PCT No. PCT/AU87/00115 Sec. 371 Date Nov. 3, 1988 Sec. 102(e) Date Nov. 3, 1988 PCT Filed Apr. 24, 1987 PCT Pub. No. WO87/06507 PCT Pub. Date Nov. 5, 1987.A rotary cleaning element having a head adapted to be mounted for rotation about a central axis, the head supporting a plurality of radial arms which are spaced substantially angularly equidistant around the central axis, the free ends of the ar...

Method for flocculating microscopic particles in suspension in a liquid and application to the collection of phytoplankton microalgae and of zooplankton and for the purification of used water. One passes a first liquid comprising microscopic particles in suspension through a fixed granular layer (2) up to partial or complete clogging of said granular material by said microscopic particles; one unc...

Device for testing the dielectric properties of biological materials and changes in these properties, characterised in that microwaves in the range from 10 GHz to about 100 GHz are radiated on to the test field. By measuring a defined part of the reflected energy conclusions are drawn about the absorbed energy and thus about the dielectric properties of the test material. The invention describes h...

In the case of an electric razor having a cutting head frame (2) which can be mounted on a casing (1), the said frame (2) is held fast by means of a bolt (7) which projects from the side wall (5) of the casing, can be adjusted against the resistance of a spring (6) and can be adjusted to release the cutting head frame from the casing by means of an operating element (9) arranged on the cutting hea...

PURPOSE:To easily perform the coloration of display on a CRT, etc., or the display classified by an input person, by providing plural writing tools having the different frequencies of alternating field generated from a display signal generation source. CONSTITUTION:Since the frequency of the alternating field generated from the electromagnetic coil 6 of the writing tool 1 is set so as to be change...

A seat rail structure for connecting a vehicle seat to the floor of an associated vehicle has a guide rail which is to be secured to the vehicle floor and a slide rail which is to be connected to the seat base of the vehicle seat. The guide rail is reinforced by a longitudinal band which is fixedly connected to it and which is of such cross-section that the combination of the guide rail and longit...

The invention concerns a process and an apparatus for applying prestresses to carbonaceous cathodic blocks in the operation of sealing the cathodic bar in position with cast iron. The block (1) in the course of the sealing operation is lifted on two rollers (16A, 16B) in the vicinity of its ends (E) and stresses F1 and F3 are simultaneously applied respectively to the ends (10) of the lateral edge...

N-Substituted azaheterocyclic carboxylic acids and their esters, of the formula:- wherein: n is a positive whole integer 2, 3 or 4; m is zero; R4 is hydrogen, or lower alkyl of from 1 to 4 carbon atoms; the dotted line represents an optional bond; R5 is hydrogen, or hydroxy, or when the dotted line forms a double bond, hydrogen; B is wherein R1 is hydrogen, fluorine, chlorine,...

In a magnetic disk apparatus adapted such that a magnetic disk made of a hard disk type carrier with a magnetic recording region formed on the surface thereof is rotated in a high speed therein, air is introduced between its slider formed integral with a magnetic head and the magnetic disk, whereby the magnetic head is floated over the magnetic disk and allowed to write data on the magnetic record...

Wastewater containing nitrate and/or nitrite is purified by passing said water, in a first stage, under reducing conditions through a basin or a filter containing naturally occurring filter material. The reduced water is then oxygenated in a second stage and kept in a basin until the oxidation processes are completed.

Wastewater containing nitrate and/or nitrite is purified by passing said water, in a first stage, under reducing conditions through a basin or a filter containing naturally occurring filter material. The reduced water is then oxygenated in a second stage and kept in a basin until the oxidation processes are completed.

1. An electrical component, component group or integrated circuit, particularly an electrical ground wave filter, inserted in a cup (10) with electrical and mechanical connecting elements (3) facing the exterior of the cup, which are retained over a section in a synthetic resin part (7) which acts as a closure means for the cup, and the surfaces of which facing the cup (10) are connected in dust-t...

1. A pallet for handling loads of the type comprising an upper loading face and a lower support face, the upper and lower faces being parallel and cross-braced by means of a plurality of blocks (12, 45) made of any mouldable material of rectangular or cylindrical section which are each adapted to have a tubular crimping element passing therethrough, the blocks being positioned in such a way as to ...

Fluidized bed apparatus for use in applying a coating, having a relatively lesser density, to particles, having relatively greater densities by causing passage of a gaseous atmosphere through a bed of the particles. The apparatus includes an enclosure holding a bed of the particles and means for causing flowing of the gaseous atmosphere carrying a material for forming the coating through the bed o...

Wastewater containing nitrate and/or nitrite is purified by passing said water, in a first stage, under reducing conditions through a basin or a filter containing naturally occurring filter material. The reduced water is then oxygenated in a second stage and kept in a basin until the oxidation processes are completed.

Wastewater containing nitrate and/or nitrite is purified by passing said water, in a first stage, under reducing conditions through a basin or a filter containing naturally occurring filter material. The reduced water is then oxygenated in a second stage and kept in a basin until the oxidation processes are completed.

A filter apparatus for the tangential flow filtration of highly turbid liquids includes filter elements (6) arranged in succession tightly one after the other along an axis (2) of a filter vessel (1). The filter elements (6) are each bell-shaped about a central hub body (11) which has a central bore hole (15); the central bore holes (15) of all filter elements (6) together form a filtrate line (14...

A gypsum composition for denture investment consists of 100 parts by weight of a mixture of 50-90 parts by weight of alpha -Gypsum hemihydrate ( alpha -CaSO4.1/2H2O) with 10-50 parts by weight of beta -Gypsum hemihydrate ( beta -CaSO4.1/2H2O) and 0.2-2.0 parts by weight of a soluble potassium salt. As the soluble potassium salt, use may be made of one or more of potassium sulfate, potassium chlor...

A porcess for producing a foamed synthetic resin body comprising continuously extruding a foamable thermoplastic resin extrudate composition from an extruder die (2, 3) into a reduced pressure zone (11, 19), subjecting the extrudate (F) to en expansion molding step, a cooling-hardening step and a cutting step while transporting the extrudate through the reduced pressure zone to obtain a foamed pie...