Patents by Inventor Hiroyuki Yahagi

Hiroyuki Yahagi 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: 7012207
    Abstract: To electrically connect switch terminals of a housing and a control member in a switch for an electric tool with ease and to prevent the electric connection from becoming incomplete even when vibration occurs, elastic bodies for maintaining an electric connection are interposed between the control member and the switch terminals so that the control member and the switch terminals can maintain a stable connection even when vibration is imparted to the housing.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: March 14, 2006
    Assignee: Satori S-Tech Co., Ltd.
    Inventors: Hiroyuki Yahagi, Isao Inagaki
  • Publication number: 20040251119
    Abstract: To electrically connect switch terminals of a housing and a control member in a switch for an electric tool in ease and to prevent the electric connection from becoming incomplete even when vibration occurs, elastic bodies for keeping electric connection are interposed between the control member and said switch terminals so that the control member and the switch terminals can keep stable connection even when vibration is imparted to the housing.
    Type: Application
    Filed: May 26, 2004
    Publication date: December 16, 2004
    Inventors: Hiroyuki Yahagi, Isao Inagaki
  • Publication number: 20020147661
    Abstract: A method of delivering sample pictures containing information about how to purchase the original picture data. A computer system stores picture data received from mobile stations over a network. It then creates sample pictures from the stored picture data. Each sample picture contains ordering information that shows where to purchase the original version of the picture data. When a request is received from a terminal station on the network, the computer transmits such sample pictures to the requesting station.
    Type: Application
    Filed: September 26, 2001
    Publication date: October 10, 2002
    Applicant: Fujitsu Limited
    Inventors: Hiroshi Hatakama, Tetsuya Tsukahara, Takahisa Hatakeyama, Hiroyuki Yahagi, Kenji Ishii, Takashi Ueki, Satoshi Muramatsu
  • Patent number: 5990639
    Abstract: An improved phase controller is operatively connected to the operating lever or trigger of an electrically powered tool for supplying its motor with electric power from an ac power supply. It includes a device for establishing a divisional voltage derived from the ac voltage across the electric power supply. A variable resistor-and-capacitor series-connection is connected across the motor-and-power supply series-connection. A device provided for supplying the ac motor with electric power when the charging voltage across the capacitor rises above the divisional voltage. The variable resistor is operatively connected to the operating lever, and the capacitor can be charged with electricity at a charging rate which is determined by the variable resistance and the fixed capacitance under the control of the operating lever.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: November 23, 1999
    Assignee: Satori Electric Co., Ltd.
    Inventors: Hiroyuki Arai, Hiroyuki Yahagi, Shinichi Masuda
  • Patent number: 5981885
    Abstract: An operation-staggered dual switch is provided having a casing, first and second switching mechanisms installed in the casing, the switching mechanisms being operatively connected such that operation of the first switching mechanism may follow operation of the second switching mechanism after a predetermined delay, wherein the operation-staggered dual switch includes delay means comprising a connection rod having indentations formed on one side, a train of toothed wheels having a leading toothed wheel and a trailing toothed wheel, the leading toothed wheel of the train of toothed wheels being engaged with selected indentations of the connection rod, and a rotary damper connected to the trailing toothed wheel of the train of toothed wheels, the connection rod being responsive to initiation of operation of the first switching mechanism for moving in a given direction.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: November 9, 1999
    Assignee: Satori Electric Co., Ltd.
    Inventors: Yuichi Katoh, Hiroyuki Yahagi