Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 5023510 | Picture tube having an electro-magnetic deflection unit The invention relates to a deflection unit (4) of a picture tube, the deflection unit (4) comprising a coil holder (5) and a cylindrical connection member (6) with elastic tongues. The cylindrical connection member (6) is flexibly connected to the coil ho... | 06/11/1991 |
| 4922167 | Picture display device having means for compensating line stray fields Picture display device having a display tube (3) and a deflection unit (9) comprising a field deflection coil and a line deflection coil (11). To comply with a predetermined interference radiation standard, the picture display device comprises a first set... | 05/01/1990 |
| 4823460 | Method of manufacturing an electromagnetic deflection unit A pair of saddle-shaped deflection coils are wound in a jig and are then assembled with other components. During winding the coil an electrically insulating support having electrically conductive connection points for the coil terminators is used, the ter... | 04/25/1989 |
| 4819323 | Method of manufacturing an electro-magnetic deflection unit for a cathode ray tube An electro-magnetic deflection coil with a flangeless narrow end is wound against the inside of a funnel-shaped support 14. The support 14 opposite the windows of the coil parts 19 has recesses 25 through which axially extending guide elements 26, 27 are ... | 04/11/1989 |
| 4612524 | Deflection coil system for a picture display tube The deflection coil system (7) comprises a synthetic resin support (9) which on its outside is surrounded by an annular ferromagnetic core (19) having toroidal deflection coils (21). On the rear portion (11) of the support (9) outwardly directed resilient... | 09/16/1986 |
| 4484166 | Coil support for an electromagnetic deflection unit A hollow coil support for an electromagnetic deflection unit adapted to surround a part of a cathode-ray tube, the inside of the support carrying a deflection coil wound directly thereon, the support at each of its respective ends having a slotted annular... | 11/20/1984 |
| 4431940 | Color display tube having a deflection device and deflection device for a color display tube In a television deflection device which is mounted on a color cathode ray tube, a frustoconical supporting member (3) has a pair of coil halves (6) and (7) which form horizontal deflection coils halves. These coils have longitudinal portions (11, 12, 14 a... | 02/14/1984 |
