Abstract: The instant invention provides a cyclone separator having a chamber profile designed to preclude shear planes and stagnation flows therewithin.

Abstract: This invention is about a cyclone separator, and may be applied to the cyclone separators disclosed and claimed in UK Pat. Nos. 1583742, 1583730 or 2102311, or those described in UK Patent Application 8419771 or 8511149 or 8515264. Thus, application 8419771 describes a cyclone separator which has an inlet portion having generally the form of a volume of revolution with a single tangential inlet (preferably with an involute feed channel, for introducing feed to be separated into the cyclone separator and, adjacent to the inlet portion and substantially coaxial therewith, a generally axially symmetrical separation portion converging uninterruptedly into a downstream portion. The inlet portion has an axial overflow outlet opposite the separation portion (i.e. in its end wall).

Abstract: This invention is about a cyclone separator. This separator may find application in removing a lighter phase from a large volume of a denser phase such as oil from water, with minimum contamination of the more voluminous phase. Most conventional cyclone separators are designed for the opposite purpose, that is removing a denser phase from a large volume of lighter phase, with minimum contamination of the less voluminous phase. In our case, a typical starting liquid-liquid dispersion would contain under 1% by volume of the lighter (less dense) phase, but it could be more.

Abstract: This invention relates generally to cyclone separators. The separator of the present invention may find application in removing a lighter phase from a large volume of a denser phase, such as oil from water, with minimum contamination of the more voluminous phase. Generally, cyclone separators are designed for the opposite purpose, that is, removing a denser phase from a large volume of a lighter phase, with minimum contamination of the less voluminous phase. In one form of the present invention, a typical starting liquid-liquid dispersion would contain under 1% by volume of the lighter (less dense) phase, but it could be more.

Abstract: A cyclone separator for removing oil from seawater, the oil being up to a few percent of the volume, is proportioned as follows, symbols having the meaning shown on the Figure, a notable feature being the smallness of d.sub.o, the overflow: 10.ltoreq.1.sub.2 /d.sub.2 .ltoreq.25; 0.04<4A.sub.i /.pi.d.sub.1.sup.2 .ltoreq.0.10; d.sub.o /d.sub.2 <0.1; d.sub.1 >d.sub.2 ; d.sub.2 >d.sub.3. The half-angle of the convergence of the taper T.sub.2 is from 20' to 2.degree..

Abstract: A cyclone separator for the separation of lighter material (i.e. discontinuous or dispersed phase) can cope with fluctuating proportions of lighter material in the feed stream.A retractable plug 15 at the place where the cyclone overflow outlet meets the cyclone body has a bore 16 forming the effective overflow outlet. The plug is retracted while the cyclone separator is in operation, in response to sensors, to offer a larger outlet 12 as the need arises.

Abstract: In a darlington transistor having an integrated resistor connected from base to emitter of the output transistor element, the effect of the diode between collector and emitter formed when the resistor consists of an extension to the base region is reduced by forming at least part of the resistor either as an extension to the emitter region or as a separate region of the same conductivity type and connected to it. The resistor formed by the emitter region material appears in series with the diode.

Abstract: A cyclone separator for removing oil from seawater, the oil being up to a few percent of the volume, is proportioned as follows, symbols having the meaning shown on the FIGURE, a notable feature being the smallness of d.sub.o, the overflow: 10.ltoreq.1.sub.2 /d.sub.2 .ltoreq.25; 0.04<4A.sub.i /.pi.d.sub.1.sup.2 .ltoreq.0.10; d.sub.o /d.sub.2 <0.1; d.sub.1 >d.sub.2 ; d.sub.2 >d.sub.3. The half-angle of the convergence of the taper T.sub.2 is from 20' to 2.degree..

Abstract: To provide an integrated circuit with protection against overvoltage and overcurrent conditions, the channel of a field effect transistor is connected between the d.c. supply conductor for the integrated circuit and a further conductor for connection to one pole of a d.c. source for the circuit. The channel of the transistor is provided by a region of an epitaxial layer on a substrate of opposite conductivity type which provides a back gate for the transistor. A conductor is provided for connecting the substrate to the other pole of the d.c. source. The d.c. supply line voltage for the integrated circuit is thereby limited to the pinch-off voltage of the field effect transistor and the power supply current is limited to the zero gate-bias drain current of the field effect transistor. A protection arrangement also is disclosed for limiting forward current flow through an isolation diode in an integrated circuit resulting from accidental reverse polarity connection of a d.c. source to the circuit.

Abstract: A cyclone separator having a generally cylindrical first portion with a plurality of substantially equally circumferentially spaced tangentially directed feeds, and, adjacent to the first portion and coaxial therewith, a generally cylindrical second portion open at its far end, the first portion having an axial overflow outlet opposite the second portion, the internal diameter of the first portion being d.sub.1, and of the second portion being d.sub.2, and of which the internal length of the first portion is L.sub.1 and of the second portion is L.sub.2, the total cross-sectional area of all the feeds measured at the point of entry normal to the inlet flow being A.sub.i, the shape of the separator being governed by the following relationships:15.ltoreq.1.sub.1 /d.sub.1 .ltoreq.400.1.ltoreq.4A.sub.i /.pi..sub.1.sup.2 .ltoreq.0.20.1.ltoreq.d.sub.o /d.sub.1 .ltoreq.0.251.2.ltoreq.d.sub.1 /d.sub.2 .ltoreq.3.

Abstract: A cyclone separator having a generally cylindrical first portion with a plurality of tangentially directed feeds, and, adjacent to the first portion and coaxial therewith, a generally cylindrical second portion open at its far end, the first portion having an axial overflow outlet opposite the second portion, the second portion opening at its far end into a coaxial generally cylindrical third portion, the internal diameter of the axial overflow outlet being d.sub.0, of the first portion being d.sub.1, of the second portion being d.sub.2 and of the third portion being d.sub.3, the internal length of the first portion being l.sub.1 and of the second portion being l.sub.2, wherein the total cross-sectional area of all the feeds measured at the points of entry normal to the inlet flow is A.sub.i and wherein the shape of the separator is governed by the following relationships:10.ltoreq.l.sub.2 /d.sub.2 .ltoreq.250.04.ltoreq.4A.sub.i /.pi.d.sub.1.sup.2 .ltoreq.0.100.1.ltoreq.d.sub.0 /d.sub.2 .ltoreq.0.25d.sub.