Daikin Industries, Ltd.

Nissin Chemical Industry Co., Ltd.

Kazuhisa Matsumoto

Tsuyoshi Noguchi

Yoshihiro Shirai

Etsuo Minamino

Mitsuru Kishine

Masayasu Tomoda

Hiroyuki Ohata

Tsuyoshi Ono

Muneaki Kanenobu

Satoshi Terasaki

Yoshiko Mori

The present invention provides an ionizing radiation irradiated rubber molded product and a process for preparing the same, the rubber molded product being prepared by irradiating with an ionizing radiation a preform comprising 5 to 95% by weight of a fluororubber containing vinylidene fluoride copolymerized therein in a proportion of 45 to 88 mole % and having a number average molecular weight of 5,000 to 200,000, and 95 to 5% by weight of an acrylic rubber.

Molded rubber irradiated with ionizing radiation and process for producing the same

Rubber/rubber laminates

Rubber compositions of low compression set

Crosslinkable composition

A transducer for detecting pressure changes in pipes by detecting deformation of the pipes and for converting the pressure changes in the pipes into electric signals includes a piezoelectric element having a bimorph structure as a sensor element. The piezoelectric element is constructed in such a way that an intermediate layer is interposed between two piezoelectic pieces. The element is pressed against the pipe surface by a holder which is sufficiently elastic to allow opposite ends of the piezoelectric element in the circumferential direction of the pipe to elastically abut against the pipe periphery. Thereby the ends of the piezoelectric element can be pressed in tight contact against the outer surfaces of pipes having various diameters, and the internal pressure of the pipes can be detected reliably.

Transducer for detecting pressure changes in pipes

Growing community of inventors

Settsu, Japan

Kazuhisa Matsumoto