Patents by Inventor Jinro Motoki

Jinro Motoki 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: 4261048
    Abstract: An analog quartz timepiece having a manually operated external control member, and a correction signal generation circuit controlled by the external control member to generate low speed and high speed correction signals when the external control member is actuated for a short period of time and for a predetermined time interval, respectively, by which a stepping motor is driven at a selected speed to perform time correction. The timepiece also includes a click mechanism operative to shift an hours hand step-wise from any optional position without affecting a minutes hand and a seconds hand. The timepiece further includes a seconds zero-reset mechanism operative to reset the seconds hand to zero.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: April 7, 1981
    Assignee: Citizen Watch Company Limited
    Inventors: Jinro Motoki, Singo Ichikawa, Kenzi Miyasaka, Hiroyuki Uematsu, Mitsuhiro Murata, Hideyuki Kawashima, Yuri Inoue, Masae Ohkubo, Mituo Oooka
  • Patent number: 4173863
    Abstract: An analog quartz timepiece having a manually operated external control member, and a correction signal generation circuit controlled by the external control member to generate low speed and high speed correction signals when the external control member is actuated for a short period of time and for a predetermined time interval, respectively, by which a stepping motor is driven at a selected speed to perform time correction. The timepiece alo includes a click mechanism operative to shift an hours hand step-wise from any optional position without affecting a minutes hand and a seconds hand. The timepiece further includes a seconds zero-reset mechanism operative to reset the seconds hand to zero.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: November 13, 1979
    Assignee: Citizen Watch Company Limited
    Inventors: Jinro Motoki, Singo Ichikawa, Kenzi Miyasaka, Hiroyuki Uematsu, Mitsuhiro Murata, Hideyuki Kawashima, Yuri Inoue, Masae Ohkubo, Mituo Oooka
  • Patent number: 4112671
    Abstract: Pulse motor driving system for use in a timepiece. The driving system has a single phase coil and permanent rotor which are stepped in a forward direction by a forward rotation driving voltage. The voltage is composed of a plurality of pulses having the same polarity. Provision is made for a control circuit connected between a frequency divider and pulse motor driving circuit. The control circuit applies a plurality of driving voltage pulses for rotating the rotor of the pulse motor in the reverse direction. The control circuit also can provide accelerated pulses to the movement of the rotor in the reverse direction thereby stepping the rotor in the reverse direction. This enables the lag of gaining hands thereby correcting the time display in preciseness.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: September 12, 1978
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Yoshiaki Kato, Jinro Motoki