Patents by Inventor Takehiko Yamada

Takehiko Yamada 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).

  • Method for removing fastener elements from a slide fastener chain and apparatus therefor
    Patent number: 4246681
    Abstract: In the method of the invention, the slide fastener chain is firmly held by gripping the carrier tape at the very boundary with the lower end of the leg portion of the fastener element with a fixed gripper die jaw and a movable gripper die jaw and then the head portion of the fastener element is forcibly pressed toward the leg portion whereby the bifurcated leg portion is widened by the forcible thrusting of the blade edges of the die jaws into the interstices between the legs and the carrier tape with eventual dividing of the fastener element at the head portion into two pieces to come off the stringer core of the carrier tape easily.
    Type: Grant
    Filed: March 6, 1979
    Date of Patent: January 27, 1981
    Assignee: Yoshida Kogyo K.K.
    Inventor: Takehiko Yamada