Patents by Inventor Hidenori Maeba

Hidenori Maeba 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).

  • Plastic coupling for plastic tubing
    Patent number: 5472244
    Abstract: A plastic coupling for plastic tubing having a groove annulus formed between a first circumferential groove on the outer periphery of the enlarged diameter portion of a connection tube and a second circumferential groove on the inner periphery of a cap nut 5 when the cap nut 5 is mounted on a joint body, and an enlargeable split ring having an internal diameter smaller than the external diameter of the enlarged diameter portion and loosely fitted into the second groove, the split ring being adapted to slide on the enlarged diameter portion to the first groove until the split ring falls within the first groove and is located within the groove annulus when the cap nut is mounted on the joint body.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: December 5, 1995
    Assignees: Nisso Engineering Co., Ltd, Fluoroware, Inc.
    Inventors: Yasukatsu Nishikata, Hidenori Maeba, Takao Nakazawa