Abstract:
A conductor assembly and method for making an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one series of embodiments the assembly comprises a spiral configuration, positioned along paths in a series of concentric cylindrical planes, with a continuous series of connected turns, each turn including a first arc, a second arc and first and second straight segments connected to one another by the first arc. Each of the first and second straight segments in a turn is spaced apart from an adjacent straight segment in an adjoining turn.
Abstract:
There is described a medical examination and/or treatment apparatus with an electromagnet for generating a magnetic field for navigating a medical instrument and an x-ray device having an x-ray source and an x-ray detector attached to a bracket for visual control during the navigation, with the x-ray source and the x-ray detector being arranged on the electromagnet embodied as a hollow cylinder, on the front ends of which are located two ring coils which are arranged in parallel, between which a number of saddle coils arranged in the peripheral direction are arranged, with the hollow cylinder being arranged on a bracket which can be moved about a number of axes.
Abstract:
There is described a medical examination and/or treatment apparatus with an electromagnet for generating a magnetic field for navigating a medical instrument and an x-ray device having an x-ray source and an x-ray detector attached to a bracket for visual control during the navigation, with the x-ray source and the x-ray detector being arranged on the electromagnet embodied as a hollow cylinder, on the front ends of which are located two ring coils which are arranged in parallel, between which a number of saddle coils arranged in the peripheral direction are arranged, with the hollow cylinder being arranged on a bracket which can be moved about a number of axes.
Abstract:
Deflectors are disclosed that are suitable for use in various charged-particle-beam (CPB) optical systems as used, for example, in CPB microlithography systems. The deflectors produce a strong magnetic beam-deflecting field when energized with a relatively small electrical current. The beam-deflecting field thus produced is stable with respect to temperature changes, is little affected by eddy currents, and exhibits low aberration caused by manufacturing tolerances of the coil and core. In an exemplary method for manufacturing such a deflector, a magnetic-tape laminate is used as the core. Also, high-precision positioning of the coil and the magnetic-tape laminate is performed using photolithography and electrocasting. Positioning of the magnetic-tape laminate can be performed using a resist pattern formed by photolithography.
Abstract:
An apparatus for winding a wire onto a one-piece deflection yoke frame is such that the wire is fed from a winding supply source to a nozzle unit. A guide mechanism for holding the wire from the nozzle unit draws the wire to a work piece which is disposed on a work receiving base. The wire is then clamped by a wire clamp and wound onto the work piece by a predetermined sequence of movements of the nozzle unit, the guide mechanism and rotation of the work receiving base.
Abstract:
A winding apparatus for a deflection yoke capable of attaining winding operation at a high speed. The apparatus includes a rotor arranged in a manner to be inserted through a cylindrical spool of the deflection yoke which has an inner surface formed with longitudinal slots thereon. Reciprocating rotation of the rotor causes a wire to be introduced into any desired one of the longitudinal slots of the cylindrical spool and wound in the slot.
Abstract:
In a method of manufacturing a saddle-shaped coil a wire supplied from a winding station is laid in a continuous process by means of a wire guide against a surface of a non-magnetic molding, which surface is concave in a first direction and convex in a direction transverse to the first direction to form a number of continuous turns defining a window, the wire, as soon as it has been laid, being fixed in position instantaneously or substantially instantaneously. In one example the surface of the moulding on which the wire is to be laid and fixed is provided, prior to laying the wire, with a thin layer of contact adhesive and the wire is previously provided with a coating of contact adhesive.
Abstract:
A deflection coil consisting of a number of elementary coils formed by folding flat coils along four folding lines such that at the area of the folding lines each turn crosses all other turns. Very accurate deflection coils can thus be manufactured in a simple manner.
Abstract:
A deflection yoke for a cathode ray tube includes a core of magnetic material having front and back end portions, a front crown having a substantially flat outer surface normal to the core member axis and a slotted outer circumferential surface, a back crown member having a slotted surface normal to the core member axis, and a plurality of wire turns toroidally wrapped about the core and front and back crown members with the front crown member having a single layer of wire turns and the back crown member having a first layer at wire turns extending radially and added layers of wire turns extending non-radially to the front crown member. A process for fabricating a deflection yoke includes selecting and affixing crowns to a core member and wrapping wire turns thereon to include a single front layer and multiple back layers.
Abstract:
A method for winding wire strands onto toroidal cores in which a length of wire is fed along a radially inwardly facing channel in an arcular guide to form a loop. As the leading end of the wire completes this loop it hugs the channel's radial boundary to form a second loop radially inside the first as the wire feeding continues. A gap is provided in the radial boundary of the channel for receiving the core with the core's central aperture in this gap so as each loop is formed the wire in that loop passes through the core. The upper and lower boundaries of the channel are spaced apart so as to maintain the loops in a single concentric layer around the guide and through the core. When enough wire has been fed the feeding is stopped, but the movement of the loops around the guide continues and winds (tightens) at least one new turn of wire onto the core for every complete circulation of the loops around the guide. Two or more wires can be wound onto a core at the same time with the method according to the invention.