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| Number | Title | Issue Date |
| 7973435 | Electrical linear drive An electrical linear drive device comprises an outer housing consisting of a housing tube and two housing covers disposed at the ends thereof The outer housing defines in the interior thereof a receiving space, into which the drive part of a drive unit in the form o... | 07/05/2011 |
| 7855478 | Machine for generating reciprocal motion and related method A machine for generating reciprocal motion includes a first magnet rotatable about a first magnet axis, a second magnet spaced apart from the first magnet and rotatable about a second magnet axis, and a third magnet arranged between the first and second magnets and ... | 12/21/2010 |
| 7768161 | Method and device for moving an element to be driven using an actuating element formed by etching in a semiconductor material A device comprising an element to be driven and a driving element designed to be urged into engagement with the element to be driven and an actuating element adapted to generate a reciprocating movement to move the driving element, the driving element and the actuat... | 08/03/2010 |
| 7557473 | Electromagnetic reciprocating engine An electromagnetic engine comprises an electromagnet having opposing magnetic poles at ends thereof. A non-magnetic rigid support is mounted for oscillatory stroke movement relative to the electromagnet. A crankshaft is coupled to the support; a sensor is coupled to... | 07/07/2009 |
| 7471020 | Linear actuator A linear actuator, preferably for sickbeds and beds for domestic use, comprises a reversible electric motor (2) which, via a reduction gear, drives a spindle (4) with a nut (5) secured against rotation so that an activating element (6) co... | 12/30/2008 |
| 7443060 | Acoustic compressor with two resonators A resonator of an acoustic compressor is provided at each side of an actuator so that the two resonators are arranged side by side. Two pistons are provided at the inner ends of the resonators and actuated by the actuator. At the outer end of the each of the resonat... | 10/28/2008 |
| 7440689 | Electromagnetically actuated adjusting apparatus for lens An electromagnetically actuated adjusting apparatus for lens is disclosed. The adjusting apparatus comprises a body capable of furnishing a lens inside, at least one permanent magnet, a first magnetic conductor and a second magnetic conductor. The first and the seco... | 10/21/2008 |
| 7436090 | Direct drive hybrid rotary motor A rotary motor shaft extends through a rheological brake unit through which variable braking resistance to rotation of the motor shaft is applied while it undergoes rotation in response to torque mechanically applied thereto in sequence through a peripheral gear by ... | 10/14/2008 |
| 7411320 | Radially-activated engine A motor includes a plurality of linearly activated pistons, positioned radially around an axis, which are selectively and sequentially biased against on offset element to produce rotation of a rotatable element about the axis. The motor further includes an power sou... | 08/12/2008 |
| 7400069 | Generator having reciprocating and rotating permanent motor magnets A generator for producing electric power includes a drive mechanism, such as a drive motor, having a rotor supported for rotation about an axis. A first generator magnet driveable by the rotor includes a reference pole facing in a first direction. A second generator... | 07/15/2008 |
| 7330094 | Energy producing apparatus utilizing magnetic pistons An energy producing apparatus utilizing magnetic pistons is provided. Permanent magnets of like polarity are employed within a cylinder of each piston and upon a top portion of said piston. The like polarity pistons have a natural desire to repel one another. A ferr... | 02/12/2008 |
| 7315098 | Linear oscillator and electrically driven toothbrush A linear oscillator and an electric toothbrush capable of emitting a low noise and of being assembled compact are provided. The linear oscillator, which reciprocates a shaft in an axial direction thereof, includes a plunger movable together with the shaft in the axi... | 01/01/2008 |
| 7312541 | Actuator and bonding apparatus In an actuator of a bonding apparatus, a rotating body 16 that has a bonding head is rotatably supported on a supporting carrier having the same shape as magnetic path members 32L and 32R, and coil portions 40 and 42 are disposed o... | 12/25/2007 |
| 7268449 | Linear actuator having mechanism for stopping linear movement of output shaft without touching rotor A stopper member is included in a linear actuator comprising a stator assembly, a rotor assembly, an output shaft, and a stopper pin which is fixedly disposed at a frontward portion of the output shaft, and which is adapted to axially control the mode and amount of ... | 09/11/2007 |
| 7262525 | Rotor and motor having the same A rotor of a motor includes a cylindrical rotor shaft that is formed through plastic working. The shaft includes a positioning portion that is formed in an inner peripheral surface of the cylindrical shaft by the plastic working of the shaft. The positioning portion... | 08/28/2007 |
| 7239050 | Uniaxial drive unit and surface shape measuring apparatus using the same There is provided a uniaxial drive unit using a linear motor having a fixed part which is a rod-shaped magnet fixed to a unit body and formed so that the N poles and the S poles are arranged alternately; and a moving part which is a ring-shaped member having a coil ... | 07/03/2007 |
| 7239052 | Magnetic actuators A magnetic actuator. A yoke includes a first opening and a second opening, a frame, and a path. A first magnet is disposed in the first opening in the vicinity of the frame. A second magnet is disposed in the second opening in the vicinity of the frame. A coil compr... | 07/03/2007 |
| 7218022 | Linear actuator A linear actuator for displacing a member or a set of movable members, having an electric stepping motor (7) with a rotor having a portion in the form of a nut (9), and a linear-movement screw (12) engaging the nut portion of the rotor. The scre... | 05/15/2007 |
| 7201064 | Panel bending machine A panel testing device, and a method of its use, for flexing and measuring mechanical properties of a panel are provided comprising a panel bending assembly operable to engage a panel and impart a bending force on the engaged panel, and a linear actuator having an o... | 04/10/2007 |
| 7199494 | Electric linear actuator The invention proposes an electric linear actuator with a take-off element (12) that is adjustably supported on a main housing (5) and is connected to and driven by an electric motor (14) via a spindle drive (8). This connection is realiz... | 04/03/2007 |
| 7185943 | Two piece sliding window panel having lead screw power unit A sliding window panel assembly for a motor vehicle. The assembly includes a stationary window panel having an opening formed therein, at least one guide rail coupled to the stationary window panel below the opening and above a bottom edge of the stationary window p... | 03/06/2007 |
| 7151332 | Motor having reciprocating and rotating permanent magnets A motor includes a rotor supported for rotation about an axis, at least one pair of rotor magnets spaced angularly about the axis and supported on the rotor, at least one reciprocating magnet, and an actuator for moving the reciprocating magnet cyclically toward and... | 12/19/2006 |
| 7141897 | Electric actuator expanded with sensor and electronic brake An electric actuator that is capable of driving a motor in a cylindrical structure, such that the electric actuator itself can be expanded. The electric actuator includes: a motor for driving the electric actuator and a screw cylinder for connecting a shaft of the m... | 11/28/2006 |
| 7124657 | Electric actuator and method of assembling the same An electric actuator comprises an actuator body which is a rectangular tube have having two pairs of opposing surfaces disposed in parallel and which has a slit formed to extend by a predetermined length along an edge of the rectangular tube; a slider which reciproc... | 10/24/2006 |
| 7066041 | Linear actuator A linear actuator useful for adjusting furniture includes a housing (1) with a reversible electric-motor (2) which, via a transmission (11, 13), drives a spindle (4) with a force absorbing bearing (16). On the spindle there is a nu... | 06/27/2006 |
| 7021603 | Electromagnetic actuator and integrated actuator and fluid flow control valve A magnetic device is formed from a permanent magnet generating magnetic flux, an armature which can occupy two positions between four poles and an electromagnet winding to which current can be supplied to produce a magnetic flux in one direction or the other, the fl... | 04/04/2006 |
| 7009315 | Apparatus for converting vibration energy into electric power An apparatus for converting vibration energy into electric power is provided, in which vibration of a power source is transmitted to a power-generating coil 14, and is then transmitted to an iron core 20 via helical compression springs 26 and | 03/07/2006 |
| 7002274 | Rotary electric machine and automobile provided with the same In a rotary electric machine capable of improving the reliability of an object provided with the same, a permanent magnet type synchronous rotary electric machine comprises has a stator provided with windings. A rotor arranged supported for rotation in the stator wi... | 02/21/2006 |
| 6975055 | Dynamo-electric machine having a rotor with first and second axially or rotationally displaceable field magnets A dynamo-electric machine has a stator with a primary winding and a rotor with a field magnet and a shaft. the field magnet includes a first field magnet having diferent polarity magnetic poles sequentially arranged in a rotation direction and a second field magnet ... | 12/13/2005 |
| 6962015 | Sound actuated display device incorporating vibratory-rotary motion converter A sound actuated display device incorporating a vibratory-rotary motion converter to convert vibrations resulting from sounds and music to rotary motion. The rotary motion causes display elements to move and pulse in a manner synchronized to the rhythms of the sound... | 11/08/2005 |
| 6960114 | Pad conditioner of CMP equipment A pad conditioner of wafer planarization equipment includes a linear driving device for moving a disk holder up and down using a magnetic force. The linear driving device has an electromagnet, a permanent magnet, and a controller. The controller controls the power s... | 11/01/2005 |
| 6909215 | Electric motor An electric motor comprising a shaft 300 on which is mounted n motor modules (where n is an integer). Each motor module consists of two generally disc-shaped rotors 302 having a coil 304 sandwiched between them. Each rotor/coil module is separat... | 06/21/2005 |
| 6909223 | Rotation/displacement converting actuator A rotation/displacement converting actuator has an actuator unit constituted by a displacing body and an actuator in which the displacing body can be linearly displaced. The actuator has a pair of plate-shaped bases, a rotor, a vibrating element that rotates the rot... | 06/21/2005 |
| 6879065 | Linear actuator An improved linear actuator incorporates a DC motor whose stator is secured to a frame is provided for. To improve operational longevity and reliability of a linear actuator, the improved actuator includes a retention clutch and an axial load limiter. An axially con... | 04/12/2005 |
| 6857332 | Linear or rotary actuator An actuator (1) for the linear displacement of a member to be controlled comprising a motor part (2) and an actuating device part (3) including a threaded screw (11) with linear displacement, and a rotary member (9) provided with a... | 02/22/2005 |
| 6806597 | Lead screw type stepping motor To provides a lead screw type stepping motor which is excellent in a response and controllability and can carry out an accurate initial alignment, a rotor (2) is rotatably supported inside of a stator (1) around which an exciting coil (1A) is wo... | 10/19/2004 |
| 6794772 | Rotary motor using electrical linear actuators An electric motor assembly is provided that includes a housing. A rotor is arranged in the housing and is rotatable about an axis. A vehicle wheel is coupled to the rotor. The rotor has an annular profile defining sinusoidal teeth and is generally concentric with th... | 09/21/2004 |
| 6774588 | Controlling apparatus for linear oscillation motor and method for controlling linear oscillation motor A controlling apparatus for controlling a linear oscillation motor includes a sensor and a controller. The motor has a movable element and a stator one of which includes an electromagnet with a winding. The sensor is configured to detect movement of the movable elem... | 08/10/2004 |
| 6756707 | Electric actuator An electric actuator having an in-line rotation shaft, electric motor and encoder in which the encoder shaft, the motor shaft and the rotation shaft is concentric and integrally formed. ... | 06/29/2004 |
| 6734582 | Linear actuator using a rotating motor A linear actuator incorporates a DC motor whose stator is secured to a frame. A shaft is coupled to the rotor of the DC motor one end of which is circumferentially coupled to the inside of a torsion spring and the outer section of the torsion spring is coupled to th... | 05/11/2004 |
