A multifrequency radiating device comprising at least one radiating element (11) of a first type and at least one radiating element (12) of a second type, the elements being associated on a common surface (10) in order to constitute an array antenna. The radiating elements of the first type (16) are elements of the microstrip type and the elements of the second type (19, 20) are elements of the wire type, the radiating elements of the first type (16) acting in a first frequency range and the rad...

A radiation burner or glow radiator, in which a combustible mixture of gas or fuel vapor and air is supplied from a distribution chamber to a permeable burner head, which comprises an insulating layer of heat-resisting and/or fireproof material, for instance a fiber fleece, provided with discrete passage apertures for the combustible mixture, the burner head also comprising a heat-radiating surface of heat-resisting and/or fireproof material, consisting of one or more hollow moulded bodies provi...

A central heating radiator assembly comprises a radiator panel (1) having a liquid inlet (25, 7) and liquid outlet (7, 21). Attachment means (29) are for attaching the panel to a wall (27) and pivot means (29) enable the panel to be rotated away from the wall about an upright axis. The invention also provides a method of installing a central heating radiator assembly and a kit of parts for such installation.

A combination of cassettes for insulation of radiator front faces without reducing the radiator heating effect. The combination of cassettes is constructed so that the metal plates fastened between the cavities (3) of cover (2) are folded so that lap (13) at the upper end of the side edge lifts the metal plate (1) upper edge against the sides (17) of cover (2) and lap (8) in the lower side edge restricts the distance between metal plate (1) lower edge and the cover (2) whilst the tongue (9) pres...

The method for brazing aluminum radiators with brazing alloys comprises the steps of suspending said radiators and continuously displacing them through successive portions of a single lengthwise elongated furnace cavity with rear and front surfaces of said radiators directed at right angles with respect to successive streams of hot gas blown into each of said successive portions of said furnace at different temperatures and in adjacent relationship therebetween. This disclosure relates to a nove...

A fin material for automobile radiators comprising less than 0.05% by weight of lead; from 0.001 to 0.05% by weight of one or more elements selected from a group consisting of silver, cadmium, chromium, magnesium, nickel, antimony, tin, zinc and rare-earth element; and the remaining copper.

A water filter for radiators is provided which is characterized by the fact that it is fitted with a thick internal cylindrical mesh inserted into another cylindrical mesh similar to the foregoing but with a finer mesh. Both meshes are fixed by supports placed by pressure between both means and a coupling flange.

Corrosion-resistant copper alloys for the manufacture of radiators are composed of, by weight, 25-40% zinc, 0.005-0.070% phosphorus, 0.05-1.0% each tin and aluminum, and the balance copper and inevitable impurities.

A microwave radiator in the form of a parallel plate transmission system with an array of radiating slots in one plate is used to transmit scanning planar radio beams. The radiating structure is shaped to form part or the whole of a cylindroid. The array of slots may be on the convex or concave side of the radiator, which is preferably curved in the plane of the axis of the beam. Scanning through 360.degree. is possible with a full cylindroid radiator having the array of slots extending over all...

A dielectric loaded edge-slot radiator whose exterior dimensions are adjuble to allow flush mounting on cylindrical and conical bodies which can be frequency tuned either electrically or mechanically. This is done by varying the number of inductive posts which are used as boundaries for the individual elements making up the antenna. A single inductive probe whose characteristic impedance is matched to the rf source is coupled so as to simultaneously excite all of the radiating elements in phase....