Abstract: The invention relates to a composite material consisting of at least three constituents, a substrate material, a first fibrous reinforcing material and a second reinforcing material, wherein the first fibrous reinforcing material has a lower thermal expansion coefficient than the second reinforcing material and wherein the second reinforcing material has a lower electrical conductivity than the first reinforcing material, wherein the composite material is provided for use in building components of force and motion transmission, in particular those building components of force and motion transmission which come into contact with ultrapure water.

Abstract: The invention relates to a composite material consisting of at least three constituents, a substrate material, a first fibrous reinforcing material and a second reinforcing material, wherein the first fibrous reinforcing material has a lower thermal expansion coefficient than the second reinforcing material and wherein the second reinforcing material has a lower electrical conductivity than the first reinforcing material, wherein the composite material is provided for use in building components of force and motion transmission, in particular those building components of force and motion transmission which come into contact with ultrapure water.

Abstract: A gear pump has two engaging gearwheels disposed between a suction chamber and a pressure chamber, with the gearwheels borne on bearing axles that are connected to the gearwheels. The gearwheels and the bearing axles are each manufactured of the same material as a homogenous workpiece. This provides for both simple construction of the gear pump and good pump operating properties. Preferably the gearwheels and bearing axles are made of a synthetic material.

Abstract: The invention relates to a gear pump with two engaging gearwheels (9, 10) between a suction chamber and a pressure chamber, whereby the gearwheels are borne on bearing axles (11, 12) connected to the gearwheels. In accordance with the invention the gearwheels and the bearing axles are each manufactured of the same material as a homogenous workpiece. This allows simple construction of the gear pump with good operating properties at the same time. Preferably the gearwheels and bearing axles are made of synthetic material.

Abstract: The present invention relates to an apparatus for processing sheet material, in particular bank notes, papers of value and the like. In the inventive apparatus, an automatic return of sheet material to a second or, generally speaking, further check is provided, which obtains relief for an operator of the apparatus. The relief results from a reduction of the rate of indeterminable cases or the total sheet material to be manually reworked, since any disturbances or faulty operating conditions existing at the time of a first or, generally speaking, prior check of sheet material normally no longer exist, or exist in a changed form, at the time of a second or, generally speaking, further check of the sheet material. The correct check and assignment of the sheet material is thus possible in the second or, generally speaking, further check.

Abstract: A method and an apparatus for verification of arithmetic digital circuits is disclosed, wherein a first circuit, called a specification, is compared for equivalence with a further circuit called an implementation, with equivalence occurring when and only when the specification and implementation always produce the same output signals for the same input signals. The gate level description of the specification and implementation are converted to a network of elementary arithmetic 1-bit operations (XOR, half-adders, full adders) and the equivalence of the specification and implementation is identified in that a comparison of the resultant networks from elementary arithmetic 1-bit operations is carried out directly.

Abstract: In the inventive apparatus, an automatic return of sheet material to a second or, generally speaking, further check is provided, which obtains relief for an operator of the apparatus. The relief results from a reduction of the rate of indeterminable cases or the total sheet material to be manually reworked, since any disturbances or faulty operating conditions existing at the time of a first or, generally speaking, prior check of sheet material normally no longer exist, or exist in a changed form, at the time of a second or, generally speaking, further check of the sheet material. The correct check and assignment of the sheet material is thus possible in the second or, generally speaking, further check.

Abstract: The invention relates to a method and an apparatus for verification of arithmetic digital circuits, wherein a first circuit, called a specification, is compared for equivalence with a further circuit called an implementation, with equivalence occurring when and only when the specification and implementation always produce the same output signals for the same input signals. The gate level description of the specification and implementation are converted to a network of elementary arithmetic 1-bit operations (XOR, half-adders, full adders) and the equivalence of the specification and implementation is identified in that a comparison of the resultant networks from elementary arithmetic 1-bit operations is carried out directly.

Abstract: A method for verifies that two integrated circuits are functionally equivalent by extracting equivalencies between internal nodes of the two circuits. Values are assigned to internal nodes in the first circuit and the effects of the assignments are determined in the rest of the first circuit and the second circuit. These effects, or implications, are analyzed to find internal equivalents between the first and second circuit. These steps are repeated with different values assigned to different nodes in the first circuit. The set of stored implications is used to determine if the two circuits are functionally equivalent.A method is also disclosed for using the equivalencies, or indirect implications determined above to remove redundancies from the second circuit using a set of predetermined transformations. Based on an indirect implication a particular transform is selected and applied to the second circuit.

Abstract: A coupling between a motor-driven shaft and a mandrel for winding or unwinding reels has a recess provided in the end portion of the shaft and serving to receive the end portion of the mandrel. The end portion of the shaft has a wheel which is pivotable between an inoperative position to permit insertion of the end portion of the mandrel into the recess and an operative position in which the end portion of the mandrel is confined in the recess. The end portion of the mandrel has a non-circular peripheral surface which is surrounded by the complementary surface of the end portion of the shaft when the end portion of the mandrel is properly inserted into the recess and the wheel is held in the operative position.

Abstract: A torque transmitting connection between a driving shaft and the core of a reel has a barrel-shaped stub which is rigid and coaxial with the core and extends into a complementary socket of a female coupling element at the respective end of the shaft. The female coupling element has a lateral opening which communicates with the socket, and the stub has a lateral flat so that the thickness of the stub, as measured in a plane including the axis of the stub and extending at right angles to the plane of the flat, is approximately four-fifths of the diameter of the stub. The width of the opening slightly exceeds the width of the flat and the aforesaid thickness of the stub. This renders it possible to insert the stub into or to withdraw the stub from the socket by placing the flat into a plane which is normal to the plane of the opening and by thereupon causing the stub to pass through the opening.

Abstract: The coupling for connecting a winding rod for a roll of web material to a driver shaft, includes a tenon-like end portion of the rod and a matching socket formed at the end of the driver shaft; exchangeable wearing plates are inserted in between the flat coupling surfaces of the end portion and the socket or the socket snugly accommodates a one-piece wearing insert defining a recess for engaging the end portion of the rod.

Abstract: For burring and cleaning operations of substantially plane work pieces such as metal sheets having arbitrarily formed contours, openings and/or apertures and recesses, a machine is being disclosed which is provided at least with one pair of upper and lower driven rotary brushes along the conveying path of the work pieces. The rotary brushes are equipped with twisted or tressed bristles and are arranged with their horizontal axis of rotation at a corresponding inclination with respect to the conveying direction of the work pieces whereby the bristles of the two rotary brushes are meshing in the manner of interengaging gears. The work pieces are thusly burred and cleaned with a single passage through such rotary brushes.