Patents by Inventor Ari Tuominen

Ari Tuominen 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 a mould for forming an expansion, such as a socket, in a pipe, and a plastic pipe
    Patent number: 5601776
    Abstract: The present invention relates to a method and a mould for forming an expansion, such as a socket, in a plastic pipe, and a plastic pipe. According to the method, the heated end of the pipe is placed in an external mould (2) and pressed against the mould surface (6) to form a socket. Two grooves (8, 9) can be formed in the socket by a simple method, using a mould ring (12) which is separate from the other parts (3, 4) of the mould and by means of which the grooves of the socket are formed. The ring is simultaneously locked into the socket (7), thereby functioning as a reinforcement ring.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: February 11, 1997
    Assignee: Uponor Innovation AB
    Inventor: Ari Tuominen