Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8138693 | Vibration isolation control system A computing unit simulates an ideal operation of a vibration excitation actuator by using at least a model operation parameter and the vibration-excitation movable mass data and calculates a parameter corresponding to acceleration/deceleration thrust for moving the ... | 03/20/2012 |
| 8089227 | Electrically operated, continuously adjustable personal hygiene device A toothbrush has a removable end cap at its free end area directed away from the bristles, which end cap closes off an inner space of a grip element. The end cap accommodates an electrical control element, in particular a potentiometer, which can be adjusted via an ... | 01/03/2012 |
| 7977897 | Apparatus and method for controlling or regulating an oscillating deflectable micromechanical element The invention relates to an apparatus and to a method for controlling or regulating the deflection of micromechanically manufactured deflectable elements which, driven electrostatically, are deflected in an oscillating manner. It is the object of the invention to pr... | 07/12/2011 |
| 7960925 | Ultrasonic motor driving method and ultrasonic motor There is provided a method of driving an ultrasonic motor configured so that two alternating voltages having a predetermined difference between respective phases and having predetermined drive frequencies are applied to a laminated piezoelectric body that has drivin... | 06/14/2011 |
| 7880410 | Rotary, limited rotation bi-directional, direct current actuator An actuator (20) comprises a rotor (22); an electromagnetic circuit (24) configured to produce bidirectional torque on the rotor; and, a rotation limitation assembly (26). The rotor (22) comprises a rotor shaft and plural magnets (... | 02/01/2011 |
| 7816873 | Linear compressor The present invention discloses an apparatus and method for controlling a linear compressor which can actively handle load and efficiently perform an operation, by synchronizing an operation frequency with a natural frequency of a movable member varied by the load. ... | 10/19/2010 |
| 7598688 | Tilting device A flat surface tilting device including a selectably positionable flat surface element assembly defining a flat surface element having a flat surface and a pivot location portion, the pivot location portion being generally centered with respect to the flat surface, ... | 10/06/2009 |
| 7592759 | Stepping motor servo driving method and driving mechanism A servo driving method of the present invention to drive a stepping motor driven by a predetermined driving pulse, by a servo control method, is comprising a setting step of setting a driving mode of the stepping motor switchable at least between a first driving mod... | 09/22/2009 |
| 7477026 | Power steering assembly The invention provides for a power steering assembly and method of actuation for assisting a driver in moving the steerable wheels of a vehicle. The power steering assembly includes a housing that defines a chamber. A steering rod is disposed in the chamber and is l... | 01/13/2009 |
| 7474065 | Controlling an electric motor having multiple oscillatory elements A method of controlling an electric motor includes providing an electric motor having a plurality of magnetically driven oscillatory elements having differing oscillatory characteristics, and an electromagnet having a coil arranged to drive all of the oscillatory el... | 01/06/2009 |
| 7459868 | Apparatus for controlling operation of reciprocating compressor and method thereof An apparatus and method are disclosed to control an operation of a reciprocating compressor capable of precisely controlling an operation (stroke) of a reciprocating compressor regardless of a parameter of an internal motor of the reciprocating compressor and a mech... | 12/02/2008 |
| 7456592 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and method for controlling operations of a reciprocating compressor are disclosed. The apparatus includes a compressor control factor detecting unit for detecting a compressor control factor to detect a stroke value corresponding to a point where TDC (T... | 11/25/2008 |
| 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 |
| 7414251 | Method for providing an operable filter system for filtering particles out of a beam of radiation, filter system, apparatus and lithographic apparatus comprising the filter system A method for providing an operable filter system for filtering particles out of a beam of radiation in lithography is disclosed. The method includes providing a slack foil or wire for intercepting the particles, mounting at least a first point or side of the foil or... | 08/19/2008 |
| 7408310 | Apparatus for controlling driving of reciprocating compressor and method thereof Disclosed are an apparatus for controlling a driving of a reciprocating compressor capable of enhancing an efficiency by differently controlling a frequency and a stroke voltage according to a load size and capable of reducing consumption power, and a method thereof... | 08/05/2008 |
| 7405529 | System and method for controlling linear compressor A system for controlling a linear compressor, generates freezing force as a piston reciprocates according to rotation of a motor which receives alternating current power through a triac. The system includes a controller which moves up or delays a trigger signal corr... | 07/29/2008 |
| 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 |
| 7372221 | Device for adjusting the armature stroke in a reversible linear drive unit A device for adjusting the armature stroke in a reversible linear drive unit comprising an excitation coil and an armature displaceable in the magnetic field of the excitation coil according to a linear oscillating motion at a predefined armature stroke. The device ... | 05/13/2008 |
| 7358691 | Vibration device A vibration device comprises a motor having a stator and a rotor each having one or more magnetic elements. A magnetic element on at least one of the rotor and the stator comprises an electromagnet which can be supplied with an electric current so as to interact wit... | 04/15/2008 |
| 7352142 | Apparatus and method for controlling stroke of reciprocating compressor An apparatus for controlling an operation of a reciprocating compressor includes a voltage detecting unit for detecting a positive half-wave voltage of an AC voltage applied to a motor of the reciprocating compressor; a current detecting unit for detecting a positiv... | 04/01/2008 |
| 7350002 | Round-robin bus protocol A low-latency, peer-to-peer TDM bus including one or more data lines and one or more control lines is provided. Attached devices access the bus sequentially in order of their bus addresses. During a device's access period, if the device has data to transmit, the dev... | 03/25/2008 |
| 7345438 | Electromagnetic driver In an electromagnetic driver according to the invention, electromagnetic units are arranged in the axial direction of a shaft, and a power supply change-over device is so formed that, when an attractive magnetic field arises between the coil unit and the magnetic un... | 03/18/2008 |
| 7341432 | Apparatus and method for controlling operation of reciprocating compressor An apparatus and a method for controlling operation of a reciprocating compressor is capable of reducing a stroke estimation error by eliminating an error that occurs due to resistance and inductance of a compressor motor by estimating a stroke with a counter electr... | 03/11/2008 |
| 7317291 | Frequency control circuit, motor drive apparatus, frequency control method, control method of motor drive apparatus, and program allowing computer to execute control method A frequency control circuit including a control circuit for setting a set value, an adding circuit for adding the set value per unit time and effecting counting based on the adding result, and a signal output circuit for outputting an alternating signal of a cycle c... | 01/08/2008 |
| 7307397 | Driving unit A driving unit of the present invention comprises a moving element, an elastic body configured to support the moving element, a permanent magnet fixed on said moving element, an electromagnet disposed to be opposed to said permanent magnet, and a controller. The mov... | 12/11/2007 |
| 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 |
| 7271563 | Apparatus for controlling operation of reciprocating compressor, and method therefor The present invention discloses an apparatus for controlling an operation of a reciprocating compressor and a method therefor which can reduce errors in an operation of a stroke estimated value of the reciprocating compressor, by previously preventing over-saturatio... | 09/18/2007 |
| 7262567 | Actuator driving apparatus An actuator driving apparatus comprises the following. A start signal generator generates a start signal having a frequency substantially equal to the resonance frequency of the movable portion of an actuator. A rock detector detects rock of the movable portion. A d... | 08/28/2007 |
| 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 |
| 7235936 | Linear vibration motor A linear vibration motor comprises: a stator provided with one of a permanent magnet and an electromagnet including a winding; a vibrator provided with the other of the permanent magnet and the electromagnet and supported to be able to vibrate; a movement detection ... | 06/26/2007 |
| 7150606 | Electromagnetic fuel pump An electromagnetic fuel pump, including a pump, an electronic control circuit board assembly (PCB) and electromagnetic coil operatively arranged to operate the pump, and, a housing arranged to house the pump and the PCB/coil assembly, the housing including an integr... | 12/19/2006 |
| 7151348 | Motor driving apparatus A motor driving apparatus for driving a linear vibration motor having a spring member that supports a mover so as to form a spring vibration system including the mover. The motor driving apparatus employs an accurate spring constant of the spring member correspondin... | 12/19/2006 |
| 7131377 | Oscillating mechanism for a distributor roll of a press An oscillating mechanism for a distributor roll of a press has a spatial crank mechanism. ... | 11/07/2006 |
| 7002310 | Piezo-based encoder with magnetic brake for powered window covering The position and speed and, in some embodiments, direction of rotation of a motor for turning the rod of an object such as a window covering is determined by placing a braking magnet next to the motor and a piezoelectric element between the braking magnet and motor.... | 02/21/2006 |
| 6978936 | Method of and system for automatically producing digital images of moving objects, with pixels having a substantially uniform white level independent of the velocities of the moving objects Methods of and systems for illuminating objects using planar laser illumination beams having substantially-planar spatial distribution characteristics that extend through the field of view (FOV) of image formation and detection modules employed in such systems. Each... | 12/27/2005 |
| 6960893 | Driving apparatus of a linear motor A driving apparatus of a linear motor which reciprocally drives a movable element supported by an elastic member, includes an inverter that converts a direct current power into an alternating-current power with a specified frequency to drive the linear motor, a curr... | 11/01/2005 |
| 6946754 | Linear motor and linear compressor A linear motor includes a stator including a stator core for forming plural magnetic poles and a magnetic wire mounted on the stator core, and a mover provided at the interior of the stator and including a mover core and a magnet mounted on the outer side of the mov... | 09/20/2005 |
| 6864647 | Linear motor The present invention provides an improved design of linear motor as well as an improved control strategy. The design allows for a shorted stator, where the armature magnets are controlled to reciprocate to a greater maximum displacement that for a equivalent conven... | 03/08/2005 |
| 6832898 | Driving apparatus of a linear compressor In a driving apparatus of a linear compressor 1 having a power source capable of controlling output current and measuring output electric power, frequency of the linear compressor 1 is controlled such that the amplitude of current which is supplied to ... | 12/21/2004 |
