Abstract: A fluid sprayer includes a housing, a pump, a nozzle, a high voltage direct current (HVDC) brushed electric motor that drives the pump, and a motor controller electrically connected to the motor. The motor controller drives the motor with a high speed pulse width modulated (PWM) drive signal that switches current through the motor on and off. The motor controller varies the PWM signal as a function of a spray setting input and sensed current through the motor.

Abstract: A method is described for operating machines (10) having moving parts and arranged jointly on a support (32), said parts being moved periodically with substantially the same frequency, and wherein the phase of an oscillation of one machine (10) in relation to the phase of an oscillation of a further machine (10) is controlled by shifting the phases with respect to one another such that the amplitude of an oscillation of a structural part, for example of the support (32), remains below a predefined maximum value.

Abstract: An electronic apparatus includes: a body unit that houses an electronic circuit; a vibration unit that is provided in the body unit, is configured to vibrate in a predetermined direction, and has a variable frequency of vibration; a plurality of resonators that are each provided in a different portion of the body unit and are each configured to resonate with vibration having a different frequency; and a transmission unit that is configured to transmit vibration of the vibration unit to the plurality of resonators.

Abstract: The present invention replaces the internal combustion engine utilizing a conventional 12 voltage system that is used in automobiles today. The combustion engine can be a 90 degree V-Type or Inline type of cylinder block. This magnetic drive engine of the present invention comprises a head assembly supported by a cylinder engine block. The cylinder block houses the pistons and the head assembly houses a plurality of corresponding plug assemblies. Each plug assembly has an electromagnet on its bottom end which switches polarity based upon the polarity sent by the sensors on the crankshaft. By integrating the mechanics and the electromagnetism needed to push and pull the magnets on the pistons, the plug assembly is a staging area, for the coils and rods (mediums), to initiate the changing of polarity. A computer controls the switching of polarity and voltage needed for top performance.

Abstract: A condensate pump for an HVAC system includes a reservoir, a solenoid pump assembly with a solenoid pump, and a solenoid pump electronic control module for limiting the amount of energy delivered to the solenoid pump during one half cycle from an AC current source. The solenoid pump is mounted in the solenoid pump assembly by means of shock absorbing material, and the solenoid pump assembly is mounted on a support member with shock absorbing material interposed between the solenoid pump assembly and the support member.

Abstract: An apparatus for amplifying a vibratory movement includes a micromechanical device having an interface for fixedly joining it to a vibrating member; a mass mounted to be mobile in at least one degree of freedom relative to the interface; a spring capable of exerting a return force between the mobile mass and the interface; an orientation-detecting member for detecting the orientation of the shift of the interface according to said degree of freedom; and a coupling member for coupling the mobile mass to the interface. The coupling member is configured to couple the mobile mass to the interface when an orientation of shift of the interface is opposite that of the mobile mass and to uncouple the mobile mass from the interface before a change in orientation of the interface and when the orientation of shift of the interface is identical to that of the mobile mass.

Abstract: Various embodiments of the present invention comprise linear-resonant vibration modules that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces. The vibrational forces are produced by linear oscillation of a weight or member, in turn produced by rapidly alternating the polarity of one or more driving electromagnets. Feedback control is used to maintain the vibrational frequency of linear-resonant vibration module at or near the resonant frequency for the linear-resonant vibration module. Linear-resonant vibration modules can be designed to produce vibrational amplitude/frequency combinations throughout a large region of amplitude/frequency space.

Abstract: A fluid delivery system includes a pump operably coupleable to a source of fluid. A reciprocating electromagnetic actuator is coupled to the pump and has a coil that when energized causes the actuator to drive the pump. Coil current sensing circuitry is configured to provide an indication of current flowing in the coil. A controller is coupled to the coil current sensing circuitry and is configured to calculate a coil drive parameter based upon a plurality of coil current indications from the coil current sensing circuitry. Coil drive circuitry is coupled to the controller and is configured to supply current to the coil based on the coil drive parameter.

Abstract: A linear actuator for a motion system is provided with a velocity sensor for monitoring a velocity of an actuation arm that it is driving. The linear actuator comprises a magnetic field, a first coil that is controllably movable within the magnetic field by adjusting a current flowing through the first coil whereby to drive the actuation arm and a second coil that is movable with the first coil and configured such that a voltage is inducible in the second coil that is proportional to its velocity. A controller device is connected to the second coil for receiving feedback indicating the voltage induced in the second coil whereby a velocity of the actuation arm is determinable, wherein the controller device is further connected to the first coil and is operative to adjust the current flowing in the first coil based upon said feedback for controllably driving the actuation arm.

Abstract: A control apparatus and method for controlling an electric rotating machine for vehicle reduces shock at the time of switching power generation mode. The control apparatus include an electric rotating machine functioning as a starter motor and a charging generator 1, an inverter comprised of switching elements 14 to 19, a field current controller 5 for controlling an electric current of a field coil 4 of the electric rotating machine 1, and a controller 24 by which power is generated in an inverter generation mode in a low-speed rotation range and in an alternator generation mode in a high-speed rotation range. A hysteresis is established between a rotating speed in switching from the inverter generation mode to the alternator generation mode and a rotating speed in switching from the alternator generation mode to the inverter generation mode under the control of the controller 24.

Abstract: A thread guide (33) for traversing and guiding a thread (5) in a rotating winding bobbin (1) for producing a cross-wound bobbin in a bobbin winder of a textile machine by controlling vibrations of the thread guide. The thread guide (33) is permanently and directly connected to at least one energy accumulator (20,21) throughout the entire traversing motion. The potential energy of the energy accumulator (20,21) increases continuously after the dead center of the traversing area. A substantially harmonious oscillating mechanical system is thus formed with the thread guide.

Abstract: An apparatus for controlling the tension of a traveling yarn includes a rake tensioner having stationary and displaceable yarn tensioning elements in engagement with the traveling yarn, and an electrical coil to which electrical current is supplied by a regulating device. The displaceable yam tensioning elements and the electrical coil are disposed on a common pivot lever. The electrical coil is pivotable in an air gap through which magnetic field lines pass. The tension of the traveling yarn is controlled as a function of the current supplied to the electrical coil. The present invention, thusly, improves the control of the tension of the traveling yarn in spinning or bobbin winding machines.

Abstract: In a portable device for driving a vibration actuator by means of a battery, a power supply circuit equipped with a boosting circuit for converting a voltage of a built-in battery 1 into a high voltage and a pulse generating circuit for intermittently supplying power to the vibration actuator is provided, and a boosted DC or AC voltage is impressed on the vibration actuator continuously intermittently or discontinuously.

Abstract: A control system for a linear vibration motor capable of eliminating necessity of a separate sensor of detecting the motion of the motor. The linear vibration motor includes a stator provided with a winding, and a vibrator provided with a permanent magnet. The winding is fed with a drive current to generate a magnetic field which interacts with the permanent magnet to cause the vibrator to reciprocate linearly relative to the stator for producing a vibration. The control system includes a controller which detects an ongoing amplitude, i.e., the motion represented by the displacement, speed, or acceleration of the vibrator and provides ON-periods of feeding the driving current to the winding in a varying amount based upon the ongoing amplitude detected in order to keep a vibration amplitude of the vibrator constant.

Abstract: A yarn guide imparts a traversing motion to a yarn being delivered to a rotationally driven takeup bobbin in a textile yarn winding operation to create a cross-wound bobbin, or cheese. The yarn guide includes a fork-like yarn guide pivoted about a pivot axis substantially perpendicular to the axis of the takeup bobbin, and an electromagnetic mechanism for driving the guide. The electromagnetic mechanism includes an air gap, a plurality of magnets disposed along the air gap, a plurality of yokes and at least one electrical coil extending into and moveable along the air gap with the traversing yarn guide. The magnets are disposed along the air gap and generate magnetic field lines which extend in a substantially perpendicular direction through the air gap.

Abstract: A rotor assembly for use within a superconducting electric motor includes a superconducting winding formed of high temperature superconductor and during operation, generates a flux path within the rotor assembly; and a high permeability magnetic material, positioned within at least a portion of the flux path so as to decrease the overall reluctance of the flux path. The rotor assembly may include a support member having an internal volume and formed of a non-magnetic, high-strength resilient material. The support member supports on its outer surface the superconducting winding and within its internal volume, the high permeability magnetic material. The magnetic material may be in the form of a core member to provide the low reluctance portion to the flux path generated by the superconducting winding.

Abstract: A device (1) for converting rotary movement into axial movement has a spindle (8), a spindle nut (5) surrounding the spindle (8), and a plurality of interposed rollers (7). Each of the rollers has a groove profile (72) corresponding to a thread (81) on the spindle (8), and roller grooves (71) corresponding to spindle grooves (51) formed on the interior of the spindle nut (5). The converter device is driven by a drive unit such as an electric motor (4), either via the elements spindle nut (5) and spindle (8) or, with an interposed connection element, via the rolling elements or rollers (7). The converter device has a reset device with a mechanical energy accumulator (21) and an energy delimiter (22). Energy transfer takes place from the electric motor (4) via the energy delimiter (22) to the energy accumulator (21) connected to a casing (3) or vice versa.

Abstract: A supplementary mass is arranged in an electromagnet system between armature and reset spring in such a way that, after reaching an end position, the armature is relieved of the spring force; due to the relief, a high excess of magnetic force is available for braking the subsequent bounce movement; the mass and force conditions of the magnet system are matched so that the subsequent collision of armature and supplementary mass occurs counter-directionally and the remaining kinetic energy of the armature is used up to a large extent by the counter-directional collision; the small bounce movement permits the use of spring systems with very high reset forces when the armature is pulled-in whereby the movement times of the armature are greatly shortened; and specific springs and spring arrangements for producing suitable reset spring force characteristics are described.

Abstract: A dither mechanism comprises a hub (10) arranged to be fixed to a mounting, and a rim (11) coaxial with the hub and to which the ring laser may be attached. A number of radial spokes (12) interconnect the hub (10) and the rim (11), and each has its point of attachment to the rim (11) recessed into the rim in a radial direction. A pair of pegs (32) is associated with at least one spoke and is arranged for insertion into the recesses (15) between the rim and each side of the spoke (12) so as to vary the effective length of the spoke. Drive means (30) are provided for imparting an oscillatory rotational motion to the rim (11) relative to the hub (10) about the axis of the hub.

Abstract: A reciprocating armature motor for electrically driving equipment such as a piston pump for a paint spray gun or a diaphragm compressor characterized by a stator having a solenoid, an armature pivotally mounted at one end to the stator and having a second end acting upon a member of the equipment to be actuated to move the member back and forth along a path when the armature moves relative to the stator with a reciprocating motion and an arrangement for controlling the reciprocating motor of the armature including a coupling link forming a positive link between the armature and a stationary element which coupling link moves depending on the reciprocating motion of the armature. In one embodiment, the coupling link is composed of a pair of pivotally connected arms forming an articulated link which interconnect the armature to the stationary element and coact with a stop to limit the movement of the armature toward the stator.

Abstract: A piezo-electric control device is used to restrain movement of the armature of an electromagnet until the current through the exciter winding of the electromagnet has reached almost the maximum value. This causes the force applied to the armature to be the maximum force from the start of movement, so that the overall time required for movement of the armature from its starting to its end position is substantially decreased. Specifically, the piezo-electric control device is a column of discs having an axis perpendicular to the axis of movement of the armature. When electrical energy is applied to the column it expands in the axial direction causing a locking member mounted on its end to engage a stop member which is part of the armature. The locking member can either push the stop member against a further rigid stop or two columns can be used to clamp the stop member between them.

Abstract: In combination, a water bed frame with side boards, a water filled flotation mattress within the frame, an electromagnetic vibrating transducer unit between a side board and the mattress and operable to generate and transmit motion into the mattress and an adjustable power supply connected with a 60 Hz. domestic power service and delivering current at a fixed frequency and at sub-harmonic frequencies of said fixed frequency to the unit; said unit includes an elongate resilient armature with front and rear end mounting means and fixedly mounting the rear end portion of the armature, an electro-magnetic driver fixedly mounted in predetermined working relationship with the rear end portion of the armature and receiving power from the power supply and a tuning weight on the front end portion of the armature to increase the mass thereof and shiftable longitudinally to tune the natural frequency of the armature into synchronism with the frequency of the power delivered to the driver.

Abstract: An electromagnetic actuator having a plunger core and a stationary ferromagnetic core, both surrounded by an electrical winding, is provided with means for adjusting the axial position of the stationary core in relation to the winding, said means being operable from outside the actuator.