The device is provided with independent range finding means 10-13 and movement sensing means 14-16, the sensing means generating output signals in response to the detection of an object, which output signals provide information as to the range and size of the object detected, and a comparator means for comparing the output signal from the sensing means with a pre-set threshold level. The range fin...

A battery separator formed into an envelope and having improved oxidation resistance is disclosed. The sealed edge along the bottom of the envelope and preferably also along the vertical side edges of the envelope has a greater amount of a processing aid, such that the treated area has from a 5 to 100%, preferably 5 to 20% and more preferably 10 to 100% greater amount of processing aid than the av...

The invention relates to a method and an apparatus for the parallel displacement of a material web (1) in that the material web (1) is, between two driven bending rollers (6, 8), caused to form a freely depending bight or loop (11) whose lower end is read-off by a sensing device (12). The sensing device (12) controls the speed of the first bending roller (6), while the second bending roller (8) is...

The flame detection system uses a microprocessor with a fuzzy-controller for analysis of the radiation intensity variations resulting from the flame, with signals outside a defined frequency band identified as interference signals. The mean and limit frequencies of the detected radiation are determined, with detection of periodic and non-periodic signals, the periodic signals with a mean frequency...

The utility model relates to a solar energy heat accumulating pond for heating and insulation, which belongs to a heat accumulating device using natural energy resources. The utility model is mainly composed of a casing and a cover plate. The utility model is characterized in that thermal insulation materials are arranged between an outer casing and an inner casing, the rear part of the outer casi...

The utility model relates to a high efficient solar energy heat collector. The method of nesting a metal heat-absorption pipe in a glass pipe is adopted, and the top of the void of the two pipes are sealed by sealing material. A stable support frame and a gettering sheet are arranged on the lower part of the metal heat-absorption pipe. The air pumping hole on the bottom of the glass pipe is sealed...

A circulating x-ray generator (11) which describes a circular path about a plane of rotation has several x-ray spots in a direction perpendicular to the rotation plane. An x-ray detector (12) opposite the generator has several detection elements arranged along the circumference of the rotation plane and in a direction perpendicular to the plane. A controller rotates the generator and detector, wit...

The synergist consists of zinc sulphate 25-40%, cadmium sulphate 10-16%, magnesium sulphate 0.8-7%, lead sulphate 0.15-0.4%, copper sulphate 0.2-0.8%, palladium chloride 0.01-0.04%, bromocresol green 0.01-0.03% and distilled water. When it is used in lead-acid accumulator, the charge period is shortened by 50%, service life is prolonged by one time, and the separated hydrogen and oxygen gas is red...

PCT No. PCT/EP95/01156 Sec. 371 Date Dec. 1, 1995 Sec. 102(e) Date Dec. 1, 1995 PCT Filed Mar. 28, 1995 PCT Pub. No. WO95/27566 PCT Pub. Date Oct. 19, 1995In the process for separating off by flotation (pressure release) suspended matter from liquids which are present in a gas-introduction reactor, the suspension to be withdrawn for flotation is conducted at a flow velocity

A readily detachable carrying device for a portable apparatus such as a mobile telephone 3, comprises carrying means such as a wrist strap 1 and/or belt clip 2 integrally formed with a string retaining member for receiving and releasably retaining the end portions of an attachment string 5. The device is attached to the portable apparatus by passing a free end of the attachment string through a fi...

Gegenstand der Erfindung ist ein Verfahren zur Herstellung von FCKW-freien Polyurethan-Hartschaumstoffen mit einer verminderten Wärmeleitfähigkeit durch Umsetzung von a) mit Urethangruppen modifizierten Isocyanatsemiprepolymeren mit einem NCO-Gehalt von 31 bis 20 Gew.-% auf Basis von aromatischen Polyisocyanaten und mindestens einem aromatischen und/oder vorzugsweise aliphatischen Polyester-polyol...

A conduit assembly for use with tubular conduits is disclosed as comprising a housing (20) with flange portions (44) which encompasses a plurality of seals (38) positioned around a conduit (22), a retainer (60) having a ring (74) and a pair of arms (76, 78) with an overall U-shape. The arms include an insert (98) which may be of different material and which prevent the separation of the conduits b...

A porous for making a high M.wt. solid state polymerised poly(ethylene naphthalate) (PEN) foam comprises (a) dispersing a inert gas into molten PEN of intrinsic viscosity I.V. 0.25-0.55 dl/g to form a foamed PEN with a void fraction of 0.10 to 0.50; (b) forming the foamed PEN into granules; (c) devolatilising the PEN granules at 80-140 deg C; (d) crystallising th devolatilised PEN at 150-260 deg C...

Prodn. of interlocking metallic parts, which slide over each other under pressure, comprises mixing a non-metallic molecular material in powder or granular form with the metal powder of the metallic particles produced in powder spray casting. This material is inert towards the metal and is resistant to temps. up to 900 degrees C. A ceramic, e.g. BaSO4 or TiO2, or C60 fullerene is added to the meta...

Process for the preparation of rigid polyurethane foams comprising the step of reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promotor which is an isocyanate-reactive cyclic carbonate or cyclic urea, and in the presence of an inert, insoluble organic liquid and a metal salt catalyst and a polyether polyol of average nominal functionality 2 to 6...

A phase grating mask is placed in-contact or near contact with an optical waveguide to make a blazed grating in the waveguide. A band of grating elements are defined across a surface of the mask such that in the plane of the surface each element is formed at a predetermined blaze angle to a central longitudinal axis of the band. The grating is made by aligning the waveguide with the axis of the ba...

A masking film for photomechanical uses comprises, in order, a transparent support layer (eg polyester), a light-shielding peelable layer (eg a rubbery polymer) and an antistatic layer comprising an electro-conductive resin (eg an acrylic).