Abstract: A resonator for use in a marker, with a bias element which produces a bias field, in a magnetomechanical electronic article surveillance system is composed of an amorphous magnetostrictive alloy containing iron, cobalt, nickel, silicon and boron in quantities for giving the resonator a quality Q which is between about 100 and 600. The amorphous magnetostrictive alloy is annealed in a transverse magnetic field for giving it a B-H loop which is linear up to about 8 Oe and an anisotropy field strength of at least 10 Oe. When the resonator is excited to resonate by a signal emitted by the transmitter in the surveillance system, it produces a signal at a mechanical resonant frequency which can be detected by the receiver of the detection system. Due to the resonator having a quality Q in the above range, the signal produced by the resonator in a first detector window, beginning approximately 0.

Abstract: A method of treating a substrate for an electrophotographic photosensitive member by a process comprises the steps;a) cutting the surface of the substrate to remove the surface in the desired thickness; andb) bringing the cut surface of the substrate into contact with water having a temperature of from 5.degree. C. to 90.degree. C., having a resistivity of not less than 11 M.OMEGA..multidot.cm at 25.degree. C., containing fine particles with a particle diameter of not smaller than 0.2 .mu.m in a quantity of not more than 10,000 particles per milliliter, containing microorganisms in a total viable cell count of not more than 100 per milliliter and containing an organic matter in a quantity of not more than 10 mg per liter, for at least 10 seconds at a pressure of from 1 kg.multidot.f/cm.sup.2 to 300 kg.multidot.f/cm.sup.2.

Abstract: A ribbon-shaped strip of an amorphous magnetic alloy is heat treated, while applying a transverse saturating magnetic field. The treated strip is used in a marker for a pulsed-interrogation electronic article surveillance system. A preferred material for the strip is formed of iron, cobalt, silicon and boron with the proportion of cobalt exceeding 30% by atomic percent.

Abstract: A method for manufacturing three-dimensional surface figures on a soft magnetic material. An insulating layer is first laid on a soft magnetic material layer and a foam intermediate layer is then laid on the insulating layer. A face layer previously printed with figures is finally laid on the intermediate layer. Thereafter the face layer is embossed and molded with concave/convex three-dimensional figures corresponding to the present embossing stripes of a molding device by a high frequency device so as to provide an improvement over conventional three-dimensional figures made by injection molding which cannot have figures printed by halftone block printing or color separation so as to eliminate the shortcomings existing in planar printed magnetic products which are only printed with planar figures.

Abstract: A magnetic roll for use in roller pairs of a drafting system on a textile machine. Each magnetic roll includes a central pole member having a rare earth magnet positioned on either side thereof. An end pole member is provided adjacent each magnet, and a cot is provided next to each end pole member for gripping and propelling fibers between the roller pairs of the drafting system.

Abstract: Apparatus and method for producing a flexible antenna suitable to be incorporated in a badge or similar object. The antenna comprises electrical windings (28, 38) surrounding a flexible antenna core (26, 36). The antenna core (26, 36) is of a material having a high quality factor formed of a plurality of mutually insulated, longitudinally extending chains of magnetic soft material of high .mu.. According to one embodiment, a powder of small particles of a magnetic soft material of high .mu. is mixed with a synthetic resin so that a high saturation of magnetic material in the mixture is formed in a vacuum. The mixture is cured in a strong magnetic field so that the particles form chains (18A, 18B, 18C) of the particle parallel to the applied magnetic field.

Abstract: A device for feeding apertured parts by inserting a guide rod for a feed rod into the aperture of a part in the temporarily secured state. This device is characterized in that the feed rod has a flat cross-section and the amount of removal of its material on one side thereof is greater than on the other side, and in that a part locking section is provided on the ceiling of the temporarily securing chamber on the side where the amount of removal is greater. Further, a guide member is provided which extends parallel with the guide rod for preventing rotation of parts. The length of the guide rod is less than that of the guide member to provide a rolling space for parts.

Abstract: An apparatus for feeding slender parts has a feed rod adapted to magnetically hold a slender part on its front end, and a projecting piece formed on the front end of the feed rod for supporting the part from below. In the case of a headed slender part such as a projection bolt, the projecting piece includes a stopper portion for receiving the head and a support portion for supporting the stem portion of the part. When the feed rod is extended until it reaches a predetermined position, the effect of the magnetic force on the part is forcibly nullified, with the result that the part, while rotatively rising, falls under its own weight to fit in a bolt hole or the like in a mating member positioned below.

Abstract: The emission electrode (12) has a support section (16), which imparts mechanical strength, with emission tips (20) disposed in at least two rows and directed on both sides towards adjacent collecting electrodes. It is composed of a single-piece metal sheet symmetrically folded to form the support section (16) which metal sheet has emission arms (18) which are integrally formed outside the folded support section (16) and extend over its entire active length (1) along the central plane (E) between the collecting electrodes (10) and which have emission tips (20) extending in the plane (E) or directed on both sides towards the adjacent collecting electrodes. The metal sheet is bent through more than a right angle on the inside of the emission arms (18) to form a double loop.

Abstract: A process, system, and improvement for a process for electromagnetic forming of a workpiece in which characteristics of the workpiece such as its geometry, electrical conductivity, quality, and magnetic permeability can be determined by monitoring the current and voltage in the workcoil. In an electromagnet forming process in which a power supply provides current to a workcoil and the electromagnetic field produced by the workcoil acts to form the workpiece, the dynamic interaction of the electromagnetic fields produced by the workcoil with the geometry, electrical conductivity, and magnetic permeability of the workpiece, provides information pertinent to the physical condition of the workpiece that is available for determination of quality and process control. This information can be obtained by deriving in real time the first several time derivatives of the current and voltage in the workcoil.

Abstract: Method of preparing an anisotropic permanent magnet by a powder metallurgical technique, in which, the step of orientation of anisotropically magnetic particles during shaping by compression to give a green body prior to sintering, the magnetic field is applied pulse-wise to the mass of magnetic particles and an impacting compressive force is applied to the thus oriented particles in the direction parallel to the magnetic field during the period in which a pulse of the pulse-wise magnetic field is sustained. This method ensures a much higher degree of particle orientation than in the conventional static-field method by virtue of the possibility of obtaining a much stronger magnetic field without problems which otherwise are unavoidable. The principle of the method is applicable to the preparation of a cylindrical or annular permanent magnet magnetizable in a plurality of radial directions.

Abstract: An improved chip disposer which removes chips or iron chips produced from a machine tool by using magnetic force is disclosed.

Abstract: Apparatus and method for forming radial orientation rare earth-transition metal magnets in continuous arc rings by hot isostatic pressing. A method includes the steps of compacting rare earth-transition metal powders having a particle size up to 40 microns into radially oriented rings in a mold provided with a radially aligning field, stacking a plurality of compacted radially oriented rings within an annular cavity within a sealed, evacuated canister to form a cylinder of a predetermined height, subjecting the canister to temperatures in the range of 900.degree. to 1150.degree. C. under a gas pressure of 15 kpsi to densify the compacts, and cooling the canister and the compacts to room temperature.

Abstract: Magnetic powders have a thin film of a nitrogen- or sulfur-containing organic polymer synthesized on the individual particles by plasma polymerization. The film is not more than 100 .ANG. in thickness.

Abstract: Rail heads are planed with a mobile machine moving continuously along a track and comprising a frame and a rail planing tool mounting linked to the frame. The mounting is adjusted vertically relative to the running surface of the rail head and pressed thereagainst, and guided along the rail head by a guide roller laterally guiding the mounting along a selected side of the rail head and two additional guide rollers vertically guiding the mounting along the running surface of the rail head. A tool head including a tool holder is mounted on the mounting for displacement relative thereto and a rail planing tool is replaceably mounted in the tool holder and detachably carries a cutting blade having a cutting edge for planing chips or shavings off the rail head by the forward thrust of the machine. A pick-up magnet removes the chips.

Abstract: A method of manufacturing a piston for internal combustion engines which utilize a core molding or casting system for forming a hollow chamber for the passage of cooling oil therethrough. The manufacturing method includes the steps of preparing a core so as to have at least a first and second foot portion extending therefrom; inserting a bar member made of magnetic materials within each of the first and second foot portions; positioning at least one permanent magnet on a core box; and fixing the core to the core box via the bar members due to the magnetic flux of the permanent magnet.

Abstract: Rail heads are planed with a mobile machine moving continuously along a track and comprising a frame and a rail planing tool mounting linked to the frame. The mounting is adjusted vertically relative to the running surface of the rail head and pressed thereagainst, and guided along the rail head by a guide roller laterally guiding the mounting along a selected side of the rail head and two additional guide rollers vertically guiding the mounting along the running surface of the rail head. A tool head including a tool holder is mounted on the mounting for displacement relative thereto and a rail planing tool is replaceably mounted in the tool holder and detachably carries a cutting blade having a cutting edge for planing chips or shavings off the rail head by the forward thrust of the machine. A pick-up magnet removes the chips.