公开(公告)号：US3556155A

公开(公告)日：1971-01-19

申请号：US3556155D

申请日：1969-01-24

Applicant: CATERPILLAR TRACTOR CO

Inventor： MCWILLIAMS ORCENITH D ,  WAGGONER JOHN B

IPC: F16K3/32 ,  B62D5/087 ,  B62D5/09 ,  F16K11/07 ,  F15D1/04 ,  F16K5/10

CPC classification number: F16K11/0708 ,  B62D5/087 ,  B62D5/09 ,  Y10T137/8671 ,  Y10T137/86734

Abstract: A control valve particularly adapted to vehicle steering by hydraulic pressure wherein source pressure is communicated through slots in a spool valve to a hydraulic steering motor and which slots of various size and configuration are arranged to provide slow or gradual steering upon initial turning of a steering wheel and more rapid steering as turning of the wheel progresses. The slot configuration also insures that the lines in the steering system between the valve and the motor are constantly fully charged with hydraulic fluid to prevent the undesirable results of air in the system.

公开(公告)号：US3865135A

公开(公告)日：1975-02-11

申请号：US40430973

申请日：1973-10-09

Applicant: CATERPILLAR TRACTOR CO

Inventor： MCWILLIAMS ORCENITH D ,  RICE ROGER A

IPC: B62D53/02 ,  B60D1/00 ,  F16K11/00

CPC classification number: B62D53/021 ,  Y10T137/87193 ,  Y10T137/87225

Abstract: A hydraulic control valve including a valve body having an inlet port, first and second outlet ports and a return port with a first movable valve element for selectively and alternately communicating the inlet port with the first outlet port and the return port and a second movable valve element for selectively controlling communication between the first and second outlet ports and a third movable valve element for selectively controlling communication of the second outlet port with the return port when communication between the outlet ports is blocked.

Abstract translation: 一种液压控制阀，包括具有入口端口的阀体，第一和第二出口端口以及具有用于选择性地并且交替地将入口与第一出口和返回端口连通的第一可移动阀元件的返回端口和第二可移动阀 元件，用于选择性地控制第一和第二出口之间的连通;以及第三可移动阀元件，用于当出口之间的连通被阻塞时，选择性地控制第二出口与回流口的连通。