Fujikin Inc.

Sekisui Kagaku Kogyo Kabushiki Kaisha

Kenji Tsubota

Michio Yamaji

Tsutomu Shinohara

Ichiro Tokuda

Shigeru Itoi

Susumu Ozawa

Tadanobu Yoshida

Ichiro Mine

Nobukazu Ikeda

Izuru Shikata

Mutsunori Koyomogi

Shigeaki Tanaka

Takeshi Nakachi

Takayuki Oka

Takashi Shinjo

Motoi Nagano

Nobuo Hanatani

Mitsue Matsumoto

Hidenaga Hoshiyama

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 device that can be miniaturized without reducing a bolt diameter and a path diameter is provided. A fluid controllerhaving an inlet portand an outlet portaligned in a line direction and a line-to-line connection portpositioned in the middle of the above ports in the line direction is supported by a pair of joint members, a stepped partis formed at each upper surface of opposed parts of the joint members, and line-to-line connection path forming membersandhaving line-to-line pathsandeach communicating with the line-to-line connection portof the fluid controller, respectively and constituting line-to-line connecting meansare supported by the stepped partsof the joint members

Fluid control device

A pipe joint locking device which prevents accidental loosening of a pipe joint after tightening and with which a sealing property of a seal portion of the pipe joint is not impaired even if a force for rotating a pipe member acts on the pipe member. The device is formed of: a first component memberincluding a mounting portionto be mounted to a joint memberhaving an external thread while prevented from relative rotation, a cover portionto be brought into contact with an outer peripheral face of a cap nutfrom a lower side, and a coupling portionto be brought into contact with a pipe memberfrom the lower side; and a second component memberincluding a cover portionto be brought into contact with the outer peripheral face of the cap nutfrom an upper side and a coupling portionto be brought into contact with the pipe memberfrom the upper side. The coupling portionof the first component memberand the coupling portionof the second component memberare coupled to be fixed to a portionof the pipe memberprotruding from the cap nut

Pipe joint locking device

The present invention provides a joint member which suppresses the increase of the number of members and enables the provision of a further compactified integrated fluid control apparatus. A sensor-equipped joint memberincludes a channel blockincluding a V-shaped channelformed therein for communicating adjacent fluid control devicesandto each other at their lower-end openings, and a pressure sensorprovided on a side surface of the channel block. The channel blockis provided with a branched channelwhich is branched from the V-shaped channeland is communicated to the pressure sensor

Sensor-equipped joint member

A rectangular parallelepipedal joint for use in fluid control apparatus comprises in its entirety two divided members which are a grooved connecting member having a groove in its center and provided in portions thereof on respective opposite sides of the groove with bolt holes each having a stepped portion for receiving therein a joint attaching bolt without permitting the head thereof to project from the joint and with female screw portions for respective male screw members to be screwed in for attaching an apparatus component; and a flat rectangular parallelepipedal communication member fitting in the groove of the connecting member and provided only with a U-shaped communication channel. The connecting member is made of stainless steel, while the communication member is made of polyamide 6. A positioning protrusion is formed on a bottom face defining the groove of the connecting member and is fitted in a positioning recessed portion formed in the bottom surface of the communication member.

Joint for use in fluid control apparatus

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.

Force amplifying meanscomprises a tapered memberextending vertically downward from the lower end of an operating rod, a disk memberprovided at the upper end of a valve stem, and front and rear pivotal membersarranged between the two membersand opposed to each other with the tapered memberpositioned therebetween, the pivotal membersbeing pivotally movable about respective pivots. Each of the pivotal membershas a plate body, an upper contact faceformed on an upper portion of the body and in bearing contact with a tapered face of the tapered member, and a lower contact faceformed on a lower portion of the body and bearing on the upper surface of the disk member. The lower contact faceof each pivotal member is in the form of a circular-arc cam face centered about a center line positioned away from the axis of the pivot

Controller

Line interconnecting meanscomprises lower channel blockseach having a line interconnecting channeland arranged in an upper stage of lines B, B, Bto be interconnected, at the same position with respect to the direction of the lines, and a plurality of upper channel blockseach arranged on an upper side of the lower channel blocksof adjacent lines interconnected and each having a transverse channelextending orthogonal to the lines and downward channelextending from the transverse channeland communicating with the respective line interconnecting channelsof the lower channel blocks. Each of the lower channel blocksis removably fastened to a coupling member in a lower stage with screws from above, and the upper channel blocksare removably fastened to the lower channel blockswith screws from above.

A connecting layer for interconnecting fluid control devices in series and in parallel comprises an upper connecting layerand a lower connecting layer. The upper connecting layeris provided by parallel rows each comprising block couplingsarranged longitudinally of the apparatus, each of the block couplings having a longitudinal channelfor interconnecting the adjacent fluid control devices in the row and a through channelcommunicating with the fluid control device. The lower connecting layeris provided by block couplingeach having a lateral channelfor interconnecting the through channelsof the block couplingsof the upper connecting layerwhich are arranged laterally and by block couplingseach adapted to cause the through channelof the block couplingof the upper connecting layerto communicate with an inlet-side or outlet-side coupling. The couplingsof the lower connecting layerare attached to a base platewith screws from above, and the couplingsof the upper connecting layerare attached to the couplingsof the lower connecting layerwith screws form above.

Fluid control apparatus

A pair of tape heaters are arranged respectively on opposite sides of at least one line and held to the corresponding coupling members by a plurality of clips Each of the clips comprises a pair of side walls opposed to each other as spaced apart by a predetermined distance, and a connecting wall interconnecting the pair of side walls at an intermediate portion of the height thereof so as to move lower portions of the side walls away from each other when upper portions of the side walls are subjected to a force acting to move the upper portions toward each other and to restore the side walls to the original state when the force is removed.

Process for preparing solvent-type acrylic pressure-sensitive adhesives

A method for producing an air-permeable adhesive tape comprising a substrate and a porous adhesive layer formed on said substrate is provided. The method comprises the steps of: forming a layer of a solution on a substrate, said solution containing an adhesive material in an organic solvent; applying water drops on said layer of said solution while said organic solvent remains in said layer, thereby allowing water drops to sink into said layer, the diameter of said water drops being in the range of 10 to 1000 .mu.m, and the total amount of said water drops applied onto the surface of said layer being 5 to 200 g/m.sup.2 ; evaporating said organic solvent contained in said layer of the solution, thereby forming an adhesive layer that contains said water drops; and evaporating said water from said adhesive layer, thereby forming communicating pores extending from the external surface to the inner surface of said adhesive layer.

Growing community of inventors

Osaka, Japan

Kenji Tsubota