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| Number | Title | Issue Date |
| 7417387 | Device for generating a motive force A device for generating a motive force includes a tubular housing, a driving member, and a magnetic unit. The driving member is movably disposed in the tubular housing and includes a magnet. The magnetic unit includes first and second magnets, each of which covers a... | 08/26/2008 |
| 7414374 | Continuously variable frequency swinging armature motor and drive Disclosed herein is a power device. The power device has a power source; timing circuitry powered by the power source for producing a current pulse output having a pulse width; a switch for triggering the current pulse output produced by the timing circuitry; an arm... | 08/19/2008 |
| 7385362 | Method for driving a vibrating device for a portable object that comprises a coil and a moving mass The drive method consists in setting in vibration a moving mass of a vibrating device for a portable object using a series of voltage pulses provided to the coil of the vibrating device, which is electro-magnetically coupled to the moving mass. In a phase of driving... | 06/10/2008 |
| 7298101 | Continuously variable frequency swinging armature motor and drive Disclosed herein is a power device. The power device has a power source; timing circuitry powered by the power source for producing a current pulse output having a pulse width; a switch for triggering the current pulse output produced by the timing circuitry; an arm... | 11/20/2007 |
| 7239099 | Circuit configuration and method for controlling an electric motor, in particular of a washing machine A circuit configuration for driving an electric motor, in particular of a washing machine, includes power switches connected to connection terminals of the electric motor and to a voltage intermediate circuit. A driver circuit is connected to the voltage intermediat... | 07/03/2007 |
| 7057871 | Actuation circuit for an electromagnetic actuator The actuation circuit for an actuator (10) includes an energy store (11) arranged near the actuator (10). The energy store (11) is configured such that it instantaneously discharges in response to a trigger signal, wherein the discharge c... | 06/06/2006 |
| 6977474 | Control system for a linear vibration motor A motor driving apparatus for driving a linear vibration motor includes an order output determining unit for determining a motor output which is required of the linear vibration motor, and a driving frequency determining unit for determining a driving frequency of t... | 12/20/2005 |
| 6608455 | Driving apparatus for vibration type motor and vibration type motor driving control method A driving apparatus is provided for a vibration type motor which obtains a driving force by applying a periodic signal to an electro-mechanical energy conversion element portion of the vibration type motor. When the driven amount of the vibration type mot... | 08/19/2003 |
| 6538402 | Self-oscillation system for driving a linear oscillatory actuator around its resonant frequency An improved self-oscillation system for a linear oscillatory actuator composed of a stator and a reciprocator. The stator carries a winding to which an electric current is periodically supplied for making a resonant oscillation of the reciprocator. The sy... | 03/25/2003 |
| 6201362 | Electromagnetic hammer with mobile ferromagnetic weight An electromagnetic hammer having a ferromagnetic moving mass, the hammer comprising both a tube (1) designed to rest via an anvil on an element to be hammered (50), carrying a peripheral coil (2), and slidably receiving the mass (14) inside itself, and el... | 03/13/2001 |
| 6181090 | Drive control method for linear oscillating motors and a linear oscillating motor A method for driving a linear oscillating motor and a linear oscillating motor are provided. The motor includes a fixed magnetic member, a movable member having a magnet and being supported to oscillate relative to the fixed magnetic member, a detector th... | 01/30/2001 |
| 6140802 | Automatic power adjustment system for introductory use of a vibrating device on a human body Driving power for a vibrating device is provided at less than full level when the device is initially used. Power is gradually increased in successive steps after a selected number of uses in each step until full power is achieved. Also, a battery-energiz... | 10/31/2000 |
| 5994855 | Automatic power adjustment system for introductory use of a vibrating device on a human body Driving power for a vibrating device is provided at less than full level when the device is initially used. Power is gradually increased in successive steps after a selected number of uses in each step until full power is achieved. Also, a battery-energiz... | 11/30/1999 |
| 5838127 | Single phase motor for laundering apparatus A motor system having a stationary assembly including a winding and a rotatable assembly in magnetic coupling relation to the stationary assembly. A power supply link having upper and lower rails supplied by a power supply provides power to the motor wind... | 11/17/1998 |
| 5796223 | Method and apparatus for high-speed driving of electromagnetic load An apparatus for driving an electromagnetic load by applying a high voltage at the initial driving stage and thereafter applying a constant hold current is provided with a switch for supplying high-voltage energy to the electromagnetic load from a capacit... | 08/18/1998 |
| 5483131 | Self-starting swinging apparatus A self-starting swinging apparatus including a free-running oscillation circuit comprising two transistors which are a PNP transistor and an NPN transistor, the bases of both transistors being connected respectively to the collector of one transistor dire... | 01/09/1996 |
| 5189355 | Interactive rotary controller system with tactile feedback An apparatus for controlling conditions in response to an operator input, the apparatus including a rotary knob coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, with each winding being center tap... | 02/23/1993 |
| 5130616 | Motor control system and components thereof A motor control system includes a single, multicompartment enclosure mounted on a skid. The enclosure contains a transformer circuit and a motor controller circuit interconnected so that only external connections to a power source and a load are heeded. W... | 07/14/1992 |
| 5130618 | Electrical drive circuits A drive circuit including a power stage [PSH/PSV] and a control stage therefor to co-operate to supply energy in a controlled manner with regard to a reference value to an inductive load when connected in operation, means [R21, R41/R25, R42] in the power ... | 07/14/1992 |
| 5087868 | Rotary actuator A rotary actuator is designed for rotatingly drive a rotary body, such as a rotary valve member for adjusting damping force to be created by a variable damping force shock absorber. The rotary actuator takes a layout of a permanent magnet and an electroma... | 02/11/1992 |
| 4564791 | Operators for sliding gates Operators for sliding gates including a solenoid-operated detent for engaging a gear of the gate drive motor shaft speed reducer and locking the associated gate, and a key-operated cam for disengaging the detent from the gear.... | 01/14/1986 |
| 4468594 | Electromagnetic percussion implement A two-directional percussion implement selectively adaptable both for driving in and for extracting, e.g. piles, from the ground, includes two coaxial electromagnetic coils whose movable armatures are represented by extremities of a reciprocable ram. Oppo... | 08/28/1984 |
| 4162858 | Stylus printer impact energy control In a magnetically operated matrix printer a circuit makes a decision when a magnet is actuated. The decision is whether or not the relevant magnet has already been actuated during the printing of the previous column of the matrix character being printed. ... | 07/31/1979 |
| 4009565 | Time measuring device having a periodic signal generator A time measuring device and an oscillator assembly for generating a periodic signal having a predetermined frequency output is disclosed. The time measuring device may be in the form of a watch, clock or other form of timekeeping device. The oscillator as... | 03/01/1977 |
