公开(公告)号：US11913567B2

公开(公告)日：2024-02-27

申请号：US17846382

申请日：2022-06-22

Applicant: CKD CORPORATION

Inventor： Takemoto Kondo ,  Kazuya Nakata ,  Shinji Itoh ,  Yosuke Eguchi ,  Kiyotoki Natsume ,  Ikuo Ogino

IPC: F16K31/06 ,  F16K27/00

CPC classification number: F16K31/0675 ,  F16K27/003

Abstract: An electromagnetic valve manifold includes valve assemblies arranged in a single direction, each valve assembly including electromagnetic valves arranged in the single direction, a slave station disposed at one of ends of the electromagnetic valve manifold in the single direction, and a valve driving unit disposed in correspondence with each of the valve assemblies. The slave station includes a slave station output port that sends a control signal and valve driving unit power to the valve driving units. The valve driving units each include an electromagnetic valve power input port that receives electromagnetic valve power from an external device and a circuit board configured to control driving of the electromagnetic valves of a corresponding one of the valve assemblies using the control signal and send the electromagnetic valve power to the electromagnetic valves.

公开(公告)号：US11022156B2

公开(公告)日：2021-06-01

申请号：US16527935

申请日：2019-07-31

Applicant: CKD CORPORATION

Inventor： Takemoto Kondo

IPC: G01M13/00 ,  F15B19/00 ,  F15B11/10 ,  F15B15/28

Abstract: An actuator-operation detecting apparatus is configured to check the operating state of a piston of an actuator. The actuator includes a double-acting cylinder, the piston that partitions the cylinder into a first pressure acting chamber and a second pressure acting chamber, and a rod connected to an end face of the piston facing the second pressure acting chamber. The actuator-operation detecting apparatus includes a first pressure detector to detect the pressure in the first pressure acting chamber, a second pressure detector to detect the pressure in the second pressure acting chamber, a differential amplifier circuit to calculate a thrust force acting on the piston based on the pressures detected by the first and second pressure detectors and the pressure-receiving area of the piston, and a microcomputer to monitor the operation of the piston based on the thrust force.