The utility model discloses a multi-vane impeller with a seperating spacer, which can well solve the wind energy missing problem and can overcome the disturb of the radial force generated in the operating process of the impeller. Accordingly, the utilization rate of the wind energy of the impeller can be enhanced. The impeller is composed of a shaft sleeve, inter layers, and a plurality of vanes, ...

An apparatus and method for testing and verifying the timing logic of a cathode ray tube display in a data processing system. Apparatus associated with the CRT tests and verifies the vertical and horizontal synchronization and the logic associated with the character generator by counting the occurrences of a selected signal having a preestablished rate within a predetermined number of occurences o...

In the tyre-building apparatus, the tyre tread rubber is transferred to the tyre-building drum from a fixed support, advancing in the same direction as the drum rotation. In order to ensure that the tyre camelback tread rubber is properly laid in place, even when tread rubbers which vary from one another in their dimensions have to be used, the invention provides for the diameter of the tyre-build...

An apparatus and method for applying a bead filler material to a bead wherein the bead filler material may be applied to the bead at an offset position to compensate for the stretching of the filler material as it is applied to the bead to afford a proper splice of the leading and trailing ends of the bead filler material.

A run-flat pneumatic radial tire is equipped with a prestressed helical coil which is positioned inside the tire crown radially inwardly of the tread thereof. The coil is wound to approximately 50 percent of its free diameter to prestress it and the outer surface has a resin-impregnated tape applied thereto. The tape serves to hold the coil in a predetermined condition while the taped coil is cure...

The present invention provides a foldable frame assembly, comprising a pair of complementary X-shaped side frames each having two bar members (1, 2, 1', 2') hinged together intermediate their ends to permit folding and unfolding in the plane of the X, the two side frames being mutually parallel and in register with each other; and a pair of centrally hinged transverse X-frame support stays, each h...

A borehole logging tool and cryostat therefor to maintain a semiconductor detector at cryogenic temperatures. The cryostat has an elongate single-phase heat sink of solid, thermally conductive material on which the detector is removably mounted. The other end of the heat sink is arranged to receive a liquid cryogen or the cold finger of a helium refrigerator, which is removed before a logging run;...

A carboxylated polymer latex containing a minor amount by weight of a heat sensitizer sufficient to gel the polymer and which also can contain fillers,wetting agents and stabilizers can be used to provide a water resistant film on the surface or a hot rubber compound or composition whlch subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked...

A strand of glass fibres is impregnated with a sizing comprising (1) a coupling agent, (2) a stabilizer, (3) a lubricant, (4) a non-crosslinkable film-forming polymer and (5) a cross- linkable film-forming polymer. The resulting sized glass fibre strands have been found, to be storage stable; to form a package of sized glass fibre which is readily available for subsequent use; and to show improved...

A polymer of an ethylenically unsaturated monomer containing a pendant hydrophobic group and, optionally, other monomers such as (meth) acrylic acid, ethyl acrylate or acrylamide is provided as a stable, substantially anhydrous dispersion containing at least 40% by weight of the polymer in a continuous phase of a non-aqueous liquid. The polymer in the dispersion generally includes acid groups and ...

A suspension may be flocculated using a water soluble substantially linear polymer having a single point intrinsic viscosity above 3 and that is a copolymer of two or more ethylenically unsaturated monomers including at least 0.5% by weight of monomer carrying pendant hydrophobic groups. The cationic polymers are novel. Preferred polymers are those in which the hydrophobic group is introduced as a...

A polyimide foam, a laminate formed from polyimide foam and methods of their preparation are disclosed. The polyimide foams are formed from prepolymers formed from (1) an organic tetracarboxylic acid or an anhydride or ester derivative, (2) an aromatic amine, and (3) an organic liquid diamine. The laminate comprises a fire-resistant, heat activated adhesive overlaying a skin on the foam and a po...

Solvent-containing coating materials based on solvent mixtures of alkanols containing from 2 to 10 carbon atoms and/or plasticisers containing aliphatic or cycloaliphatic ester groups and hard resins of molecular weight 330-3,000 and on polymer resins soluble therein are suitable for coating polystyrene foams, since they do not damage polystyrene.

A differential gear drive having two output shafts each coupled through a differential gear train to a common input gear. The differential gear train comprises an annulus gear engaging the input gear, planet gears and a sun wheel. The output shaft is connected to a planet carrier and the output shaft is connected to the sun wheel. A pair of cam rings are rotatably coupled to the respective output ...

1. Water-in-oil (W/O) emulsion that contains a liquid non-miscible with water, hydrosoluble monomers and/or polymers, water and an emulsifier combination, characterized in that the emulsifier combination comprises at least one alkylpolyglykolether-carboxylic acid or alkylphenolpolyglykolether-carboxylic acid of HLB-value smaller than 7.

This invention relates to a gasification process for a coal gasification furnace which comprises ejecting coal and an oxidizing agent along the circumferential direction of a gasification chamber (10) to form a whirling stream, making the two contact and react with each other in the gasification chamber (10), thereby producing a combustible gas from the coal while making ash in the coal melt into ...

Polyester fiberfill having spiral crimp that is randomly-arranged and entangled in the form of fiberballs with binder fibers, preferably with a minimum of hairs extending from the surface of the fiberballs, so as to be air-transportable on account of the low cohesion between the balls. A process for making such fiberballs by repeatedly air-tumbling small tufts of such fiberfill/binder/blend agains...

A process is disclosed for manufacturing an integrated circuit in which multiple patterned layers of thin film materials are provided on a silicon wafer. The wafer is conditioned between the providing of layers, after each etching step, by rinsing the item with a purified water solution containing at least .01 ppm ozone, preferably between .02 and .09 ppm ozone.

A single-component, visible light-curable liquid adhesive composition having a viscosity of less than 25 centipoise at 25 DEG C which comprises (a) 2 to 20 parts by weight of at least one substantially pure phosphate ester having the formula CH2=C(R<1>).CO.O.R<2>.OP(O)(OH)<2> in which R<1> is a hydrogen atom or a methyl group, and R<2> is -CH2-CH2-, -CH2-CH(CH3)- or -CH(CH3)-CH2- and (b) 98 to ...

A single-component, visible light-curable liquid adhesive composition having a viscosity of less than 25 centipoise at 25 DEG C which comprises (a) 2 to 20 parts by weight of at least one substantially pure phosphate ester having the formula CH2=C(R<1>).CO.O.R<2>.OP(O)(OH)<2> in which R<1> is a hydrogen atom or a methyl group, and R<2> is -CH2-CH2-, -CH2-CH(CH3)- or -CH(CH3)-CH2- and (b) 98 to ...