Patents by Inventor Takayuki Hasumi
Takayuki Hasumi 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: 8295128Abstract: A radio-controlled timepiece includes an antenna receiving a standard radio wave and a plurality of motors driving indicator portions which indicate information. A fourth motor which is driven at a lowest frequency during the standard radio wave reception of the antenna is disposed closer to the antenna than the rest of the motors.Type: GrantFiled: February 19, 2008Date of Patent: October 23, 2012Assignee: Citizen Holdings Co., Ltd.Inventors: Takayuki Hasumi, Moto Yamashita
-
Patent number: 7961557Abstract: An analog electronic watch of the present invention includes: a display unit (2) for displaying time with a position of a hand; a stepper motor (3) for driving the hand; a motor drive unit (4) for controlling driving of the stepper motor at a predetermined hand drive cycle at normal time; hand position detection means (5) for detecting a position of the hand; a hand position detection means control unit (6) for intermittently controlling driving of the hand position detection means (5) at a first detection cycle which is longer than the hand drive cycle; and a detection cycle changing unit (7) for instructing the hand position detection means (5) to change the detection cycle.Type: GrantFiled: March 2, 2007Date of Patent: June 14, 2011Assignee: Citizen Holdings Co., Ltd.Inventors: Teruhiko Fujii, Isao Kitazawa, Masaaki Namekawa, Takayuki Uchida, Takayuki Hasumi, Takuji Ike
-
Patent number: 7746731Abstract: An electronic device such as a watch comprises a solar cell (14) and window portions (2, 6) which is located on the solar cell (14) and through which light is applied to the solar cell (14). The solar cell (14) is divided into a plurality of divided cells such that irradiated portions (14A to 14F) of the divided cells are equal in area, in consideration of the shapes, areas, and number of the window portions (2, 6) and the number of divisions of the solar cell (14).Type: GrantFiled: April 13, 2005Date of Patent: June 29, 2010Assignee: Citizen Holdings Co., Ltd.Inventors: Eiki Murakami, Takeo Mutoh, Takayuki Hasumi, Kenji Shimoda
-
Publication number: 20100074059Abstract: The radio-controlled timepiece is configured to include an antenna receiving a standard radio wave and a plurality of motors driving indicator portions which indicate information. A fourth motor which is driven at a lowest frequency during the standard radio wave reception of the antenna is disposed closer to the antenna than the rest of the motors.Type: ApplicationFiled: February 19, 2008Publication date: March 25, 2010Inventors: Takayuki Hasumi, Moto Yamashita
-
Publication number: 20090016172Abstract: An analog electronic watch of the present invention includes: a display unit (2) for displaying time with a position of a hand; a stepper motor (3) for driving the hand; a motor drive unit (4) for controlling driving of the stepper motor at a predetermined hand drive cycle at normal time; hand position detection means (5) for detecting a position of the hand; a hand position detection means control unit (6) for intermittently controlling driving of the hand position detection means (5) at a first detection cycle which is longer than the hand drive cycle; and a detection cycle changing unit (7) for instructing the hand position detection means (5) to change the detection cycle.Type: ApplicationFiled: March 2, 2007Publication date: January 15, 2009Inventors: Teruhiko Fujii, Isao Kitazawa, Masaaki Namekawa, Takayuki Uchida, Takayuki Hasumi, Takuji Ike
-
Publication number: 20070240753Abstract: An electronic device such as a watch comprises a solar cell (14) and window portions (2, 6) which is located on the solar cell (14) and through which light is applied to the solar cell (14). The solar cell (14) is divided into a plurality of divided cells such that irradiated portions (14A to 14F) of the divided cells are equal in area, in consideration of the shapes, areas, and number of the window portions (2, 6) and the number of divisions of the solar cell (14).Type: ApplicationFiled: April 13, 2005Publication date: October 18, 2007Inventors: Eiki Murakami, Takeo Mutoh, Takayuki Hasumi, Kenji Shimoda
-
Patent number: 6846998Abstract: An inexpensive switch connecting structure is provided capable of avoiding abnormal wear-off or deformation of a contact spring of a supporting plate even if a movement in a basic shape is placed in a timepiece case having a shape different from the movement and a push button is repeatedly used. The switch connecting structure includes a supporting plate attached to cap a movement of a timepiece and provided with a contact spring having a contact portion at a tip brought into contact with a switch contact portion of a circuit board, and a switch regulating plate provided with a switch spring on an outer periphery corresponding to said contact spring and covering at least part of said supporting plate, wherein said switch spring is flexed by operation of an externally operated component attached to a timepiece case, thereby bringing the contact portion of the contact spring of said supporting plate into contact with the switch contact portion of said circuit board.Type: GrantFiled: January 23, 2003Date of Patent: January 25, 2005Assignee: Citizen Watch Co., Ltd.Inventors: Takayuki Hasumi, Shinichi Yamada, Kenji Shimoda
-
Publication number: 20030143897Abstract: An inexpensive switch connecting structure is provided capable of avoiding abnormal wear-off or deformation of a contact spring of a supporting plate even if a movement in a basic shape is placed in a timepiece case having a shape different from the movement and a push button is repeatedly used. The switch connecting structure includes a supporting plate attached to cap a movement of a timepiece and provided with a contact spring having a contact portion at a tip brought into contact with a switch contact portion of a circuit board, and a switch regulating plate provided with a switch spring on an outer periphery corresponding to said contact spring and covering at least part of said supporting plate, wherein said switch spring is flexed by operation of an externally operated component attached to a timepiece case, thereby bringing the contact portion of the contact spring of said supporting plate into contact with the switch contact portion of said circuit board.Type: ApplicationFiled: January 23, 2003Publication date: July 31, 2003Inventors: Takayuki Hasumi, Shinichi Yamada, Kenji Shimoda
-
Patent number: 6244742Abstract: A self-winding electric power generation watch capable of having an additional function structure besides a time indication and an electric power generation function by virtue of an efficient arrangement of train wheels and motors for watch, electric power generation, and additional function in a watch case. An electric power generation motor 12 for conducting self-winding electric power generation by means of rotation of a rotary weight 41a, a watch motor 11 driven by electric power of the electric power generation motor 12, a storage battery 14 for storing the electric power of the electric power generation motor 12, and a chronograph motor 13 driven by the electric power of the electric power generation motor 12 are arranged in a watch case so as to surround a center part of the watch. Watch train wheels 20 and 30, an electric power generation train wheel 40, and a chronograph train wheel 50 are disposed in a two-layer form in a region surrounded by the motors.Type: GrantFiled: November 23, 1999Date of Patent: June 12, 2001Assignee: Citizen Watch Co., Ltd.Inventors: Shinichi Yamada, Kenji Miyasaka, Takayuki Hasumi, Kazuhide Kinoshita
-
Patent number: 5898646Abstract: A watch has a watch case and a module mounted in the watch case. A dial of the watch is welded to the watch case, and a shield is also welded to the dial for shielding the dial.Type: GrantFiled: October 9, 1996Date of Patent: April 27, 1999Assignee: Citizen Watch Co., Ltd.Inventors: Masahiro Kasaya, Yasuo Kitajima, Takayuki Hasumi
-
Patent number: 5592443Abstract: A watch has a watch case, a module mounted in the watch case, a dial secured to the watch case, and a shield for shielding the dial. The dial has an extending portion outwardly extending from the dial. The dial is secured to the watch case, and the shield is secured to the dial.Type: GrantFiled: November 29, 1994Date of Patent: January 7, 1997Assignee: Citizen Watch Co., Ltd.Inventors: Masahiro Kasaya, Yasuo Kitajima, Takayuki Hasumi