Fujikin Inc.

Other

Kosuke Yokoyama

Michio Yamaji

Nobukazu Ikeda

Tsutomu Shinohara

Hiroshi Morokoshi

Tetsuya Kojima

Shigeru Itoi

Shigeaki Tanaka

Tadahiro Ohmi

Takashi Hirose

Keiji Hirao

Yuji Kawano

Masayuki Hatano

Naoya Masuda

Michio Kuramochi

Tadanobu Yoshida

Tsutomu Shonohara

Osamu Fukata

A method for facilitating fabrication of a coupling member includes a first step of boring one of upwardly open, passageways, a communication passageway and an auxiliary passageway in a body block, a second step of inserting a closure member into the auxiliary passageway, a third step of welding the closure member to the inner peripheral body portion defining the auxiliary passageway, and a fourth step of boring the other upwardly open passageway in the body block. The closure member is inserted in the second step so as to be positioned at least party in the portion where the other upwardly open passageway is to be formed.

Coupling member for use in fluid control apparatus and method of fabricating same

An on-off device disposed at each of the inlet and the outlet of a fluid controller is one of five kinds of on-off devices, i.e., on-off device having a two-port valve, on-off device having a two-port valve and a three-port valve, on-off device having a two-port valve and two three-port valves, on-off device having two three-port valves, and on-off device having three three-port valves, The main bodies of two-port valves of all types of on-off devices are identical in configuration and each have an inlet and an outlet in a bottom face thereof. Main bodies of three-port valves of all types of on-off devices are identical in configuration and each formed in a bottom face thereof with an inlet, an outlet always in communication with the inlet, and an inlet-outlet subopening.

Fluid control apparatus

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 fluid control apparatus having a plurality of fluid control members each further having, a blocklike body with an upper side and a lower side, at least one monofunctional member for controlling fluid mounted on the upper side of the blocklike body, and at least one fluid channel formed between the monofunctional member for controlling fluid and the bottom side of the blocklike body; a plurality of couplings each further having, a blocklike body mounted to the bottom surface of at least one fluid control member, at least one communication channel for fluids communicating between at least two fluid channels of at least two different fluid control members; and a base plate for supporting a plurality of couplings. Each of the plurality of fluid control members is mounted to each of the plurality of couplings so as to be individually removable therefrom.

Each of coupling members 5, 12 is formed with a retainer accommodating recessed portion 45, 46 in an butting end face thereof, the recessed portion 45, 46 being formed on a bottom face thereof with a gasket holding annular ridge 47, 48 having an annular projection 47a, 48a. A retainer 42 comprises a retainer body 43 holding the outer periphery of a gasket 41 and attached to the outer periphery of the annular ridge 47 of one of the coupling members, 5, and a guide ring portion 44 for guiding a peripheral surface of the recessed portion 46 of the other coupling member 12 when the two coupling members 5, 12 are butted against each other.

Fluid coupling

An annular recess is formed in an inner periphery defining a bolt shank bore and has fitted therein an annular elastic member having elasticity radially thereof and having an inside diameter smaller than the outside diameter of the shank of a bolt. The shank bore has at an intermediate part thereof a stepped portion so as to give an increased diameter to a bore portion from the intermediate part to one end of the bore, and a hollow cylindrical member for preventing the elastic member from slipping out is inserted in the shank bore from the bore end so as to form a clearance between the stepped portion and the preventing member, whereby the annular recess is formed.

Bolt retainer for members to be fixed together by the bolt

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 main body is internally formed with a main channel extending from a rear end face thereof nearly to a first valve actuator, and two subchannels communicating with the main channel via second and third valve actuators, respectively. The valve main body has a slanting face extending forwardly downward and having the first valve actuator mounted thereon.

Shutoff-opening devices and fluid control apparatus comprising such

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.

Growing community of inventors

Osaka, Japan

Kosuke Yokoyama