A solenoid actuator comprises a permanent magnet 40 which is coupled to a switch member 22 and which is movable upon energisation of a coil 14 from a first to a second position to cause actuation of the switch member 22. In one embodiment, the permanent magnet 40 is coupled to the switch member by a slidable member 28 and is attracted to its second position by a cup shaped yoke 42 which is coaxial...

X-ray equipment has a tubehead 12 associated with a local repeater warning system 18 to give a preliminary warning that energisation of the tubehead 12 is imminent, and a kill switch on or adjacent the tubehead 12 to abort or inhibit energisation. By this means, not only is a warning given in the vicinity of the tubehead 12, but the source of the danger is identified. Thus, personnel caught in the...

An abrading apparatus formed from sheet stock and processes for making the same are disclosed. The abrading apparatus has a base with a plurality of cantilevered members extending from the periphery of the base with each cantilevered member formed to provide a discontinuous abrading surface along the periphery of the apparatus. A process for making this abrading apparatus includes the steps of for...

A torque distribution control system for a four-wheel drive vehicle has an engine output controller (22) which controls the output of the engine of the vehicle, a braking controller (25) which separately controls the braking forces applied to the left wheels and the right wheels and/or the braking forces applied to the front wheels and the rear wheels. A torque distribution changing system (26) de...

A reinforcement for thin film materials is provided by coating the films (10) with an ink-type material (12). Ink coating of moisture vapor-permeable films such as polyurethane allows for a film suitable for use on skin which has an optimal rate of moisture vapor transmission. If desired, an adhesive can be provided on the ink-coated polyurethane membrane, and such materials are suitable for retai...

In einem Gehäuse (2) mit einem Deckel (3) ist ein poröser Körper (6) eingelegt, durch welchen ein Faden (8) zum Aufbringen eines Mediums geführt wird. Das Medium wird durch eine Druckleitung (5) dem Präparator (1) zugeführt. Zum Einlegen des Fadens (8) kann der Deckel (3) des Gehäuses (2) geöffnet und der Faden (8) durch einen Schlitz in den Körper (6) eingebracht werden, was durch offene Fadenfüh...

An apparatus for reducing materials comprising knives (3) which are mounted helically about two horizontal and parallel shafts (2). The knives (3) which have two U-shaped blades (8) cooperate with fixed knives (6) which are arranged in the area between the two shafts (2). When the materials to be reduced are introduced from the upperside of the apparatus (1) a reduction of the materials is perform...

The utility model relates to an auxiliary heating apparatus of solar water heaters, which is characterized in that the auxiliary heating apparatus of solar water heaters is designed into an auxiliary heating apparatus which can float on the warm water arranged in a heat insulating tank; simultaneously, a day light sensor is also arranged on the circuit of the auxiliary heating apparatus of solar w...

A bipolar electrode of an electric accumulator comprises a base (1) of a non-electroconductive material with an opening (2) in it, a positive (3) and a negative (4) active material situated on different sides of the base (1). A current conducting element (5) is hermetically secured in the opening (2), contacting by its opposite sides (6, 7), respectively, with the positive (3) and the negative (4)...

A ski fastening includes a rear engagement member (1,2) provided with a lever (4) with which a jaw (5) is associated and engages the heel (6) of a boot. The rear engagement member is constituted by a first body (2) which is slidably associated with a base (7) which is rigidly associated with the ski and to which the lever is pivoted. The first body includes an inclined plane (14) which is connecte...

A process for the gasification of sewage sludge or other carbon-containing waste materials in a gasifier (1) is described. A solid fuel and oxygen-containing gas are also fed into said gasifier. The residues formed during gasification collect at the bottom of the gasifier in the form of molten slag. Gasification takes place in a fluidized bed (9) formed above the slag bath and constituted by the d...

A process for producing asphalt-blended polyurethane foams which comprises introducing starting foaming materials for polyurethane foams containing a polyoxyalkylene polyol and an organic isocyanate either as respective individual ingredients or as a prepolymer into an agitation mixing chamber of a foaming apparatus, while introducing a previously heated and melted asphalt into the agitation mixin...

A pool cue chalk holder is disclosed including a clip that is selectively attachable to an article of clothing and complementary first and second hook and loop fastening elements. The first and second fastening elements are secured respectively to the clip and to a pool cue chalk and are selectively engageable with each other to detachably fasten the chalk to the clip.

A safety ski binding having a release member (17) actuable in response to forces or moments exceeding a threshold value, a carriage (4) biased forwardly by a carriage spring (5), a sole holder (18) mounted on the carriage (4) and biased to an open position, a locking lever (31) mounted on the carriage (4) for releasably locking the sole holder (18) in the open position, a locking lever spring (30)...

A method and apparatus used to detect errors in a signal transmitted over a single wire. All transient errors are detected when the effect of the transient lasts for at least one cycle and not more than five cycles. Transient errors of longer duration will be detected if the level of the original signal at the start of the transient is different from that at the end of the transient. Stuck faults ...

A method of testing security papers with respect to the positions of a safety thread and water marks to detect errors in the paper is performed by a linewise scanning of a finished paper web. The web has at least two point like measuring marks inserted into it in addition to the water marks, whereby impulses which are originated from these measuring marks are evaluated and the sheet width and the ...

There is disclosed an error detection circuit for a decoder which includes a plurality of circuit units connected in cascade, each of the circuit units having a first and a second input node, a selection input node connected to an associated one of output terminals of the decoder, and a first and a second output node, the first and second input nodes being connected respectively to the first and s...

Polyurethanschaumstoffe werden durch Umsetzung von 1) Polyisocyanaten mit 2) Dispersionen von Polymeren enthaltenden höhermolekularen Hydroxylverbindungen, die durch Umsetzung von Mono- und/oder Polyisocyanaten mit primäre und/oder sekundäre Aminogruppen aufweisenden Polyaminen und/oder Hydrazinen und/oder Hydraziden und/oder Alkanolaminen in einer 1 bis 8 primäre und/oder sekundäre Hydroxylgruppe...

Oriented polyester film primer coated with a hydrolyzed aminosilane IS disclosed. The aminosilanes in the unhydrolyzed state have the formula: (R<1>)aSi(R<2>)b(R<3>)c wherein R<1> is a functional group with at least one primary amino group; R<2> is a hydrolyzeable group such as a lower alkoxy group, an acetoxy group, or a halide; and R<3> is a nonreactive, nonhydrolyzeable group such as a lower a...

Support structure for sofa beds, with pull-out, raisable auxiliary bed, which comprises an upper frame (6) carrying support means for a mattress and connected, by means of rods (9a,b) linked as a parallelogram, to two lower bars (10) transverse to the larger dimension of the frame, blocking means (25) being present for the raised position and balancing means for the weight of the frame, the sofa b...