Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7436098 | Current limiting means for a generator The invention provides means of limiting maximum current conducted through windings of an electric machine having a rotor and a stator. By encouraging an appropriate leakage flux around a winding, a leak impedance can be achieved which may be used, according to the ... | 10/14/2008 |
| 7414345 | Commutator and armature A commutator including a commutator main body having a plurality of commutator pieces and a short-circuit member having a short-circuit conductor for short-circuiting commutator pieces. The short-circuit conductor includes superimposed first and second short-circuit... | 08/19/2008 |
| 7355308 | Mover combination with two circulation flows A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of th... | 04/08/2008 |
| 7304856 | Assembly for holding circuit cards An assembly for holding circuit cards may comprise a plurality of slots, each slot being configured to receive a circuit card. At least one slot may be modifiable so as to permit the at least one slot to hold circuit cards having differing depths. ... | 12/04/2007 |
| 7239063 | Motor having supply brushes A motor has a plurality of excitation coils, a commutator having a plurality of segments, a plurality of supply brushes and a short-circuit line. Each coil is connected to corresponding ones of the segments. The supply brushes include a plurality of supply brushes e... | 07/03/2007 |
| 7211919 | Thermally-conductive stator support structure A stator assembly includes a plurality of stator coil assemblies and a stator coil support structure constructed of a non-magnetic, thermally-conductive material. The stator coil support structure includes an axial passage for receiving a rotor assembly and a plural... | 05/01/2007 |
| 7105969 | Two speed electric motor with link wound dual-commutator and dual-armature winding A permanent magnet D.C. electric motor includes a stator housing, permanent magnet structure, and an armature assembly. The armature assembly includes a shaft rotatably mounted in the stator housing, lamination structure, first and second coil windings associated wi... | 09/12/2006 |
| 6921992 | Machine with a superconducting winding arranged in a winding carrier and means for holding said winding carrier The machine included a rotor which is rotatably arranged about an axis of rotation with a superconducting winding in a winding carrier. In order to hold the winding carrier inside the outer housing of the rotor, a fixing device which extends axially on one-side is p... | 07/26/2005 |
| 6903483 | Motor A motor has twenty-four segments and a commutator. Each of eight short-circuit members short-circuits three of the segments with one another. Each short-circuit member includes an annular base portion and three arms radially extending from the base portion. Each arm... | 06/07/2005 |
| 6844649 | Armature for a dynamo-electric machine having offsetting and overlapping coils An armature includes a plurality of equalizing connectors for permanently electrically connecting pairs of commutator segments that should have the same electric potential, so that each of the pairs of the commutator segments that should have the same electric poten... | 01/18/2005 |
| 6756717 | Motor A motor includes a commutator, which has twenty-four segments. Each of eight short-circuit members is connected to three of the segments. Each short-circuit member extends in an arcuate form in an angular range corresponding to arranging positions of three segments ... | 06/29/2004 |
| 6724121 | Flat mechanical electric commutators An improved flat or cylindrical mechanical electric commutator with neutral segments (4) between the current carrying segments which allow the current carrying carbon brushes (11, 12, 13, 14) in a brush holder (7) to pass from a negative current... | 04/20/2004 |
| 6617741 | Commutator for electric rotary machine and manufacturing method thereof A commutator having even number (2n) of commutator segments and n segment pairs, each pair consisting of two commutator segments positioned symmetrically with respect to a commutator center, is mounted on a rotor of an electric rotary machine. The commuta... | 09/09/2003 |
| 6611073 | Magnetically levitated motor A rotor includes four magnetic poles provided in a rotational direction at intervals of 90 degrees. A stator includes a winding group for rotation and a winding group for levitation. Each of the winding groups has concentrated windings spaced at intervals... | 08/26/2003 |
| 6560854 | Coil-winding method for electric motor, generator and alternator A coil-winding method comprises: winding first coil clockwise around first, counterclockwise around second, and clockwise around third swath along mandrel, hooks grouped into swaths; winding second coil clockwise around between first arid second hooks of ... | 05/13/2003 |
| 6425175 | Method of manufacturing a stator In a twisting formation method having an inside jig provided in a ring shape with inside holding portions for folding one of the straight portions of a near letter U shaped wire and an outside jig provided in a shape of ring concentric with that of the in... | 07/30/2002 |
| 6388355 | Motor for an electric power steering assembly A motor for an electric power steering assembly includes a yoke, a multipolar magnetic field portion composed of at least four poles secured to the inner wall of the yoke, a shaft disposed within the yoke so as to be able to rotate freely, an armature sec... | 05/14/2002 |
| 6236137 | Commutator motor A commutator motor comprises a yoke, a magnetic field portion secured to the inner wall of the yoke, a shaft disposed within the yoke so as to be able to rotate freely, an armature secured to the shaft having windings constructed by winding wire by a lap-... | 05/22/2001 |
| 6218755 | Dynamo-electric machine and method of manufacture therefor A dynamo-electric machine comprises a shaft, a core secured to the shaft having slots formed therein extending in the axial direction, a winding composed of a wiring wound by a lap winding method through the slots, a commutator having commutator segments ... | 04/17/2001 |
| 6181046 | Dynamo-electric machine with commutator assembly A commutator assembly for an electric motor includes a commutator having commutator segments arranged circumferentially, brushes contacting the commutator segments, and an equalizer connecting commutator segments so they have the same electric potential, ... | 01/30/2001 |
| 6075305 | Dynamo-electric machine A dynamo-electric machine satisfies an expression Req ࣙ(.rho.0 .multidot.(r1*͌)/(S/3))*(2.5) where .rho.0 (Ω.multidot.m) is the resistivity of armature coil, S (m2) is the cross-sectional area of the conductor portion... | 06/13/2000 |
| 6057623 | Dynamo-electric machine having a hook shaped commutator and equalizer attached thereto A dynamo-electric machine comprises an armature having a winding composed of a wire or wires wound by a lap winding method through slots extending in the axial direction formed on the outer circumferential surface of a core secured to a shaft, a commutato... | 05/02/2000 |
| 6057626 | Commutator for a dynamo-electric machine and method of manufacture therefor A commutator for a dynamo-electric machine according to the present invention comprises a cylindrical commutator main body provided with a plurality of commutator segments disposed around the circumference thereof, an equalizer assembly disposed inside th... | 05/02/2000 |
| 4710662 | Dynamoelectric machine rotor structure having improved insulation A rotor structure for dynamoelectric machines includes a central shaft, defining a rotation axis, which supports main rotor windings. A winding support is disposed about and secured to the shaft and an encapsulated equalizer winding assembly is supported ... | 12/01/1987 |
| 4492890 | Stator winding providing magnetomotive force wave of reduced harmonic content A stator winding configuration employs graded, overlapping stator winding coil groups. The outer coils of the coil group have a reduced number of turns with respect to the center coil or coils of the group. The coil groups have an expanded coil group widt... | 01/08/1985 |
| 4341971 | Armature of electric rotating machine At least one circumferential slot is provided at a predetermined axial position on an armature core so as to cross axial slots receiving a plurality of coil sides of an armature winding and to communicate adjacent axial slots, and the plurality of coil si... | 07/27/1982 |
| 4126798 | Superconductive winding A superconductive field winding is provided for the rotor of a dynamoelectric machine. The winding consists of a number of multi-turn coils of a superconductive conductor which are wound about the periphery of the rotor thereby defining at least one pole ... | 11/21/1978 |
