Patents by Inventor Alan C. Penfield

Alan C. Penfield 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).

  • Outlet boxes
    Patent number: 5571993
    Abstract: An electrical outlet box for raised floors is formed as a metal box (10) in which electrical sockets (20) or switches can be mounted in the bottom; the box has a lid assembly (14) which is vertically adjustable relative to the box by means of a pawl (62, 63) and ratchet (67, 68) arrangement. This arrangement enables rapid adjustment of the vertical distance between the lid and box so that different thicknesses of floor covering can be allowed for.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: November 5, 1996
    Assignee: Caradon MK Electric Limited
    Inventors: Michael A. Jones, Alan R. Pond, Alan C. Penfield, Derek G. McCarty