Abstract: A permanent magnet rectangular bar shaped to form a helix having a central ore and a longitudinal axis. The magnetic orientation of the helical permanent magnet bar is along the longitudinal axis forming a transverse helical magnetic field. An electron beam or charged particle passing near the longitudinal axis experiences acceleration causing the charged particles to radiate creating a high energy radiation source. In another embodiment, first and second permanent magnet helical bars are intertwined together, forming a cylindrical tube, with each of the intertwined helical bars having a magnetic orientation along the longitudinal axis in opposing directions. In another embodiment of the present invention, an iron ribbon or other high permeability magnetic material is interposed between cut-out portions between first and second intertwined helical permanent magnet bars. This effectively augments the transverse magnetic field.

Abstract: A dipole magnet structure includes a pair of spaced pole pieces and a pair of permanent magnets secured in alignment with the pole pieces and connected by a magnetically conductive yoke for producing a uniform magnetic field within a predetermined spacial volume therebetween. The opposed faces of the pole pieces are dish-shaped with a flat center area surrounded by an outwardly and forwardly curved rim surface which extends from the center area and which increases in forward curvature as it extends away from the center area to insure homogeneity in the predetermined spacial volume as defined by the space between the pole piece center areas.

Abstract: A magnetic array for periodic magnetic devices is formed as a series of pole modules each constructed from rectangular components. Field strengths in excess of 2.0 T are achieved by surrounding each pole module on all available sides with magnet blocks. Less magnet material is used than in prior modules that produced equal field strengths and magnet material is more efficiently used by reducing the material scrap associated with manufacture of prior art pole and magnet designs.

Abstract: Annular portions are arranged on mutually confronting surfaces at circumferential edge portions of low-temperature containers, the annular portions forming annular containing portions whose cross section is rectangular. Not only a side coil among a group of coils forming a collective coil body is disposed inside the containing portion, but also a gradient magnetic field unit, a radio-frequency transmission coil, and a reception coil are disposed inside a recessed portion so as to be integrated with one another into a single body, the recessed portion being formed so as to be surrounded by the corresponding annular portion. The side coil supplies more than half a designed magnetomotive force. Since a distance J of the mutually confronting low-temperature containers, i.e.

Abstract: The present invention relates to a control and signalling device for a protective switching apparatus of the relay switch type which is provided with power switches (1) and a protection assembly (4) and is capable of detecting faults (overloads or overcurrents) on each current path associated with a switch (1), this device being actuated by a manual control member (51) which can take an operating "run" position corresponding to closed contacts, a "stop" position corresponding to open contacts and a "trip" position corresponding to the position after detection of a fault, characterised by the fact that it comprises a mobile spring loaded cam (52) actuated by a triggering spring (54) and capable of--from the "run" position in which it is locked by an automatic interlock (55) and after the triggering and release of the interlock (55)--of turning the manual control member (51) which then actuates the coil switch (81).

Abstract: A power switch for use with a personal locator beacon (PLB), or an emergency position indicating radio beacon (EPIRB), that prevents accidental activation of the beacon to prevent false alarm transmission of emergency signals. The personal locator beacon includes electronic circuitry housed in a portable hand-held housing that includes a fail safe power switch which has a lever arm that is selectively movable between first and second offset recessed cavities formed in the housing. The lever arm is rotatable about a shaft between an "off" position wherein the lever arm is received within the first cavity, and an "on" position wherein said lever arm is received within the second cavity. An edge portion formed by the offset cavities stops the lever arm from rotating from the first position to the second position unless the lever arm is manually moved laterally along the shaft to clear the edge portion.

Abstract: An apparatus and method for creating a magnetic beam wherein a focusing magnet assembly (45) is comprised of a first opposing magnet pair (20) and a second opposing magnet pair (30) disposed in a focusing plane, each magnet of the respective opposing magnet pairs having a like pole directed towards the geometric center of the focusing magnet assembly (45) to form an alignment path, two like magnetic beams extending from the alignment path on each side of the focusing magnet assembly (45), each beam being generally perpendicular to the focusing plane. A like pole of an unopposed magnet (10) can be directed down the alignment path from one side of the focusing magnet assembly (45) to produce a single magnetic beam extending generally perpendicular from the focusing magnet assembly opposite unopposed magnet (10). This beam is a magnetic monopole which emits pulses, levitates, degausses, stops electronics and separates materials.

Abstract: An electromagnetic actuator includes a core made of a soft magnetic material, a permanent magnet located between a pair of ends of the core, the permanent magnet being supported for movement, and an electrically conductive coil wrapped about a portion of the core. The reluctance of the core is adjustable to alter movement of the permanent magnet as a function of time upon application of electrical current to the coil of the electromagnetic actuator.

Abstract: A shim assembly for a pole face of a magnet. A non-magnetizable shim tray may be positioned proximate, and preferably is attachable to, the pole face. The positioned shim tray has a surface hole having longitudinally adjacent first and second portions. The second portion has a generally circular circumference. The first portion has a perimeter generally identical to the circumference but with, for example, a flat region. A shim holder has a perimeter generally identical to the perimeter of the first portion so that it may be inserted through the first portion and into the second portion of the surface hole. A predetermined shim is removably attachable to the shim holder. The inserted shim holder, with the attached shim, is rotatable, and, when so rotated, the flat regions of the perimeters of the shim holder and the second portion of the surface hole are misaligned.

Abstract: A multipolar magnetic ring that generates a sinusoidal magnetic field has a cylindrical shape and two magnetic poles, north (N) and south (S), which are imbricated one in the other in such a manner that their widths (L.sub.p) are equal and constant. Two magnetic transitions between each of the two poles each follow a continuous curve that moves by one half pole width for each quarter of a turn of the magnetic ring, with the two curves being shifted by 180.degree. so that the magnetic field has a single period per turn of the magnetic ring. The magnetic field is implemented either along two spirals (s.sub.1 and s.sub.2) on one of the flat faces, or along two helixes (h.sub.1 and h.sub.2) on its cylindrical side. The magnetic ring may be used in absolute-position sensors, notably in bearings.

Abstract: A superconducting coil mounted on, and in heat transfer relationship with, a heat conducting support cylinder. The superconducting coil is electrically insulated from the support cylinder by means of a refractory ceramic coating, such as aluminum oxide, on the surface of the cylinder or on an intermediate layer which itself is on the surface of the cylinder. To resist Lorentz forces, the superconducting coil may be positioned within a helical groove machined into the inside or outside surface of the cylinder.

Abstract: The invention relates to a switching arrangement for connecting and/or separating two sections (7, 8) of an electrical line (3), said arrangement comprising a switching device (10) having contact elements (11, 12) which are connected to said two line sections (7, 8) as well as a plug device (15) having an actuation element (20) and plug contacts (18, 19).For providing a switching arrangement of particularly simple design for connecting and/or separating two sections of an electrical line, the present invention proposes that the contact elements (11, 12) be electrically connected to the actuation reeds of a reed contact (25) and the actuation element (20) be means magnetically influencing said reed contact which will open said reed contact (25) when the plug devide (15) is plugged in.

Abstract: A superconducting magnetic coil includes a plurality of sections positioned axially along the longitudinal axis of the coil, each section being formed of an anisotropic high temperature superconductor material wound about a longitudinal axis of the coil and having an associated critical current value that is dependent on the orientation of the magnetic field of the coil. The cross section of the superconductor, or the type of superconductor material, at sections along the axial and radial axes of the coil are changed to provide an increased critical current at those regions where the magnetic field is oriented more perpendicularly to the conductor plane, to thereby increase the critical current at these regions and to maintain an overall higher critical current of the coil.

Abstract: The present invention relates to a planar type electromagnetic actuator of two axis construction, having two movable plates (12A, 12B) with pivotal supports at right angles to each other. A pair of static magnetic field generating devices (4, 5) are arranged facing each other on either side of the movable plates (12A, 12B), and aligned with one diagonal direction of the movable plates (12A, 12B) so that a magnetic field acts on the movable plates (12A, 12B). A magnetic force due to the mutual action with a current flowing through drive coils (15A, 15B), acts on the movable plates (12A, 12B), to thus drive the movable plates (12A, 12B). As a result, the number of components for the magnetic field generating devices can be reduced, the construction of the electromagnetic actuator simplified, and construction costs reduced.

Abstract: A Chiron Twister magnet structure is provided from a right circular cylinder constructed of a passive material, such as iron, formed into a continuous helical bar deployed around a tunnel-like working space, in which it produces a transverse helical magnetic field, and through which a charged particle beam is sent by an electron beam means, causing the electrons to move in a helical pattern. The continuous helical bar is coupled to an external magnetic field means. The continuous helical bar has a substantially rectangular cross section, with a plurality of south poles opposed by a plurality of north poles. The continuous helical bar may be constructed of a circular right cylinder, such as a pipe, made of iron, or any other high saturation passive magnetization material.

Abstract: A molded case circuit breaker includes a generally "Z" shaped intermediate latch structure which has upper and lower substantially planar sections that are each bent at an angle with respect to a center pivot section. The upper portion of the intermediate latch includes one or two latch surfaces. One of these latch surfaces engages the cradle of the operating mechanism of the circuit breaker, to latch the operating mechanism when the circuit breaker is closed. The other latch surface engages a trip bar or an intermediate latch bar, which is rotated by the trip unit when an overcurrent condition occurs. The lower portion of the intermediate latch structure also includes a latch surface which may engage a trip bar. This latch surface is sloped such that when the latch surface of the trip bar is moved along this sloped latch surface, the trip bar rotates.

Abstract: A safety switch includes a spring-biased locking pin which is displaceable axially inside a switch housing by a lifting magnet against the biasing force of the spring to switch a switching element between a blocking position and a release position, and a retention magnet which holds the locking pin in the release position when the lifting magnet is de-energized.

Abstract: Photoelectric reflective object sensors are mounted in an exteriorly mounted auxiliary switch case to detect a member on a movable contact assembly of the contactor to produce logic level output signals indicative of the operational state of the contactor electromagnet. One or a pair of photoelectric sensors are used in a side mounted auxiliary switch to detect the contactor movable contact assembly in the energized or de-energized position, or en route between the two positions. A single photoelectric sensor is used in a top adder auxiliary switch to detect if the movable contact assembly is or is not in the extended (de-energized) position. The auxiliary switches provided logic level output signals directly usable with microprocessor based controllers.

Abstract: A magnetic holding device comprises a housing (2) and includes a number of magnetic regions. Each magnetic region has a rare earth or bimetallic disc magnet (9) and a ferromagnetic plate (10) located within an aperture within the housing (2). A filling material (11) surrounds both the magnet (9) and disc (10).

Abstract: Magnetic field homogeneity correction system including coils for a superconducting magnet assembly are wound on the same coil forms as the axially spaced main magnet coils such that they are superimposed radially to simplify the system including design requirements for associated passive shimming and reduce transverse magnetic forces therebetween, and improve magnetic field homogeneity.