Patents by Inventor Alvar T. Westberg

Alvar T. Westberg 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).

  • Pipe joint
    Patent number: 4728127
    Abstract: A pipe joint for thin-walled tubes (13, 14) is provided for transmission of water. The pipe joint includes a male portion (11) and a female portion (12) both of which having pressure cut threads (18, 21). At mounting thereof these portions (11, 12) are threadably engaged so that a seal ring (25) received in an annular extension (23) of the female portion (12) is brought into engagement with a conical portion (16) of said male portion (11) so as to provide tightening of said pipe joint.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: March 1, 1988
    Assignee: Sandvik AB
    Inventor: Alvar T. Westberg