公开(公告)号：US11654815B2

公开(公告)日：2023-05-23

申请号：US17164512

申请日：2021-02-01

Applicant: Caterpillar Inc.

Inventor： Edward William Mate ,  William N. O'Neill ,  Dennis William Dicker

IPC: F15B11/04 ,  B60P1/16 ,  G05D7/01

CPC classification number: B60P1/162 ,  F15B11/04 ,  G05D7/014 ,  F15B2211/30505 ,  F15B2211/3111 ,  F15B2211/3127 ,  F15B2211/3144 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/7053 ,  F15B2211/7741

Abstract: A valve for controlling a hydraulic cylinder on a work machine may include a raising position configured for placing a pump in fluid communication with a cap end of the hydraulic cylinder. The valve may also include closed center position configured for closing off fluid communication to the cap end line and the rod end line. The valve may also include a lowering position configured for placing the pump in fluid communication with the rod end of the hydraulic cylinder. The valve may also include a snubbing position configured for placing the cap end in restricted flow fluid communication with the tank and for placing the rod end in restricted flow fluid communication with the tank.

公开(公告)号：US20220242295A1

公开(公告)日：2022-08-04

申请号：US17164512

申请日：2021-02-01

Applicant: Caterpillar Inc.

Inventor： Edward William Mate ,  William N. O'Neill ,  Dennis William Dicker

IPC: B60P1/16 ,  G05D7/01

Abstract: A valve for controlling a hydraulic cylinder on a work machine may include a raising position configured for placing a pump in fluid communication with a cap end of the hydraulic cylinder. The valve may also include closed center position configured for closing off fluid communication to the cap end line and the rod end line. The valve may also include a lowering position configured for placing the pump in fluid communication with the rod end of the hydraulic cylinder. The valve may also include a snubbing position configured for placing the cap end in restricted flow fluid communication with the tank and for placing the rod end in restricted flow fluid communication with the tank.