Sumitomo Rubber Industries Limited

Takeshi Ishimaru

Hideyuki Okuyama

Kouhei Morita

Noriaki Hitomi

Kazuo Futamata

Takashi Marui

Hirokazu Nishimori

Yasuchika Ito

Kentaro Fujimoto

Yoshimichi Tanaka

Takashi Horio

By a securing structurea diaphragmdividing a spaceinto a first chestand a second chestis secured to a caseforming the spacetherein. The casehas a first framehaving a first concave portionfor forming the first chestand a second framehaving a second concave portionfor forming the second chestThe edge portionof the diaphragmis compressed and secured between the first frameand the second framewhich are fitted with each other. The first framehas a first securing portionfor retaining the second frameupon the fitting so as not to come off.

Structure for securing diaphragm, and diaphragm pump and valve device equipped with the same

By a securing structure, a diaphragm dividing a space into a first chest and a second chest, is secured to a case forming forms the space therein. The case has a first frame having a first concave portion for forming the first chest, and a second frame having a second concave portion for forming the second chest. An edge portion of the diaphragm is compressed and held between the first frame and the second frame which are fitted with each other. The securing structure has a fastener for constricting the first arm portions of the first frame and the second arm portions of the second frame from the outside of the case.

Structure for securing diaphragm, diaphragm pump and valve device equipped with the same, and method of securing diaphragm

The valve device has a valve main body defining a valve chest provided with a NO outlet port and a NC outlet port through which a fluid flows, and a valve for opening/closing the NC outlet port and NO outlet port. The valve includes a diaphragm disposed so as to cover the valve chest, and a drive means for pressing the diaphragm to open/close the NC outlet port and NO outlet port. The first valve seat and the second valve seat are formed around the NC outlet port and NO outlet port. The diaphragm is made of an elastic material of which JIS-K6253 durometer A hardness is A50-A85. The pressure of the diaphragm seated on the first valve seat and the second valve seat is 0.5-1.0 N/sq&#xb7;mm.

Valve device

A recessprovided in a passage block; a diaphragm covering the recessto form a valve chestin which a fluid flows; an inflow portopened at the recessand allowing the fluid to flow into the valve chest; an NC outflow portand an NO outflow portopened at the recessand allowing the fluid to flow out from the valve chest; by oscillating the diaphragm, the diaphragm is closely fitted to any one of a first valve seatformed by an openingof the NC outflow portand a second valve seatformed by an openingof the second outflow port, to allow the fluid in the valve chestto flow out from the other outflow port. The recesshas a first inclined portionand a second inclined portionhaving a depth gradually increasing from the first valve seatand the second valve seattoward the inflow opening

Provided are artificial turf with which a temperature alleviation effect can be sustained over an extended period and which is easily maintained, and an artificial turf facility wherein the artificial turf is laid. A first pile (), and a second pile () which comprises a water absorbent void therein which absorbs water, which configure the artificial turf, are placed mixed among each other in a base fabric () at a prescribed proportion.

Artificial turf and artificial turf facility

A conductive roller has a core and a conductive foam formed on a peripheral surface thereof. The conductive foam constitutes a three-phase rubber composition containing 35 to 50 parts by mass of epichlorohydrin rubber, 25 to 35 parts by mass of ethylene-propylene-diene copolymer rubber, and 25 to 30 parts by mass of acrylonitrile-butadiene rubber as a rubber component thereof. The conductive foam does not have a coating layer formed on a surface thereof. The conductive roller has an Asker C hardness, an electric resistance value, an average surface-cell diameter, and a number of surface cells set to 30 to 36&#xb0;, 10to 10&#x3a9;, 100 to 200 &#x3bc;m, and 50 to 120/1.5 mm square respectively.

Conductive roller

A paper-feeding roller () including a core () and a rubber roll () mounted on a peripheral surface of the core (). The rubber roll () has a three-layer construction composed of an inner layer (), an intermediate layer (), and an outer layer (). The inner layer (), the intermediate layer (), and the outer layer () are a non-foamed layer respectively. The JIS-A hardness of the inner layer () is set to not more than 10 degrees. The JIS-A hardness of the outer layer () is set to a range of 25 to 60 degrees.

Growing community of inventors

Kobe, Japan

Takeshi Ishimaru