Patents by Inventor Fredrik Hellman

Fredrik Hellman 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 connecting device
    Patent number: 7032933
    Abstract: A pipe connecting device designed for detachable, sealing assembly of two pipe ends which device consists of an outer part and an inner part inserted axially into the outer part and cooperating therewith for internal connection to the first pipe end. The cooperating contact surfaces of both the inner part and the outer part are conical in shaped. Furthermore, means are arranged to prevent axial movement between the conical contact surfaces.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 25, 2006
    Assignee: AB Faluplast
    Inventor: Fredrik Hellman
  • Pipe connecting device
    Publication number: 20050046190
    Abstract: A pipe connecting device designed for detachable, sealing assembly of two pipe ends which device consists of an outer part and an inner part inserted axially into the outer part and cooperating therewith for internal connection to the first pipe end. The cooperating contact surfaces of both the inner part and the outer part are conical in shaped. Furthermore, means are arranged to prevent axial movement between the conical contact surfaces.
    Type: Application
    Filed: December 20, 2001
    Publication date: March 3, 2005
    Inventor: Fredrik Hellman