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 |
| 7316436 | Differential wheel mounting for railroad car A differential wheel mounting for replacing a standard railroad axle assembly having a wheel seat portion which includes a sleeve having several sliding surfaces fixedly mounted over the wheel seat portion of the axle, a railroad wheel with a running surface for con... | 01/08/2008 |
| 6702350 | Bolted axle wheel assembly A wheel and axle assembly for a material handling cart has a wheel with a bearing and an axle that extends through the bearing. The axle has a bolt cavity with female cavity threads and an inside tapered portion. A bolt having male bolt threads and an out... | 03/09/2004 |
| 6390524 | Vehicle having easily removable and replaceable and reusable wheel An axle mounting assembly for a vehicle. The assembly comprises a yoke (24) including a generally U-shaped member defining a slot (26) for receiving an axle with the slot extending vertically and having an upper opening. A member (54) is removable attacha... | 05/21/2002 |
| 5951081 | Lateral support for a drive gear and wheel on a locomotive axle A method and apparatus for aiding in positioning during assembly of a locomotive wheel with respect to a drive gear mounted adjacent the wheel during assembly and for maintaining the position of the drive gear during locomotive operation. The apparatus in... | 09/14/1999 |
| 5884956 | Modified railroad wheel and axle assembly A modified railroad wheel and axle assembly used to replace conventional railroad wheel and axle assemblies whereupon one end of a railroad axle assembly is machined to receive a modified railroad wheel assembly thereon. The other end of the railroad axle... | 03/23/1999 |
| 5609108 | Track wheel kingpin system for a camera dolly A camera dolly has a track wheel system including a kingpin pivotally supported on a dolly chassis. A kingpin tube extends laterally from the kingpin. An axle is pivotally supported within the tube on pins. A track wheel around a bearing is supported on a... | 03/11/1997 |
| 5495809 | Movable platform having removable wheels for orientation changing A movable platform or dolly for supporting heavy equipment in which the dolly rolls on tracks. Track sections are located under the dolly and additional sections can be attached to extend the track.... | 03/05/1996 |
| 5373791 | Toy wheel A toy wheel for a model electric train is provided which is formed of two parts axially arranged next to each other. One part of the wheel has a rolling face having a high coefficient of friction for engagement with a track rail. The other part of the whe... | 12/20/1994 |
| 5170713 | Wheel assembly for a storage and retrieval machine A wheel assembly for a storage and retrieval machine which is travelable on a rail along a path adjacent overhead storage locations which store objects delivered to and retrieved from the locations by the storage and retrieval machine. The storage and ret... | 12/15/1992 |
| 4307910 | Railway wheels and light weight axles A lightweight wheel and axle assembly that reduces unsprung weight thereby improving the ride. The assembly also diminishes hunting and reduces tendencies towards unstable dynamic conditions. The wheel and axle assembly is easily adaptable to conventional... | 12/29/1981 |
| 4004838 | Vehicle hub assembly A hub construction for connecting a wheel and tire assembly to each of the drive shafts of a vehicle subassembly including a hub carrying the wheel and tire assembly adapted to be slidably received on the drive shaft, and a nut threadedly engaging the dri... | 01/25/1977 |
