A process for the production of polyolefin foam materials from crosslinked polyolefin foam scraps includes the steps of comminuting scraps of crosslinked polyolefin-containing foam; admixing the comminuted scraps with a synthetic resin on a polyolefin basis; compressing the resulting admixture at a temperature lying below the decomposition temperature of the crosslinking agent to form an aggregate...

The invention relates to a method wherein uncured urethane formulations are bonded to a cured rubber or synthetic rubber substrate in such a manner so as to provide greater bonding strength than has been achieved previously in urethane formulation bonding to rubber or synthetic rubber. The substrate is cleaned, a coating of a cyanoacrylate adhesive is applied, followed by a liquid or paste urethan...

A prepreg for making a composite is disclosed. The prepreg comprising reinforcing fibers impregnated with a resin composition comprising (A) an epoxy resin, (B) a reaction product of an epoxy resin and a butadiene-acrylonitrile copolymer having carboxyl groups on at least both terminals of the molecular chain of the copolymer, and (C) 4,4'-diaminodiphenylsulfone as a curing agent. A composite prod...

A rotation sensor device 11 includes a laminar body 12 supported on a taut filament 13 and undergoing torsional oscillation about an axis Z coincident with the filament 13. Rotation of the device, about an axis X through the plane of the body 12, induces an oscillatory torque, about an axis Y mutually perpendicular to the other two axes, the magnitude of which corresponds to the rate of rotation. ...

For monitoring drilling mud circulation there is incorporated in the supply mud a known amount or concentration of at least one tracer ion which is substantially non-interactive with the other mud components and with the strata drilled, and the return or circulatory mud is analysed at the rig site (preferably by ion chromatography) for the non-interactive ion(s) to give an indication or annular di...

Process for atomizing metal comprising quenching molten particulates (19) atomized in a gas medium at the surface (21) of a liquid quench medium, the position of which is adjusted to give a significant proportion of irregularly shaped particles in the powder product.

There is disclosed a casing centralizer 20 which comprises a tubular body or sleeve 21 adapted to fit about a joint of casing, and blades 22 extending longitudinally along the outer diameter of the sleeve on generally equally spaced apart relation, with the body and blades being cast as one metal piece. The ends of the centralizer are provided with castellations 25, 25A arranged so that a pair of ...

A control process for a rotary pump which is immersed in a fluid produced by a well involves the use of a rotary pump driven by a variable speed motor and comprises the steps of acting upon the rotational speed of the motor according to a pressure difference which exists between the pressure of the fluid measured in the proximity of the pump and the production pressure of the well. The production ...

A hydraulic brake actuator including a hydraulic parking brake that can be applied by mechanically locking up either a normal service brake application or a hand pump operated brake application. The lock-up mechanism includes a friction collar that surrounds the piston push rod and a hand pump actuated locking member that surrounds the friction collar. The friction collar and locking member have c...

PCT No. PCT/JP86/00038 Sec. 371 Date Nov. 10, 1986 Sec. 102(e) Date Nov. 10, 1986 PCT Filed Jan. 31, 1986 PCT Pub. No. WO86/04654 PCT Pub. Date Aug. 14, 1986.In an operation chamber 19 filled with silicone oil, there is provided a first resistance plate 21, which is spline-mated to the outer circumference of a first transmission shaft 3, and a second resistance plate 23, which is spline-mated to a...

A process for preparing a poly(p-methylstyrene) polymer foam including extruding a poly(p-methylstyrene) foam structure from a melt at a temperature which will yield an open cell percentage less than that formed in general purpose polystyrene foamed under the same general conditions. It also includes performing the extrusion from a melt at a rate which will yield a foam structure at least comparab...

A method for producing iron-silicon alloy articles having an improved combination of hot workability and electrical properties; the method comprises taking a molten alloy mass of an iron-silicon alloy from which the article is to be made and gas atomizing it to form alloy particles which are quickly cooled to solidification temperature. These alloy particles are then hot isostatically pressed to f...

A hydraulic brake actuator for a wedge type brake includes a tubular structure extending from the brake and housing an extended end of a stem of the wedge of the brake therein. A primary cylinder is mounted on the tubular structure and includes a primary piston mounted for sealed movement therein. The piston has a rod extending from one side thereof into the tubular structure to be operably connec...

Gas discharge display device having a vacuum-tight gas-filled envelope with a front plate and a back plate. A perforated control unit divides the interior of the envelope into a gas discharge space and a post-acceleration space and includes several electrode planes extending parallel to the plates. The gas discharge space has at least one plasma cathode and at least one plasma anode. The front lay...

In a process for producing a formed article of aromatic polyamide-imide resin by compression-molding at the temperature lower than the melting temperature of the resin, the improvement which comprises subjecting the resin, prior to the molding, to heat treatment in an oxygen-containing gas under conditions satisfying the following equation logt>/=a1+a2T+a3T2+a4T3, wherein a1=2.5841, a2=-8.4926x10-...

Powdered polysaccharide may be made by spray drying an emulsion in a non-aqueous liquid of an aqueous solution of the polysaccharide. Spray dried polysaccharides are novel materials. At least 90% by weight of the particles may be within a size range of not more than 100 microns. The particles may have an average size between 50 and 250 microns or between 10 and 50 microns, and the finer particles ...

Light-emitting cells of a display device are individually provided with inner walls at least partially covered by white reflectors consisting of glass material containing transparent particles having different refractive index by 5 to 80% by weight, so that extremely high luminous efficiency similar as that of optical integrating sphere can be realized. Also, openings for emitting colored light ca...

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 molten metal is placed in contact with a bed of moving beads. The molten metal breaks up into fine particles which are rapidly cooled in contact with the beads and consequently acquire a structure which is typical for such rapid cooling.