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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7019427 | Permanent magnet synchronous motor A synchronous motor includes a stator, a rotor and permanent magnets. The rotor includes a rotor iron core rotatable relative to the stator, and a plurality of conductor bars accommodated within corresponding slots in the rotor iron core. The conductor bars have the... | 03/28/2006 |
| 6930422 | Multi-stage motor An electrical machine includes first and second magnetically permeable parallel cores. Each core is elongated to thereby define a lengthwise direction and first and second core profiles transverse to the lengthwise direction. First coils are wound about the first co... | 08/16/2005 |
| 6891295 | Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w... | 05/10/2005 |
| 6707216 | Single phase line start permanent magnet synchronous motor A single phase line start permanent magnet synchronous motor is started by an interaction between magnetic fields of the coil and of the secondary conductor, and an normal operation can be performed using only the permanent magnet and the operating condenser of smal... | 03/16/2004 |
| 6580190 | Circumferential confronting type motor A circumferential confronting type motor includes an armature core that has drive coils wound around its plurality of poles, and a drive magnet positioned opposite to the armature core in the radial direction. The drive magnet has a plurality of divided m... | 06/17/2003 |
| 6404097 | Rotary electrical machines A rotary electrical machine comprising a stator (10) and at least one rotor (12) having a plurality of permanent magnets (14). The rotor consists of a rotor disc, at the outer edge of which the permanent magnets are mounted. The rotor disc (12) is provide... | 06/11/2002 |
| 5281879 | Synchronous motor with two permanent magnet rotor portions A synchronous motor includes a unitary rotor, a first stator, a second stator and phase-changing switches. The unitary rotor has a first rotor portion formed by a first permanent magnet and a second rotor portion formed by a second permanent magnet and an... | 01/25/1994 |
| 3967827 | Synchronized induction motor A synchronized induction motor, designed to drive a turntable of a record player, has a stator with two pole pairs spaced 90° apart and a rotor with a short-circuited cylindrical body inductively entrainable by the alternating stator field. The rotor bod... | 07/06/1976 |
