Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7404362 | Model train car with tilting mechanism A model vehicle, such as a model electric train, includes a motorized tilt mechanism for tilting train cars when traversing curved sections of track. The operation of the tilt mechanism is automated using a motor, drive train, and control circuit. A motorized tilt m... | 07/29/2008 |
| 6990907 | Method and system for weighting model railroad cars A system and method for weighting a model railcar which uses a plurality of thin machined led alloy weights disposed in recesses of a model rail car frame. ... | 01/31/2006 |
| 5904100 | Method and device to clean three rail model railroad tracks A three rail Model Railroad track cleaning method and device in which a roll of cleaning tissue is unwound from a supply roll and rewound on a second roll in contact with the tracks, at a rate slower than it is travelling over the tracks, so that it has a... | 05/18/1999 |
| 5816168 | Track cleaning device for model railroad cars This track cleaning device is for model railroading enthusiasts that can be easily installed into many different types of model railroad cars. The track cleaning device car will provide an efficient method of keeping the electrical rails clean of foreign ... | 10/06/1998 |
| 4854742 | Wheel bearing, in particular for toy vehicles A wheel bearing, in particular for toy vehicles, which are usually subjected to strong overloads, is characterized in that, in the vicinity of each end, the wheel axle (10, not shown in FIG. 2) has both a bearing face (14, 15) with a relatively small radi... | 08/08/1989 |
| 4799431 | Model locomotive truck mounting mechanism An improved truck mounting mechanism for a model railroad locomotive includes a gimbal body fixed to a wheel-bearing truck frame. A gimbal mount is provided for receiving the gimbal body. The gimbal mount is flexibly secured to the locomotive chassis and ... | 01/24/1989 |
| 4522607 | Toy railroad vehicle with alignment bias A toy train set includes a toy train car operative upon a two rail trackway. The trackway includes means for reducing the toy train speed at selected places along the trackway and a track intersection having no moving parts which permits a child user to s... | 06/11/1985 |
| 4417523 | Rideable motor-driven toy train An electric motor driven toy train is disclosed which comprises multiple cars, each of which is articulated about a vertical axis and each of which has only a single axle so as to minimize the turning radius of the train set. A child sits upon the second ... | 11/29/1983 |
