In a cast composite wear part consisting of a metallic matrix having wear resistant inserts in the or each working face, the inserts are formed from a ceramic wafer which consists of a homogeneous solid solution of 20-80 wt.% Al2O3 and 80-20 wt.% ZrO2 and which is impregnated with liquid metal during casting. Preferably, the ceramic material consists of 55-60 wt.% Al2O3 and 38-42 wt.% ZrO2 or 70-7...

Fiberfilling material is converted into fiberballs by an air-assisted rolling process in a turbulent air mill. Such a continuous process shows significant advantages over prior suggestions, with regard to productivity and flexibility.

The invention concerns a method of comminuting and crushing solids which may be partially metallic such as, for example, blocks of reinforced concrete. In contrast to the known electrohydraulic method, in which comminution is brought about by the effect of shock waves applied to the solids from the exterior, with the novel method the solid is exploded as a result of shock waves being produced ther...

The compound component (28) consists of at least two constituent parts (29, 30, 31) with different material compositions. At least one of such parts - which are joined into a single component by a concluding sinter process - consists of a hard alloy or a cermet. The joining surface between its constituent parts is an uneven surface. Also claimed is a method for production of such a compound compon...

The auxiliary stack frame (13) can be lowered and is positioned between two side walls of the sheet-delivery. The auxiliary stack frame attached at the corners (28) to lifting pieces (36) has a movable auxiliary stack holder element (19). The length of the auxiliary stack frame in the direction in which the paper travels (42) corresponds to double the length of the auxiliary stack holder element. ...

The arrangement includes an automatic transmission gearing and a throttle system with an aperture which is independently controllable. A detection arrangement detects a special step-down instruction, which is output to the automatic transmission gearing, when an accelerator pedal is not pressed. A throttle valve control arrangement opens the throttle valve, so that an engine performance is increas...

A container (1) has a body portion (2) with gussets (14) and with an inlet spout (4), an outlet spout (11), and an internal insert (101). The spouts (4, 11) and internal insert (101) are gusseted so as to conform with the gusseted body portion (2). An exterior surface of the spouts (4, 11) or internal insert (101) is sealable with the body portion (2) at a particular temperature but the interior s...

Anti-fog and scratch-resistant polyurethane compositions are disclosed which include an isocyanate prepolymer, a hydrophilic polyol and an isocyanate-reactive surfactant. The reaction product of the component produces enhanced properties having permanent anti-fog and scratch-resistant characteristics. These compositions may be used as coatings, films and self-supporting articles. Plastic substrate...

Blowing agent, active hydrogen-containing compositions, commonly referred to as B-side compositions or blends, and their use for the production of polyurethane and polyisocyanurate foams are disclosed. More particularly, the disclosure relates to blowing agent blend, foaming process and polyisocyanate-based foams which utilize environmentally friendly blowing agent compositions comprising a major ...

The device of the invention is comprised of a nozzle body (2) and a connection body (3) which can be coupled coaxially to each other and with a mutual longitudinal sliding capacity in both directions, both bodies (2, 3) having respective and complementary connection means which define for the connection body (3) two stable positions, a disconnection position and a connection position. In the disco...

A cryogenic rectification system employing an additional rectifying section in parallel with the lower section of the lower pressure column of a double column for producing product oxygen at both low and high purity.

The invention discloses a new class of silicone surfactants and their use for the preparation of flexible urethane foam. The surfactants incorporate high molecular weight polyethers prepared with narrower molecular weight distributions than conventional polyethers. These polyethers are prepared using a double metal cyanide (DMC) catalyst. These surfactants are better foam stabilizers than the anal...

A system for delivering radiofrequency energy to ablate tissue comprises a radiofrequency generator and an intravascular catheter. The catheter includes a radiofrequency ablation electrode and a temperature sensor within its distal end and may also include an additional electrode for ECG endocavitary mapping, or HIS. Delivery of power to the ablation monopolar electrode may then be controlled base...

A process for producing a thermoplastic polyester resin foam comprising melting a thermoplastic polyester resin, mixing the molten resin with a blowing agent and extruding the mixture into a low-pressure zone to carry out expansion molding, characterized in that a compound having two or more acid anhydride groups per molecule, optionally together with a compound of a metal of Group I, II or III el...

A size of particle or defect in an object is measured. A laser beam is guided through an optical system into the object. A light receiving element receives scattered light from a particle or a defect in the object. A scattering image is formed by an image processor from the scattered light thus received. The size of particle or defect is obtained by integrating a scattering intensity of the scatte...

A continuously variable transmission control system having adjustable driving and driven sheave assemblies (124,126) connected drivably by a torque transfer belt or chain (144), each sheave assembly having a fluid pressure operated servo with a pressure chamber, distribution of control pressure to one servo (150,158,162) effecting a transmission ratio adjustment, control of pressure distribution t...

Process for the preparation of a fine celled open celled rigid polyurethane or urethane-modified polyisocyanurate foam comprising the step of reacting an organic polyisocyanate with a polyfunctional isocyanate-reactive material, wherein the reaction is carried out in the presence of at least one infrared absorbing substance.

The invention describes a safety ski binding with a front jaw (3), with a forked jaw (7) which guides the ski boot (11) in the front sole region, and with a heel jaw (5). The heel jaw (5) has a forked jaw (17) which guides the ski boot (11) in the heel region during a pivoting movement of the forked jaw (7) of the front jaw (3). The front jaw (3) and/or the heel jaw (5) is provided with two centri...

A circuit and method for detecting a failure in a microcomputer are disclosed in which a watch-dog timer monitors an internal state of the microcomputer at an internal node representing the internal state and an error detection signal used to inform the failure of the microcomputer is output when a particular internal state to be generated on the internal node within a predetermined period of time...