Abstract: A radiating device for a power amplifier etc. comprising a plurality of fin members fitted to an escutcheon body so as to project therefrom and openings formed on the escutcheon body at positions around the base portions of the fin members, respectively.

Abstract: A natural air cooled rack for vertically disposed printed boards. The rack comprises a plurality of stacked cases for housing printed boards. Each of the cases has draft openings on the upper surface and the lower surface thereof. An interspace is formed between one or more upper cases and the one or more lower cases. At least one supply opening and at least one exhaust opening are formed in the front portion of said interspace. The supply opening communicates with said draft opening on the lower surface of said upper case while said exhaust opening communicates with said draft opening on the upper surface of said lower case. Said exhaust opening is located substantially above said supply opening.

Abstract: Improved furnaces are described in which secondary and tertiary heat exchanges are incorporated into new and existing hot-air furnace systems for controlled cooling of hot combustion products by co-current and countercurrent heat exchanges. Hot combustion products are cooled to a temperature at which latent heat of water vapor contained in combustion gases are substantially recovered.In one embodiment of our invention, a secondary heat exchanger comprises inter alia a closed hollow annular drum concentric with and spaced from a cylindrical combustion chamber, said annular drum having an upper annulus preferably filled with randomly packed refractory material.A second embodiment of our invention comprises a closed double-annuli drum heat exchanger concentric with and spaced from a cylindrical combustion chamber.Finned tube or thermosiphon heat exchangers can be arranged sequentially with the primary heat exchanger combustion chamber to function as a secondary heat exchanger or as a tertiary heat exchanger.

Abstract: A heat sink (50), on which is mounted heat producing elements, such as transistors (40-43), is contained entirely within a cabinet (10) provided with openings (20, 27) positioned directly below and above the heat sink. The heat sink includes a rectangular plate (52) with the transistors mounted on one side and a plurality of integrally formed parallel fins (60) projecting laterally from the plate on the other side and extending diagonally thereacross. The heat sink may be convection cooled by air entering the openings (22) in the bottom of the cabinet and exiting through openings (27) in the top, or the heat sink may be forced air cooled by means of a fan (75) mounted the rear panel (16) which draws air through the openings (22) and across the fins (60).

Abstract: A radiator for dissipating heat transferred from a liquid cooling medium contained therein and that circulates by convection around and absorbs heat energy from an internal heat source. The radiator has a housing that contains the liquid cooling medium and that has two upright end walls and four finned rectangular side walls that define a prism of advantageous aerodynamic form supported with its axis horizontal. The four side walls of the prism intersect in a horizontal plane and a vertical plane, both of which form diagonal planes of the prism. The finned side walls are adapted to transfer heat energy to the surrounding atmosphere and to establish convective flow in paths with minimum flow resistance, that extend upwardly from the intersection of the two lower side walls (i.e., at the nose of the aerodynamic form) at the bottom of the housing and across the entire surface area of the finned side walls to absorb heat energy transmitted to the finned walls by the liquid medium.

Abstract: A tape transport includes a fixed support for receiving a tape cartridge having a tape drive roller engaged with a bi-directional capstan. The capstan, together with a reversible capstan drive motor and a heat sink surrounding the motor, comprise an integral unit which is mounted to the cartridge support through biasing springs which enable the unit to pivot about its center of gravity relative to the support. The capstan, through its c.g. mount, applies a constant force to the tape drive roller indpendently of external forces acting on the tape drive unit. The electrical drive circuit for the capstan motor includes power transistors which are an integral part of the heat sink for maximizing use of the heat sink as a means for dissipating heat generated by operation of the capstan drive motor and power transistors.

Abstract: A heat reclaimer for use with a gas clothes dryer of the type including a rotary drum. The dryer includes a housing in the upper portion of which is a gas burner chamber. The heat generated in the gas burner is moved downwardly through the rotary drum by a blower mounted in the lower portion of the housing then out a discharge stack. The heat reclaimer includes a downwardly open conduit located centrally in the stack and recirculating a portion of the air from the stack back into the gas burner chamber, on the opposite side of the burner and on the downstream side of the heated air passage from the burner to the clothes dryer. An inverted deflector cone is mounted at the lower end of the conduit. The discharge stack has an enlarged diameter at the portion of the stack which contains the conduit. The junction of the conduit and the gas burner chamber is in the form of a long narrow slot to better mix the recirculating air with the air in the gas burner chamber.

Abstract: A stove having a combustion chamber surrounded by four sides and a top and having a warm air conduit extending between opposite sides and opening outwardly of at least one of the sides. Where the stove is to utilize natural convection, the conduits open outwardly of both the sides of the enclosure. An opening is provided in the top or bottom of the warm air conduit remote from its outlet or outlets for effecting draft thereto. A preferred embodiment has two such heating conduits at right angles to each other and with an opening therebetween to further increase draft through the conduits. In the case of forced convection, the conduits need only open from one of the sides.

Abstract: The hot air from a primary combustion chamber is passed through a specialized heat exchange enclosure unit which contains a plurality of spaced, substantially vertically oriented conduits having their upper and lower ends in communication with ambient air. The enclosure receives heated air from the combustion chamber at one side and exhausts smoke and depleted gases at the other side.

Abstract: An internal combustion engine is mounted so as to be vibration isolated. The engine supports a muffler and muffler heat shield assembly, the latter forming part of a combined engine and muffler compartment and being constructed such that the engine exhaust acts to pull ambient air into the compartment, about the muffler and out of an exhaust duct in the top of the heat shield assembly. The compartment also includes a noise baffle for preventing sound waves from travelling directly from the engine and muffler to openings provided for permitting ambient air to enter the compartment.

Abstract: An improved chimney stack of the type having at least one flue through which gases flow and an outer shell for establishing an insulating space surrounding the flue wherein the present improvement includes heat exchanger means secured to the flue and having first and second ports with the first port extending through the outer shell and communicating with the outside air and with the second port communicating with the insulating space surrounding the flue and wherein the heat exchanger means admits and heats outside air and discharges heated outside air into the insulating space surrounding the flue during cool down of the chimney stack whereby minimization of condensation of flue gasses during cool down of the chimney stack is achieved.

Abstract: A process and apparatus for combusting halogenated organic materials wherein such materials are combusted at a temperature of at least 600.degree.C in a refractory-lined furnace, the combustion gases formed are cooled and the acid constituent(s) thereof are subsequently stripped by contact with an aqueous liquid, the furnace being externally cooled such that the temperature of its metal casing lies between 140.degree.C and 375.degree.C thereby minimizing corrosion of the casing.

Abstract: Movable shutting up elements are provided for eliminating the diminishing effect of the wind on cooling equipment erected in open air. The movable openings shutting up elements are adjusted by a control or regulating device according to actual wind conditions, to effect a damming of pressure in the path of the streaming air in front of the heat exchanging surface, enabling the wind energy to be used to aid in increasing the cooling effect. The opening and closing of elements rotatable around a vertical axis may be used to utilize to a greater extent the wind energy in addition to their wind reflecting effects.