Patents by Inventor Takafumi Hidaka

Takafumi Hidaka 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: 7985932
    Abstract: A door lock apparatus with safety switch capable of locking a door. A coupling member is pivotally moved about a pivotal shaft by a closing operation by a rotary handle, thereby bringing an engaging portion thereof into engagement with a fixing member, so that a protective door is inhibited from moving in two directions of arrows X, Y including a moving direction of the door. Whether the door is of a slide or pivot type, the door is assuredly locked in a closed state because the door is inhibited from moving in the two directions including the moving direction thereof. If an operation mistake is made to open the door, the force for opening the door is not directly applied to the switch body or the actuator. A safety switch may achieve an increase in durability.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: July 26, 2011
    Assignee: IDEC Corporation
    Inventors: Takeo Yasui, Masaki Nobuhiro, Norifumi Obata, Takafumi Hidaka, Kiyo Hidaka, legal representative
  • Patent number: 7956300
    Abstract: A safety holder is provided that firmly attaches to a safety switch so that safety of a worker is enhanced. The safety holder includes a base body 21 that is inserted into an actuator insertion opening 7, and limits rotation of a drive cam 9 by engaging at a tip end portion (hanging portion 21C) thereof with a concave portion of the drive cam 9 of the safety switch, and a slide body that is movably attached to the base body 21 so as to be insertable into an actuator insertion opening 8 with the base body 21 inserted in the actuator insertion opening 7, and when the slide body is inserted into the actuator insertion opening 8, that enters and engages with an engagement hole 36 of the base body 21 whose tip end portion (insertion arm 34) is being inserted into the insertion opening 7.
    Type: Grant
    Filed: September 4, 2006
    Date of Patent: June 7, 2011
    Assignee: Idec Corporation
    Inventors: Takafumi Hidaka, Kiyo Hidaka, legal representative, Norifumi Obata, Masaki Nobuhiro, Takeo Yasui, Masahiro Ishizaki
  • Publication number: 20100095719
    Abstract: A door lock apparatus with safety switch capable of assuredly locking a door is provided. A coupling member is pivotally moved about a pivotal shaft by a closing operation by way of a rotary handle, thereby bringing an engaging portion thereof into engagement with a fixing member, so that a protective door is inhibited from moving in two directions of arrows X, Y including a moving direction of the protective door. Whether the protective door is of a slide type or a pivot type, the protective door is assuredly locked in a closed state because the protective door is inhibited from moving in the two directions including the moving direction thereof. Further, if an operation mistake or the like is made to forcibly open the protective door, the force for opening the protective door is not directly applied to the switch body or the actuator. Hence, a safety switch may achieve an increased in durability.
    Type: Application
    Filed: July 7, 2006
    Publication date: April 22, 2010
    Applicant: IDEC Corporation
    Inventors: Takeo Yasui, Masaki Nobuhiro, Norifumi Obata, Takafumi Hidaka, Kiyo Hidaka
  • Publication number: 20090321227
    Abstract: A safety holder is provided that firmly attaches to a safety switch so that safety of a worker is enhanced. The safety holder includes a base body 21 that is inserted into an actuator insertion opening 7, and limits rotation of a drive cam 9 by engaging at a tip end portion (hanging portion 21C) thereof with a concave portion of the drive cam 9 of the safety switch, and a slide body that is movably attached to the base body 21 so as to be insertable into an actuator insertion opening 8 with the base body 21 inserted in the actuator insertion opening 7, and when the slide body is inserted into the actuator insertion opening 8, that enters and engages with an engagement hole 36 of the base body 21 whose tip end portion (insertion arm 34) is being inserted into the insertion opening 7.
    Type: Application
    Filed: September 4, 2006
    Publication date: December 31, 2009
    Applicant: IDEC CORPORATION
    Inventors: Takafumi Hidaka, Kiyo Hidaka, Norifumi Obata, Masaki Nobuhiro, Takeo Yasui, Masahiro Ishizaki