| Patents for H02K 33 - Motors with reciprocating, oscillating, or vibrating magnet, armature, or coil system (7,676) |
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| 01/29/1992 | EP0467943A1 Linear actuator. |
| 01/28/1992 | US5083905 Linear motor powered pump unit |
| 01/07/1992 | US5079459 Electro-hammer rapper |
| 01/07/1992 | US5078472 Driving device for an optical system |
| 12/18/1991 | EP0305474B1 Voice coil linear actuator |
| 12/03/1991 | US5069422 Electromagnetic force valve driving apparatus |
| 11/27/1991 | EP0458295A2 Voice coil type actuator |
| 11/26/1991 | US5068554 Electric motor |
| 11/21/1991 | EP0457666A1 Large amplitude low frequency vibrator |
| 11/19/1991 | US5066204 Diaphragm pump |
| 11/19/1991 | CA2036198A1 Large-amplitude low-frequency vibrator |
| 11/18/1991 | WO1991017901A1 Electromagnetically powered engine apparatus and method |
| 11/12/1991 | US5065126 Linear actuator |
| 11/06/1991 | EP0454692A1 Vibrator |
| 10/30/1991 | EP0454325A2 Magnetically coupled actuator |
| 10/26/1991 | CA2040736A1 Magnetically coupled lens actuator |
| 10/15/1991 | US5057729 Resin-sealed rotary actuator for variable shock absorber |
| 10/15/1991 | US5057724 Ceramic magnet motor |
| 10/15/1991 | US5057723 Linear motor |
| 10/15/1991 | US5056902 Magnetically coupled lens actuator |
| 10/09/1991 | EP0450288A2 Electrical linear motor |
| 09/27/1991 | WO1991015051A1 Electromagnetic actuator |
| 09/17/1991 | US5049768 Reducing engine noise by active oscillatory torque control |
| 09/03/1991 | US5045735 Device comprising an actuator, method for use in the device, and system for controlling a gas or liquid flow, comprising the device |
| 08/20/1991 | US5040372 Linear drive motor with flexure bearing support |
| 08/14/1991 | EP0441737A1 Magnetic gain adjustment for axially magnetized linear force motor with outwardly surfaced armature |
| 08/08/1991 | WO1991011846A1 A reciprocating pump or motor |
| 08/07/1991 | EP0439910A1 Improved redundant force motor |
| 08/06/1991 | US5038061 Linear actuator/motor |
| 08/06/1991 | US5036930 Electromagnetically powered engine apparatus and method |
| 08/01/1991 | DE4002733A1 Linear induction motor for movements in millimetric range - consists of units of flat prim. coil and honeycomb sec. coil subject to forced-draught cooling |
| 07/23/1991 | US5034670 Control circuit for electromagnetic actuator |
| 07/02/1991 | CA1285595C Electromagnetic oscillation motor |
| 06/19/1991 | EP0432877A2 Rotary head actuator for a magnetic disk drive data storage device |
| 06/18/1991 | US5024247 Control motor for a servo valve |
| 06/12/1991 | CN1052226A Magnetic-energy engine |
| 06/11/1991 | US5023496 Linear motor |
| 05/28/1991 | US5019764 Portable laser scanning system and scanning methods having a resonant motor control circuit |
| 05/22/1991 | EP0428288A2 An actuator structure for a magnetic head suspension assembly in a disk drive |
| 05/21/1991 | US5018122 Linear motor actuator for moving an optical read/write head |
| 05/08/1991 | CN1012596B Electromagnetic driving circuit |
| 05/07/1991 | US5013223 Diaphragm-type air pump |
| 04/30/1991 | US5012144 Linear direct drive motor |
| 04/30/1991 | CA1283684C Linear motor |
| 04/24/1991 | EP0423253A1 Permanent magnet linear electromagnetic machine |
| 04/02/1991 | US5004944 Lightweight high power electromagnetic transducer |
| 03/12/1991 | US4999531 Electromagnetic actuators |
| 03/06/1991 | EP0415780A1 Electromechanical transducing along a path |
| 03/06/1991 | EP0414702A1 Voice coil actuator. |
| 03/01/1991 | CA2023839A1 Electromechanical transducing along a path |
| 02/26/1991 | US4995711 Slide table |
| 02/19/1991 | US4994931 Actuator structure for a magnetic head suspension assembly in a disk drive |
| 02/12/1991 | US4992685 Reciprocating motor-compressor with W-shaped core |
| 02/12/1991 | US4992684 Linear motor and driving apparatus using the same |
| 02/05/1991 | US4990805 Low voltage electromagnetic pulse actuator |
| 01/30/1991 | CN1048957A Miniaturized electromagnetic monophase actuator |
| 01/29/1991 | US4988907 Independent redundant force motor |
| 01/29/1991 | US4988904 Voice coil motor with an encoder |
| 01/29/1991 | US4988903 Coil assembly for voice coil motor |
| 01/15/1991 | US4985794 Rotary drum device having a head drive with positively bonded bobbin fixing members |
| 01/15/1991 | US4985652 Single-phased angular electromagnetic actuator |
| 01/15/1991 | US4984541 Valve stepping drive apparatus |
| 01/10/1991 | WO1991000641A1 Compact bi-directional torque motor |
| 01/10/1991 | DE3921084A1 Electrically-driven diaphragm vacuum pump or pressure pump - has cage around electromagnet coil through which central armature shaft extends between two vibratory spring plates |
| 01/09/1991 | EP0407317A1 Adjustable membrane pump |
| 01/09/1991 | EP0407315A1 Membrane pump |
| 01/08/1991 | CA2020583A1 Diaphragm pump |
| 01/01/1991 | US4981309 Electromechanical transducing along a path |
| 12/27/1990 | WO1990016109A1 Compact monophase electromagnetic solenoid |
| 12/27/1990 | WO1990016107A1 Compact monophase electromagnetic actuator |
| 12/21/1990 | CA2012856A1 Compact bi-directional torque motor |
| 12/11/1990 | US4977342 Electromagnetic vibration generators |
| 11/20/1990 | CA1276671C Electromagnetic vibrator for seismic and civil- engineering applications |
| 11/14/1990 | EP0397322A2 An actuator magnetic circuit and method therefore |
| 11/14/1990 | CN1046863A 振动器 Vibrator |
| 11/06/1990 | US4968909 Compact bi-directional torque motor |
| 11/06/1990 | US4968225 Magnet holder for electromagnetic diaphragm pump |
| 11/06/1990 | US4968224 Vibrator for diaphragm pump and magnet holder therefor |
| 11/01/1990 | WO1990013171A1 Linear actuator |
| 11/01/1990 | WO1990013170A1 Electromagnetic drive system |
| 11/01/1990 | WO1990013169A1 Electric motor |
| 11/01/1990 | WO1990012961A1 Stirling cycle machine and compressor for use therein |
| 10/16/1990 | US4962583 Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means |
| 10/10/1990 | CN1009984B Power supply controler for oscillating motor for driving compressor unit |
| 10/03/1990 | EP0390519A1 Electromagnetic force valve driving apparatus |
| 10/03/1990 | EP0390422A1 Valve stepping drive apparatus |
| 10/02/1990 | US4960474 Iron, boron and rare earth components; anisotropic; flat disks |
| 09/20/1990 | WO1990010931A1 Voice coil actuator |
| 09/11/1990 | US4956735 Actuator magnetic circuit |
| 08/21/1990 | US4951023 Electromagnetic drive apparatus having a flat coil |
| 08/21/1990 | US4950931 Vibrator |
| 07/31/1990 | US4945269 Reciprocating electromagnetic actuator |
| 07/26/1990 | WO1990008421A1 Vibrator |
| 07/26/1990 | WO1990008420A1 Permanent magnet linear electromagnetic machine |
| 07/17/1990 | CA1271642A1 Cryogenic refrigeration system having an involute laminated stator for its linear drive motor |
| 06/27/1990 | EP0375093A2 Sensitive electrical to mechanical transducer |
| 06/27/1990 | EP0375050A1 Device comprising an actuator, method for use in the device, and system for controlling a gas or liquid flow, comprising the device |
| 06/27/1990 | EP0374693A1 Slide table |
| 06/27/1990 | CN1043412A Multi-gap pulse-oscillating electric motor with variable reluctance |
| 06/26/1990 | US4937481 Permanent magnet linear electromagnetic machine |