Abstract: A restraint for holding a person in a side-lying position on a bed and comprising a flexible main section with one or more arm members extending therefrom and further including fastening straps for engaging the bed. The restraint is adapted so as to be quickly and easily attached to and removed from a person being restrained in the side-lying position so as to accommodate usage by a singular health care provider.

Abstract: An air to air heat exchanger including a core structure defining two air paths and a pair of fans for drawing air through the core in the paths is formed by a frame structure defined by interlocking tubular frame elements and panels closing the faces defined by those frame elements. The panels are of different types providing simple closing panels, baffles, inlet and outlet ducts, fan support panels and others all of which are basically square for positioning in a face defined by the frame elements so that the heat exchanger construction can be tailored by positioning the various panel types where required.

Abstract: A metal substrate is provided with a single layer of randomly distributed metal bodies bonded to the substrate, spaced from each other and substantially surrounded by the substrate to form active condensation heat transfer surface and body void space.

Abstract: A device is disclosed for recovery of heat from hot shell devices, particularly from motor-compressor units such as used in air conditioners, refrigeration systems and the like and which comprises a heat exchange coil in encircling, contacting heat exchange relationship to the hot shell device with circulation of a fluid through the heat exchange coil to recover normally wasted heat. Heat absorbed can be utilized to heat domestic hot water for home heating or for tap use.

Abstract: A heat exchanger in which water tubes are heated by liquid sodium which minimizes the results of accidental contact between the water and the sodium caused by failure of one or more of the water tubes. A cylindrical protective tube envelopes each water tube and the sodium flows axially in the annular spaces between the protective tubes and the water tubes.

Abstract: Heat transfer tubing adapted to be submerged in a liquid to be boiled as a result of transfer of heat from the interior of the tube to the liquid. The exterior of the tubing has elongated circumferentially extending confined spaces of substantially uniform cross-section and provided with effectively continuous circumferentially extending elongated restricted openings provided at circumferentially spaced zones with substantial enlargements.

Abstract: A heat exchanger of the type having header tanks connected by a number of tubes of heat conductive material which extend between the tanks and which communicate with the tanks by passing through holes in a collector plate forming a wall of each header tank, wherein the collector plates of one or both tanks is formed of a resin compound separated from the interior of its tank by a membrane of a plastics material through which the tubes pass and which is sealed around the tubes, the resin collector plate being bonded to the tubes.