Fujikin Inc.

Other

Shigeru Itoi

Michio Yamaji

Tetsuya Kojima

Tsutomu Shinohara

Nobukazu Ikeda

Hiroshi Morokoshi

Tadahiro Ohmi

Keiji Hirao

Kenji Tsubota

Kosuke Yokoyama

Ryutaro Nishimura

Yuji Kawano

Shigeaki Tanaka

Susumu Ozawa

Tadanobu Yoshida

Warner F Funes

Gregory W Ochs

Kenji Yamamoto

Kazuhiro Yoshikawa

Yukio Minami

Tadayuki Yakushijin

Tsuyoshi Tanikawa

Ichiro Tokuda

Hisashi Tanaka

Masayuki Hatano

Naoya Masuda

Michio Kuramochi

Michihiro Kashiwa

Tsutomu Shonohara

Each of ridgeson respective opposite side surfaces of a gaskethas a trapezoidal cross sectional shape defined by an outer tapered faceproviding an outer peripheral surface, an inner tapered faceproviding an inner peripheral surface and a flat faceproviding a top end surface. The hardness of the gasket, the angle between the tapered facesof the ridge, the height of the ridgeand the area of the flat top end faceof the ridge are so determined that the value of thrust for tightening up the coupling is between a predetermined minimum value and a predetermined maximum value.

Method of making a fluid coupling

Fluid coupling and method of designing the same

A fluid control deviceincludes a working memberin automatic opening and closing, which is moved vertically by introduction or discharge of compressed fluid to or from a compressed fluid inlet chamberformed in a casingto move a valve element holderto an opening position against bias force of a compression coil springand an working memberin manual opening and closing, which is moved vertically by a manual operation and directly presses the valve element holderdownward when it is moved downward.

Fluid control device

A fluid controller, wherein the recessed port () of a body () is formed of larger diameter part () near an opening and a small diameter part () continued to the lower part of the large diameter part () through a step part (). A flow passage forming disk () is fitted to the recessed portion (). The fluid passage forming disk () comprises a large diameter cylindrical part () fitted to the large diameter part () in the recessed portion, a connection part () supported by the step part () in the recessed portion, and a small diameter cylindrical part () having an outer diameter smaller than the inner diameter of the small diameter part () in the recessed portion and having a lower end supported by the bottom surface of the recessed portion (). A plurality of through-holes () communicating an annular space (S) on the outside of the small diameter cylindrical part with an annular space (S) on the inside of the large diameter cylindrical part are formed at the connection part () of the flow passage forming disk. The fluid inflow passage () is led into the lower end of the small diameter cylindrical part () of the flow passage forming disk (), and a fluid outflow passage () is led into the annular space (S) on the outside of the small diameter cylindrical part.

Fluid controller

Line interconnecting means interconnecting two lines adjacent to each other laterally thereof comprises a lateral projectionformed on a two-way connecting block couplingof the first of the lines, a recessed portionformed in a two-way connecting block couplingof the second of the lines for the lateral projectionto fit in, a coupling branch channelformed in the block couplingprovided with the lateral projection, a first valve body branch channelA formed in the bodyof a shut-off valveof the first line for always causing a main channelin the valve body to communicate with the coupling body upper surface openingof the coupling branch channel, and a second valve body branch channelB formed in the bodyof a shut-off valveof the second line for always causing a main channelin the valve body to communicate with a lateral projection upper surface opening of the coupling branch channel

Fluid control apparatus

Joint member for fluid control apparatus

Metal diaphragm valve

A locking device comprises a stopper support fixed to the body of a fluid controller, and a stopper nonrotatably mounted on the stopper support and engageable with a channel opening-closing handle for preventing the rotation of the handle. The stopper mounted on the support is movable upward and downward between a locking position wherein the stopper engages with the handle and an unlocking position wherein the stopper is out of engagement with the handle. The stopper support is formed with an opening for fitting the controller body therein and an aperture for fitting the stopper therein. The stopper has a vertical portion slidably fitted in the aperture and formed with a lock attaching bore.

Device for locking channel opening-closing handle of fluid controller

Bolt bores in lower members each comprise a large-diameter portion larger than the head of a bolt in diameter, and a small diameter portion extending downward from the large-diameter portion with a stepped portion formed therebetween and having a diameter intermediate between the diameter of the bolt head and the diameter of the shank of the bolt. A heat insulator has a spacer inserting hole. A hollow cylindrical spacer having an inside diameter larger than the diameter of the bolt shank is inserted through the small-diameter portion of the bolt bore and the spacer inserting hole so that the upper end of the spacer is positioned in the large-diameter portion. The spacer has a lower end bearing on a support member. A hollow cylindrical elastic member is interposed between the bolt head and the stepped portion for biasing the lower member toward the support member.

Device for fixing lower members and fluid control apparatus incorporating same

A regulator for regulating a flow rate is provided with an upper connector having a downwardly opened channel in communication with the regulator. An on-off valve connected to the regulator is provided with a lower connector having an upwardly opened channel in communication with the on-off valve. The upper connector is lapped over the lower connector and removably joined thereto with a screw so as to cause the downwardly opened channel to communicate with the upwardly opened channel. Accordingly, the regulator can be removed singly, for example, when malfunctioning.

A coupling comprises a holding member having a U-shaped cross section, and a channel member held by the holding member. The holding member has an upper wall formed with screw bores for use in attaching the holding member to a fluid controller. The channel member comprises a body having an inner channel and fitted in a space between the upper wall of the holding member and a lower wall thereof, a tubular upward projection communicating with the inner channel of the body and having an upper end inserted in a through bore in the upper wall of the holding member to communicate with a downward channel of the fluid controller, and a tubular lateral projection communicating with the inner channel of the body and extending laterally. The upper end of the channel member has an outward flange, and the through bore of the upper wall of the holding member has an inward flange for supporting the flange.

Couplings for fluid controllers

A valve mount having two valves removably installed thereon from above as arranged in a direction comprises an inflow channel forming member having a channel in communication with an inlet of the valve disposed at one end thereof, a communication channel forming member having a channel for causing an outlet of the valve at the end to communicate with an inlet of the other valve adjacent thereto, an outflow channel forming member having a channel in communication with an outlet of the other valve, and a subchannel forming member having a channel in communication with an inlet-outlet port formed in the other valve.

Shutoff-opening device

Lower members each have a bolt bore comprising a large-diameter portion larger than the head of a bolt in diameter, and a small diameter portion extending downward from the large-diameter portion with a stepped portion formed therebetween and having a diameter intermediate between the diameter of the bolt head and the diameter of the shank of the bolt. The small-diameter portion of the bolt bore has fitted therein a hollow cylindrical spacer with an inside diameter larger than the diameter of the bolt shank. The spacer has a lower end supported by a support member and an upper end positioned in the large-diameter portion. A hollow cylindrical elastic member is interposed between the bolt head and the stepped portion for biasing the lower member toward the support member.

Device for fixing lower members and fluid control apparatus

In a diaphragm valve designed to seal with a metal diaphragm, corrosion resistance and strength of the diaphragm are improved by forming the diaphragm from a thin alloy sheet containing, by weight, 12.5-14.5% Mo, 20.0-22.5% Cr, 2.0-6% Fe, 2.5-3.5% W, 2.5% or less Co, 0.015% or less C, 0.08% or less Si, 0.50% or less Mn, 0.35% or less V, 0.02% or less P, 0.02% or less S and the remainder Ni. The thin alloy sheet is cold-rolled after annealing to enhance the strength of the diaphragm.

Diaphragm valve

Growing community of inventors

Osaka, Japan

Shigeru Itoi