Abstract: An electromagnetic vibration generator or shaker comprises an armature suspended from a stator and having a coil carried by the armature located in an air gap in the stator. A D.C. magnetic field is produced across the air gap and when an alternating current is fed through the armature coil the armature virbrates along its longitudinal axis. According to the invention the armature is suspended at its periphery by a plurality of suspension members which are arranged in pairs and allow free movement of the armature along its axis of vibration. However the two members of each pair are arranged at an angle to each other and exhibit a stiffness to lateral movement of the armature so as to restrain turning forces acting on the armature in either direction of rotation.

Abstract: A magnet holder for an electromagnetic diaphragm pump comprising a reinforcing member having at least in part thereof a width smaller than the distance between a pair of magnets placed in the predetermined positions in magnet insertion windows is provided integrally with the magnet holder between the pair of magnet insertion windows for juxtaposing and holding a pair of flat plate-shaped magnets in the same plane, so that the mechanical strength of the magnet holder is prevented from decreasing. And positioning members may be formed in the reinforcing member for pressing the pair of magnets inserted into the magnet insertion windows toward the diaphragms attached to opposite ends of the magnet holder, thereby positioning the magnets with enough accuracy and determining the distance between the magnets.

Abstract: A vibrator for diaphragm pump and magnet holder for the vibrator wherein a stopper is formed on the inner perimeter of the side wall of the magnet insertion window in the vicinity of one main plane of the magnet holder, and that the supporting surface of the stopper for the magnet is fixed at the distance of 1/2 of the difference between the thicknesses of the magnet holder and the magnet to be inserted into the magnet insertion window, from the one main plane. A plurality of said stoppers are formed partially along the inner periphery of the magnet insertion window. Recesses are formed in appropriate portions of the perimeter of the magnet insertion window, into which the bonding agent is made to flow.

Abstract: A compact torque motor providing bi-directional, limited angle reactionless torque to opposed structures. A motor (10, 150) includes an X-shaped core (12), and first and second pole pieces (14 and 16), which are disposed at opposite sides of the core. Two opposed legs on the X-shaped core (12) comprise a first core section (18), which is transverse to a similar second core section (20). A first electromagnetic coil (22) is formed on the first core section and a second electromagnetic coil (24) on the second core section. When the first and second electromagnetic coils are alternately energized, tabs (38, 40, 44, and 46) disposed approximate the ends of the first and second pole pieces are attracted to the resulting magnetic poles (26 and 28, 30 and 32), causing the pole pieces to counter-rotate back and forth about a central axis (48). Magnetic flux developed by the first and second electromagnetic coils is conveyed through the tabs and the first and second pole pieces between the opposite magnetic poles.

Abstract: An electromechanical linear motor incorporating a number of electrically conductive drive coils arranged axially and embedded in a composite matrix so as to form a hollow cylinder within which a piston or pistons are placed. Permanent magnets or conductive coils arranged around the circumference of the pistons interact through magnetic coupling with the drive coils so as to cause the piston to move in accordance with the currents applied to the drive coils. These currents are supplied through logic control circuitry which receives inputs from a number of sensors including piston position sensors, thermostats, pressure transducers and timers. Based on the information received from these sensors, a microprocessor controlled power circuit provides electrical pulses of a frequency, amplitude and duration designed to produce piston motion appropriate to the specific application.

Abstract: A linear motor comprised of a plurality of primary coils arranged and spaced sequentially. A fluid intake manifold and a fluid exhaust manifold with at least one conduit in fluid communication between the intake and exhaust manifolds, such that the fluid intake manifold, fluid exhaust manifold and conduit are associated with the primary coils to control the temperature of the motor.A robotically controlled linear motor apparatus for manipulating physical arms in one or more dimensions, with at least one linear motor comprised of primary coils sequentially and spacially arranged and a secondary coil positioned magnetically adjacent to the primary coils. A fluid circulating manifold as described above. A commutator for selectively energizing the primary and secondary coils to create a magnetic imbalance therebetween so that the secondary coil is urged in a direction opposite to that of the flux imbalance.

Abstract: An electromagnetic reciprocating motor or pump for use for providing mechanical force for actuation of other fluids or components, and includes a cylinder provided with closures at each end, at least a pair of electromagnets operatively associated with the cylinder, and surrounding the same, a magnetically responsive piston provided within the cylinder and capable of longitudinal shifting reciprocally within the cylinder upon the sequential energization of the electromagnets, and either a mechanical actuator or electronic triggering components cooperating with electrical circuitry and connecting with the electromagnets which upon energization charging the electromagnets in timed sequence for inducing their reciprocal shifting of the piston within the cylinder means.

Abstract: A generator for providing electric energy in a borehole during drilling thereof, the generator comprising an anchor which is movable in a reciprocating mode in response to pressure pulses in the drilling fluid caused by rapidly opening or closing a valve.

Abstract: An electrodynamic device translates an objective 1 along a path 4 in a radial direction relative to the axis of rotation 2 of an optical disc 3 and comprises a slide 6 on which the objective is arranged and a parallel-guide arrangement along which the slide is movable. It also comprises two stator magnets 7A and 7B, arranged on a stator yoke of a magnetizable material, and two drive coils 8A and 8B which are connected to the slide 6 and which can be translated in the magnetic field of the stator magnets. The slide 6 is movable on two guide rods 8A and 9B of a magnetizable material, which rods provide the parallel guidance of the slide 6 and also serve as parts of the stator yoke, air gaps 12A and 12B being formed between the permanent magnets and the drive coils being arranged around the guide rods.

Abstract: In an apparatus which is driven by an electric motor, for example, a dry-shaving apparatus or the like, which consists of a basic appliance on which a structural unit equipped with a tool can be placed and which comprises an appliance element which performs a reciprocatory oscillating movement, which element is movably guided in the direction of the oscillating movement by means of springs, the springs are also used for cooperation with catches by means of which the structural unit is detachably secured to the basic appliance.

Abstract: A linear induction motor includes one ferromagnetic member thereof which is movably resiliently mounted in the motor frame so as to move toward the stator in the motor whenever current is applied thereto. A portion of the armature in the motor extends between the resiliently movable member and the motor frame. When the motor is energized the armature is free to move between the ferromagnetic member and stator. When the motor is de-energized, the resiliently movable member is biased toward the motor frame and sandwiches the armature between the member and the frame so as to prevent the movement thereof. Reactivating the motor then attracts the movable member toward the stator and frees the armature.

Abstract: The present invention refers to a device for stepwise displacement of a work-piece or a similar body, the device comprising a rod made from a reversibly expanding or compressing material coupled to an activation device whereby the rod has its ends resting in clamping brackets to be clamped alternatively at the expansion or compressing of the rod.

Abstract: A permanent magnet armature is reciprocated between electromagnetic coil assemblies in a motor chamber that is evacuated and maintained at a cryogenic temperature by circulation of a cryogenic cooling medium through pressure sealed, coil enclosing spaces of the coil assemblies. Shock absorbers absorb the thrust applied by the armature to the coil assemblies at the ends of its stroke. The armature drives pumps for transmitting motive energy externally of an insulated enclosure within which the power plant is housed.

Abstract: A vibratory feeder system includes a track having a linear, circular or helical configuration upon which articles that are to be transported are positioned. The vibratory feeder system further includes a support structure for supporting the track. The track and support structure are joined by resilient members of a configuration and dimension such that the track may move in a generally linear, reciprocative path relative to the support structure. The vibratory feeder further includes one or more self-contained, inertial drive elements wherein each drive element includes a rigid, nonmagnetic, cylindrical housing having end covers. Two iron stator cores are rigidly mounted within the housing and to the interior of one end cover thereof. Two resilient members having mounted at one end thereof a reciprocating armature are secured to the one end of the housing. A laminated iron armature core positioned so as to be spaced from the stator cores by an air gap is mounted on the armature.

Abstract: A magnetic motor wherein a piston mounted magnet is reciprocated through a predetermined stroke in timed relation to polarity reversal of a pair of electro-magnetic assemblies at opposite axial ends of the piston cylinder. Polarity reversal and the intensity of the magnetic field is varied as a function of piston movement through a distributor to control the output of the motor. Hysteresis and flux leakage is reduced by an arrangement of permanent magnets and magnetic spheroids associated with one of the electro-magnetic assemblies.

Abstract: A moving-iron, linear-motor compressor suitable for use in a refrigerant system, wherein a conical armature reciprocates in a complementary air-gap under the influence of an electromagnetic circuit and a pair of linear (constant rate) complementary return springs connected to the armature between the compressor piston and an outboard bearing. The armature rod is made of magnetically permeable material. The electromagnetic circuit includes a pair of abutting convoluted loops of spirally wound magnetic strip material with a conical air-gap fabricated in the area of abutment. The motor has a layered construction which cooperates with the conical armature and air-gap such that the motor is self-aligning at the assembly stage.