The pressure regulator comprises a valving element caused to open or close a bleed port of the petrol circuit, and a diaphragm subjected to the pressure of said petrol and to a pressure which is a function of the engine intake pressure, said diaphragm being balanced by a force due to the action of an aneroid capsule also subjected to said pressure which is a function of the intake pressure.

A door for a refrigerator, freezer or the like comprises an outer panel (1), an inner panel (3) of plastics material and thermal insulation (8) between the panels. Around the periphery of the door is a seal (9) comprising a resiliently flexible sealing portion (20) and a lip (10) which is made of a stiffer material than the sealing portion and which is held between an inwardly directed flange (2) ...

Um die grosse Übertragungskapazität von Monomode-Übertragungssystemen voll ausnutzen zu können, wird eine integriert-optische Wellenlängenmultiplex- und -demultiplexeinrichtung für Monomode-Systeme angegeben. Wie in Fig. 1 dargestellt, besteht sie aus einem lateral zweimodigen Streifenwellenleiter (11), an den jeweils auf beiden Seiten zwei Monomode-Streifenwellenleiter (12, 13) angeschlossen sind...

The physical properties of a rubber-reinforced polymer resin are enhanced by the addition of glass fibers having a diameter which is less than 20 times greater than the volume average particle size of the disperse rubber particles in the reinforced polymer resin.

The mould of the mould arrangement comprises a bottom plate and two side portions which are movable to a first position in which they engage one another and the bottom plate to define a mould cavity and to a separated position. The side portions define cooling passages having entrances in bottom surfaces of the side portions and the bottom plate has at least one plenum chamber formed therein which...

A fibre reinforced plastics structure comprising a porous matrix of thermoplastics material and reinforcing fibres, the pores of said matrix being wholly or partly invested with a thermosetting plastics material.

Velocity matching between optical signals transmitted along a light guide (13) on a lithium niobate substrate (12) and microwave signals along transmission line electrodes (16 and 17) may be improved by positioning layers of dielectric material (14 and 15) between the substrate (12) and the electrodes (16 and 17). By improving the velocity matching the bandwidth of the device may be increased.

Blends of elastomers of chlorinated or chlorosulfonated polyethylene and ultra high molecular weight, i.e. at least one million, when cured with conventional curing systems for the chlorinated or chlorosulfonated polyethylene have higher tear strengths at temperatures of about 150 DEG C. than do the unblended elastomers. The amount of polyethylene in the blend is 5 to 50 parts by weight per 100 p...

A shredded tobacco feeding apparatus for a cigarette making machine is disclosed. It includes a storage reservoir for temporarily storing shredded tobacco, a device for feeding a constant quantity of shredded tobacco from the reservoir continuously, a device for classifying the shredded tobacco based on a required grain length, and a device for cutting such classified shredded tobacco with a long ...

A single-stranded deoxyribonucleic acid molecule having a length of less than about 25 kb comprises at least three distinct nucleotide sequences which are the sites for incorporation into a chromosome of a deoxyribonucleic acid molecule encoding a deleterious gene. Deoxyribonucleic acid probes have been prepared from such molecules and are useful as hybridization probes for detecting chromosomal d...

A refractory that is highly resistant to sequential steam oxidation and molten alkali attack is formed by reaction nitriding a mixture of silicon carbide grain, silicon metal and aluminum metal. The refractory is suitable as a blast furnace lining.

New steroids have, at the 17-position, -OZ and -C(CH3)=N-R20 or -OZ and (C(CH2Hal)=N-R20 (or are tautomers or acylates thereof), or -OH and -CN or -OZ and -CN substituents, in which Z is a blocking group and R20 is trialkylsilyl. The cyanohydrins can be converted to the enamide/enimide derivatives by methylation, and the products can be converted to oxazolines by reaction with acid.

Disclosed is a linear strip mask for controlling image plane light level distribution in line scan optical imaging systems. The mask is fabricated photographically on a strip of emulsion coated mylar. The photographic image which is recorded on the mylar strip is a pattern of alternating black and clear sections, the pattern of black sections chosen to modify the non-uniform light pattern output b...

There is described a suspension of finely divided sodium cromoglycate in an oily non-aqueous vehicle. The oily vehicle is preferably structured and may also contain another active ingredient, e. g. an antibiotic. The compositions are useful in the treatment of conditions of the eye or nose in which conditions allergy or immune reactions play a contributory part.

A method of diagnosing the peak compression pressure and power output of individual cylinders of an internal combustion engine based on stored normalized energy coefficients derived from a normalized pressure curve and the measured instantaneous engine speed.

Synthetic polyethylene wax having low molecular weight of 250 to 3000 and a density of 0.930 to 0.950 is prepared in a high pressure process at pressures of at least 800 bar using a carbonyl compound such as acetaldehyde as chain transfer agent. The resulting wax with incorporated CO has good compatibility in hot melt systems, and may be stripped to remove light ends, increase density and crystall...

Compounds having the formula wherein x and y are, independently, zero or one, with the proviso that x and y may not both be zero; and wherein R is a hydrogen atom; a halogen atom; a hydroxyl radical; -OR1 where R1 is an alkyl radical of from one to six carbon atoms, a phenyl radical, or a phenylmethyl radical; or R is -NR2R3 where R2 and R3, which may be the same or different, are each a...

An improved connector for coupling a chain to a wire rope or cable such that the resulting connection can be passed over a sheave, pulley, wheel or windlass without applying a bending stress to the wire rope. The connector comprises a hemispherical housing having an opening therethrough that is axially symmetric about the radius that is perpendicular to the planar portion of the hemispherical hous...

A preceramic polymer which is a polysilazane is described. It is made by reacting an organodihalosilane with ammonia to form an ammonolysis product, and treating the ammonolysis product with a basic catalyst capable of deprotonating an NH group that is adjacent to an SiH group to form said polymer. The polymer is preferrably further treated with an electrophilic reagent. These polymers are useful ...

Die Erfindung bezieht sich auf ein Ablenksystem (1) für einen Strahl geladener Teilchen, der einen an einer beliebigen Stelle in das Ablenksystem eintretenden Teilchenstrahl derart umlenkt, daß er auf die Eintrittsöffnung eines dem Ablenksystem (1) nachgeordneten Detektors (19) auftrifft. Das Ablenksystem besteht aus acht rotationssymmetrisch angeordneten Ablenkplatten und umfaßt zweckmäßigerweise...