A drive mechanism for a dry shaver comprising a shear foil and a cutter reciprocatory relative to the shear foil includes a single-phase synchronous motor having a drive shaft. A cam is mounted on the drive shaft, and a transmission roller is constantly in contact with the cam. The surface of at least one of the cam and the transmission roller is provided with a layer approximately 1 mm in thickne...

Polycarbonate molded articles having excellent weather resistance and excellent abrasion resistance in which polycarbonate molded object is coated with an abrasion resistant cured layer comprising an ultraviolet ray setting paint, through a primer layer comprising a thermoplastic acrylic (or methacrylic) polymer containing 4-8% by weight of an ultraviolet ray absorbing agent, which are substantial...

A fiber- or film-forming wholly aromatic polyester having melt anisotropy, said polyester consisting essentially of (1) units (a) derived from an aromatic dicarboxylic acid at least 90 mole % of which consists of a p-oriented aromatic dicarboxylic acid and units (b) derived from an aromatic dihydroxy compound at least about 90 mole % of which consists of a mono-substituted hydroquinone ring-substi...

An electronic control system for a motor vehicle friction clutch and which has an electrical reference signal generator, an engine speed sensor and signal means, and a throttle position sensor which produces a signal indicative of throttle opening. The throttle signal is combined with the engine speed signal to form a modified engine speed signal and a comparator receives the modified engine speed...

A drum brake hydraulic wheel cylinder assembly comprises a pair of piston assemblies and an abutment member. The piston assemblies are of the kind comprising an adjustable variable length tappet assembly having interengaged screw-threaded components. To enable thrust to be transmitted from one adjacent brake shoe to the other, i.e. for parking purposes, the abutment member is slidable in the cylin...

1. A method for sealing concrete and natural stone against attacks by acid media, by treating the stone surface with an aqueous fluorosilicate solution, characterized in that the stone surface impregnated with the fluorosilicate solution is treated with an alkaline solution or suspension of a calcium compound.

Substantially non-crosslinked polypropylene resin foamed particles having a bulk density of from 8 to 100 g/l and a particle diameter of from 1 to 5 mm, the polypropylene resin is composed of from 5 to 30% by weight of a room-temperature xylene soluble matter having an ethylene content of from 20 to 80% by weight and from 70 to 95% by weight of a room-temperature xylene insoluble matter having a m...

There is provided an optical information recording and reproducing system which comprises a light source, a light beam power compensation circuit which can compensate a fluctuation of an emitted light beam power from the light source in response to a detected monitor signal corresponding to a light flux from the light source, a light beam control circuit composed of at least one control loop which...

A transparent topcoat coating composition is described comprising a thermoplastic or thermosetting resin material containing low pigment to binder ratio of titanium dioxide encapsulated mica particles. When used in a multicoat coating process as a transparent topcoat, an article is produced which not only produces satin finish color effects, but is stable to the elements as well.

A method of manufacturing MOM capacitors, the dielectric and the lateral insulation of which are formed by islands and by vertical partition walls, respectively, obtained by local anodic oxidation of one of the plates of said capacitors. The islands and the vertical partition walls are formed from cavities provided in the plates of the said capacitors.

PCT No. PCT/EP85/00651 Sec. 371 Date Jul. 25, 1986 Sec. 102(e) Date Jul. 25, 1986 PCT Filed Nov. 29, 1985 PCT Pub. No. WO86/03144 PCT Pub. Date Jun. 5, 1986.A foil has two essentially plane parallel surfaces of which at least one is at least partially covered by a metallic layer. The surface of the metallic layer is protected by an antifriction film. The surface of the foil opposite the metal-coat...

Lightweight ring gear for an epicyclic gear differential. The ring gear is fastened to a radially outwardly extending flange and includes inner and outer perimeters and a surface which is adapted to abut the flange. There are a plurality of equidistantly spaced apart cavities in the surface which extend from the inner perimeter toward the outer perimeter.

A clear, single phase, liquid cleaning composition particularly suitable for cleaning hard surfaces which leaves a low residue on unrinsed, cleaned surfaces consisting essentially of, by weight, 2-8% of an amine salt of an anionic sulfated or sulfonated detergent containing an alkyl radical of 8 to 22 carbon atoms in the molecule, 1-4% of water-soluble, ethyleneoxylated nonionic detergent, 2-15% o...

Items of merchandise (30) are protected from shoplifting or theft by affixing to them, special responder targets (32), which are formed by drawing a material of high magnetic permeability into a thin wire, then heat treating the wire to substantially increase its magnetic permeability and thereafter severing the wire into individual lengths. Several wires (32a, 32b and 32c) may be positioned on a ...

Asbestos-free fiber reinforced hydraulically setting materials, which comprise a slurry of one or more hydraulic binding agents, fibers, water and perhaps additional additives, are obtained when, as fiber, 2 to 20% by volume of filter fibers and 0,5 to 20, preferably 1 to 10% by volume reinforcing fibers are used, both of which are subjected to preliminary treatment which improves their dispersabi...

A device for electrically connecting the source of electric power and conductors of a defroster for rear window in automobiles, comprising a plate to be welded on the collector of the defroster and a tail for connection to the power source, staggered with respect to the plane of the plate and having a portion of reduced transversal section. The plate is provided with holes and recesses which allow...

The present invention relates to a stack, particularly an atmospheric cooling tower. The stack comprises a shell with double curvature and a bearing structure or seating for the shell; the shell is dissociated from the seating and presents in its lower part a rigid peripheral ring via which it rests on this seating. The invention is more particularly applicable to the production of atmospheric coo...

A mixture comprised of an alkali metal carbonate and an inorganic salt of ferric iron, other than ferric phosphate, is an accelerator for cementitious compositions and is particularly useful in rapid setting cementitious compositions. The preferred alkali metal carbonates are sodium carbonate and potassium carbonate and the preferred ferric iron salts are ferric sulfate, ferric chloride and ferric...

Small electrical appliance having a transversely divided housing in which a motor chassis carrying the motor is accommodated, which chassis is held against stops in the housing upper part by means of resilient claws provided on the housing upper part, the resilient claws being blocked against deflection by the housing lower part surrounding them.

An extension cone for a cutter for a hydraulic dredge. The cone has spiral helical blades with an opposing helix to the cutter head to force the material forward as the cutter rotates, thus smoothing the bottom and returning any material which was cut and has passed the cutter head back to the suction orifice.