The invention relates to a heat exchanger for motorized vehicles, comprising: at least one heat-conducting conduit for passage of a first medium, a covering of a thermally conducting porous structure connected to an external side of the conduit for passage of a second medium surrounding the conduit.

A device for heating or cooling multiple single chamber containers or a multi-chamber container. The device includes: a unitary heat or cold source providing a source of heat or cold; heat exchange elements in thermal communication with the heat or cold source and extending away from the heat or cold source; a thermal barrier between each of said heat exchange elements to thermally isolate the heat exchange elements from each other. Each heat exchange element is thermally associated with one or more chambers that are different from one or more chambers associated with other heat exchange elements to thermally isolate the chambers from each other. Preferably the container is a sample or reagent container used in a clinical analyzer, such as a multi-chamber reaction cuvette or a multi-chamber microtiter plate. An incubator assembly, preferably usable in a clinical analyzer, can include the device for heating or cooling.

A burner for gaseous or liquid fuel for heating furnaces includes a ceramic combustion chamber (20) for incomplete combustion of the fuel with primary air from which hot gases exit at high velocity through a constricted outlet (24). The combustion chamber is surrounded by a chamber (42) for the preheated remainder air necessary to complete combustion. Out of this chamber high velocity jets of air issue through nozzle openings encircling the combustion chamber outlet. Energy is saved and simple construction maintained by providing a tubular heat recuperator (4, 7, 9) rearwardly of the combustion chamber in which a cylindrical wall of temperature resistant steel passes to separate the recuperator into two annular chambers (10,11) and extends forward over a large part of the axial length of the combustion chamber so as to form an outer boundary of the remainder air chamber. The forward extension of the cylindrical wall (9) has an inturned rim constituting the ring-shaped nozzle carrier (33) in which the nozzle openings for the remainder air jets are provided. The combustion chamber is clamped between its spring-loaded fuel pipe (16) and the nozzle carrying rim (33) of the cylindrical wall (9).

An electrical appliance housing including a hard plastic housing body defining a switch-actuating aperture. The aperture is sealed with a soft plastic membrane. An actuating button is fastened to a hard plastic base that is bonded to the membrane.

The invention relates to a leaky coaxial antenna (10) comprising an inner conductor (1), a dielectric (2) around the inner conductor (1), and a first shield conductor (4) disposed around the dielectric (2), the first shield conductor having openings (41) distributed in longitudinal direction of the inner conductor (1) and being adapted in that electromagnetic energy passes through the openings (41). A second shield conductor (5) is disposed around or underneath the first shield conductor (4), the second shield conductor (5) being adapted to cover or mask at least a number of the openings (41) of the first shield conductor in a shielded section (S1 - S12). The second shield conductor (5) is arranged discontinuously in the longitudinal direction of the antenna (10) defining uncovered or unmasked portions (AS1 - AS12) of the first shield conductor (4) in the longitudinal direction of the antenna which are adapted in that electromagnetic energy passes through the uncovered portions (AS1 - AS12). Thus, the present invention suggests a two-layer shield for improving the properties of a leaky coaxial antenna with respect to e.g. aerospace applications.

The invention relates to a valuable document or security document (1) that comprises one or more LED elements (2) as a security feature. The LED element (2) is supplied with power by an energy source (3) via lines (4) and (5). Energy source (3) is preferably a passive energy source, that is a solar cell or an antenna. The invention allows for the provision of public features or biometric data for the purpose of identification and/or authentication by personalization of the LED element (2).

The system is assembled of a suitable number of insulation panels and holding rails (3,11) with specifically shaped intersections. One of the rails (3) forming an intersection has a flat central segment provided with two rectangular extensions (6) opposite each other. A step (14) is located between the flat center and the extensions (6) matching the shape of the outer ends (16) of two rails (11) meeting at the central segment. Slots facilitate the release of moisture.

An apparatus is provided for use in a device having a battery and one or more power consuming circuit boards that are powered by the battery. The battery connector includes one or more electrical conduits and a housing. Each electrical conduit includes a battery contact, a first circuit board contact, and as second circuit board contacts. The battery contact is for contacting the battery and forming an electrical connection therebetween. The first and second circuit board contacts are for contacting the one or more circuit boards and forming electrical connections therebetween. The housing retains the electrical conduits.

A lighting device (30) having a housing (12) which includes a lamp means, a battery housing to receive at least one battery and a switch means to open and close a circuit between said lamp means and terminals of said at least one battery when located in said housing. Said lighting device includes a lanyard (110, 112) attached to said housing (12) characterised by said lanyard having a proximal end attached to said housing (12) and a distal end, whereby said distal end or a portion of said lanyard (110, 112) is adapted to be releasably attached to said housing (12).

Equipment (10) for the preparation of a hot beverage comprising a boiler (10) capable of containing a liquid component of the beverage, for example water, a collection container (14) and means (22, 20, 28) defining a delivery path for the liquid component from the boiler to the collection container. The equipment also comprises valve means (40) located along the delivery path for the liquid component comprising a plug (44) which can move between a position in which the delivery path is closed and one in which it is open and means (70, 72; 74, 76; 78) to immobilise the plug in the open position. These means are arranged in such a way that they can be activated and deactivated by a force exerted in the direction of movement of the plug.