A water treatment plant has at least one vertical stack of dissolved air flotation clarifiers (114 and 116). Raw water is directed to a single stage clarifier with a shallow tank (114). Its output is fed to an underlying two stage clarifier (116), preferably having tall, mutually isolated cells; inclined baffles over a filtration medium in each cell; a cell-by-cell backwash capability; and an arra...

A method for separating and recovering an acid, which comprises contacting to one side of a diffusion dialysis membrane an acid solution containing an acid having an acid radical with a formula weight of at most 200 and impurities and to the other side of the membrane water or a dilute acid solution, to separate and recover the acid in the solution, wherein the diffusion dialysis membrane comprise...

The method for attaching the end (2) of a yarn of a bobbin (1) comprises the following steps: a) the bobbin (1) is placed on two spaced-apart supports (4,5), b) a depression is made between these two supports (4,5) sufficient for sucking the non-secured end (2) of the yarn into the space (7) lying between the two supports (4,5), c) the bobbin is rotated in order to wind the non-secured end (2)...

Tyre having a tread which has profile elements such as blocks, ribs running in the circumferential direction, or the like, which elements are provided with lamina-fine indents and/or grooves whose wall areas have a three-dimensional structure by virtue of protruding or cut-back edges and faces, the edges or faces being constructed in such a way that wall areas lying opposite one another differ in ...

In the closed housing a disc rotor (1) or a drum rotor is rotatably located on a shaft, in which at least one expeller aperture (3,4) is provided. At least one cutting blade, which works in conjunction with the fixed counter blade, is arranged before the aperture. The cutting blade (9,20) fitted to the disc rotor or drum rotor, forming two cutting edges (13,14,21,22), is V-shaped. The cutting edge...

Die den Durchlass (22) im Ventilgehäuse (10) beherrschende, mit einem Ventilsitz (24) zusammenwirkende Drosselkante (44) ist an einem Absperrkolben (40) vorgesehen, der in einem Kolbenraum (36) im Ventilgehäuse verschiebbar ist und ein koaxial angeordnetes Vorsteuerventil (50) enthält. Dessen Durchlassöffnung (52), die mit der Auslassbohrung des Ventilgehäuses in Verbindung steht, ist in der gesch...

The disclosed accumulator adopts sealed casing, between the positive and negative plates the fibres are filled. The plate grateis made from lead-calcium alloy. Said accumulation has no need of maintenace, compensating electrolyte and distilled water. The service life can come up to 10 years.

The seat bolster (5) is mounted on a trolley (4) which slides in guides (11) to the bed position. The guides (11) for an additional seat bolster (10) descend into a position to the rear of the chair trolley. This bolster is in turn joined to a strip of material (13) joined at the far end to the chair back or back wall (3,2). Another bolster which may be used to complete the couch setting adjoins t...

A method of making a tire having a precisely located applique (1) and optionally scuff ribs (16) to protect the applique. The applique preferably is applied to a green tire case (6) on a tire building drum and placed in curing mold and cured without disfiguring the applique or obtain substantial rejects or blemishes. The mold preferably contains grooves (15) to produce scuff ribs (16) in the tire ...

Un elemento anulare (2), sostanzialmente piano, di materiale elastomerico di un pneumatico di un veicolo stradale viene realizzato avanzando uno stampo (3) per l'elemento anulare (2) stesso lungo un percorso (10) estendentesi attraverso una stazione di carico (38), in cui una striscia (56) anulare grezza di materiale elastomerico viene alimentata sullo stampo (3), una stazione di stampaggio (37), ...

This invention is a solution or dispersion of a liquid crystalline polymer characterized by having a polymer backbone to which are attached a plurality of pendant liquid crystalline moieties in an active hydrogen-containing compound having at least two active hydrogen-containing moieties. In another aspect, this invention is a polyurethane and/or polyurea polymer prepared by reacting a polyisocyan...

The fastening consists of a body (16) carried by a base (17) with a thrust plate extension (30) to support one end of the boot sole. The base is mounted movably on a plate (18) fixed to the ski by means of a horizontal transverse hinge, while a lock (46) holds it in place. A stop (28) which is fixed solidly to the ski limits the upward movement of the base (17), and the lock fixes the base in rela...

A liquid dispensing nozzle (10) assembly is provided for mounting on a liquid container (12) and dispenser having a flexible wall (14) and liquid storage cay ity for manually squeezed dispensing of a liquid from the cavity through the nozzle assembly (10). The nozzle assembly (10) maintains the liquid, such as contact lens saline solution, in sterile condition during storage and repeated dispensin...

An improved calibration method for calibrating the measured value of an analyte in a liquid sample by referring to a calibration curve drawn by plotting the interrelation between the calibration values of n (n is an integer of not less than 2) calibrators containing different contents of the analyte and the measured values of the analyte contained in respective calibrators. In the improved method ...

A vehicle tyre, with a carcass (1) and a reinforcement ply (3) arranged between the carcass (1) and the tread strip (2), has an air impermeable layer (4) at the inner side of the tyre which consists of a resilient spray film which is applied to the tyre blank or to the carcass material used to form the tyre blank and which is integrally bonded with the inner wall of the tyre during the curing proc...

Portable electronic apparatuses, for example cordless telephones, are often carried on the clothing of an apparatus user. For this purpose clips, attachment devices, etc., are known which are attached to the apparatus and allow attachment, for example, to the belt. If, as in the case of a cordless telephone which has very great length compared to its width, the apparatus is attached vertically, th...