Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 4160182 | Laminated core manufacture A dynamoelectric device having a wound core provided with a plurality of circumferentially spaced, radially opening slots disposed in an annular array. Windings are provided in the slots and an annular slot closure formed of magnetic material having a plu... | 07/03/1979 |
| 4156822 | Dynamoelectric machine having a nonturned rotor assembly A stator core lamination and a rotor core lamination for a dynamoelectric machine are formed from the same lamination blank. The stator core lamination has a series of operations performed on it, preferably during the punch press manufacture of the lamina... | 05/29/1979 |
| 4134036 | Motor mounting device A device for mounting an electric motor stator within an outer housing is disclosed. The mounting structure comprises a longitudinally convoluted hollow metal cylinder having three longitudinal plates attached at 120° intervals to its outer wall. The cyl... | 01/09/1979 |
| 4134035 | Fractional horsepower motors with selectable winding windows One disclosed motor includes winding leg and yoke laminations that form a core yoke section and a core winding leg (or coil core). An excitation coil is supported on the coil core; and the coil core and core yoke are relatively oriented so that a first su... | 01/09/1979 |
| 4110642 | Noise reduction arrangement in a claw-type dynamo electric machine, particularly multi-phase automotive-type a-c generator To reduce the noise level of operation and particularly cyclically recurring attractive forces between the rotor and the stator, the stator stack package is interrupted centrally by a sheet or strip of material different from electrical lamination sheet s... | 08/29/1978 |
| 4102040 | Method of manufacturing a curved component of a magnetic circuit Identical strips of magnetic metal having alternating slots and pole teeth long one edge are cut from sheet material in a pattern minimizing waste of metal, stacked, and bent into a cylinder or sector of a cylinder. The ends of the stacks are then fastened... | 07/25/1978 |
| 4087709 | Electric rotating machine An electric motor or other electric rotating machine in which certain of the stator poles are of hardened magnetic material to provide the machine with a unidirectional self-starting characteristic. In certain preferred embodiments the housing for the mot... | 05/02/1978 |
| 4086508 | Can for use in canned motor A can for use in a canned motor made of a soft magnetic metal plate. Said metal plate has the magnetically hard direction of the texture oriented to the circumferential direction of the can body. Said metal plate also has the magnetically easy direction o... | 04/25/1978 |
| 4080724 | Method of forming electrical machine care from E-laminations The use of E-shaped transformer laminations in rotating electrical machinery in which the E-laminations are modified and assembled in a stacked manner and fixedly secured in rigid relationship to form a stator or rotor core receiving appropriate windings ... | 03/28/1978 |
| 4053801 | Armature structure for permanent magnet d-c motor A permanent magnet d-c motor is described in which the weight and cost of the armature is substantially reduced by removing some of the steel laminations. To maintain performance, the remaining laminations are spaced apart so that the axial length of the ... | 10/11/1977 |
| 4051401 | Magnetic loops closure elements for electric motor A spherical air gap motor wherein the magnetic ring closing the stator magnetic loop has a non-cylindrical shape.... | 09/27/1977 |
| 4047062 | Rotating electrical machine The stator of a rotating electrical machine consists of radially disposed pole teeth, a magnetic circuit closure core surrounded by these pole teeth and a winding, the coils of which are inserted between the pole teeth and envelop the core.... | 09/06/1977 |
| 3983621 | Methods of making fractional horsepower motors One disclosed method involves punching winding leg and yoke laminations from a strip, subsequently forming a core yoke section, and forming a core winding leg (or coil core). Thereafter, an excitation coil is supported on the coil core, and the coil core ... | 10/05/1976 |
| 3983433 | Wire stator core structure and method of making same A stator core structure for a dynamoelectric machine has a filament of ferro-magnetic material generally spirally disposed in at least one generally planar layer. A plurality of spaced apart teeth is provided in the layer each being respectively constitut... | 09/28/1976 |
| 3983435 | Stator assembly formed of flat, strip material A stator assembly for a dynamoelectric machine has a yoke member formed of a continuous strip of ferro-magnetic material with a generally cylindric inner surface. A plurality of spaced teeth are provided extending axially along and inwardly from the inner... | 09/28/1976 |
| 3983434 | Segmented stator core structure and method for making same A stator core structure, and method of making same, for a dynamoelectric machine formed of a first plurality of generally U-shaped segments each having a bight portion and leg portions. Each of the first segments is formed of a plurality of relatively thi... | 09/28/1976 |
| 3956678 | Electrodynamic system comprising a variable reluctance machine Stepping motor techniques are made viable for heavy duty machines with variable speed operation (motors or generators) by reason of the simplification and gain in specific output and efficiency which results from constructions ensuring maximum saturation ... | 05/11/1976 |
| 3942055 | Hermetic motor stator A stator for a dynamoelectric machine having a primary phase winding arranged in a plurality of winding receiving slots and including at least two coil groups defining at least two predetermined primary magnetic poles. An auxiliary phase winding defining ... | 03/02/1976 |
