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| Number | Title | Issue Date |
| 7855477 | Apparatus for preventing displacement of retainer There is provided an apparatus for preventing displacement of a retainer in a rolling guide by making use of the property of the retainer of moving half the distance of a moving object, such as a table. The apparatus for preventing displacement of a retainer in a gu... | 12/21/2010 |
| 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 |
| 7333724 | Camera and piezo ceramic motor therefor A camera has an axially moveable cylinder retaining a lens and a piezo ceramic motor for axially moving the cylinder. The motor has a piezo ceramic drive member that incrementally advances the cylinder in response to the application of an electric potential and a pi... | 02/19/2008 |
| 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 |
| 7239053 | Vibrator motor A vibrator motor has a stationary piece and a moving piece hinged at one end. The moving piece does not generate substantial internal spring forces under the influence of an electromagnetic field, because it does not have a tail bracket. Other parts of conventional ... | 07/03/2007 |
| 7170665 | Optical unit provided with an actuator An optical unit is constructed by superposing and cementing the first substrate having fixed electrodes and the second substrate having a sheet-like member in which a moving plate-spring-like electrode is provided. Concentric through holes are provide at the middles... | 01/30/2007 |
| 7088559 | Integrated interconnect and method of manufacture therefor An integrated interface structure for a nested body to provide an electrical connection. The interface structure includes nested bond pads which electrically interface with leads. The nested bond pads are fabricated on a microstructure to provide an interface to dri... | 08/08/2006 |
| 6987601 | Damped control of a micromechanical device Device and method for a damping function to reduce undesirable mechanical transient responses to control signals. In one aspect of the present invention, the damping function may be used to reduce overshoot and oscillation when a digital micromirror is driven from a... | 01/17/2006 |
| 6780161 | Apparatus for extracorporeal shock wave lithotripter using at least two shock wave pulses The present invention relates to an apparatus for treating a living body or tissue with shock waves originating from at least two sources to a focal area on or within said living body or tissue. The apparatus is particularly for treating an illness or fragmenting st... | 08/24/2004 |
| 6570275 | Motor having two degrees of free motion with a core having inner and outer winding portions A motor having two degrees of free motion includes: a motor casing; a combined core of cylindrical shape having a plurality of inner teeth inside and a plurality of outer teeth outside and fixedly coupled inside the motor casing; a first coil winding woun... | 05/27/2003 |
| 6538799 | Magnetically actuated torsional micro-mechanical mirror system A torsional micro-mechanical mirror system includes a mirror assembly rotatably supported by a torsional mirror support assembly for rotational movement over and within a cavity in a base. The cavity is sized sufficiently to allow unimpeded rotation of th... | 03/25/2003 |
| 6249064 | Magneto-striction microactuator Apparatus and method for providing microactuator positional control in a disc drive having a rotatable disc on which a plurality of tracks are defined and an actuator assembly which supports a head adjacent the tracks. An actuator motor is used to provide... | 06/19/2001 |
| 6066998 | Magnetic actuator with long travel in one direction An actuator made up of a plurality of actuator elements is provided which actuator provides long travel in one dimension and short travel in five additional dimensions, with each actuator element providing long travel in the one dimension and short travel... | 05/23/2000 |
| 5802415 | Dual coil actuator A dual coil actuator comprising a pair of independently moveable electrically conductive coils, is characterized in that a single magnet core generates a single magnetic field, and the coils are positioned around the single magnet core, spaced from each o... | 09/01/1998 |
| 5362213 | Micro-pump and method for production thereof A micro-pump having a cross-sectional area of not more than 5 mm2 and usable as a drive source for the operation of a micro-machine and as the controlled flow of a fluid and a method for the production of this micro-pump are provided. The micro... | 11/08/1994 |
| 5340400 | Linear motor surface coating system Surface treating apparatus employing at least two linear motors driving a multiple linkage system for positioning the outlet of treatment apparatus such as a radiation head or a sprayer for coating objects and especially large objects. A combination of di... | 08/23/1994 |
| 5283682 | Reactionless scanning and positioning system A reactionless scanning and positioning system is disclosed which includes a mirror scanning assembly coupled to a reaction mass having a rotational moment of inertia equal and opposite to that of the mirror assembly, so that the system is effectively rea... | 02/01/1994 |
| 5235225 | Linear electrostatic actuator with means for concatenation Miniaturized linear electrostatic motor comprising a plurality of parallel stators and a flexible rotor disposed between adjacent stators. The stators may be fabricated by depositing a plurality of conductive electrodes on each facing surface of the stato... | 08/10/1993 |
| 5208498 | Linear actuator A linear actuator comprises a shaft made of non-magnetic material for being reciprocatingly moved in an axial direction of the shaft, a plurality of ring-shaped moving cores which are located on the shaft and arranged in the axial direction thereof, and e... | 05/04/1993 |
| 5070263 | Compact dual rotor torque motor for accelerometers A torque motor for rotatably driving a rate sensor (10, 100) which includes a permanent magnet (30) that is magnetically coupled to an upper rotor (18, 106) and a lower rotor (44, 110). At three sites, the upper rotor includes an upper tab (60), which is ... | 12/03/1991 |
| 5023496 | Linear motor A linear motor comprises a first yoke, a second yoke spaced apart the width of a first gap from the first yoke, a current-carrying coil surrounding at least one of the first yoke and the second yoke, a magnet spaced apart the width of a second gap from th... | 06/11/1991 |
| 4814650 | Flat plunger linear electrodynamic machine An electrodynamic motor having a flat plunger core arrangement formed out of alternating layers of magnetic and insulating strips clamped together and maintained on respective bearing sleeves which reciprocate on guide members with the gap between stator ... | 03/21/1989 |
| 4803388 | Linear motor A linear motor comprises a first yoke, a second yoke spaced apart the width of a first gap from the first yoke, a current-carrying coil surrounding at least one of the first yoke and the second yoke, a magnet spaced apart the width of a second gap from th... | 02/07/1989 |
| 4743178 | Non-linear electromagnetic vibration fluid compression device A non-linear, electromagnetic, vibration compression mechanism comprising a non-linear electromagnetic vibration device and a piston-cylinder, plunger-cylinder, or membrance type pump. A reciprocating compression section of the device may be axially arran... | 05/10/1988 |
| 4621221 | Reversible vibratory motor A reversible vibratory motor includes a driving member responsive to a first frequency of vibration for driving a driven member in a first direction, and responsive to a second frequency of vibration for driving the driven member in the opposite direction... | 11/04/1986 |
| 4565497 | Pump actuator An actuator is described for use in a pump having a pump chamber whose contents are expelled by movement of a pair of pusher plates toward one another. The actuator includes opposed solenoid armatures which are operable for movement between open and close... | 01/21/1986 |
| 4528468 | Digital linear actuator A digital linear actuator capable of converting pulsed electrical current into positive and precise increments of linear motion. The actuator includes a threaded shaft which is prevented from rotating, a cylindrical rotor threaded on the shaft, and drive ... | 07/09/1985 |
| 4500265 | Magnetically actuated compressor A vibration free fluid compressor particularly adapted for Stirling cycle cryogenic refrigeration apparatus comprising a pair of identical opposing ferromagnetic pistons (10, 12) located in a housing (22) and between a gas spring including a sealed volume... | 02/19/1985 |
| 4494023 | Magnetic motor machine A magnetic motor machine is provided in a compact housing and comprises a pair of electromagnetics rigidly attached within said housing in spaced apart relationship. Electronic circuits and power supplies are provided for each of said electromagnetics. Th... | 01/15/1985 |
| 4457673 | Pump and actuator mechanism A pump is described in which a flexible enclosure defines a pump chamber whose contents are expelled by movement of a pusher plate engaged with the enclosure. The pusher plate is moved by an elongate beam spring interconnecting the pusher plate with a sol... | 07/03/1984 |
| 4384829 | Pump and actuator mechanism A pump is described in which a flexible enclosure defines a pump chamber and in which the contents of the pump chamber are expelled by movement of a pair of opposed pusher elements engaged with the enclosure. The pusher elements are displaced by at least ... | 05/24/1983 |
| 4160177 | Vibratory electromagnetic motor A vibratory electromagnetic motor includes a stator unit, a first rotatable armature and a second rotatable armature. The armatures and the stator unit are arranged to reduce motor noise and vibrations when the armatures synchronously rotate in opposite d... | 07/03/1979 |
| 3961209 | Oscillator for time measurement This invention concerns an oscillator for time measurement, comprising a resonator the oscillation of which is maintained by at least one part reciprocated by electrostatic forces relative to at least one electrode connected to a direct voltage source, sa... | 06/01/1976 |
