Patents by Inventor Kazutsugu Takamizawa

Kazutsugu Takamizawa 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: 5326099
    Abstract: A golf club having a fiber-reinforced resin club shaft comprising at least a plurality of bias layers having reinforcing fibers therein disposed as to be inclined to an axial direction of the shaft and a plurality of straight layers having reinforcing fibers therein disposed in parallel with the axial direction of the shaft, the bias layers and the straight layers being wound in a tubular form, and a club head, wherein a recess formed at a tip of the club shaft is fitted to a protrusion disposed at a hosel of the club head in an over-hosel arrangement, characterized in that at least one reinforcing layer having reinforcing fibers therein arranged as cross the axial direction of the shaft is disposed only in the tip portion of the club shaft.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: July 5, 1994
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Shinji Yamamoto, Kazutsugu Takamizawa