Patents by Inventor Philip Broadhead

Philip Broadhead 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 of fitting a valve seating ring and an apparatus therefor
    Patent number: 6259054
    Abstract: A welding machine for weld bonding a valve seating ring in an annular recess of a cylinder head (20) includes an electrode tool (14) on which the ring is located and an overhead support (18, 40, 44, 46) for mounting the cylinder head above the tool. In use the electrode tool is moved upwards into the recess while a welding current is passed across the cylinder head and the electrode tool, so that the ring is weld bonded into the recess, without process spatter entering the cylinder head. There can be two separate electrode tools which operate simultaneously on respective recesses although the weld current may be applied sequentially.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: July 10, 2001
    Assignee: Unova U.K. Limited
    Inventor: Philip Broadhead