Patents by Inventor Shinichi Umezawa

Shinichi Umezawa 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: 7287335
    Abstract: The sight mounted to a bow portion for archery, which includes an elevation bar fixed to the bow portion and having a first sliding surface and a second sliding surface; a box mounted so as to be slidable along the first sliding surface and the second sliding surface of the elevation bar; an elastic member mounted to the box so as to be opposed to the first sliding surface; and a pressurizing device that pressurizes the elastic member in a direction at an angle with respect to the first sliding surface to deform the elastic member, the box being pressurized by the first sliding surface due to the elastic member and pressed against the second sliding surface. By the archery sight, it can solve the problem that a rattling is generated and leads to poor reproduction performance, resulting in rather poor usability for the athlete.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: October 30, 2007
    Assignee: Yasui & Co.
    Inventors: Masaki Yasuda, Shinichi Umezawa
  • Publication number: 20060026848
    Abstract: The sight mounted to a bow portion for archery, which includes an elevation bar fixed to the bow portion and having a first sliding surface and a second sliding surface; a box mounted so as to be slidable along the first sliding surface and the second sliding surface of the elevation bar; an elastic member mounted to the box so as to be opposed to the first sliding surface; and a pressurizing device that pressurizes the elastic member in a direction at an angle with respect to the first sliding surface to deform the elastic member, the box being pressurized by the first sliding surface due to the elastic member and pressed against the second sliding surface. By the archery sight, it can solve the problem that a rattling is generated and leads to poor reproduction performance, resulting in rather poor usability for the athlete.
    Type: Application
    Filed: August 2, 2005
    Publication date: February 9, 2006
    Inventors: Masaki Yasuda, Shinichi Umezawa