Patents by Inventor Richard N. Cartwright

Richard N. Cartwright 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: 5324911
    Abstract: An animal surgery table having an electrical heating pad disposed immediately beneath the operating surface and thermostatically controlled by a temperature sensor embedded within the heating pad for preventing heat loss from animals during surgery is disclosed.
    Type: Grant
    Filed: March 30, 1992
    Date of Patent: June 28, 1994
    Assignee: Schroer Manufacturing Company
    Inventors: Dale O. Cranston, Richard N. Cartwright
  • Patent number: 5055988
    Abstract: A surgical lamp having four quartz-halogen lamps and color-correcting glass filters that also shield the light bulbs provides flat shadow-free intense lighting having a color temperature of at least about 3,500.degree. K. for surgical purposes and includes a shroud having lower ventilating openings, interior baffles for directing the flow of warm air along a plurality of chimneys, and a plurality of ventilating holes in the top of the shroud. The surgical lamp may also include a floor stand or ceiling mount, and includes an arm having a number of pivot points that allow the surgeon to adjust the position of the light by grasping the handle and moving the light to the desired location.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: October 8, 1991
    Assignee: Schroer Manufacturing Company
    Inventor: Richard N. Cartwright