Patents by Inventor Iain W. Kirkwood

Iain W. Kirkwood 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).

  • Transition pieces
    Patent number: 5104155
    Abstract: A transition piece for attaching branch pipes, valves, etc. to a pipe or the like at a position intermediate its ends is formed as a one-piece component by forging, preferably drop-forging, and comprises a flanged end portion, a tapered neck portion and a flared neck portion, said tapered neck portion tapering from the flanged end portion towards a waist portion intermediate the ends of the component, said flared neck portion flaring from the waist portion towards the end of the component remote from the flanged end portion, said component having a throughbore running the length of the component.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: April 14, 1992
    Assignee: Promat Engineering Services Limited
    Inventor: Iain W. Kirkwood