An improved retractable tamper resistant annunciator that can be mounted flush in a supporting structure is described. The annunciator mechanism includes a housing that has an actuatable cover. Signaling devices are enclosed within the housing, and can be selectively actuated when the cover is opened. A mechanism to open and close the cover to expose the signaling devices or to cover the signaling...

An optoelectronic apparatus comprising a casing (110, 340) and an optical unit (100) on which at least one component (300) having high heat emission is disposed. This component (300) is initially linked with clearance (360) with theoptical unit (100), by first fastening means (330), and in a second step by second fastening means (320) the component (300) is fixedly secured to the casing (110,340) ...

A braking system (5) for an electric motor (1) comprises a plate-shaped driver (6), which drives a brake disc (10) by means of the motor (1). The brake disc (10) in turn drives a unit, such as a cutting unit of a rotary lawn mower. Between the driver (6) and the brake disc (10) there is some play, thanks to which ramp surfaces (19), that are pressed together by a helical spring (20), can move the ...

A braking system (5) for an electric motor (1) comprises a plate-shaped driver (6), which drives a brake disc (10) by means of the motor (1). The brake disc (10) in turn drives a unit, such as a cutting unit of a rotary lawn mower. Between the driver (6) and the brake disc (10) there is some play, thanks to which ramp surfaces (19), that are pressed together by a helical spring (20), can move the ...

A heat exchanger of the type used for a condenser in a vehicle air conditioning system includes a pair of parallel, tubular headers which are spaced apart with a plurality of refrigerant flow tubes extending between the headers. The flow tubes have upper and lower flat sides, and forward and rearward outermost edges. The forward and rearward outermost edges longitudinally extend the length of the ...

The present invention extends the PNNI protocols to support hierarchical multicast routing and signaling for ATM networks. The invention utilizes an extension to a core-based tree algorithm. Instead of a single core node, core nodes are maintained in each peer-group and at each level of the hierarchy. The advantage of this is that one single core node is not overloaded. Additionally, this increase...

An apparatus for performing a laser myocardial revascularization of a human heart comprises a hand-held device with an elongated flexible lasing assembly including an axially movable fiber bundle which can be placed into the chest cavity of a patient. At the distal head end of the device laser energy from the distal end of the fiber bundle is initially reduced to form a relatively small opening in...

A compound of formula I or an isomer or an acid addition salt thereof is claimed wherein: R1 and R2 are independently hydrogen, halo, alkyl, alkoxy, nitro, trifluoromethyl or -NR8R9; R3 is alkyl, cycloalkyl or -CO-R13; R4 and R5 are independently hydrogen or alkyl; R6 and R7 are independently hydrogen, chloro or bromo and R8, R9 and R13 are as defined in the specification provided that if R6 and R...

A drive unit (1) for a handheld working tool, such as a chain saw, trimmer or hedge trimmer, essentially comprising a housing part (2) with a fuel tank (3) and an engine unit (4) with a fuel supply unit (5) such as a carburetor (5), a muffler (6), and a crankcase scavenged combustion engine (7) with a cylinder (8), piston (15) and crankshaft. The engine (7) has at least one inlet port (9) located ...

A drive unit (1) for a handheld working tool, such as a chain saw, trimmer or hedge trimmer, essentially comprising a housing part (2) with a fuel tank (3) and an engine unit (4) with a fuel supply unit (5) such as a carburetor (5), a muffler (6), and a crankcase scavenged combustion engine (7) with a cylinder (8), piston (15) and crankshaft. The engine (7) has at least one inlet port (9) located ...

An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core. The rejection bandwidth can be narrowed without increasing the grating length by forming the radia...

La présente invention a trait à une composition cosmétique pour le traitement des fibres kératiniques, en particulier des cheveux, comprenant au moins un polymère fixant et au moins un amidon amphotère, ainsi qu'au procédé de traitement des fibres kératiniques à l'aide de cette composition.; Cosmetic hair care compositions comprise cosmetically acceptable vehicle, a fixative polymer (I) and at lea...

The process comprises measurement of drainage in a first step without the application of pressure then compressing the partially dewatered material using a hydraulic cylinder to force out liquid, and the amount of liquid removed from the material. Also claimed is a device comprising a cylinder (2) filled with a set volume of sample material, sensor (7) and first valve (8) for stopping the flow of ...

Water purification process involves adding a carbon source to the water for denitrification and then passing the water through a granular filter material bed. A small amount of methanol is added as the carbon source so that some is left in the water after is passes through the filter bed to reduce or prevent the growth of organisms in the area downstream of the filter and on the walls and pipes in...

The locator of a subcut channelled catheter under a patient's skin, has a controller (7) with a central hole only slightly larger in diameter than the external diameter of the catheter (9) and directed so as to accommodate this. The controller (7) has at least two apertures perpendicular to the central hole and designed to permit fixing of the controller (7) to the patient's skin. The controller (...

A method for producing whiskers in large vols. having overall compsn. (Me1-x-yMe'xMe''y...etc)C1-zNz, with Me, Me' and Me'' equal to different transition metals such as Ti, Ta, Nb, Zr and Hf respectively comprises: (a) intimately mixing: (i) a carbon source; (ii) a mixt. of two or more transition metal oxides, hydroxides or alkali cpds. in amts. satisfying the stoichiometric requirement of the des...