A fail-safe supervisory circuit for a microprocessor-controlled fuel burner has a diode pump circuit (C4, C5, D7, D8) triggered by a resettable monostable (R7, T2, R8, C3) responsive to an encoded signal from the microprocessor, to act as a watch-dog timer. A triggered bistable (D1, T1, R2, IC8) provides a RESET signal on power-on or manually. A direct connection from this bistable to the monostab...

The invention is directed to a rigid article comprising a soft foam member, preferably open cell polyurethane, adhered to at least one surface of said soft foam member, a hard polyurethane resin member; said adhesion being obtained by way of penetration of hard resin affording material into cells of said soft foam member for a distance sufficient to provide a substantially permanent bond between s...

An elevator system, and method of monitoring same, which includes a plurality of elevator cars under the group supervisory control of at least first and second processors, which all share a common memory over a system bus. The first processor periodically monitors its own status, and it sets a predetermined location of the shared memory each time it finds its status to be normal. The second proces...

A shutter arrangement for the card transport of a device for processing data bearing cards, for example a parking meter for processing magnetic cards, includes a shutter member pivotable about an axis (A, A) which is parallel to the plane of the card transport path (13), having a closure portion (41) which is normally spring biased (50) to extend into the transport path (13) and which has a ramped...

An automatic guiding device for an indoor goods transporter comprising a path detector being responsive to stationary guiding facilities and controlling a steering means of the vehicle.

A method for making a composite material. Porous reinforcing material such as fiber material is charged into a container which has an opening; then substantially all of the atmospheric air in the container and in the interstices of the reinforcing material is replaced by substantially pure oxygen; and then molten matrix metal is admitted into the container through the opening so as to infiltrate i...

A sterile package for concentrated compositions is provided which composition is adapted to be diluted under sterile conditions for subsequent administration to a patient. The package is provided with an outlet and an inlet having a filter integrally formed therewith which retains pyrogen and microorganisms so that diluting liquid can be introduced into the package without contaminating the packag...

A colorant formulation is described for mass-coloring high-melting polyesters. It comprises colorant and support for the colorant. The colorant formulation has a recrystallization exotherm of 8 to 55 joule/g between 210 DEG C. and 150 DEG C.

1369152 Roller-and-belt machines T HAYASHI 13 Jan 1972 [14 Jan 1971] 1745/72 Heading B5A A roller device for moulding dough pieces 23 to obtain multi-layered, flattened, or cylindrical products comprises a conveyer belt 8 and a number of rollers 1 between which the dough pieces are fed, the rollers being movable in unison in the same linear direction as the belt at the region whereat the rollers l...

The specification discloses a fire retardant composition, a plastic based thereon, a process making for same and a building component based thereon wherein the fire retardant comprises chemicals which when added to the plastic resin composition will undergo fractional, endothermic reactions under the action of high temperatures. The most preferred chemicals disclosed in the specification, and thei...

A foamed plastic and a method for its production are described. Tne foamed plastic has cavities which consist of open cells or pores. In at least a portion of the cavities, particles of water-insoluble hydrophilic polymer are homogeneously distributed, the particles being swellable to a gel in water. Examples of such polymer particles are granules of cross-linked dextran. The polymer particles are...

The filtering separator having filter elements in the form of bags or pockets is provided with a flue gas feed directed in the housing from bottom to top to the filter elements by a spherical rotor, furnished in whole or in part with bodies, in the lower part of the dust collection chamber. The spherical rotor can be set in rotation at least during the periodic cleaning of the filter surfaces and ...

The invention relates to a method for monitoring the cyclic operation of a memory programmable control (SPS), in which at an output of the memory programmable control (SPS) at least one cycle pulse is generated for each cycle, and the cycle pulses of the memory programmable control are supplied to a retriggerable monostable flip flop (MKS), and the output signals of which are supplied to a display...

The aim is to permit endoscopes fitted with high-frequency surgical apparatuses to be equipped with simple television monitors and commercially available video recorders, which can be acquired at favourable prices and be used without interference for the purpose aimed at here. This is achieved by means of a planar potential-absorbing member which is mounted on the surface of the body of the treati...

The protective device is intended for a driven saw blade of a circular saw, in particular a circular saw bench, and has a protective hood which can be adjusted via a parallel guide link arranged on a support. The protective hood has a chip-extraction passage which has a front suction opening and a rear outlet. A connection piece projecting from the rear outlet is adjustably mounted in the integrat...

A heelholder for a safety ski binding comprising a base member, a carriage mounted on the base member for movement in a direction transverse to the longitudinal direction of the ski on which the binding mounted, a retaining spring biasing the carriage to a central, normal position, a pair of cheeks pivotally mounted on the carriage and carrying a heel-releasing mechanism, and a locking mechanism f...

Guidance control means for an agricultural machine, to provide guidance along rows of plants, comprises feelers (1,1',2,2') which are arranged in pairs, the feelers of each pair being deflectable in opposite directions and being coupled to inductive transmitters (3,3',4,4'). The transmitters (3,3') associated with the left sides of the rows are connected in parallel through respective diodes (12,1...

The sonde comprises a measuring wheel carried by an arm which holds it in contact with the borehole wall and rotates it around the sonde axis so that the measuring wheel follows a helical path on the borehole wall as the sonde is raised in the borehole.

The invention relates to a process for dulling the surfaces of elastomeric, unvulcanised mouldings or semi-finished products in which unvulcanised powder rubber is present as release agent. The process gives good dulling and improved product quality, in particular of articles produced by vulcanisation.

A hardenable epoxy resin comprising a curable epoxy resin, a hardener for the epoxy resin and a polymer of epihalohydrin which composition is characterized in that the amount of the polymer of epihalohydrin in the composition is from 1 to 6 parts per one hundred parts by weight of the epoxy resin and in that the composition also comprises from 2 to 25 parts by weight per hundred parts by weight of...