Patents by Inventor John C. Maddocks

John C. Maddocks 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).

  • Patent number: 5056437
    Abstract: A new and useful device for initializing an automated warehouse system when the system is in its "power-up" mode. The device of the invention initializes the system at "power-up" by sensing the midpoint of a specially formed gap between two strips of retroreflective tape, and establishing the midpoint of that gap as the floating, zero offset, reference point for the system.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: October 15, 1991
    Assignee: Republic Storage Systems Company, Inc.
    Inventor: John C. Maddock
  • Patent number: 4156889
    Abstract: An improved electric mirror lamp comprising a concave mirror on the focus of which a light source, for example an incandescent filament is fixed, and the lamp also includes locating means by which its position in a lamp holder is determined and support means holding the mirror at a fixed position relative to the locating means. A support mirror is an integral moulded body having portions adapted to position the locating of the mirror. The locating means may be constituted by a locating ring secured to an end cap and the support means may include indentations which engage and retain the end cap. The electric light source or bulb may be replaceable and the mirror may be formed directly on an appropriate concave surface of the support means.
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: May 29, 1979
    Assignee: Thorn Electrical Industries Limited
    Inventors: Alex L. Halberstadt, John C. Maddocks