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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7180219 | DC motor with externally mounted carbon brush This invention discloses a DC motor with externally mounted carbon brushes, comprising a front end cover, a housing, magnet, a rotor, a commutator and a back end cover, characterized in that the outer wall of the back end cover is provided with two mounting holes fo... | 02/20/2007 |
| 7012350 | Segmented stator switched reluctance machine A switched reluctance machine includes a stator with a plurality of circumferentially-spaced stator segment assemblies that include salient stator poles and inter-polar stator slots. Each of the stator segment assemblies includes a stack of stator plates forming a s... | 03/14/2006 |
| 6710482 | Generator A generator comprising a generator housing and a generator drive shaft including a power input shaft coupled to a drive member through a coupling arrangement, whereby in use the drive member is coupled to an output shaft of an associated engine. The coupling arrange... | 03/23/2004 |
| 6608410 | Motor having shaft-grounding arrangement A DC motor has a conductive case and an arrangement for electrically connecting the shaft and case of the DC motor that is grounded. The arrangement includes a conductive member and a pressing member that presses the conductive member against the shaft, t... | 08/19/2003 |
| 6218757 | Minimizing shaft currents in dynamoelectric machines Some dynamoelectric machines develop shaft E.M.F.'s during operation which lead to circulation currents in the shaft of the machine. The shaft current will attempt to flow through the bearings of the machine, unless some action is taken to prevent or limi... | 04/17/2001 |
| 5714823 | Quasi regulated permanent magnet generator A quasi regulated electric generator, comprising a stator having teeth on an inner periphery defining slots therebetween, stator windings disposed in the slots forming output phases, a rotor rotatably mounted within the stator, the rotor having permanent ... | 02/03/1998 |
| 5613259 | High frequency electric toothbrush An electric oscillating tool, having particular but not necessarily exclusive utility as an electric toothbrush, for driving a brush head assembly or end effector with a resonant mechanism at high frequencies. The electric toothbrush includes handle housi... | 03/25/1997 |
| 5233251 | Electric motor with non-radial magnetic drive system A D.C. motor includes a rotor and a stator with chordally oriented electromagnetic units, with windings pulse energized to establish a rotary force on the rotor as a result of the non-radial orientation of the driving forces. Each electromagnetic unit inc... | 08/03/1993 |
| 3952220 | RPM Measuring apparatus A rpm measuring apparatus includes a rpm signal generator having a magnetic circuit composed of a toothed disc, driven by a drive shaft, and a yoke carrying an induction coil. At least one portion of the yoke opposite the toothed disc is also provided wit... | 04/20/1976 |
