Patents by Inventor Shiro Yada

Shiro Yada 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: 5214833
    Abstract: An inner cutter for a dry shaver of the present invention includes a plurality of arcuate blades, a plastic frame for supporting the blades, a joint portion for connection with a driving system of the shaver. The arcuate blades are formed from a single piece of a thin metal sheet.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: June 1, 1993
    Assignee: Matsushita Electric Works, Ltd.
    Inventor: Shiro Yada
  • Patent number: 4837929
    Abstract: A dry shaver has a readily replaceable head frame supporting an outer shearing foil. The head frame is of a generally rectangular configuration with a pair of opposed end walls between which an inner cutter assembly projects from a shaver housing for shearing engagement with the undersurface of the shearing foil. Each of the end wall is integrally formed with a hook for locked engagement with a corresponding stop on the part of the housing to retain the head frame on the top of the housing. Also formed integrally on each of the end walls is a release lever which is capable of resiliently flexing in a direction of disengaging the adjacent hook form the stop, permitting the removal of the head frame.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: June 13, 1989
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masao Tanahashi, Shiro Yada