Patents by Inventor Masaru Yasukawa

Masaru Yasukawa 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: 4295561
    Abstract: This invention provides a conveyor with scrapers for transporting and disposing of machining refuse, the conveyor consisting of a required number of chutes each of which is constructed to be portable and handy.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: October 20, 1981
    Inventors: Masaru Yasukawa, Soji Yasukawa
  • Patent number: 3980187
    Abstract: A hopper for disposing of machining refuse which comprises a hopper body having an inlet zone at one end and an outlet zone at the other end thereof, said outlet end being angled from said inlet end, said hopper body being provided with side walls which extend outwardly towards said outlet end, so that the diameter of the outlet end is larger than the diameter of the inlet end, gate means operatively associated with said outlet end for opening and closing said outlet end and a screw conveyor means rotatably disposed in the lower portion of the hopper, said screw conveyor means being directed toward the outlet of the hopper.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: September 14, 1976
    Inventors: Masaru Yasukawa, Souzi Yasukawa