Patents by Inventor Toyomi Tanaka

Toyomi Tanaka 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).

  • Filling method of particulate material into valved packing bag and apparatus employed therefor
    Patent number: 4498509
    Abstract: In the particular filling method disclosed in the specification a side valve type packaging bag is filled by inserting a filling tube into the bag valve, expanding a rubber tube surrounding the filling tube to form a seal with the valve opening, supplying particulate material to the interior of the bag and rotating the filling tube to distribute the particulate material within the bag, and then wetting an adhesive in the valve before withdrawing the filling tube from the bag. The filling apparatus according to the invention includes a filling tube which is mounted for rotation about its axis on a support plate and has a pouring spout directed at an angle to its axis and a pneumatic piston connected to the filling tube to rotate the tube about its axis and weighing mechanism for detecting filling of the bag.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: February 12, 1985
    Assignee: Nakajima Seisakusho Co., Ltd.
    Inventors: Katsuhiko Kojima, Toyomi Tanaka, Shigeo Nakajima