The invention concerns a splice for yarns, whether textile or otherwise, which is obtained by coupling tracts of single yarns by winding after having untwisted beforehand at least said tracts of single yarns, whereby the splice comprises, in at least one tract of the joint (22), a number of twists in the coupled yarn which is advantageously greater than the number of twists comprised in the single...

This invention relates to a procedure for splicing yarns, whether textile or otherwise, with a join made by coupling two single untwisted yarns and thereafter retwisting them, wherein the single yarns are untwisted beyond a substantially nil twist value and are then coupled and retwisted so as to impart to the single yarns a desired twist at least the same as the twist comprised in the original ya...

An intruder sensor contains a microwave detector (14, 16, 18) and a passive infra-red detector (8, 10) in the same housing (2). A panel (4) in the housing defines a series of Fresnel lens segments (6) which define the zones for the infra-red sensitive element (8). The panel (4) also forms the radome for the microwave detector. In the twin horn microwave detector, the infra-red sensitive element (8...

A continuous screw centrifuge has a rotating solid-walled drum 5 and a filter 1 which extends generally transversely across the drum to filter the liquid discharging therefrom. The filter may be an annular disc mounted either on the drum or on the differentially-rotating screw 4. Apertures 10 may allow liquid to bypass a clogged filter, and baffles 11, 12 separate the filtrate from the bypass liqu...

PURPOSE:To decrease the number of picture memories and to improve the partial magnifying function by displaying both a magnified picture and an original picture at a time by the operation of an input controller and performing the zoom/roll control of the magnified picture. CONSTITUTION:The picture data are stored in a picture memory 1 and then read out to a display control circuit 4 through a pict...

A mobile robot calling system has a mobile robot normally waiting at a home position and connected to an AC power supply such that its battery is charged by the AC power supply in the wait status, and a calling oscillator for generating a calling signal to the mobile robot. The calling signal is supplied from the calling oscillator to the mobile robot through indoor AC power supply wiring. Relay t...

A method for finish coating on polyurethane formed articles, which comprises formulating a finish coating composition so as to have a content of pyrrolidone or its derivative represented by the general formula (I) in which R stands for hydrogen or an alkyl group having at the most 4 carbon atoms, in an amount of 5-40% by weight upon the coating, applying this finish coating compositio...

In repairing articles of natural rubber or elastomer predominantly of natural rubber with cured polymer or prepolymer (polyurethane/polyurea), adhering advantages are obtained especially at elevated temperatures when the damaged area is treated with halogen-containing oxidant dissolved in 1,2-dichloroethane instead of other solvents.

What is disclosed are stable aqueous solutions, useful for example to treat water to stabilize its hardness and to render it anticorrosive or biocidal, containing a dissolved cationic component, such as polyvalent metal cation or a cationic surface active agent, and a dissolved anionic vinyl copolymer comprising both anionic monomer units having a carboxylic acid group and units of a anionic monom...

PURPOSE:To achieve highly accurate centering while to reduce the cost by forming plural clicks at the open edge of the outercircumference of brake cylinder and engaging them with the casing. CONSTITUTION:The outercircumference 16 of the brake cylinder 3 of brake unit B1 is formed into complete circle. Then plural clock sections 17 are formed integrally through press at the open edge of the outerci...

A twin-disc brake comprises a fixed support, extending over an angular sector of about 180 DEG , and common to two calipers associated each with a respective disc. The calipers are mounted so as to slide axially along guides in the support and have hydraulic cylinders arranged on only one side of the associated disc, each caliper presents a reaction face for the pads on the other side of the assoc...

In the known procedures for applying a polymerizable polyfunctional acrylate primer composition to assist adhesion of a siloxane of silica coating, the improvement comprising employing as primer composition (a) a monomer containing at least two acryl groups, (b) a compound of formula (HS- R)nSiX4-n wherein X is alkoxy or ester and n is 1, 2 or 3, (c) an initiator, particularly a photo- initi...

A method is provided for the processing of coarse-grained waste rubber preferably on a continuous basis into a secondary rubber raw material. In the method coarse-grained waste rubber having a particle size of 0.5 to 15 mm, preferably approx. 4 to 6 mm, is subjected in a layer of a thickness not exceeding the largest dimension of a single grain to a thermoshock treatment in the restricted access o...