An electroviscous (EV) fluid composition whose fluid properties are altered in the presence of an electric field comprises water-containing particles of a phenol-formaldehyde polymer dispersed in a non-conducting liquid. The composition, selected from the broad range of fluid compositions of UK Pat. No. 1570234, possesses improved fluid properties combined with markedly reduced electrical conducti...

An oriented film is prepared by crosslinking a sheet of polyethylene (preferably HDPE) containing particulate inorganic slip and antiblock additions to provide maximum crosslinking at the surfaces of the sheet and minimum orientation at its middle layer portion, and thereafter heating and stretching the film to obtain an oriented HDPE of high clarity film of improved moisture proof.

A semisintered polytetrafluoroethylene article which is prepared by heating at least a part of an unsintered polytetrafluoroethylene article at a temperature of at least a melting point of a sintered polymer, the heated part of the article having an endothermic curve at a temperature of 345 +/- 5 DEG C on a crystalline melting chart measured with a differential scanning carolimeter and the crystal...

Process in which the fibres are impregnated with a polyamide before a pultrusion, characterised in that the fibres impregnated with a polyamide oligomer or prepolymer are treated while heated to cause the elongation of the polymer chain before the calibration by pultrusion.

System for acquiring and recording signals furnished by a set of sensors fitted in one or more probes lowered into a well on the end of a multi-purpose cable. Various signals to be transmitted are multiplexed before being applied to an acquisition chain (15-19) adapted for amplifying them, digitising them and coding them before applying them to a transmission channel (L) in the form of blocks...

Dispositif pour extraire un liquide hors d'un tube 3 de grande longueur fermé à l'une de ses extrémités, par traction d'un piston coulissant vers l'extérieur du tube quand l'apport par canalisation d'un fluide de substitution est difficile à établir.

Le dispositif comporte essentiellement un élément mobile 8 constitué d'un corps 9 relié à un appareil de traction 12 en surface, d'un piston...

Un dispositif de désaccouplement est prévu pour supprimer l'effet de blocage du différentiel lors du freinage sur un véhicule équipé d'un système antiblocage des freins.

Ce dispositif établit et rompt la liaison entre une partie des pièces 42, 44 rotatives les unes par rapport aux autres et produisant l'effet de blocage du différentiel et l'un des pignons planétaires 27, 29 d'arbres de ro...

The present invention relates to an aqueous dispersion of silicone crosslinking to an elastomer on removal of water, comprising: - 100 parts of an emulsion (A) of the oil-in-water type of an alpha , -(dihydroxy)polydiorganosiloxane stabilised by an anionic and/or nonionic surfactant, - 0.1 to 15 parts of an organosiliconate, - 5 5 to 250 parts of a nonsiliceous inorganic filler, the s...

The present invention relates to an aqueous dispersion of silicone crosslinking to an elastomer on removal of water, comprising: - 100 parts of an emulsion (A) of the oil-in-water type of an alpha , -dihydroxypolydiorganosiloxane stabilised with an anionic and/or nonionic surfactant, - 0.1 to 20 parts of alkenyloxysilane, - 0.01 to 3 parts of a metal cure catalyst, - 0 to 250 parts of...

Disclosed is an extruded, low density, non-outgassing ethylenic polymer foam containing 30-85% open cells and the remainder closed cells and having an essentially integral surface. The foam possesses superior compression recovery and lower compression resistance when compared with similarly comprised ethylenic closed cell foams and superior moisture resistance and handling characteristics when com...

A process for treatment of an acidic solution containing ferric iron and at least one non-ferrous metal, prior to removal of ferric iron therefrom, is characterised by adding a specified amount of at least one neutralizing agent, and separating off from the solution any residue or undissolved neutralizing agent remaining after neutralization, thereby producing a solution possessing an acid consumi...

A barteryless, portable, frequency divider including a first LC circuit (L1, C1) that is resonant at a first frequency for detecting electromagnetic radiation at the first frequency; a second LC circuit (L2, C2) that is resonant at a second frequency that is one-half the first frequency; and a transistor (Q1) coupling the first and second LC circuits for causing the second LC circuit to transmit e...

PURPOSE:To remove efficiently the gas generated in a material and to form an excellent foamed piece by a method wherein stock moldings made by a compounded resin formed by kneading with a blowing agent is mounted on a mold, and a vent hole is formed on the upper side of the mold to heat the formed piece. CONSTITUTION:Blowing agent is added to a material resin composed of vinyl chloride polymer or ...

This invention relates to a process for producing a concrete mixture containing an AE fly ash cement having substantially no fluctuation of entrained air contained therein regardless of the amount of unburnt carbon in the fly ash which comprises mixing an aggregate, water, and an AE fly concrete composition characterized in that polyoxyethylenesorbitan oleate having 16 to 41 molar ethylene oxide g...

An implant material for bone or soft tissue reconstruction and regeneration is composed of a sintered calcium phosphate evenly dispersed within a silicone elastomer. After hardening, the mixture can be easily shaped or formed as needed to match or conform to existing tissues. Actual bone regrowth is promoted by insuring surface availability of sintered calcium phosphate and sufficient porosity. Bo...

A working or buffer store (61, 62) is connected between a main or bulk store (74) and a vector processing unit (50). The buffer store contains one or more virtual vector registers operable under user control in register-to-register (RR) vector operations. A user instruction specifies the length of a vector operand to be processed, the type of operation to be performed, and which vector registers w...

PURPOSE:To prevent distortion or crack from occurring in a diaphragm when a tubular body with the diaphragm is heated and sterilized by providing the tubular body and the diaphragm made of synthetic resin provided traversing the internal space of the tubular body, and providing a projection at least on one plane side of the center part of the diaphragm. CONSTITUTION:A main body 21 is manufactured ...

A phosphonate ester (vinyl phosphonic acid reacted with equimolar diol) will cure on command (e.g. exposure to light) in the presence of an initiator. By adding inert filler, poly(vinyl phosphonic acid), ion-leachable glass powder and water, a command-curable dental cement with glass ionomer characteristics is obtained.

PURPOSE: To provide a simple breast lesion location detector of easier operation by making its anchor to bent to touching a lumen and project out from the top of a cannula when moved it toward the end direction of a localizer, making a larger dimension than a distance crossing the lumen as well as applying its top with insulation coating. CONSTITUTION: A marker 26 is composed of a base end 28, top...