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.

公开(公告)号：USD918278S1

公开(公告)日：2021-05-04

申请号：US29725226

申请日：2020-02-24

Applicant: CKD CORPORATION

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

公开(公告)号：US20210072051A1

公开(公告)日：2021-03-11

申请号：US16644827

申请日：2018-08-24

Applicant: CKD CORPORATION

Inventor： Yasushi OHSHIMA ,  Yuki SAKAKI ,  Takaharu MATSUURA ,  Ryo EGUCHI

IPC: G01F1/32

Abstract: In this vortex flowmeter provided with a vortex generator and a flow rate measuring unit the flow rate measurement unit includes a piezoelectric element and a piezoelectric element case. The piezoelectric element case includes: a fitted part fitted in the body case; a pressure receiving part protruding out from a distal end face of the fitted part and placed in a body passage; a hollow portion formed along the axial direction of the piezoelectric element case in the fitted part to separate the fitted part and the pressure receiving part; and a slit formed inside of the pressure receiving part and configured to accommodate the piezoelectric element.

公开(公告)号：US10926907B2

公开(公告)日：2021-02-23

申请号：US16025108

申请日：2018-07-02

Applicant: CKD Corporation

Inventor： Shunji Maruyama ,  Tsuyoshi Ohyama ,  Norihiko Sakaida

IPC: B65B57/14 ,  B65B35/26 ,  B65B35/08 ,  B65B57/16 ,  B65B57/12 ,  B65B57/10 ,  A61J1/03 ,  B65B9/04 ,  B65D75/36 ,  B65B5/10 ,  G16H20/13

Abstract: A PTP packaging machine includes: a filler that fills a predetermined content into pocket portions formed in a strip-shaped container film; a sealer that is provided on a downstream side of the filler and mounts a strip-shaped cover film to the container film to close the pocket portions and obtain a strip-shaped PTP film including the cover film mounted to the container film; and a puncher that is provided on a downstream side of the sealer and punches out an expected sheet portion of the PTP film that is a region of eventually forming a predetermined PTP sheet and thereby obtain the PTP sheet.

公开(公告)号：US10907748B2

公开(公告)日：2021-02-02

申请号：US16127807

申请日：2018-09-11

Applicant: CKD Corporation

Inventor： Akihiro Ito ,  Masayuki Kouketsu ,  Keiichi Nishikawa ,  Yasuhisa Hirose ,  Takahiro Minatani

IPC: F16K3/18 ,  F16K31/06 ,  F16K3/316 ,  F16K11/065

Abstract: The flow path switching valve includes (a) a valve body having an open flow path which opens on a predetermined surface over a predetermined length in a predetermined direction, (b) a main body having a plurality of ports which open on a facing surface facing the predetermined surface at an interval shorter than the predetermined length in the predetermined direction, and a plurality of connection flow paths connected to the plurality of ports, (c) plate springs attached on both ends of the valve body in the predetermined direction so as to support the valve body such that a predetermined gap is formed between the predetermined surface and the facing surface, the plate springs applying elastic force onto the valve body according to a movement amount of the valve body in the predetermined direction, and (d) an actuator which drives the valve body back and forth in the predetermined direction.

公开(公告)号：US20200318754A1

公开(公告)日：2020-10-08

申请号：US16803246

申请日：2020-02-27

Applicant: CKD CORPORATION

Inventor： Toshio IWATA

IPC: F16K31/122

Abstract: A fluid control valve includes a multi-stage piston actuator unit with first piston and second pistons coaxially and slidably arranged therein and a valve unit provided with an inlet port for inflow of a control fluid and an outlet port for outflow of the control fluid. The first and second pistons are slidable in a sliding direction perpendicular to an imaginary line connecting the center of the inlet port and the center of the outlet port. The multi-stage piston actuator unit has a smaller thickness in a direction perpendicular to the imaginary line and perpendicular to the sliding direction than the thickness of the valve unit in the direction perpendicular to the imaginary line and perpendicular to the sliding direction. The first and second pistons have either an elliptic or oval cross-section taken perpendicular to the sliding direction, the cross-section having a long axis parallel to the imaginary line.

公开(公告)号：US10724644B2

公开(公告)日：2020-07-28

申请号：US16090900

申请日：2017-05-18

Applicant: CKD CORPORATION

Inventor： Tatsuhito Aoyama

IPC: F16K7/17 ,  F16K47/08 ,  F16K31/143 ,  F16K31/122 ,  F16K7/16

Abstract: A fluid control valve for controlling high-temperature fluid includes: a valve body including a valve chamber communicating with first and second flow passages, and a valve seat provided in the valve chamber; a metal diaphragm that contacts with and separates from the valve seat; a stem that moves the metal diaphragm up and down; and an actuator that drives the stem. The first flow passage includes a first orifice having a diameter set to 50% or less of a diameter of the second flow passage. Alternatively, the second flow passage includes a second orifice having a diameter set to 50% or less of the diameter of the second flow passage. The diameter of the second flow passage is calculated by converting a cylindrical flow passage area defined between the valve seat and the metal diaphragm when separated from the valve seat into a diameter of a circular flow passage.