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| Number | Title | Issue Date |
| 4410820 | Axial flux electric machine A core for an axial flux induction electric machine, the core being formed of metal strip wound about a central axis with the strip being punched to have a plurality of holes which are spaced longitudinally of the strip and aligned on the core to form rad... | 10/18/1983 |
| 4403401 | Method of making a dynamoelectric machine stator having concentric amorphous metal laminations A dynamoelectric machine stator formed of first and second concentrically mounted cylinders at least one of which is made of coiled amorphous metal ribbon. One of the cylindrical portions of the stator is formed of an edgewound helical ribbon in which the... | 09/13/1983 |
| 4399382 | Electrical machine An electrical machine is provided which consists of a stator made up of stacks of plates and a rotor mounted at the ends of the machine in bearing plates and rotatable in the stator. The stator plates, which are asymmetrically designed so that one part ha... | 08/16/1983 |
| 4395815 | Method of making electric machines An electric machine, such as an induction motor, having a rotor and stator core formed of metal strip coiled about a centrally longitudinal axis extending generally normal to the plane of the strip, and wherein the strip is provided with depressions on lo... | 08/02/1983 |
| 4392073 | Dynamoelectric machine stator having concentric amorphous metal laminations and method of making same A dynamoelectric machine stator formed of first and second concentrically mounted cylinders at least one of which is made of coiled amorphous metal ribbon. One of the cylindrical portions of the stator is formed of an edgewound helical ribbon in which the... | 07/05/1983 |
| 4392072 | Dynamoelectric machine stator having articulated amorphous metal components A dynamoelectric machine stator is formed of an amorphous metal yoke or back iron portion, consisting of either a spirally wound coil of amorphous metal ribbon or an edge-wound helix of such ribbon in which the respective turns are stacked together to def... | 07/05/1983 |
| 4370582 | Axial gap squirrel cage induction electric motor The stator (21) of the motor is of annular form, with generally radial slots (22) which receive the energizing windings. The squirrel cage of the rotor has a magnetic component (16) and a conductive component comprising inner ring (10) and outer ring (12)... | 01/25/1983 |
| 4364169 | Method of producing a stator iron core An iron core for a rotary electric machine suitable for use as stator iron cores of AC generators for vehicles, for example, winding an iron core blank of strip form and joining convolutions of the spirally wound iron core blank together by electric resis... | 12/21/1982 |
| 4365178 | Laminated rotor for a dynamoelectric machine with coolant passageways therein A laminated rotor for a dynamoelectric machine characterized by requiring and incorporating only two differently configured sets of rotor laminations to afford axial and radial coolant passageways through the rotor. Each lamination in the respective sets ... | 12/21/1982 |
| 4365180 | Strip wound dynamoelectric machine core A strip of toothed arcuate segments connected end-to-end is wound around a mandrel to form a core structure for a dynamoelectric machine. The length of the arcuate segments is such that the junctions between axially adjacent segments are sandwiched betwee... | 12/21/1982 |
| 4363987 | Direct current machine stator Stator of a direct current electrical machine comprises a support structure (1) defined by a pair of frame members (4) and beams (2), the latter being disposed around the center line (3) of the stator with the ends thereof affixed to the frame members (4)... | 12/14/1982 |
| 4363988 | Induction disk motor with metal tape components An induction motor of the squirrel cage type is disclosed. The stator body and rotor body of the motor are each disclosed as being made of a coil of concentric layers of a thin metal tape which is slotted to receive the rotor and stator windings. The moto... | 12/14/1982 |
| 4361790 | Electromagnetic motor rotatable in either direction An electromagnetic stepping motor has a stator with an armature having the shape of an isosceles trapezoid the base of which is interrupted by a central gap and which is provided with three pole faces. The rotor comprises a permanent magnet. The stator co... | 11/30/1982 |
| 4347449 | Process for making a magnetic armature of divided structure and armature thus obtained The present invention relates to a process for making a magnetic armature of divided structure of annular shape and provided with a concentric annular groove, comprising the steps of winding a filamentary magnetic material on an annular mandrel, impregnat... | 08/31/1982 |
| 4331895 | Ducted rotor and lamination with deep radial passageway A squirrel cage rotor, and a lamination is disclosed, wherein cooling ducts and passages are provided in the rotor. A first rotor section may be of standard laminations and only one type of duct section has radially extending passageways between fingers. ... | 05/25/1982 |
| 4329609 | Rotor with a damper screen for an alternator with projecting poles The invention relates to a rotor with a damper for an alternator with projecting poles. The squirrel cage type screen damper, includes not only conventional polar bars (10) sunk in projecting pole pieces (6a, 6b), but also interpolar bars (22) having wing... | 05/11/1982 |
| 4316112 | Electricity generator An inductor alternator having a stator formed from an annular yoke with laminated pole pieces secured to the internal periphery thereof by welding through slots in the yoke. The rectifiers for rectifying the alternating current are located in a detachable... | 02/16/1982 |
| 4311934 | Off set stator laminations for small rotary transducers An electromagnetic transducer is disclosed which includes a stator, a rotor, and at least one excitation coil winding. The stator includes two substantially geometrically identical stator sections. Each stator section includes an arm having a portion whic... | 01/19/1982 |
| 4301386 | Rotor laminae assembly for a cast rotor dynamoelectric machine A rotor assembly for a dynamoelectric machine is characterized by incorporating three different sets of rotor laminations each of which is provided with punched apertures that respectively form conductor slots arcuately spaced around the periphery of the ... | 11/17/1981 |
| 4293787 | Stator winding holding structure for rotary electric machine A rotary electric machine comprises a rotor axially shorter than the lamination thickness of the stator core and having a coil retaining ring at each end of the coil thereof. The rotary electric machine further comprises a magnetic transmission device bet... | 10/06/1981 |
| 4281265 | Disc motor with A.C. and D.C. stator windings A disc machine has a stator from which teeth and a central boss project axially in the same direction with the central boss projecting beyond the teeth. An AC winding is wound through the slots between the teeth while a DC winding surrounds the central bo... | 07/28/1981 |
| 4272579 | Laminated stack manufacture A die structure for use in a laminated core manufacture wherein a plurality of apertured sheets are provided with projections formed from the portion of the sheet from which the apertures are formed to define an interlocked laminated stack. The first of t... | 06/09/1981 |
| 4268772 | Laminated rotor with cast end windings A laminated electromagnetic core incorporates a double layer winding with the core being formed from first and second sets of apertured laminations of which one set accommodates the conductors of one layer of the winding and the other set accommodates the... | 05/19/1981 |
| 4264836 | Laminated rotor for a synchronous salient-pole electrical machine A rotor, for a synchronous salient-pole electrical machine, having a rim built up in annular layers consisting of segments provided with recesses forming slots on the rim circumference, in which like poles are mounted and which form a plurality of groups ... | 04/28/1981 |
| 4260925 | Stator for an electromagnetic transducer An improved stator for an electromagnetic transducer, such as an alternator, is characterized by a plurality of pole sections joined by a core and configured to increase the space available for stator coil windings and to minimize the length of the windin... | 04/07/1981 |
| 4255684 | Laminated motor stator structure with molded composite pole pieces Stator structures are fabricated using strip material and moldable magnetic composite, either amorphous metal tape and amorphous flake or similar conventional materials. The laminated core is assembled from identical core sections constructed of nested la... | 03/10/1981 |
| 4254349 | Linear induction motor A linear induction motor comprising an inductor formed of a laminated core structure with slots adapted to receive a polyphase winding. It also comprises a secondary element with respect to which the inductor moves. The secondary element includes an elect... | 03/03/1981 |
| 4241274 | Dynamoelectric machine and stationary assembly therefor A two pole dynamoelectric machine has a stationary assembly of which the magnetic characteristics are defined by preselected dimensionless ratios interrelated to each other and generally correlated with preselected operation load conditions of the dynamoe... | 12/23/1980 |
| 4237396 | Electromagnetic machines with permanent magnet excitation An electromagnetic machine (particularly an electric motor) based on the design described in British Patent Application No. 48794/74. Iron losses in this type of machine are reduced by laminating the rotor backing plate (2,4). Although a spiral lamination (FIG... | 12/02/1980 |
| 4220883 | Stator core for electric motor with transformer coil or the like incorporated therein but magnetically isolated therefrom The stator core assembly for an electric motor, particularly such a motor in which operating characteristics of the motor is accomplished by means of a secondary coil, such as a choke coil. The stator core assembly comprises a plurality of laminations mad... | 09/02/1980 |
| 4217510 | Vibration damping stator structure for a hydrogenerator A hydrogenerator comprises a rotor with poles and a stator formed as a ring consisting of separate sectors secured to each other, the angle of every stator sector being of such a value that the product of that value and the number of rotor pole pairs is a... | 08/12/1980 |
| 4215287 | Prime mover rotor shaft having raised ridges A rotatable assembly for use in a prime mover. The assembly has a shaft and at least one plurality of generally annular spaced apart ridges is integrally formed with the shaft so as to extend at least in part generally radially outwardly thereof. A thrust... | 07/29/1980 |
| 4214182 | Support structure for armature conductors Armature conductors are mounted to the ferromagnetic stator core of an AC machine by a plurality of flexible supports. Each support comprises a plurality of teeth interleaved with spacers having a discontinuity which creates a spring section on each tooth... | 07/22/1980 |
| 4210831 | Involute lamination armature for a linear reciprocating motor A generally cylindrical armature for a linear motor includes an outer diameter region of involute laminate construction. Restricting the laminate assembly to an outer diameter region of the armature, which region constitutes a high magnetic flux density r... | 07/01/1980 |
| 4209720 | Electric motors supplied with chopped current A DC electric motor, intended to be supplied with a chopped current is arranged so that the bend of the representative curve of the magnetic flux with respect to the ampere-turns has its origin j situated, approximately, in the middle of the interval of u... | 06/24/1980 |
| 4204314 | Method of making cast windings for electric motors A laminated electromagnetic core and a method of manufacturing incorporates a double layer winding with the core being formed from first and second sets of apertured laminations of which one set accommodates the conductors of one layer of the winding and ... | 05/27/1980 |
| 4197477 | Armature lamina for a dynamoelectric machine An armature lamina for a dynamoelectric machine characterized by having a plurality of equally spaced winding slots formed around its periphery so that the winding-receiving gap, or mouth, of each slot is positioned near one side thereof, rather than bein... | 04/08/1980 |
| 4181868 | Alternating current motor An alternating current electric machine, namely, a small-power asynchronous otor, has two pairs of electric poles which can be supplied with either three-phase or single-phase alternating current. The machine is considerably simpler than classic motors, be... | 01/01/1980 |
| 4174485 | Electric motor with novel stator construction An electric motor has a stator construction which includes identical facing cup shaped members having a circumferential surface which includes a plurality of tabs and recesses. The tabs of one cup shaped member are dimensioned and configured for an engage... | 11/13/1979 |
| 4173724 | Two part laminated stator for an electric machine with an air-gap winding Stator of an electric machine having an air-gap winding with every respective second bar thereof being radially outwardly cranked in the end turn region thereof includes a laminated core subdivided radially into two concentric component laminated cores an... | 11/06/1979 |
