A technique is described for producing an image log of an investigation of the wall of a borehole with a high resolution tool. The tool employs sensors for measuring a characteristic such as the conductivity of the wall at locations which circumferentially overlap. An accurate tool depth measuring device is employed to modify the measured characteristic so that the measurement can be displayed as ...

An armoured submarine cable has a support collar 25 spaced from one end thereof and is secured to the armouring 26,27 of the cable on each side of the collar. The collar has an annular groove 24 which includes a radial shoulder which is downwardly facing when the cable adjacent the collar is disposed substantially vertically and which locates on flanges 23 of a support structure 21 in order to sup...

The invention refers to a process of forming shaped articles from starch, which process comprises: (a) heating a composition comprising a pre-processed and essentially destructurized starch/water material, at a water content in the range of from 10 to 20 % by weight based on the weight of the composition to a temperature sufficient to essentially destructure the starch. (b) transferring the me...

A novel composition including from about 5 parts by weight to about 40 parts by weight of a polysulfone and from about 95 parts by weight to about 60 parts by weight of an aromatic polybenzimidazole, and a process for the production of high-strength PBI filaments. The process includes: preparing a PBI solution; forming filaments by extruding the solution; washing and drying the filaments; and, dra...

Solutions of linear aromatic poly(imideamide)s which are, on the one hand, clear at room temperature (23 DEG C) and stable in storage at the same temperature and, on the other hand, are suitable for producing especially films or varnishes exhibiting little colour. More precisely, these solutions consist: a) of gamma -butyrolactone as solvent and b) of a particular poly(imideamide) which is prepar...

A differential gearing, in which the torque introduced via an input shaft is distributed equally to two driven shafts, is constructed as a spur gear differential and has a pinion arrangement as the locking mechanism in which the pinions and spur gears work as geared pumps. The pump moment is directly the locking moment, with the hydrostatic pressure developed being reduced by precisely dimensioned...

A method of producing a porous polymeric material having open pores comprises the steps of preparing an emulsion slurry by vigorously agitating a mixture comprising a main ingredient, a polyamide hardener, a filler and water, casting said emulsion slurry in a water-impermeable mold, hardening said slurry while it contains the water. The main ingredient is a bisphenol-type epoxy resin added with on...

A limited slip differential comprises a bevel gear differential having side gears and planet gears carried by a planet gear support which is capable of limited rotation relative to the carrier. When the side gears carry unequal torques the support tends to rotate and moves a pressure ring axially due to complementary cam surfaces on the support and the ring and this engages a friction clutch which...

A composite material wherein a mixture of a phenolic or furan resin and an inorganic filler as matrix materials is incorporated in an inorganic fiber or heat-resistant organic fiber in the form of a long fiber bundle or a roving. The fibres can be glass fibres, carbon fibres, alumina fibres, aramid fibres etc., and produce a composite material with high heat resistance, strength and alkali resista...

A fluidized bed reactor and operating process is disclosed, the reactor including distributor plate means to provide distribution of fluid passing upwardly into a fluidized bed; a mixing chamber positioned below the distributor plate means; fluid entry means, preferably at the base of the reactor, for the passage of fluid into the reactor; flow deflector means associated with the entry means for p...

A heavy-duty bag with excellent resistance to thermal adhesion ("blocking") is formed from a sheet prepared from a polymer composition composed of a polyethylene resin and 5 to 30% by weight (based on the polymer composition) of a polybutylene terephalate resin having an intrinsic viscosity of 0.7 or more.

A rubbery terpolymer is made by copolymerisation of ethylene and an alpha-olefin (e.g. propylene) at a weight ratio of 73:27 to 40:60, and a diolefin (e.g. ethylidene norbornene) in a liquid organic reaction medium with a Ziegler catalyst; the amount of diolefin units is such as to give the terpolymer an iodine value of 10 to 38 and the copolymer has a Mooney viscosity (Ml1+4121C) of 135 to 200...

The apparatus and method is used for recording optical information on an optical disk and reproducing the optical information therefrom by the use of an optical beam. The system is especially adapted to eliminate crosstalk from nearby tracks even when the position of the beam spot fluctuates with respect to a desired track and even when the size of a beam spot incident to the desired track is vari...

The silicone composite product comprises a silicone gel obtained by curing a specified addition-curable type organopolysiloxane composition, and an elastomer layer or resin layer formed on the silicone gel by use of an organopolysiloxane having Si-bonded alkenyl groups and Si-bonded hydrogen atoms. The silicone composite product has the elastomer layer or resin layer formed integrally with the sil...

Integrated trading provides both automatic matching trades for trading instruments between potential counterparties and video conversational negotiated trades for trading instruments between potential counterparties using integrated keystations (202, 204, 206, 208) which are selectively connectable together. Each of the keystations (202, 204, 206, 208) includes a data input device, such as a keybo...

A semiconductor laser control apparatus (10) includes a semiconductor laser (12), a current driver (16) connected to the semiconductor laser (12), a semiconductor p-i-n photodiode (22) for generating a monitoring current (Im), and an operational amplifier (14). The inverting input of the operational amplifier (14) receives a modulated or control signal (Vc) through a resistor (Ri) and a feedback c...

Thermosetting resins for use in high performance fiber-reinforced composites are toughened without compromising their processability by the inclusion of micron-sized particles of thermoplastic material which are solid at ambient temperatures but solubilize in the resins at a temperature below the gel temperature of the thermosetting resin. By appropriate selection of the solubilization temperature...