Abstract: A micro-delivery device includes a substrate having an upper surface; a shell disposed on the upper surface of the substrate and defining a chamber between the shell and the substrate; a planar electrode disposed on the upper surface of the substrate; a separator disposed in the chamber and dividing the chamber into an upper reservoir and a lower reservoir; and a cannula inserted in an opening of the rigid shell and in fluid communication with the upper reservoir.

Abstract: A method of controlling a fluid pump. The pump has a plurality of oscillating pistons that travel along a central axis of a piston sleeve. A plurality of pistons is of similar mass within a piston sleeve are provided, and adjacent pistons are positioned to be 180 degrees apart in phase oscillations. An electric coil is provided for each piston, and the position of adjacent pistons is determined. The current to one of the electric coils for a piston is adjusted to maintain the 180 degree difference in phase between oscillations of adjacent pistons.

Abstract: The present invention utilizes a contact vibrating technique to generate Direct Current electricity from a battery and coils. The present invention utilizes BEMF (Back Electro Motive Force) to recharge the battery that runs the device. No external charge is ever required to maintain the battery. The present invention utilizes three cycles of operation. The first cycle provides power into the primary coil. The second cycle opens contacts allowing the primary coil to generate BEMF oscillations. Both the positive and negative BEMF pulses from the primary are collected and stored in capacitors. The positive pulses are stored in a smaller capacitor. Also during the second cycle, the secondary coils and associated circuitry collect both the positive and negative pulses from the etheric oscillations, which occur due to the BEMF ringing of the primary magnetic field returning to the zero state.

Abstract: Method for transforming energy in a reciprocating electric machine, particularly a motor or generator. An electrically operated linear movable piston oscillates between two springs. The energy in the springs is at least five times larger than the energy transferred between the piston and the electrical system for each cycle of the machine. A reciprocating electric machine comprises a linear movable piston 15, which is arranged in a tubular cylinder 11 to operate as a working element. It is provided with magnetic elements, which establish an outwardly directed electrical field of force, which is effective towards a surrounding row of tubular, coils 22. At each end of the cylinder 11 is formed a spring which forms a resonance-effective arrangement. The interaction between the magnetic fields of the coils 22 and the magnetic elements 16, respectively, obtain energy transmission between the coils and the piston 15.

Abstract: An actuator is provided in which one or more separate compensating coils are employed to alter the distribution of the magnetic flux density in the air gap to produce a substantially constant force throughout the stroke; and in which current in the separate compensating coils can be adjusted with the stroke using separate power supplies and position feedback.

Abstract: An electromechanical actuator has at least one electromagnet, an armature and a resetting device. A connector is provided, with at least one contact element, which is electro-conductively connected to the coil of the electromagnet, and which is disposed in such a way that, at least during the assembly to the actuator onto a support, it can be electrically contacted by an assembly contacting element.

Abstract: A servo device for radio control is provided, capable of fine-adjusting a linkage rod, which links the servo device and an operation unit, in an accurate positional relationship. The servo device includes a servo motor having a servo output shaft on which a serration is formed, and a servo horn having a shaft bore opened at the lower side thereof, the shaft bore having an inner wall on which an inner serration to be engaged to the servo output shaft is formed. The servo horn has a servo horn base from which the horn output shaft protrudes, the horn output shaft being above and coaxially to the shaft bore, an operation unit having a shaft bore to which the horn output shaft is engaged, and an angular adjustment mechanism for linking the shaft bore of the operation unit to the horn output shaft so as to movably fix circumferentially and at an arbitrary angle.

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 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 control system for a scanning motor that may operate at constant power, which has a control circuit including an H-Bridge connected across the drive coil of the motor. The control circuit operates under microprocessor control for digitally generating selected high current and a low current thresholds, which can be changed to enable the scanning motor to be operative over a large range (e.g. 3.3 v to 8 v) of supply voltage and to control the arc over which the motor oscillates and, therefore, the scan angle of an optical beam which scans a bar code. The control circuit turns the current to the drive coil on and off when the high and low thresholds are reached thereby varying the current which the motor draws which determines the scan angle and scan rate and average current draw, which may be maintained constant for constant power consumption.

Abstract: A completely sealed magnetically driven pump having a piston armature driven by electrical windings. Unique electrical driving circuits are provided for the pump embodying feedback windings magnetically coupled with the driving windings of the pump for controlling the reciprocation. The drive circuits are such as to facilitate driving rates, embodying particularly solid state bistable flip-flop components adaptable to be embodied in or associated with computers or other low power logic devices.