Karl I. Tamai

US Patent 7245056 Axial fan motor and cooling unit

US Patent 7365470 Brush holder assemblies including brush holders with handles

US Patent 7385331 Stator for electric machines

US Patent 7388315 Film-like electrode member with local thick section for assembling and positioning purposes, and electrostatic motor having the same

US Patent 7394179 Alternator having a slip-ring cover connected to brush holder

US Patent 7400069 Generator having reciprocating and rotating permanent motor magnets

US Patent 7400077 Electric motor having multiple armatures

US Patent 7402925 Stator for an electric motor having a temperature monitor

US Patent 7405506 Driving mechanism and micro-mirror device provided with the same

US Patent 7408279 Permanent magnet synchronous motor including permanent magnet with tapered outer edges

US Patent 7408283 Micromachined ultrasonic transducer cells having compliant support structure

US Patent 7411329 Permanent magnet synchronous motor including permanent magnet with tapered outer edges and rotor core with opening

US Patent 7417345 Fan assembly with magnetic thrust bearings

US Patent 7423356 Thermally-conductive stator support structure

US Patent 7432622 Method for the wireless and contactless transport of energy and data, and corresponding device

US Patent 7436091 Method and system of limiting arcing of rotating member

US Patent 7439645 Stator arrangement of a rotary electric machine having lead wires in sagging contact with the stator winding

US Patent 7443067 Pump-motor assembly lead protector and assembly method

US Patent 7453183 Rotational actuator of motor based on carbon nanotubes

US Patent 7456533 Motor and electric apparatus equipped with a conductive pin for suppressing electrolytic corrosion

US Patent 7456535 Thrust member attached to outer surface of motor body, and motor including same

US Patent 7456543 Closely spaced electrodes with a uniform gap

US Patent 7459821 Permanent magnet assisted synRM and method for imposing magnetic force thereon

US Patent 7459822 Rotating electric machine having switched or variable reluctance with flux transverse to the axis of rotation

US Patent 7462969 Electromagnetic actuator with external coils

US Patent 7468571 Electrostatically driven latchable actuator system

US Patent 7468572 Versatile digitally controlled micro-mechanical actuator

US Patent 7482728 Electrostatic actuator including a switching circuit which selectively sets one of a moving mode and first and second holding modes and driving method therefor

US Patent 7489055 Linear motor and linear compressor using the same

US Patent 7492067 Stator for outer rotor multipole generator and method of assembling the stator

US Patent 7495364 Cryogenic pumping systems, rotors and methods for pumping cryogenic fluids

US Patent 7498714 Multi-layer three-dimensional structures having features smaller than a minimum feature size associated with the formation of individual layers

US Patent 7504755 Rotor of synchronous induction motor and compressor

US Patent 7504757 Multi-finger z-actuator

US Patent 7508100 Electric motor/generator and method of cooling an electromechanical transmission

US Patent 7508102 Brushless motor having a circuit board having a central hole and escape holes

US Patent 7508111 Biaxial actuators with comb electrodes having separated vertical positions

US Patent 7514836 Insulated carbon brush guide

US Patent 7518278 High strength undiffused brushless machine and method

US Patent 7518283 Nanometer-scale electrostatic and electromagnetic motors and generators

US Patent 7521826 Power tools with switched reluctance motor

US Patent 7521836 Electrostatic actuator with fault tolerant electrode structure

US Patent 7525224 Drive unit and inverter with cooling technique

US Patent 7538460 Integrated resolver for high pole count motors

US Patent 7538471 Microactuator having increased rigidity with reduced mass

US Patent 7545070 Commutator motor having a number of field winding groups

US Patent 7547998 Aligning apparatus including an attraction preventing plate provided between permanent magnet and magnetic member

US Patent 7548011 Systems and methods for improved control of micro-electrical-mechanical system (MEMS) electrostatic actuator

US Patent 7550892 High slot utilization systems for electric machines

US Patent 7550895 Method for driving micro-oscillating element having comb-teeth electrodes

US Patent 7554225 Electric motor with a coil arrangement for providing oscillatory linear and rotational movement

US Patent 7557470 6-axis electromagnetically-actuated meso-scale nanopositioner

US Patent 7557487 Methods and apparatus for thermal isolation for thermoelectric devices

US Patent 7579746 Actuator with Alternating Steady Voltage Combs and Variable Voltage Combs

US Patent 7582992 Electrical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same

US Patent 7583001 Electric motor design for in hub motors

US Patent 7586225 Hybrid transmission motor module with integral wire connections

US Patent 7589441 Circumferentially wound cooling tube structure for cooling a stator

US Patent 7589445 Linear actuator comprising a brushless polyphase electric motor

US Patent 7598651 Mechanical meta-materials

US Patent 7598652 Mechanical meta-materials

US Patent 7605513 Electric tool having electric motor with first and second coils having first and second coil bundles of different innermost peripheral length

US Patent 7608970 Brush holder assemblies with removable rotatable handles and methods of replacing brush holders

US Patent 7615894 Electric motor with a permanent magnet carrier rotating a sprocket

US Patent 7629725 Micromechanical actuator with asymmetrically shaped electrodes

US Patent RE41035 Magnetic bearing device with vibration restraining function, magnetic bearing device with vibration estimating function, and pump device with the magnetic bearing devices mounted thereto

US Patent 7635939 Microactuator with displacement sensing function and deformable mirror including the microactuator

US Patent 7646121 Bobbin-less stepping motor and electronic apparatus

US Patent 7649301 Actuator capable of driving with large rotational angle or large deflection angle

US Patent 7663271 Actuator with hit prevention mechanism

US Patent 7663289 Centipede actuator motion stage

US Patent 7675204 Motor for controlling inverse rotation of rotor

US Patent 7679257 Planar commutator, rotor and direct current electric motor

US Patent 7696660 Stator for rotary electric machine

US Patent 7701105 Cryogenic pumping systems, rotors, and methods for pumping cryogenic fluids

US Patent 7701155 Method for driving micro-oscillating element having comb-teeth electrodes

US Patent 7705510 Strip-type segment and laminated stator core for an electrical machine

US Patent 7705514 Bi-directional actuator utilizing both attractive and repulsive electrostatic forces

US Patent 7709995 Shape memory alloy wire latch actuator

US Patent 7719153 Permanent magnet machine and method with reluctance poles and non-identical PM poles for high density operation

US Patent 7719162 Electrostatic actuator and controller with PWM driving

US Patent 7719163 Actuator having fixed and movable comb electrodes

US Patent 7723896 Driving mechanism using shape memory alloys including a magnetic latch

US Patent 7728475 Thermally operated rotatable component restraint system

US Patent 7728477 Dual purpose permanent magnet exciter

US Patent 7741751 MEMS device having distance stops

US Patent 7759829 Industrial motor assembly comprising a vented rotor shaft

US Patent 7768176 Power storage system with low voltage and high voltage windings for a vehicle driving system

US Patent 7777371 Linear drive apparatus having cores and coils which are positioned on opposite sides of the cores

US Patent 7777379 Systems and apparatus for reducing damages to an electric machine

US Patent 7777392 Contoured thermomechanical actuators and pulsing for enhanced dynamic performance

US Patent 7781935 Energy conversion system with variable airgap distance and energy recovery method

US Patent 7795778 Electrostatic actuator driving system having plural actuators and a temperature detector

US Patent 7800278 Energy harvesting by means of thermo-mechanical device utilizing bistable ferromagnets

US Patent 7804207 Positioning apparatus, exposure apparatus, and device manufacturing method using repulsion force generation

US Patent 7804213 Low profile d.c. brushless motor for an impeller mechanism or the like

US Patent 7808150 Actuator having deflected fixed comb electrodes and movable comb electrodes

US Patent 7821178 Brush and brush housing arrangement to mitigate hydrodynamic brush lift in fluid-immersed electric motors

US Patent 7830062 Motor having round and angular coils

US Patent 7834494 Fault-tolerant electromechanical actuator having a torque sensing control system

US Patent 7834513 Electrostatic generator/motor having rotors of varying thickness and a central stator electrically connected together into two groups

US Patent 7847465 Stator with winding formed of a series of segments for electric rotating machine

US Patent 7859154 Thermally operated rotatable component restraint system

US Patent 7859156 Hard magnetic object and method for adjusting the direction and position of a magnetic vector

US Patent 7859167 Micro actuator having tilt and vertical displacement and device having such micro actuator

US Patent 7863783 Brushless type of vehicular AC generator

US Patent 7868514 Plural rotor permanent magnet electric motor with coincident electromagnetic axis

US Patent 7868516 Electrostatic actuator having electrodes with deformation patterns having larger pitches from the center

US Patent 7872394 MEMS device with two axes comb drive actuators

US Patent 7872395 Actuator with symmetric positioning

US Patent 7876008 Fan and motor having multiple insulators with an axially protruding conductor pin

US Patent 7876014 Permanent magnet rotor with increased magnetic flux

US Patent 7876019 Electrical devices with reduced flux leakage using permanent magnet components

US Patent 7880353 Spindle motor having holding magnet preventing oil discharge

US Patent 7880355 Electromagnetic variable transmission

US Patent 7880365 Actuator capable of driving with large rotational angle or large deflection angle

US Patent 7888836 DC motor with improved wiring connections

US Patent 7888839 Commercial low cost, high efficiency motor-generator

US Patent 7893575 Rotor with field coils in optimized flux space slots

US Patent 7893582 Hollow motor drive device with an offset magnet, shaft, and nut

US Patent 7893595 Method for gap adjustment of two mechanical elements of a substantially planar micromechanical structure and corresponding electromechanical resonator

US Patent 7898120 Linear-rotary actuators and actuator systems

US Patent 7898144 Multi-step microactuator providing multi-step displacement to a controlled object

US Patent 7919893 Permanent magnet rotor with annular rib coupling

US Patent 7919901 Low-voltage, large displacement stepping actuator and method for fabricating the same

US Patent 7923884 Rotary electric machine having stator coil with U-shaped segment

US Patent 7923894 Actuator, image projection apparatus and production method for actuator

US Patent 7928619 Gap winding motor

US Patent 7928630 Monolithic thermionic converter

US Patent 7928631 Stable electro-mechanical comb drive actuators

US Patent 7932646 Exposure apparatus with a stage, driving unit,and force applying unit having a separate magnetic shield

US Patent 7936097 Electromagnetic propulsion system

US Patent 7944095 Linear motor with integrally formed stator

US Patent 7948136 Permanent magnet motor with magnets in an adjusted position to reduce cogging torque

US Patent 7960875 Vibration generator

US Patent 7969051 Forced-fluid flow ventilating system for rotating electrical machines and rotating electrical machine comprising same

US Patent 7969062 Energy converting apparatus, generator and heat pump provided therewith and method of production thereof

US Patent 7977832 Cooling system for a motor and associated electronics

US Patent 7982361 Actuator using comb-tooth

US Patent 7994661 Dual linear electrodynamic system and method

US Patent 8008816 Device with magnetoplastic and/or magnetoelastic thin-film transducer and pick-up coil for harvesting energy