The invention relates to a process for the preparation of positive or negative active mass of lead accumulators by using the active mass separated from production-refuse plates and/or the active-mass wastes produced during production. According to the invention when positive active mass is prepared then positive active mass, while when the negative active-mass is prepared then negative active-mass...

Device to stiffen and keep apart annular discs secured in rotation to the rotor shaft of a hammer mill. U-shaped edge elements 6 are mounted on the periphery of annular discs 2, which they straddle by their wings 11. The back 7 of one element rests on the back of the neighbouring element. Each back 7 has a recess for accommodating and rotating the hammers 4, mounted so as to be able to rotate and ...

In a scintillation camera apparatus, weight of the detector (14) composed by the scintillator, the photomultiplier tube and so on is generally relatively heavy. To support such a heavy detector (14), it is usually necessary to employ a heavy counterweight (16) or a long support arm so as to maintain balance condition between the detector (14) and the counterweight (16), resulting in a bulky and he...

A cutting device is provided for use with a printer having a plurality of movable blades which are disposed in side-by-side relationship and driven in a direction perpendicular to the length of the blade. A plurality of solenoids are provided for driving each movable blade. A spring, which is arranged to be depressed by the movement of the movable blade, applies a pressure to the paper to fix the ...

A device for producing focused acoustic pressure waves for therapeutic purposes, in particular for destroying concrements, calculi etc., includes a sound generating unit (1') generating pressure waves in a coupling medium (8); said waves are focused by a reflector (3). Said device can also include a locating device (11) for the concrements, calculi etc. to be destroyed. Said device is characterize...

A process is disclosed for manufacturing a high strength composite structure by needling individual webs of initially spunbonded material and then needle-punching a stack of the individual webs to enmesh and entangle filaments across the webs, with little or no loss of the initial filament-related strength.

Es soll eine Röntgendiagnostikvorrichtung geschaffen werden, die die Anfertigung von Röntgenaufnahmen am Krankenbett erlaubt, ohne daß der Patient zum Unterschieben einer Röntgenfilmkassette (9a) angehoben werden muß. Dabei soll eine einfache und genaue Zentrierung der Röntgenfilmkassette (9a) in bezug auf den Röntgenstrahler (13) sichergestellt sein. Die Patientenliege weist zwei Tragflächen (1, ...

In einem Bleiakkumulator, der auch über lange Betriebszeiten hinweg zu hohen Stromabgaben in der Kälte (Kaltstart) befähigt ist, wird die negative Elektrode mit dem notwendigen Expander im wesentlichen aus einer ligninhaltigen Depotsubstanz, vorzugsweise Holzmehl, versorgt, welches jedoch Mischungsbestandteil der aktiven Masse der positiven Elektrode ist und dort während der Formation und Zyklisie...

A control system for a continuously variable transmission (Fig. 2a) for a motor vehicle has a hydraulic circuit (Fig. 2a,2b) supervised by a control unit (70) which adjusts the transmission ratio. To improve system response under transient conditions the speed at which transmission ratio is changed is reduced as difference between actual transmission ratio and desired transmission ratio increases....

A centrifuge for separating a solid/liquid suspension is characterised in that: a) a weir (3) with an inner circular overflow opening (4) for the light phase is arranged in the drum (1) at an axial distance from the end wall (2) and is connected to the drum wall (5) in a media-tight fashion forming an annular channel (6) between weir (3) and end wall (2), b) the diameter of the overflow opening ...

Known magnet armatures for electromagnetically operated valves are produced from the solid material and have a relatively high weight, resulting in switching times which are insufficiently short. The new magnet armature is intended to be easily producible and to have a low intrinsic weight. In order to be able to provide the magnet armature (12) with a wall of small thickness, the said armature is...

A microprocessor controlled system for monitoring, storing and periodically reporting on data pertinent to the commercial operation of a reporting system, such as a soft drink vending machine, to a central data collection and monitoring computer, and which periodically reports such data over a telephone line which it accesses on a nondedicated basis. The microprocessor controls operations of the t...

Transport and conveying apparatus for prawns comprises conveying equipment (1) for prawns and a feeler device (8) with a feeler element (10) which is pivotably mounted to rotate about an axis (12) parallel to the path of the prawns and which is cyclically lowered onto the prawns before conveying on for processing. That part of the feeler element (10) which comes into contact with each prawn is in ...

A polyurethane is disclosed which can be used in particular for the production of articles intended to be in contact with blood, characterized in containing a macromolecular chain comprising nitrogen atoms in the form of quaternary ammonium groups, to which molecules of heparin are bonded, these nitrogen atoms originating from polymers consisting of q recurring units of the formula:

An aluminium strip (3) is fed (4) from a supply roller (1) to a take-up roller (2). The strip passes below a fluorescent tube (6) with a focussing lens. The light from the tube (6) forms a thin line (7) across the width of the strip. - A line-scan video camera (8) scans across (9) the thin line (7). The output of the camera (8) is fed to a signal processor which determines the depth of the emulsio...

An aluminium strip is fed from a supply roller to a take-up roller. The strip passes below a fluorescent tube with a focussing lens. The light from the tube forms a thin line across the width of the strip. - A line-scan video camera scans across the thin line. The output of the camera is fed to a signal processor which determines the depth of the emulsion layer on top of the aluminium strip. This ...

Verwendung von Polyfluoralkanen der Formel CX3 - CY2 - R (I) in der am gleichen C-Atom befindliche Reste X für Wasserstoff und/oder Fluor, am gleichen C-Atom befindliche Reste Y für Wasserstoff, Fluor und/oder CF3 und R für CH2F, CHF2, CH3, CF3, CF2-CH3, CF2CH2F, CH2-CH3, CH2-CH2-CH3 oder -CH(CH3)-CH3 stehen und ein Molekül der Formel (I) mindestens zwei Fluoratome enthält, als Treibgase.; Us...

The circuit arrangement comprises, for each bit location in a column of the RAM, an input shift register, a multiplexer and a comparator. The input data bit is stored in the shift register, and the multiplexer is arranged during a write cycle, to write the data bit into the bit position. During a verification cycle, the multiplexer is arranged to write the inverse data bit into the same position, ...

A means and method for control of an autonomous vehicle while working on a surface, specifically for operation of an automatic floor cleaning machine using power derived from line power through a wall plug and cord. The vehicle uses information derived from contact between bumpers and objects in the environment to sense the geometry of its environment and utilizes a recursively applied algorithm t...

A bottle is moved over a sector of a circular path and simultaneously rotated around its longitudinal axis for the opto-electronic inspection of the mouth area for chipping of the glass. The bottle is guided through the beam path of a measuring apparatus on its way over the circular path. A measuring beam passes at an oblique angle to the longitudinal axis of the bottle in the area of the mouth op...