Patents by Inventor Masaaki Furumi

Masaaki Furumi 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).

  • Drive-in machine
    Patent number: 11267116
    Abstract: The present invention is to prevent a drive-in position of a fastening member with respect to a material to be driven from being shifted. The drive-in machine according to the present invention comprises: an operation member; a contact member; a striking portion; and a first pressure chamber, the drive-in machine further comprising: a valve element for opening and closing a first passage through which a compressed fluid is sent to the first pressure chamber; a control mechanism having a first state and a second state in which the valve element is controlled; and a restriction mechanism for allowing and restricting the switching between the first state and the second state of the control mechanism. The restriction mechanism has first and second functions for allowing or restricting the control mechanism to be switched from the second state to the first state according to a time from a reference time point.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: March 8, 2022
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Masaaki Furumi, Masashi Nishida
  • DRIVE-IN MACHINE
    Publication number: 20190344415
    Abstract: The present invention is to prevent a drive-in position of a fastening member with respect to a material to be driven from being shifted. The drive-in machine according to the present invention comprises: an operation member; a contact member; a striking portion; and a first pressure chamber, the drive-in machine further comprising: a valve element for opening and closing a first passage through which a compressed fluid is sent to the first pressure chamber; a control mechanism having a first state and a second state in which the valve element is controlled; and a restriction mechanism for allowing and restricting the switching between the first state and the second state of the control mechanism. The restriction mechanism has first and second functions for allowing or restricting the control mechanism to be switched from the second state to the first state according to a time from a reference time point.
    Type: Application
    Filed: October 27, 2017
    Publication date: November 14, 2019
    Applicant: Koki Holdings Co., Ltd.
    Inventors: Masaaki Furumi, Masashi Nishida
  • Trigger for nailer
    Patent number: D804924
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: December 12, 2017
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshimitsu Iijima, Masaaki Furumi