Article and method of making same by laser-ablation-machining of (a) aromatic and/or amorphous polyamide material, or (b) polymeric material having repeating in its polymer backbone aromatic rings and aliphatic chains (with the proviso that the aliphatic chains have at least 4 carbon atoms when the material is a polyester, and preferably in all cases U.V. laser radiation is preferred, preferably a...

An adjustable X-ray examination apparatus (24, 26) comprises an auxiliary element (38), for example a weight or a gas spring, in order to compensate for forces generated during operation of drive mechanism formed by parallelogram arms (16, 18, 20, 22). The forces increase with the amount of excursion from a neutral position. The auxiliary element may be mounted and adjusted so that, for the whole ...

A sealed tubular lead-acid battery is provided which offers high-rate discharging performance and long cycle life by loading a granules of fine particles of silicon dioxide both in a gap between a separator and around each of a positive and negative plate, as well as around the assembled element comprising a separator and the plates. An electrolyte is retained on the positive plate, the negative p...

A method and apparatus for controlling a continuous speed variable transmission includes a pressure sensor for detecting atmospheric pressure, and a control unit which receives a detection signal from the pressure sensor. The control unit responds to the detected atmospheric pressure, the shift position of the transmission, and other predetermined conditions to correct clutch pressure and line pre...

The foremost end of the tire forming material (S) fed by the material feeding device (3) is gripped by a chuck device (4), introduced onto the tire-former (2) covered with a carcass (T) beforehand, and then mounted on the carcass (T). A presser (6) operates to press the tire forming material (S) to the carcass (T) and, at the same time, the tire-former (2) rotates at a predetermined angle and stic...

A peripheral gas current of a laden gas flow is concentrated in particles in a settling length (38) of a centrifuging chamber (2). It is then stopped in its lengthwise travel in a separation length (40) in which its pressure is made sufficiently high, by entrainment by fast-rotating paddles (24), for this stream to escape outside through a discharge opening (32) while a purified internal gas strea...

A decanter centrifuge used for liquid-solids separation of a feed solution containing suspended solids by means of a centrifugal force. The decanter centrifuge is characterized by at least one dip weir fixed to the external periphery of the wall of a straight shell of a screw conveyor on the solid discharge port-side away from a slurry feeding port, while there is a distance between the external p...

A bead lock apparatus incorporating in a tire building apparatus and a method of locking a bead ring (4) by using the bead lock apparatus for transferring a bead ring from a bead setter (5) engaging the inner circumferential surface of the bead ring to the tire building apparatus at a predetermined position thereon. The bead lock apparatus includes a plurality of first bead lock segments (6) posit...

A crushing apparatus is fitted with hammers which preserve the hammer spindle. The bores of these hammers have a wall which is made curved away from the hammer spindle towards the two edges, leaving a shorter, straight middle piece. Thus the individual hammer can execute a limited rolling movement on the hammer spindle, without unfavourably influencing the hammer spindle in doing so. Likewise the ...

A lead-acid battery having thixotropic gel electrolyte comprising a blend of alkali metal polysilica and sulfuric acid. A method for producing a lead-acid battery having thixotropic gel electrolyte may be a continuous or an intermittent process. An aqueous colloidal dispersion may be produced by blending dry alkali metal polysilica with water and the gel electrolyte is provided by combining the aq...

Apparatus adapted for use in a water clarification system which removes particles of greater than a predetermined size from the clarified water includes a screen or a pair of concentric screens positioned in a clarified water storage area between an inlet and a clarified water outlet. One or more spray heads for direct a shower of high pressure filtered clarified water at the outlet side of the sc...

Rotary cutting device comprising a support structure supporting, between two parallel vertical uprights (1), two superimposed cutting cylinders (4, 5), the device being characterised in that it comprises, between each pair of bearing blocks, an upper one (9) and a lower one (10), a counter-pressure stop secured to the upper bearing block (9) and bearing on the lower bearing block (10) through an e...

A continuous method for making starting, lighting and ignition lead-acid battery positive plates and the resulting battery is disclosed which utilizes a directly cast alloy strip wherein the alloy consists essentially of lead, from about 0.02 to 0.05% calcium, from about 0.3 to about 0.5% tin, and from about 0.02 to 0.05% silver, the percentages being based upon the weight of the alloy strip, as w...

A device is disclosed which provides direct and effective incorporation of material (such as medicine) from a separate container into the contents of a liquid dispensing device. The device has a hollow sleeve extending outwardly, an openable closure, a securing member which engages a mating member on the container, and a conduit (such as a needle) to provide fluid communication between the device ...

The purpose of the invention is to detect impurities in a semiconductor wafer (20). A laser (21) forms a light beam having a high proportion of its power at an optical frequency capable of being absorbed by the impurity to be measured. The beam is split into first (25) and second (26) light components, one of which is directed at the surface of the semiconductor wafer (20) to be tested and the oth...

A tyre which is provided on a sidewall with an embossed mark (3) , the embossed mark has an indent portion (5) and an outline portion (6), the outline portion has a top surface (6A) having a light colour different from a dark colour of the light colour different from a dark colour of the sidewall surface (2S) ,the bottom (5A) of the indent portion is provided with a rough surface to have a less lu...

The device controls and/or monitors a h.f. surgical device with at least one h.f. generator which is suitable for monopolar, bipolar and/or quasi-bipolar cutting and/or coagulation. Different h.f. surgical instruments (1) can be connected to and operated by this device. The h.f. surgical instruments (1) have an electric or electronic coding device (C). Also, at least one electric or electronic dec...

The navigation system uses a sensor system (SEN) for monitoring the working environment and supplying measured data representing the position and/or movement of detected obstacles (OBS1,OBS2). The detected obstacles are marked within the local navigation plane and enclosed by a safety zone (SA1,SA2). The control commands for the robot drive and steering systems are obtained by calculating an harmo...

The meat-holding cylinder (14) can be opened and closed at one end and has slits (16) crosswise to its transverse direction. The slits extend from one wall side (18) to the opposite facing wall side (20), leaving an outer wall arm (24) joining the part-cylinder (22) thereby formed. A cutter grating (26) has blades (28) corresponding to the number and distance apart of the slits in the meat-holder ...

Vulcanising mould for tyres having a mould body part which has a mould surface bearing profiled ridges. At least some of the mould profiled ridges (4) consist partly of a material having a low thermal conductivity coefficient.