Abstract: A heating pad for pets and livestock that includes a plastic surface and an envelope containing a reflective insulation upon which is mounted an electric heating circuit. The reflective insulation includes layers of foil and bubble insulation to store, distribute and direct the heat upward towards the animal while reducing heat loss through the ground or mounting surface. A temperature sensitive switch is provided to conserve energy by permitting power flow between maximum and minimum temperatures, while a lamp is provided to indicate when the unit is drawing energy. The disclosure includes a modification to permit the unit to be used as a fluid storage and warming shelf.

Abstract: A cleaning assembly for cleaning electrically conductive, flexible contact springs around the perimeter of a closure in a shield erected to prevent the passage of unwanted electromagnetic radiation. A pressurized solvent supply system and a vacuum recovery system are mounted in portable cabinet and each is connected via a flexible hose to a hand held cleaning head. The cleaning head comprises a trigger operated spray gun having a support block with a narrow vacuum recovery slot located immediately adjacent to and extending downwardly from the nozzle of the spray gun. The vacuum recovery slot is connected via an internal cavity in the support block to the hose leading to a vacuum recovery container.

Abstract: This specification discloses an electrically heated container, container jacket and method of making same. The container and jacket each include at least three layers of fiber glass mat having resistance heating elements disposed between the first and second mats and a heat dissipating metallic sheet between second and third mats. The mats are separately impregnated with thermosetting polyester resin and cured together to form a rigid, fluid impervious laminated structure.