Certain relief parts (11, 13) of a tread (1) for a radial tyre, are provided at least with incisions (41, 42, 43) having, in cross-section, outlines in the form of forks, and at least two prongs (41B, 41C) extending from a single portion (41A), the number of incisions (41) on the relief part (12, 13) being multiplied by a factor of at least 1.5 from the depth (h1) of the two-pronged incision (41)....

Polyisocyanurate foams having a reduced thermal conductivity are produced by reacting a) organic and/or modified organic polyisocyanates with b) at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms and, if desired c) low molecular weight chain extenders and/or crosslinkers in the presence of d) catalysts, e) if desired, blowing agents f) and, if de...

Tough polyurethane integral foams having improved tear propagation resistance, elongation at break and tensile strength are produced by reacting a) organic and/or modified organic polyisocyanates with b) at least one relatively high molecular weight compound containing at least two reactive hydrogen atoms and, if desired, c) low molecular weight chain extenders and/or crosslinkers in the presence ...

Improved structural adhesive obtainable by a process which comprises subjecting a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated compound to a heat-treatment for a period sufficient to effect cross-linking in the amorphous phase of the polymer. Process for its preparation by converting a thermoplastic material in a thermosetting material, and laminates pre...

A motor-wheel for electromobiles, bicycles, invalid wheel-chairs, in which the electromagnets (14, 15) of the rotor (12) of a commutator electric motor are arranged along a circumference in a pair of groups offset in relation to each other, whereas the commutating collector (6) of the stator (9), electrically connected to an electric energy accumulator (32), is so designed that when the magnetic a...

A disk drive having a passive slider exhibiting two fly heights, one for recording and reading operations and a second for idling, is disclosed. The disk drive has a magnetic recording surface set for rotation in a direction. A transducer carrier is radially positionable relative to the magnetic recording surface and can be moved between recording portions and idling portions of the annular surfac...

Le dispositif de mesure de la compliance urétrale, comprenant une sonde (1,10) avec un tube (2,11) de diamètre (D) percé d'au moins un canal longitudinal (4,5, 6,12) et pourvu d'au moins un moyen capteur de pression communiquant chacun avec son canal respectif, un moyen d'alimentation en fluide dudit canal et un moyen de me sure de pression dudit fluide caractérisé en ce que ledit moyen capteur de...

A high-strength composite material produced by kneading, molding and drying a mixture of a non-hydraulic inorganic material, a water-soluble polymer and water, followed by, if necessary, treatment with an isocyanate.

A revision knee prosthesis which includes augmentation blocks (17, 18, 19) that may be added to the inferior surface of the femoral component of the prosthesis. The blocks have a post (20) on one surface which is secured in a cavity (16) in the inferior surface.

A plastic-molded-type hollow semiconductor device includes a base (2) and a cover (5), which are joined together by a thermosetting resin bonding material (9) that is applied to the entire edge surfaces of the cover (5) as well as bonding surfaces of the base (2) and the cover (5). The thermosetting resin bonding material (9) is applied after placing the cover (5) on the base (2) and simultaneousl...

In an apparatus useful for sealing layers of a web comprised of plastic film lay ers to one another in a bag-making machine, a sealing drum having a cylindrical surf ace is employed. A sealing blanket is deployed about plural blanket rolls and about the sealing drum so that a substantial portion of the cylindrical surface of the sea ling drum is wrapped by the sealing blanket with the wrapping sur...

A secondary packetized data stream (IS), such as a commercial, is spliced with a primary packetized data stream (MS), such as a network television program. The system does not require decompression of the data in the primary data stream, and is particularly suitable for use at a cable system headend to allow the insertion of commercials from local businesses into a nationally broadcast television ...

A disposable absorbant article, such as a diaper (10), having a liquid impervious backsheet (14), a urine pervious liner (12), and absorbent core (18) intermediate the backsheet (14) and liner (12) is disclosed. The liner (12) has a passageway (22) to allow communication of solid waste materials to the core (18), thereby isolating such waste from the skin of the wearer. The liner (12), is at least...

An optical pickup head apparatus comprises a first coherent light source for emitting a coherent light serving as a main beam, and a second coherent light source for emitting a coherent light having a polarized plane at a right angle to the polarized plane of the coherent light emitted from the first coherent light source. When the coherent light emitted from the second coherent light source is in...

An insulating adhesive tape comprises a base supporting film and an adhesive layer formed on at least one surface thereof, said adhesive layer being formed of a thermoplastic polymer comprising a thermoplastic polyimide. The thermoplastic polymer has a glass transition temperature ranging from 180 DEG C to 280 DEG C and an elastic modulus ranging from 10<1><0> dyne/cm<2> to 10<1><1> dyne/cm<2> at ...

Described is an optical data storage system which comprises a multiple data surface medium (12) and optical head. The medium comprises a plurality of substrates separated by a light transmissive medium. Data surfaces are located on the substrate surfaces which lie adjacent a light transmissive medium. The data surfaces are substantially light transmissive. The optical head includes an aberration c...

The invention provides an inhaler 140 for delivering a substance in a finely divided form. The inhaler 140 comprising an air intake and an inhalation passage 144 communicating with the air intake. A receptacle 145 in combination with a metering device having first and second end elements sealing against the inner walls of the receptacle so as to define an intermediate dosing space loaded with a de...

A tampon having a single layer wrap of fibers attached together by a powder binder. The wrap is embossed around a tampon pledget. The wrap in one embodiment includes a blend of hydrophobic synthetic fibers and hydrophilic cellulosic fibers laminated together with bonding powder. Another embodiment has only hydrophilic cellulosic fibers laminated together with bonding powder.

The hydraulic reactor and classifier with ultrasonic application permits the cla ssification of fine particle fractions that are present both in the crushed feed load to the gr inding circuit as well as directly to the mill discharge, in such a way that the overgrinding of t he particles that have reached the adequate liberation or fineness grade is eliminated; it consist s of two main parts, in t...