  F15B11/02 ,  F15B13/0417 ,  F15B2211/20538 ,  F15B2211/30525 ,  F15B2211/31576 ,  F15B2211/324 ,  F15B2211/50536 ,  F15B2211/5157 ,  F15B2211/523 ,  F15B2211/528 ,  F15B2211/55 ,  F15B2211/57 ,  F15B2211/6051 ,  F15B2211/6054 ,  F15B2211/6055 ,  F15B2211/6355 ,  F15B2211/7053 ,  F15B2211/76 ,  Y10T137/87177

Abstract: A fluid control circuit for regulating fluid flow between a pressurized fluid source and a hydraulic motor, including a control valve having a movable spool for communicating fluid entering an inlet chamber from the source with service chambers in communication with the motor, a dump valve limiting communication of the inlet chamber with a drain in response to spring means and fluid communicated to the dump valve through a passage open to either of the service chambers when it is placed in communication with the inlet chamber by the control valve spool, the passage otherwise communicating the dump valve with a drain so that fluid communication between the inlet chamber and drain is limited only by the spring means. The force of the spring means may also be varied in certain embodiments of the invention. During operation of a second hydraulic motor by an additional control valve in communication with the inlet chamber, the dump valve is conditioned to provide pressure modulation in the inlet chamber by means of a bypass valve responsive to the additional control valve.

公开(公告)号：US3584698A

公开(公告)日：1971-06-15

申请号：US3584698D

申请日：1968-07-23

Applicant: CATERPILLAR TRACTOR CO

Inventor： LARSON ROBERT V ,  SCHEIDT JAMES E ,  STAHL SEBALD K

IPC: B60K17/10 ,  B60K17/356 ,  B60K25/00 ,  B62D59/00

CPC classification number: B60K17/10 ,  B60K17/356

Abstract: A hydrostatic assist for driving the normally nondriven wheels of a vehicle in which the hydrostatic assist is controlled by slip in the drive train or the driven wheels for better tractive effort and most efficient operation. The slip sensed for control may be the slip between the normally driven wheels and the ground or the slip in a nonpositive coupling portion of the drive line between the vehicle engine and the driven wheels and controls the power which is supplied to the nondriven wheels through a hydrostatic loop.

公开(公告)号：US3198212A

公开(公告)日：1965-08-03

申请号：US28241863

申请日：1963-05-22

Applicant: CATERPILLAR TRACTOR CO

Inventor： JUNCK JOHN A ,  SCHEIDT JAMES E

IPC: F16K11/07

CPC classification number: F16K11/0708 ,  Y10T137/8671 ,  Y10T137/86791

公开(公告)号：US3184920A

公开(公告)日：1965-05-25

申请号：US28742463

申请日：1963-06-12

Applicant: CATERPILLAR TRACTOR CO

Inventor： LOHBAUER KENNETH R ,  SCHEIDT JAMES E

IPC: E02F3/84 ,  F15B13/01

CPC classification number: F15B13/01 ,  E02F3/7618 ,  E02F3/844

公开(公告)号：US3150685A

公开(公告)日：1964-09-29

申请号：US26012463

申请日：1963-02-21

Applicant: CATERPILLAR TRACTOR CO

Inventor： LOHBAUER KENNETH R ,  SCHEIDT JAMES E

IPC: F15B13/02

CPC classification number: F15B13/02 ,  Y10T137/7766 ,  Y10T137/86726 ,  Y10T137/87185

公开(公告)号：US3127688A

公开(公告)日：1964-04-07

申请号：US24705662

申请日：1962-12-26

Applicant: CATERPILLAR TRACTOR CO

Inventor： HEIN ALLYN J ,  SCHEIDT JAMES E

IPC: E02F3/64 ,  E02F3/65 ,  F15B13/01

CPC classification number: E02F3/652 ,  E02F3/64 ,  E02F3/6481 ,  E02F3/651 ,  F15B13/01