Patents Assigned to Norfields Corporation
  • Patent number: 6062008
    Abstract: An apparatus for applying magnetic therapy to a horse's foot. A bottom panel is shaped consistent with the shape of an equine foot. A side wall is coupled along one edge to the bottom panel. A heel flap extends from the bottom panel and may rotate relative thereto such that the heel flap covers the heels of the foot when worn. At least one of, and preferably all of, the heel flap, the bottom panel, and the side wall contain magnetic material, which creates a magnetic field that acts on the foot when the apparatus is worn.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: May 16, 2000
    Assignee: Norfields Corporation
    Inventor: Joanne H. Nor
  • Patent number: 4315050
    Abstract: A method of bonding a sheet of hard to bond thermoformable material to a core made of expanded thermoformable material is disclosed. The sheet of thermoformable material is heated to its glass transition temperature and then pressed into voids in the core forming a mechanical bond in addition to the chemical bond.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: February 9, 1982
    Assignee: Norfield Corporation
    Inventor: Rosemary Rourke
  • Patent number: 4269586
    Abstract: A platen capable of being heated is disclosed wherein fluid flow zones containing heat exchange channels are individually sealed. The heat exchange channels in the platen are connected by a connecting channel sized so that the distance from the connecting channel to a vent passage or a vented opening in the platen is not less than the distance from the vent passage or vented opening to the heat exchange channel. The sealing of the fluid flow zones is accomplished with plugs and end plates which are welded to the platen and then welded together with a fillet weld.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: May 26, 1981
    Assignee: Norfield Corporation
    Inventor: James F. Ronayne
  • Patent number: 4264293
    Abstract: A vented platen capable of being heated or cooled is disclosed wherein a plurality of heat exchange channels bored through the width of a plate member are arranged in a plane. The plate member has a plurality of openings on a surface that are vented by vent passages disposed on a plane substantially parallel to the plane of the heat exchange channels.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: April 28, 1981
    Assignee: Norfield Corporation
    Inventor: Rosemary Rourke
  • Patent number: 4164389
    Abstract: In order to make large panels of expanded thermoformable material in a process in which a blank of the material is placed between two heated mold plates, the blank adhered to the plates by hot tack adhesion; the plates separated and the expanded material cooled, while maintaining commercial tolerances, the mold plates are supported on elongated mounting studs.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: August 14, 1979
    Assignee: Norfield Corporation
    Inventor: Donald R. Beasley
  • Patent number: 4113909
    Abstract: In order to make large panels of expanded thermoformable material in a process in which a blank of the material is placed between two heated mold plates, the blank adhered to the plates by hot tack adhesion; the plates separated and the expanded material cooled, while maintaining commercial tolerances, the mold plates are supported on elongated mounting studs.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: September 12, 1978
    Assignee: Norfield Corporation
    Inventor: Donald R. Beasley