Patents by Inventor Yutaka Yoshigashima

Yutaka Yoshigashima 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: 6609273
    Abstract: The present invention relates to a hinge providing a specified braking force against pivotal motion between two hinged flaps. The hinge includes a bearing body, which has, at its exterior, mountings for a first flap and also a wear-resistant inner surface having slider catches at positions spaced by a specified angle on the same circumference of the inner surface. The hinge also has a shaft with a mounting at one end for a second flap. The shaft is mounted in the bearing body in a manner allowing relative turning, and also has a spring housing hole opening at its outer surface along an axis crossing at a right angle with its longitudinal axis. While turning, a coil spring, which is inserted into the spring housing hole, biases a slider radially outward from the spring housing hole.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: August 26, 2003
    Assignee: Yamamoto Precision Co., Ltd.
    Inventors: Akira Yamada, Yutaka Yoshigashima
  • Patent number: 6473938
    Abstract: This invention relates to a hinge providing a pivotal connection, with a braking force against pivoting between a cylindrical holding body and a shaft body. The hinge includes a cylindrical holding body having a circular section hollow portion and provided with a mounting part, a shaft body having, at its tip, a cylindrical portion in which at least one axially extending slot is formed and a mounting part on the base end side of the cylindrical part, and a spring press-fitted into a portion of the cylindrical part where the slot is formed. The portion of the cylindrical part where the slot is formed, in turn, is press-fitted into the hollow of the cylindrical holding body. Since the independent spring is press-fitted into the cylindrical part of the shaft body, the hinge acts a stable braking force on the pivoting motion between the cylindrical holding body and the shaft body over a long period of time without age-based reduction in elastic force of the spring 3, even if frequently operated.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: November 5, 2002
    Assignee: Mizuki Seimitu Co., Ltd.
    Inventors: Yutaka Yoshigashima, Ken Ono