Patents by Inventor Hiroshi Tomura

Hiroshi Tomura 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).

  • Puzzle ring
    Patent number: 3977683
    Abstract: A puzzle ring framed of 12 or more straight elongated flat links of similar length and pin joined to each other at their associated ends in a prescribed mode of superposition can be deformed to assume various interesting plane and solid skeletons through simple hand actions by players; the links are preferably made of a flexible material.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: August 31, 1976
    Assignee: Aoki Ltd.
    Inventor: Hiroshi Tomura
  • Ornamental clock
    Patent number: 3952500
    Abstract: Ornamental clock having a parallelogram formed of the short and long clock hands and two sets of links pivotally linking the hands. The profile of the parallelogram changes continuously and variously as the clock hands travel about the dial plate center in order to provide a fantastic aesthetic effect to indicate time in conjunction with the time indicia.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: April 27, 1976
    Assignee: Aoki Ltd.
    Inventor: Hiroshi Tomura