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Class Information
Number: 310/268
Name: Electrical generator or motor structure > Dynamoelectric > Rotary > Rotor structure > Armatures > Disc
Description: Subject matter relating to disc type armatures.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
5412265 Planar micro-motor and method of fabrication May. 2, 1995
5406157 Electromagnetic bearing arrangement Apr. 11, 1995
5400197 Disc drive spindle motor Mar. 21, 1995
5397953 Stator for disc type electric motor Mar. 14, 1995
5396140 Parallel air gap serial flux A.C. electrical machine Mar. 7, 1995
5361010 Tachogenerator for speed control of electric motors Nov. 1, 1994
5349259 Rotor for a printed motor Sep. 20, 1994
5334899 Polyphase brushless DC and AC synchronous machines Aug. 2, 1994
5334898 Polyphase brushless DC and AC synchronous machines Aug. 2, 1994
5309055 High-power electrical machinery May. 3, 1994
5304881 Means for producing rotary motion Apr. 19, 1994
5304886 Printed circuit motor Apr. 19, 1994
5294853 Electrical powerplant for vehicles Mar. 15, 1994
5291104 DC commutatorless motor Mar. 1, 1994
5289069 Brushless motor Feb. 22, 1994
5278470 Homopolar machine which acts as a direct current (DC) high voltage generator or motor Jan. 11, 1994
5254925 Permanent magnet control means Oct. 19, 1993
5254895 Motor for disc drive Oct. 19, 1993
5252876 Frequency generator and a D.C. motor equipped with same Oct. 12, 1993
5252881 Micro motors and method for their fabrication Oct. 12, 1993
5252871 Roller thrust bearing structure for spindle shaft Oct. 12, 1993
5245238 Axial gap dual permanent magnet generator Sep. 14, 1993
5245235 Motor having index detection mechanism used for disc apparatus and disc apparatus using such a motor Sep. 14, 1993
5235454 Light beam scanner Aug. 10, 1993
5229677 Electric propulsion motor for marine vehicles Jul. 20, 1993
5229696 Servomechanism Jul. 20, 1993
5216310 Axial flux electromagnetic micromotors Jun. 1, 1993
5214337 Electromagnetic rotary actuator May. 25, 1993
5197180 Method for making an electric motor winding Mar. 30, 1993
5191251 Electrostatic micromotor Mar. 2, 1993
5191255 Electromagnetic motor Mar. 2, 1993
5189323 Rotary, vertical-drive, tethered micromotor Feb. 23, 1993
5184040 Electric power generators having like numbers of magnets and coils Feb. 2, 1993
5179307 Direct current brushless motor Jan. 12, 1993
5177054 Flux trapped superconductor motor and method therefor Jan. 5, 1993
5177389 Tacho generator Jan. 5, 1993
5177392 High efficiency, low reactance disk-type machine including an improved rotor and stator Jan. 5, 1993
5175459 Low profile vibratory alerting device Dec. 29, 1992
5170645 Direct drive circular knitting machine Dec. 15, 1992
5168187 Axial pole stepping motor Dec. 1, 1992
5146144 Electric motor Sep. 8, 1992
5144183 Flat motor of reduced length Sep. 1, 1992
5142181 Direct current dynamo Aug. 25, 1992
5138207 Flux trapped superconductor sychronous motor with creep compensation Aug. 11, 1992
5130595 Multiple magnetic paths machine Jul. 14, 1992
5124604 Disk drive motor Jun. 23, 1992
5117141 Disc rotors with permanent magnets for brushless DC motor May. 26, 1992
5111098 Unitary rotational speed sensor May. 5, 1992
5109171 Low-noise miniature electric motor Apr. 28, 1992
5099162 Coil of superconducting material for electric appliance and motor utilizing said coil Mar. 24, 1992

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