公开(公告)号：US11262768B2

公开(公告)日：2022-03-01

申请号：US16758718

申请日：2019-03-22

Applicant: KYB Corporation

Inventor： Toshiyuki Kitani ,  Nobuyoshi Yoshida

IPC: F16K31/42 ,  G05D11/13

Abstract: A cap with electromagnetic proportional valve, includes a pilot cap mounted on a valve housing and defining a pilot chamber, and an electromagnetic proportional valve mounted on the pilot cap and adapted to control a pressure of a working fluid supplied to the pilot chamber. The pilot cap includes a supply port into which a working fluid of a fluid pressure supply source is supplied, a discharge port from which the working fluid is discharged to the tank, a primary pressure passage which leads the working fluid at a primary pressure to the electromagnetic proportional valve from the supply port, a secondary pressure passage which leads the working fluid whose pressure is reduced to a secondary pressure by the electromagnetic proportional valve to the pilot chamber, and a drain passage which leads the working fluid discharged from the electromagnetic proportional valve to the discharge port.

公开(公告)号：US11255354B2

公开(公告)日：2022-02-22

申请号：US16758198

申请日：2019-03-01

Applicant: KYB Corporation

Inventor： Toshiyuki Kitani

IPC: F15B13/04 ,  F16K11/07 ,  F15B11/08

Abstract: A control valve has a first and second pilot chambers facing both ends of a spool, a signal pressure passage configured to lead a pilot pressure of the first and second pilot chambers to another device other than the control valve as a signal pressure, a communication groove configured to allow the first pilot chamber and the signal pressure passage to communicate with each other, a communication hole configured to allow the second pilot chamber and the signal pressure passage to communicate with each other, and a check valve interposed in the communication hole, and the check valve has a poppet portion configured to open or close the communication hole and a spacer portion configured to regulate a moving amount of the poppet portion in an open direction, and the control valve further includes a movement regulating portion configured to regulate movement of the spacer portion toward the poppet portion.