Abstract: A millivoltage generator is provided in which a rod formed of a first metal extends in spaced relationship within a tubular sheath of a second metal, the rod being welded to the sheath at one end to form a conductive junction and held in place in the sheath by an epoxy seal proximate the other end of the rod which prevents moisture from collecting inside the sheath. The space between the sheath and the rod is filled with an insulating material. Preferably, a wire connector is fixed to the end of the rod which extends through and beyond the epoxy seal. It is also preferred that a bushing be welded to the outside of the sheath proximate the epoxy seal and that the bushing be externally threaded to facilitate mounting of the millivoltage generator. A second metal rod welded to the bushing extends from the bushing parallel to the first metal rod and beyond the epoxy seal. Another wire connector is fixed to the second metal rod to facilitate electrical connection of the millivoltage generator.

Abstract: A transmission member for a worm gear having a thrust ring placed over the shaft of a motor. The worm gear is slip-fit over the shaft and has a coupling head with a pair of projections facing away from the motor. A coupling washer is press-fit onto the motor shaft and has a pair of projections as well, each of which is fitted with an O-ring. The coupling washer is mated to the worm gear so both sets of projections intermesh and form a torque-transmitting arrangement, with the O-rings acting as a buffer between the two sets of projections and allowing the motor shaft to turn relative to the worm for a fraction of a revolution to gain inertia and speed helpful to break loose a jammed gear train.

Abstract: An essentially elongated strip is formed for manufacturing a ring-shaped element of an electrical machine. The strip has an electromagnetic effective area which is oriented perpendicularly to an axis of rotation of the ring-shaped element. The strip is essentially elongated, and has segments which are separate from one another and together form the effective area of the element. Adjacent segments are directly connected in each case by a web which is integrally formed on the outside of the element. The web is formed in such a way that it absorbs an elastic deformation during the bending of the strip, whereas the segments remain essentially free of elastic deformation.

Abstract: The invention relates to a fitting arrangement for an antivibration mounting of an electromotor (1) on a load-bearing component by means of several interelements (6) arranged distributed around the perimeter and consisting of an elastic material. To always achieve an optimum vibration isolation independently of the motor's fitting position, it is provided that the interelements (6) are designed as oblong, radially aligned web elements (8) and are arranged axially, clamped under elastic prestress, between a mounting surface (12) on the motor side.

Abstract: In a stator of a vehicle ac generator, a slot insulator has a portion closing the opening of a slot. Therefore, portions of the stator winding disposed in the slot can be retained in the slot without an additional member, and water or the like can be shut out.

Abstract: The coils on the disc-type armature of an electro mechanical machine are all wound in the same direction (rotational sense). The coils on each face of the armature are formed into at least two series connected groups of coils which are disposed on the surface of the member so that each coil of one group is located between two coils from another group, and the two coils at one end of the interleaved groups are connected together.

Abstract: Addressed herein are commutators and methods of manufacturing them. The methods permit the carbonaceous material and core of a commutator to be molded simultaneously, rather than in a two-step process, and can eliminate one of two curing procedures used in connection with other manufacturing techniques. The necessity of machining the inner surface of the commutator shell to remove undesired excess phenolic or other material additionally is avoided by use of the techniques detailed herein. Commutators formed according to these methods may have increased useful lives and provide better performance than others presently available.

Abstract: In manufacturing the iron core of a divided stator, a plurality of pole pieces with fitting portions formed on both sides of pole portions are laminated and fixed to one another. A plurality of the pole piece laminates are arranged in the form of a ring and the outer or inner circumference is held with a jig. A non-magnetic and high-rigidity connecting member is press-fit in the laminating direction into fitting portions of a plurality of adjacent pole piece laminates, thereby a plurality of adjacent pole piece laminates are positioned with high accuracy and rigidly connected to one another.

Abstract: An energy storage device comprising a large scale flywheel supported by a fluid bearing. The energy storage device is a very large scale structure having a flywheel of a diameter greater than 100 feet and a concrete steel reinforced rim weighing in excess of 1000 metric tons. In off peak periods the apparatus is operated as a motor with energy input causing the rim to rotate up to a predetermined speed and to maintain rotation at that speed in the power take off mode during peak power time periods, the operation of the electrical circuitry is reversed and the flywheel generates electrical energy which is delivered by the storage device to the power grid. As energy is delivered the rotational speed of the flywheel diminishes and gravitational waves capable of being shaped and modulated are generated. Likewise as energy is added to the device the rotational speed of the flywheel increases and again gravitational waves capable of being shaped and modulated are generated.

Abstract: A permanent magnetic dynamo comprises a wind gatherable stand having a tapered outer wall surface that extends from the lower end toward the upper end of the wind gatherable stand in order to guide wind upward; a roof supported through support shafts fixedly standing at the peripheral edge of the wind gatherable stand such that an open space is formed above the wind gatherable stand; a rotary shaft pivotably supported by the roof and the wind gatherable stand and having a horizonal drive blades located in the open space at upper end thereof; a permanent magnetic rotor disposed within the wind gatherable stand and fixed to the rotary shaft to rotate to a vertical axis together with the rotary shaft; stator windings disposed as to face annular permanent magnetic cylindrical portions which are connected to horizontal arm portions constituting the permanent magnetic rotor; and diamagnetic annular attachment plates fixedly provided within the wind gatherable stand, so that the permanent magnetic dynamo can efficie

Abstract: An electrostatic actuator and a method for actuating a micro-machine structure. The micro-machine structure has a stationary part and a movable part that is relatively movable between a rest position and an activated position and is resiliently connected to the stationary part. The stationary part and the movable part form a flexible sub-structure having a resonant frequency. The actuator comprises a first electrode disposed on the stationary part and a second electrode disposed on the movable part. The actuator also includes a wave generator, connected to the first electrode and the second electrode, for generating an alternating voltage signal to the first electrode and a reference voltage signal to the second electrode so as to impart an electrostatic force between the stationary and movable parts and to move the movable part from the rest position to the activated position. The electrostatic force for fixed amplitude wave has a constant force component and a vibratory force component.

Abstract: A small, low-voltage direct current (DC) motor for use as an educational device for students. The motor is made from simple hardware such as nails, magnets, threaded rods, nuts, washers and common household materials such as wood scraps, paper clips and milk or water containers. The preferred embodiment consists of a motor shaft 1, armature pole pieces 2 comprising nails, commutator segments 3, non-metallic tubing 4, non-metallic washers 5 and 6, metallic washers 7, hot-glue or epoxy filler 8, armature pole nuts 9, magnetic wire 10, commutator compression nuts 11, permanent field magnets 13, brushes 14 and terminal screws 15. In other embodiments, the nail motor can also be used to demonstrate alternating (AC) operation by replacing permanent field magnets with handmade nail- or bolt-electromagnets. The motor can be used to motorize models utilizing materials and instruction from a kit. The motor can also be used to demonstrate electric generator principles in the mill-volt range.

Abstract: An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.

Abstract: A drive assembly for driving an adjustable unit in a motor vehicle includes a motor/transmission and an associated control unit. The motor/transmission is suitable for adjusting an adjustable part in a motor vehicle for normal applications. The transmission is driven by the motor to adjust the adjustable part. The motor and the transmission are separated by an interface region. The motor includes a magnetic field generator for generating an alternating magnetic field as the motor drives the transmission. The control unit can be readily connected to the motor/transmission for controlling the adjustment of the adjustable part for more advanced applications. To be readily connected to the motor/transmission, the control unit includes a profiled projection having a hollow chamber. A magnetic sensor is positioned inside the hollow chamber.

Abstract: A permanent magnet direct current machine is provided. The rotor has permanent magnets acting as poles for feeding magnetic flux to the stator. The stator has a multiplicity of "slot paths". Each slot path has as many slots as there are poles on the rotor and also has as many coils as there are poles on the rotor. The coils of a slot path are equally spaced around the axis of the machine and each coil of the slot path is wound through two slots. The coils of a slot path may be switched from series to parallel to hybrid relationships to vary the operating characteristics of the machine.

Abstract: A rotary-arm drive includes a wobble-absorbing magnetic bearing (WAMB). One end of the arm engages a load-carrying surface. The other end rotates with a power-carrying rotary shaft. The arm transmits power at least one way between surface and shaft. The WAMB is between the first end of the arm and the surface.As to one aspect of the invention, the WAMB directly transmits force mechanically, but absorbs mismatched motion, between end and surface. Preferably the bearing has at least two elements (more preferably rolling elements, ideally balls) fastened to neither the end nor the surface.As to a second aspect, the drive is a traveling antirotation module. The first end rides on a fixed guideway that defines the surface; the other is fixed to a mechanical element forming the shaft and travels, carrying the arm, along a drive direction and is subject to undesired rotation about the axis. Thus the arm and its engagement with the guideway help restrain the element against rotation.

Abstract: A reluctance machine including a plurality of phase windings where each phase winding comprises a plurality of fractional-pitched coils. The reluctance machine may be coupled to a drive that can energize one, two or more of the phase windings to provide output torque that is derived from: (i) the self-inductances of the phase windings; (ii) a combination of the self-inductances of the phase windings and the mutual inductances between the phase windings; or (iii) the mutual inductances between the phase windings.

Abstract: An electromagnetic thrust bearing having reduced windage losses, improved structural integrity, and enhanced electromagnetic flux density. The present invention provides an electromagnetic thrust bearing having a first annular stator segment and a second annular stator segment joined thereto to define an annular electromagnetic coil chamber having an L-shaped cross-section. By employing first and second stator segments, the electromagnetic coil can be precision wound onto one segment without interference from the other segment, and then the two segments can be joined after the precision winding has been performed. The first segment is joined to the second segment at a location remote from the stator poles to thereby provide a more structurally sound assembly able to better withstand loads imposed thereon. The stator segment pole faces include axially extending lips to maximize electromagnetic flux density and thus load carrying capacity.

Abstract: A method of controlling switching of a tri-state switching amplifier having two switching legs, two switches in each leg, and a load connected to the junction between the switches of each leg, a power supply and a capacitor connected to the opposite ends of each leg, a first pair of the switches defining an idle state in which current circulates through the load and the first pair of switches, a second pair of the switches defining a Charge state in which the load is connected to the power supply and current through the load increases and a third pair of switches defining a Discharge state in which the load is connected to the power supply and current through the load decreases, the method comprising generating a first PWM signal at the beginning of each pulse of a clock signal; generating a second PWM signal when a binary current error signal changes state; generating, at the beginning of each pulse of the clock signal, a Direction signal which is the inverse of the current error signal; and placing the ampl

Abstract: A medical ultrasonic generator having an ultrasonic radiator wound with coils connected to a high-frequency oscillator, when the radiator is provided with a sintered element consisting essentially of Ni--Zn having a thickness of 8 to 20 mm. The ferrite element can effectively apply the ultrasonic oscillation to a human body to improve the effect of medical treatment. Further, the medical ultrasonic generator is superior in terms of workability as a medical treatment because of its ability to effectively apply the ultrasonic oscillation to the affected part even through the clothing worn by a patient.