An improved method for producing a protective-coated steel pipe in a construction work site by spirally winding and melt-bonding a belt-like thermoplastic synthetic resin sheet around the outer peripheral surface of a steel pipe, for use as a construction member in corrosive circumstances, the method provides a winding step winding the sheet around the outer peripheral surface of the steel pipe wh...

PURPOSE:To restrain variation of coupling force by shifting spline engaging positions of inside plates and outside plates against respective rotating members in the circumferential direction, between the inside plates mutually and between the outside plates mutually. CONSTITUTION:In assembling, spline holes 103 are fitted to spline bosses 101 so that the lack tooth parts 112, 114,... of inside pla...

PURPOSE:To reduce parts in number, and thereby simplify assembly works as well as to make a space required small by connecting a piston to a cylinder with a connecting section between them in such a way that no relative rotation is allowed, and thereby concurrently providing each disc spring which energizes each space between the piston and the cylinder to the direction of extension. CONSTITUTION:...

PURPOSE:To soften shock due to coupling by constituting the action of a loose coupling valve to stand by during the period of time just before a clutch is coupled in after a speed ratio switching means has been switched over. CONSTITUTION:When a speed ratio switching valve 8 is switched, a control signal is output to an actuator in such a way that a reset valve 13 for a loose coupling valve is ope...

An apparatus for splicing the tow ends of man-made fiber tows, including a pair of jet carriers having oppositely directed pairs of jets to which compressed air can be supplied, whereby the connection of tow ends introduced between the pair of jet carriers is effected by aerodynamic turbulence. In order to enable an automatic splicing procedure, the pair of jet carriers is disposed on a jet carrie...

PURPOSE:To detect the approach angle of a car with satisfactory accuracy regardless of the approaching direction of the car, by setting copying sensors in parallel to each other with a prescribed space between them and adding another sensor at the front oblique position of both of above-mentioned copying sensors. CONSTITUTION:The approach angle of a car is detected by setting copying sensors in pa...

PURPOSE:To reduce the total number of items of the guide information to be stored in a memory by representing the points which are close to each other among point groups disant far away from each other at a virtual point and replacing the information on the original point group with the information on said virtual point. CONSTITUTION:The entire road network is divided into plural territories by bo...

Mechanism for a sofa-bed, comprising a support frame for a mattress (M), the said frame being foldable and retractable in the folded-up position in a case (1) defining the contours of the seat of the sofa-bed, characterised in that it comprises a first assembly constituting the actual frame and formed by the first parts (14, 23, 24, 34) of two articulated subassemblies (6) connected together by sl...

An optical apparatus is provided which comprises: a semiconductor laser having first and second emitting points for light emitted in the junction plane and perpendicular thereto, respectively; a cap element covering the semiconductor laser and having an aperture therein; means to produce focused light; and at least one plane-parallel, light transmitting body arranged in the aperture of the cap ele...

The invention relates to a monitoring element for image-transmitting methods, in particular for reproduction engineering and printing engineering, consisting of a support material (e.g. test film) having wedge-shaped lines and slits. Because of undercutting effects, dimensional changes to the pixels (e.g. raster points) occur during image transmission. These changes in dimension - which have the e...

The bar code reading device comprises a semiconductor laser diode, a first end face of which is optically coupled to an end of an optical fibre, a second end face being optically coupled to a detector. The bar code information is presented to the other end of the optical fibre. This information is read by the semiconductor laser diode by way of optical feedback.

PURPOSE:To prevent reduction of a holding current even though the voltage drops by providing both a power supply voltage dividing circuit, which divides a commercial power supply voltage, and a time-constant-circuit having a level limiting means on a time determining means, thereby making the holding current of an electromagnetic brake exciting coil constant. CONSTITUTION:A commercial power supply...

A joint for end-to-end coupling of two tubular elements includes tapered coupling surfaces on the tubular elements which are bonded together by adhesive. The coupling surfaces comprise a plurality of cylindrical sections of gradually increasing and decreasing diameters, respectively. A plurality of axially spaced-apart centering rings are interposed between the tubular elements to provide proper p...

a) Electromagnetic relay. b) Relay characterised in that the stud 14 is reduced at its end and the portion situated above has a peripheral zone whose diameter D is greater than that of the passage 16 and in that the support member 15 carrying the relay 10 is a printed-circuit board fitted with conductive paths 18, on which board the relay 10 is fixed through its shape, the stud 14 engaging in the ...

This process for the preparation of expandable polymer pearls comprises a the polymerisation in aqueous suspension, at a temperature of approximately between 80 DEG C and 150 DEG C, at a pressure of approximately between 1 and 20 bars, for a period of approximately between 6 and 20 hours, of at least one vinylaromatic monomer in the presence of an effective quantity of at least one polymerisation ...

Process for fixing microorganisms onto polymer particles, characterised in that it consists: firstly, in causing superabsorbent polymers to swell in a nutritive solution containing the said microorganisms; then, after swelling, in removing any excess water; and finally, in collecting the colonised swollen gel particles thus formed and, optionally, in drying them. Application: purification of waste...

Instrument for the treatment of dental caries and mouth surgery, of the type including a laser beam emission source, the laser radiation travelling by optic fibre across the dental instrument (12) to the area being treated, characterized by having control means so that the user can adjust at will, during the course of the operation, at least one of the laser beam emission parameters selected from ...

The system according to the invention is characterised by an operating process comprising a prior step of batching during which the incoming products are sorted and assembled into batches, each batch consisting of products belonging to the same category, and in the course of which there is created a batch note describing the parameters of the batch. Subsequent processing steps use the data from th...

The present invention is directed to foams produced from poly(aryl ethers) and mixtures of poly(aryl ethers) with various non-poly(aryl ether) polymers. These foams are produced using aqueous blowing agents comprising water as the only blowing agent, or mixtures of water with another blowing agent material.

PURPOSE:To obtain a creepage distance easily by installing a core cover around a core, locating intermediate walls between a core and thick parts which have terminals. CONSTITUTION:A core 7 is incorporated into a coil bobbin 1 around which a coil 6 is wound and a pair of core covers 8 are inserted into each other through a groove 8h with the core 7 put between covering the core 7. At that time, an...