For heat treating products having a substantially circular cross section and being composed of mineral fibers containing a binder in solution in water, a metal container impervious to microwaves and equipped with a conveyor device includes a source of hot gas which is directed to the surface of the product. The conveyor in the form of a movable belt and a ceiling of fixed plates cooperate to roll ...

A composition comprising from 2 to 25 weight percent of at least one free radical ethylene polymer with a specific gravity between 0.91 and 0.94, and from 75 to 98 weight percent of at least one copolymer of ethylene and at least one alpha -olefin containing at least 4 carbon atoms, with a specific gravity between 0.905 and 0.940 and a melt index between 0.4 and 3 dg/minute, wherein the average p...

60SD00498 CVD DIAMOND FOR COATING TWIST DRILLS The present invention enables the diamond coating of stationary elongate objects, such as twist drills, with a continuous uniform film without any motion of the twist drill due to the unexpected superb "throwing power" of a reactor disclosed herein. The CVD diamond reactor includes a vacuum chamber, inlet for feed hydrogen/hydrocarbon mixtures, and an...

2088260 9202635 PCTABS00010 A method is disclosed for determining the sequence of DNA bases by using two electrophoretic lanes for each DNA sample to be sequenced. Each lane incorporates two dyes.

A magnetic recording apparatus comprises a movable magnetisable recording medium (21) having a recording surface, a magnetic transducer (24) and an air bearing slider (10) supporting the transducer, head arm means (17) for supporting the air bearing slider with the magnetic transducer closely adjacent to the recording surface of the magnetisable recording medium, accessing means (19) for moving th...

Hydrocarbon steam reforming process and apparatus wherein blind ended, ie double pass, externally heated reformer tubes (52) are employed. The inner, ie return, tubes (80) are insulated so that there is only a small temperature drop between the reacted gas leaving the catalyst zone (90) and entering the return tubes (80) and the gas leaving the return tubes (80). The outer, blind-end, tubes (...

A safety device for a hypodermic needle or for a similar instrument used in the clinical puncture of the skin comprises a sheath (6, 25 or 32) adapted to be connected to the needle (5, 21 or 33) or to a support (4 or 31) for the needle. The sheath is so connected in a first position (FIG. 1A, 2A, or 3A) which permits normal use of the needle and can be placed, by movement relative to the needle (F...

Water-soluble, reversibly gelable cellulose ethers containing sulphoethyl groups (DS-sulphoethyl) and dihydroxpropyl groups (MS-dihydroxypropyl).

An improvement in a process for preparing a contact lens tinted over at leas t a pardon of its surface, having the steps of forming a tinting solution having a reactiv e dyestuff and applying the tinting solution to a polymeric hydrogel contact lens material, wherein the improvement comprises adding an effective amount of a phosphonium quaternary salt to the tinting solution before the applying ...

Balanced pH, thermally-reversible and irreversible gels are useful vehicles for drug delivery and in the formation of a protective corneal contact lens. Thermally-irreversible gels are ideal materials for use as an ablatable mask for the cornea to control the depth and smoothness of the ablated corneal surface during excimer laser keratectomy.

A process of forming a refractory mass on a surface, which process includes spraying against that surface a mixture of refractory particles and oxidisable particles which react exothermically with oxygen to generate sufficient heat to soften or melt at least the surfaces of the refractory particles and so bring about formation of said refractory mass, and causing the sprayed mixture to be heated s...

A continuous extraction apparatus and a continuous extraction process for extracting an extractable component of a liquid or particulate feed material with an immiscible liquid solvent for the extractable component thereof, which apparatus and process are both especially useful for extracting glycerine from soap, utilize an extraction column with oscillatably movable contact promoting means therei...

Compounds of the formula wherein R<1> and R<3> together form a bond and R<2> represents hydrogen or R<1> and R<2> together form a bond and R<3> represents hydrogen; R<4>, R<5>, R<6> and R<7> each independently represent hydrogen, halogen, alkyl, haloalkyl, alkoxy, nitro, amino, alkanoylamino, aroylamino, alkylthio or alkylsulphonyl; R<8> represents hydrogen, alkyl or aralkyl; X represents -...

The present invention relates to a multicomponent fibrous nonwoven structure and the process and apparatus for producing the same. More specifically, the present invention relates to a process for forming nonwoven materials using a forming chamber in conjunction with multiple fiber sources and a forming surface to create multicomponent nonwoven materials with varying features. The materials so pro...

Concerns a device for progressive detection at established intervals of the temperature in two distinct zones of the refrigeration cell and also the state of functioning of the motor of the auto-transported refrigeration group. This is characterized by the possibility of extracting the memory on which the data picked up by the sensors are recorded and by the fact that said memory can be entered in...

In a device designed to enhance the accumulation and retention of kinetic energy by the flywheels of engines and motors generally, and to optimize the successive use of such energy, the flywheel (2) turns in an airtight casing (4) connected to a vacuum pump (6) and maintained at negative pressure during operation in such a way that the resistance offered by air to the rotation of the flywheel is m...