Patents by Inventor Seishiro Ishiwatari

Seishiro Ishiwatari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6107580
    Abstract: This invention provides an omnidirectionally responsive cable switch (5) capable of snake-like or twisted wiring or layout and comprising a tubular outer cover (1) made of an insulating material and 2-4 separate conductive rubbers (3a-3d) fixed on the inner surface of the outer cover leaving an air gap (2) therebetween, the separate conductive rubbers being spaced apart from each other, and the outer cover being capable of being distorted together with the conductive rubbers so that the separate conductive rubbers may contact with each other when substantial compressive pressure is applied thereon at any point of the outer cover, thereby forming a switching contact therebetween. The air gap (2) may be substantially of a cross-shaped, Y-shaped, V-shaped, S-shaped, or arrow-head-shaped form. The omnidirectionally responsive cable switch may be further protected or guarded by a reinforcing member or material.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: August 22, 2000
    Assignee: Shinmei Rubber Industries Co., Ltd.
    Inventors: Kyofu Hoshikawa, Seishiro Ishiwatari, Mitsuru Tanahashi, Tadamitsu Sasaki
  • Patent number: 4617433
    Abstract: A pressure-sensitive conductive strip switch assembly having high reliability and sensitivity is disclosed, which comprises a strip-like pressure-sensitive conductive rubber based on silicone containing metal powder, a pair of strip-like plain woven metal wire cloths, and a rubber sheath consisting of heat resistant silicone rubber. In the manufacture of such a strip switch assembly both side ends of the conductive rubber are welded to the inner wall of the rubber sheath and only the outside of each of the wire cloths is edged into the inner wall of the rubber sheath while maintaining space portion between the conductive rubber and each of the wire cloths by blowing of air.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: October 14, 1986
    Assignees: Bridgestone Corporation, Shinmei Rubber Ind., Co., Ltd.
    Inventors: Kyofu Hoshikawa, Seishiro Ishiwatari, Mitsuru Tanahashi