Patents Represented by Law Firm Parkhurst and Oliff
  • Patent number: 4696853
    Abstract: This invention relates to a textile reinforcement process for making laminated complexes, of the type constituted for the major part by fibers extending transversely with respect to the length of said reinforcement, said yarns being joined together by a loose binding warp, wherein:the transverse yarns are disposed on a bias with respect to the length of the binding warp, andsaid binding warp is based on yarns which are at least superficially thermo-fusible.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: September 29, 1987
    Assignee: Establissements les Fils d'Auguste Chomarat & Cie
    Inventor: Andre Fourezon
  • Patent number: 4673807
    Abstract: This invention relates to an automatic range control method for a compact and portable optical density/dot percentage measuring device which can use a conventional light table as its light source, and which can digitally display a result of measurement. In the method, information obtained from an A/D converter, which converts a measured analog signal to a digital signal, is positively employed for reducing overall measuring time. An A/D conversion is first made at x1 range by a 10 bit A/D converter. The A/D conversion value is compared with predetermined values to determine a gain to be selected and perform further A/D conversion.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: June 16, 1987
    Assignee: Dai Nippon Insatso Kabushiki Kaisha
    Inventors: Yuji Kobayashi, Norio Takahashi
  • Patent number: 4624153
    Abstract: A continuously variable transmission for obtaining a large transmission range ratio between the input shaft and the output shaft. The transmission employs a planetary gear unit, and an engine torque is transmitted through a gear train or a V-belt transmission to the planetary gear unit.
    Type: Grant
    Filed: December 13, 1983
    Date of Patent: November 25, 1986
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Itoh, Mituhiko Okada
  • Patent number: 4511412
    Abstract: A water-in-oil emulsion explosive, comprising aqueous inorganic oxidizer solution, oil, emulsifier and hollow microspheres, and having high low-temperature detonability and storage stability can be produced without causing breakage of the hollow microspheres through a specifically limited kneading method, wherein agitating blades fitted to an agitating shaft in a kneader are subjected to up and down movements in the axial directions of the agitating shaft and concurrently to a rotary motion to knead homogeneously a water-in-oil emulsion formed of the aqueous solution of inorganic oxidizer, oil and emulsifier, together with the hollow microspheres.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: April 16, 1985
    Assignee: Nippon Oil and Fats Co. Ltd.
    Inventors: Shigeru Kakino, Katsuhide Hattori, Yoshiaki Fukatsu, Hideo Moriyama, Hidekazu Sakakibara
  • Patent number: 4511414
    Abstract: A water-in-oil emulsion explosive comprising an aqueous solution of inorganic oxidizer, an oil, an emulsifier and hollow microspheres, and having high low-temperature detonability and storage stability can be produced without causing breakage of the hollow microspheres through particular emulsifying and kneading steps, in which emulsifying step the aqueous solution of inorganic oxider, the oil and the emulsifier are fully emulsified into a water-in-oil emulsion in an emulsifying machine having a novel structure, and in which kneading step the resulting water-in-oil emulsion is kneaded together with the hollow microspheres by means of agitating blades, said agitating blades being arranged in the kneader and carrying out concurrent by rotary motion and up and down movements.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: April 16, 1985
    Assignee: Nippon Oil and Fats Co. Ltd.
    Inventors: Fumio Matsui, Shin Aono, Hiroshi Sakai, Katsuhide Hattori, Shigeru Kakino
  • Patent number: 4409852
    Abstract: A method of measuring the stretch of a conveyor belt, wherein opposite ends of a belt having embedded therein steel cord cores in the longitudinal direction thereof are joined to each other, including: previously providing magnetic marks at two positions spaced apart a given distance from each other and interposing a joint of the steel cord cores of the conveyor belt therebetween; disposing two magnetic sensors spaced a given distance apart from each other in the running direction of the conveyor belt, in adjacent but non-contacting relation to the conveyor belt; detecting a period of time during which either one of the two magnetic marks moves across the two magnetic sensors during running of the conveyor belt and measuring the running speed of the conveyor belt based on the period of time and a distance across the two magnetic sensors; detecting also during running of the conveyor belt a time at which one of the magnetic marks in front in the running direction of the conveyor belt reaches one of the magneti
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: October 18, 1983
    Assignee: Bridgestone Tire Company Limited
    Inventors: Isao Suzuki, Haruyuki Serikawa