公开(公告)号：US11512792B2

公开(公告)日：2022-11-29

申请号：US16555793

申请日：2019-08-29

Applicant: CKD CORPORATION

Inventor： Shinji Itoh

IPC: F16K31/06 ,  H01F7/08 ,  H01F7/06

Abstract: An electromagnetic valve has a solenoid, which includes a coil, a plunger, a fixed core, and a plunger spring. The fixed core is E-shaped and has a base, a first outer leg, a second outer leg, and a central leg. The first outer leg, the second outer leg, and the central leg extend from the base. The first outer leg has a first outer attraction surface configured to attract the plunger. The second outer leg has a second outer attraction surface configured to attract the plunger. The central leg has a central attraction surface configured to attract the plunger. The central attraction surface is larger in area than each of the first and second outer attraction surfaces.

公开(公告)号：US11466782B2

公开(公告)日：2022-10-11

申请号：US17430175

申请日：2020-02-21

Applicant: CKD CORPORATION

Inventor： Yasunori Nishimura

IPC: F16K1/22 ,  F16K31/04 ,  F16K37/00

Abstract: A butterfly valve has a rod connected to a DD motor and disposed along a direction orthogonal to a flow path, and a butterfly valve body that is linked to the rod and that opens and closes the flow path due to the rod being rotated by the DD motor, wherein a linking body center of gravity, which is the center of gravity of a rotating liking body having at least the rod and the butterfly valve body as constituent members, is positioned on an axial line of a rotating shaft of the DD motor.

公开(公告)号：US11360033B2

公开(公告)日：2022-06-14

申请号：US17182642

申请日：2021-02-23

Applicant: CKD CORPORATION

Inventor： Yukihiro Taguchi

IPC: G01N21/00 ,  G01N21/95 ,  G01J3/28 ,  G01N21/359 ,  G01N21/88 ,  G01N21/17

Abstract: An inspection device includes: an illumination device that irradiates an object with near infrared light; a spectroscope that disperses reflected light from the object irradiated with the near infrared light; an imaging device that takes a spectroscopic image of the reflected light dispersed by the spectroscope; and a processor. The processor: obtains spectral data at a plurality of points on the object based on the spectroscopic image obtained by the imaging device; selects, as typical spectral data representing the object from among the spectral data at the plurality of points, one of: spectral data in which a luminance value in a predetermined wavelength is a median value; and spectral data in which a summation of luminance values in a predetermined wavelength range is a median value; and performs a predetermined analysis for the object based on the typical spectral data and detects a different type of object.

公开(公告)号：US11320078B2

公开(公告)日：2022-05-03

申请号：US16509925

申请日：2019-07-12

Applicant: YODOGAWA HU-TECH CO., LTD. ,  CKD CORPORATION

Inventor： Naoyuki Oba ,  Akihiro Yamamoto ,  Katsumi Ogawa ,  Hiroki Iwata

IPC: F16L37/20

Abstract: The present invention provides a checking tool for a tube coupler with which it is possible to visually check an attachment state of the tube coupler. A checking tool 10 for a tube coupler according to the present invention is a checking tool configured to be attached to a tube coupler 30, the tube coupler being formed of a first coupling piece 31 and a second coupling piece 35 hingedly connected to each other so as to be able to be opened and closed, being configured to couple tubes to each other with use of the first coupling piece and the second coupling piece, and having hook pieces 33 and 37 that are provided protruding from outer circumferential surfaces of the first coupling piece and the second coupling piece. The checking tool includes a pair of longitudinal frames 11 that conform to an outer circumferential surface of the tube coupler, a first lateral frame 12 that connects end portions at one end of the pair of longitudinal frames to each other, a second lateral frame 16 that connects end portions at the other end of the pair of longitudinal frames to each other, a first claw piece 13 that is provided protruding from the first lateral frame toward the second lateral frame, and a second claw piece 17 that is provided protruding from the second lateral frame toward the first lateral frame.

公开(公告)号：USD935479S1

公开(公告)日：2021-11-09

申请号：US29725228

申请日：2020-02-24

Applicant: CKD CORPORATION

Designer： Takaharu Katou ,  Kazuyoshi Kikuchi ,  Atsushi Fukuta ,  Hiroko Isayama

公开(公告)号：US11156560B2

公开(公告)日：2021-10-26

申请号：US16794613

申请日：2020-02-19

Applicant: CKD CORPORATION

Inventor： Tadashi Inoguchi

IPC: G01N21/85 ,  G01N21/88 ,  G01N21/90

Abstract: An appearance inspection device includes: a conveyance body having a surface and a rear face and conveyed in a predetermined direction; an illumination device that irradiates with predetermined light an inspection area through which a plurality of objects pass, wherein the objects are arranged at predetermined intervals on a first face that is one of the surface and the rear face; a plurality of imaging devices each of which takes, along a predetermined direction, an image of part of side faces of the objects located in the inspection area, wherein the predetermined direction is inclined to both the surface and the rear face; and a processor that inspects an appearance of the side faces of the objects based on image data obtained by the imaging device.

公开(公告)号：US11118690B2

公开(公告)日：2021-09-14

申请号：US16309051

申请日：2017-06-19

Applicant: CKD CORPORATION

Inventor： Tatsushi Nabei ,  Michio Miyashita ,  Shinji Ishikawa ,  Fumihito Tsuchiya

IPC: F16K1/36 ,  F16K31/122 ,  F16K41/12

Abstract: A fluid control valve and manufacturing method thereof, wherein, when a pressing force acts on the engagement surface between a diaphragm member and a valve seat-contacting member, the valve seat-contacting member is not displaced and no gap is formed. The diaphragm member made of a first fluorine-based resin material is provided with a diaphragm membrane and a rod-shaped part in the center of the diaphragm membrane. The valve seat-contacting member made of an injection-moldable second fluorine-based resin material is provided with a ring-shaped sealing surface and a recess on the opposite side from the ring-shaped sealing surface. The rod-shaped part is partly fitted into the recess. A ring-shaped recessed is formed on outer circumference of a portion of the rod-shaped part. A small diameter recess is formed on the inner circumference of the recess. The ring-shaped recess section and the small diameter recess adhere closely to form the engagement surface.

公开(公告)号：US11054241B2

公开(公告)日：2021-07-06

申请号：US16363975

申请日：2019-03-25

Applicant: CKD Corporation

Inventor： Hiroyuki Ishigaki ,  Takahiro Mamiya

IPC: G01B9/02 ,  G01B11/00 ,  G01B11/24

Abstract: A three-dimensional measurement device includes: an optical system that splits incident light into two lights and radiates lights to a measurement object and to a reference surface, and recombines the two lights to emit combined light; a first irradiator that emits first light including first polarized light and entering a first surface; a second irradiator that emits second light including second polarized light and entering a second surface; a first imaging system to which the first output light enters wherein the first output light is emitted from the first surface when the first light enters the first surface; a second imaging system to which the second output light enters wherein the second output light is emitted from the second surface when the second light enters the second surface; and an image processor that performs three-dimensional measurement based on interference fringe images obtained by the first and second imaging systems.

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.

公开(公告)号：US20210138637A1

公开(公告)日：2021-05-13

申请号：US17047348

申请日：2019-04-08

Applicant: CKD Corporation

Inventor： Satoshi Wakasugi ,  Shigetaka Matsumoto

IPC: B25J9/14 ,  F16M11/20 ,  B25J9/06

Abstract: An arm-type support device includes a first frame, a second frame, a first arm member, a second arm member, and an actuator. The actuator includes a driving unit, an actuating rod, and a link member. The first arm member, the second arm member, the first frame, and the second frame form a parallel link. The first arm member is hollow and accommodates the actuator and the second arm member.