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 |
| 6949013 | Peripheral length correction device of metal rings In the peripheral length correction device of metal rings, a metal ring is laid on a driving roller and a driven roller which are displaceable in mutually separating directions. One or both of the rollers are displaced while rotating the rollers, thereby applying te... | 09/27/2005 |
| 6916232 | Apparatus for superpolishing the inside surface of a seam of a continuous photoreceptor belt Apparatus is provided for superpolishing the inside diameter surface of a seam of a flexible continuous photoreceptor belt. The apparatus includes (a) spaced apart support rollers for supporting the inside surface of the flexible continuous photoreceptor belt into a... | 07/12/2005 |
| 6641465 | Polishing method, polishing device, glass substrate for magnetic recording medium, and magnetic recording medium There are disclosed a polishing method and a polishing device in which cleaning of a glass substrate surface can be achieved to a high level. A glass substrate (MD substrate 1) in the shape of a circular disc having a circular hole in a center portion is ... | 11/04/2003 |
| 6629880 | Rotary mechanical buffing method for deflashing of molded integrated circuit packages A system comprising a rotary buffing device for removing the mold-flash from leadless leadframe substrate panels is described. The leadless leadframe substrate panels have bottom surfaces that contain electrical contact landing and die attach pad surfaces... | 10/07/2003 |
| 6435953 | Coin cleaning apparatus A coin cleaning and grinding apparatus includes a conveyor for conveying coins, two drive rollers of urethane sponge having a urethane hardness between 70 and 90 degrees, and a pair of primary grinding rollers and a pair of secondary grinding rollers of u... | 08/20/2002 |
| 6336848 | Apparatus for polishing leads of a semiconductor package An apparatus for polishing leads of a semiconductor package includes a package holder unit on which a plurality of semiconductor packages are arranged; and a polishing member that automatically polished the leads of the semiconductor package on the packag... | 01/08/2002 |
| 6273784 | Surface treatment method and apparatus for support of lithographic plate There is provided at least one of a moving device for moving a graining brush in the width direction of aluminum web and a turning device for turning the graining brush so that the graining brush can be placed obliquely against a transporting direction of... | 08/14/2001 |
| 6177206 | Surface quality enhancement of aerospace skin sheet The present invention is directed to polishing the surface of an airplane part to an improved specularity by adding the additional step of sanding prior to the polishing step.... | 01/23/2001 |
| 6146258 | Abrasive cleaning apparatus An abrasive cleaning apparatus has an integral drum formed of inner and outer layers of resilient material and a rigid layer in between. Holes are formed through the drum in a spiral pattern around the drum. A wire is engaged in each hole, the wire having... | 11/14/2000 |
| 6080047 | Procedure for the surface treatment of petrous materials A process for surface treating the surface of petrous materials comprises applying friction to the surface to be treated by means of brush bristles which produce progressive erosion of the surface wherein the erosion is of greater depth in zones of lesser... | 06/27/2000 |
| 5018312 | Deflashing apparatus An apparatus for deflashing of elastomeric elements comprising: a) a tumbling barrel having a closable opening for introducing and withdrawal of elastomeric elements and deflashing media to the interior of the barrel; b) a refrigeration chamber sized for ... | 05/28/1991 |
| 4814043 | Apparatus for the manufacture of a material in the form of sheets or a web provided with a watermarklike pattern A material (1) in the form of sheets or a web is provided with a watermarklike pattern (12) in form of a text, figure or similar identification mark visible or displayable in transmitted light by means of relieflike mechanical working off of material, for... | 03/21/1989 |
| 4796388 | Deflashing apparatus An apparatus for deflashing of elastomeric elements comprising: (a) a tumbling barrel having a closable opening for introducing and withdrawal of elastomeric elements and deflashing media to the interior of the barrel; (b) a refrigeration chamber sized fo... | 01/10/1989 |
