1611 results about "Coil structure" patented technology

An embolic coil which can be used for occlusive purposes in the vasculature is described. A mandrel for manufacturing a coiled structure, and method / process for manufacturing a coiled structure is described.

The present invention provides a thin film write head having an upper and lower pole structures and conductor turns forming a winding for generating magnetic flux. The conductor is formed with a non-planar top surface. The winding of the present invention may be formed of lower and upper turns. The upper turns may be formed with a non-planar top surface, a non-planar bottom surface, or both. It is preferred that the bottom surface of the upper conductor turns be coherent with the non-planar top surface of the lower conductor turns. The non-planar top surface may be formed by removing corners formed during deposition between a generally planar top surface and abutting side walls. The corners may be removed by ion milling to form the non-planar top surface. The conductor may be copper with the non-planar top surface having sloping facets. The thin film write head of the present invention may be utilized to provide an improved data storage and retrieval apparatus. The preferred embodiment provides reduced coil resistance thereby reducing Johnson Thermal Noise and power dissipation. It also allows for reduced yoke length and reduced stack height while providing low apex angles to expand and improve yoke material deposition thereby improving head response and operational frequency.

Coil structures and isolators using them. A coil(s) is (are) used as a magnetic field-generating element(s) paired with another coil(s) or other magnetic field-receiving element(s). The coil(s) is(are) formed in or on a substrate which does not include some or all of the driver (i.e., input) or receiver (i.e., output) circuits. The coil(s) and magnetic field-receiving element(s) thus can be manufactured separately from the driver and / or receiver circuitry, using different processes, instead of subjecting the chip areas containing both input and output circuits to post processing to form the coil(s). Isolators can be assembled using such coils with a resultant lower cost. Isolators also can be assembled using transformers made from such coils wherein the transformers can be driven on either of their windings in order to provide bi-directional isolation with a single transformer.

A high-current electrical coil includes a plurality of flat, electrically-conductive strips bent to define together a coil in which the electrically-conductive strips are disposed coaxially and extend longitudinally with respect to the longitudinal axis of the coil. Each of the electrically-conductive strips is bent to define at least a part of a turn of the coil. One electrically-conductive strip has an outer end carrying a first connector terminal for the coil and projecting outwardly of the coil; and another electrically-conductive strip has an outer end carrying a second connector terminal for the coil and projecting outwardly of the coil. Each of the electrically-conductive strips includes inner ends in electrical continuity with each other, and intermediate portions electrically-insulated from each other such that the plurality of electrically-conductive strips together define a coil exceeding one turn between the first and second connector terminals.

Linear electric generators include stationary windings and armature magnets arranged to reciprocate axially relative to the windings, or stationary magnet structures and movable windings arranged to reciprocate relative to the stationary magnet structures. The armature magnets or stationary magnet structures are in the form of multiple pole magnets made up of a plurality of individual pole structures, each pole structure including a pair of magnets joined to each other with facing poles of like polarity. In addition, the windings may be in the form of a double winding structure including at least one first clockwise winding and at least one second counterclockwise winding arranged in a multi-layered stacked arrangement.