Patents by Inventor Kunihiko Terasawa

Kunihiko Terasawa 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: 4765446
    Abstract: A hydraulic damper of the adjustable damping force type includes a cylinder, a piston rod having an end portion inserted into the cylinder and a bore formed therein and extending in the axial direction thereof, a piston secured to one end portion of the piston rod and partitioning the interior of the cylinder into two chambers, a passage for communicating the two chambers through the bore, at least one pair of orifices disposed midway along the passage, an adjusting rod rotatably inserted into the bore and adapted to be operated from the side of the other end portion of the piston rod, and a shutter secured to the adjusting rod and having a pair of openings radially formed so as to open the at least one pair of orifices. The at least one pair of orifices and the pair of openings are arranged such that either one of the pair of orifices starts to open and close after the other.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: August 23, 1988
    Assignee: Tokico Ltd.
    Inventors: Hiroshi Murata, Kunihiko Terasawa