Patents by Inventor Hiroyuki Awaji

Hiroyuki Awaji 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).

  • Method and device for manufacturing rubber bend pipe
    Patent number: 5424015
    Abstract: A method for manufacturing a curved rubber pipe is provided with a guide member (3) arranged concentrically with a mandrel (2, 402). A straight rubber semi-finished product (4) of an unvulcanized or semi-vulcanized rubber is inserted into the guide member (3). A die lubricant can be applied only to the inside of the rubber semi-finished product (4) over its whole length. The rubber semi-finished product (4) is fitted on the mandrel (2, 402) by pushing the product by a head (7) mounted on a leading end of an arm (6). One end of the curved rubber pipe (1) is gripped after vulcanizing by a gripping member (10) and is extracted from the mandrel (2, 402). By this method, it is possible to fit and smoothly extract the rubber semi-finished product (4). The method can also easily be automated.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: June 13, 1995
    Assignee: Yamashita Rubber Kabushiki Kaisha
    Inventors: Nobuya Matsuda, Kohji Chida, Shigeki Toyoda, Hiroyuki Awaji, Tetsuo Hasegawa, Kenji Shimizu, Seishiroh Sugie