Patents by Inventor Randolph W. McLaughlin

Randolph W. McLaughlin 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: 5727349
    Abstract: For refrigeration units such as walk-in coolers and freezers, a shell, door frame and door panel assembly adapted to enclosed insulative panel constructions wherein the shell confines a selected standard and/or oversize door frame. The door frames are of composite plastic and steel construction including lightweight external plastic hardtracks forming top, sides and screed bottom, the purposes of the external construction being to confine frame elements which are formed of steel, such that by virtue of the separation of elements forming jamb frames and header frames, applied insulation to the overall assembly is rendered most effective. The standard and oversize door panel assemblies are adapted to encompass a precut retainer by means of inside and outside panels, the latter of which contains backup plates for hinges and for door closers and the like.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: March 17, 1998
    Inventor: Randolph W. McLaughlin
  • Patent number: 5424118
    Abstract: Refrigeration units such as walk-in coolers and freezers, particularly interlocking insulative panels used in construction of such units. The individual insulative panels are characterized by a densified urethane perimeter and a core of low density insulating urethane abutting the perimeter and held in place by a thin outer skin. The densified urethane perimeters of the panels have a tongue-in-groove configuration, as well as a cam locking means, securing abutting panels together.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: June 13, 1995
    Assignee: Mid-South Industries, Inc.
    Inventor: Randolph W. McLaughlin