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 |
| 5415121 | Air flow indicator for sailboat sails An air flow indicator for a sailboat sail has a lever passing through a small hole in the surface of the sail. Flexible tails are affixed to opposite ends of the lever on opposite sides of the sail. The lever is so configured as to remain centered with re... | 05/16/1995 |
| 5109787 | Cambered forestay fairing An elongated aerodynamically shaped fairing is disclosed herein having a body with a passageway at its rear for slideability receiving the bolt rope or cable of a sail and an interconnecting slot with the passageway for conducting a portion of the sail lu... | 05/05/1992 |
| 5083520 | Mast, in particular for sailing boat A mast for a sailboat includes at least two mast components having a lower end attached to the boat on opposite sides of a longitudinal median plane of the boat. Upper ends of the mast components are connected to each other. Each of the mast components ha... | 01/28/1992 |
| 4947776 | Cambered forestay fairing An elongated aerodynamically shaped fairing is disclosed herein having a body with a passageway at its rear for slideability receiving the bolt rope or cable of a sail and an interconnecting slot with the passageway for conducting a portion of the sail lu... | 08/14/1990 |
| 4690088 | Sail rigging with fairing The present sailboat sail has extremely high aerodynamic efficiency. The sail has a bifurcated forward edge, the forward ends (17A) of each of which is carried by a footing rope (45) in a track of a vertical stay (22); a fairing (44) is arranged to wrap a... | 09/01/1987 |
| 4646671 | Airflow enhancement for sailboat headsails An apparatus for improving the flow of air past the headsail (5) of a sailboat including an airfoil (41) which is oval-shaped in cross-section, the leading edge of the sail being secured in a groove (45) along one side thereof. A portion (37 or 39) of the... | 03/03/1987 |
| 4637331 | Sail and sailing rig A sail and sailing rig smoothes the flow of air past a conventional mast and onto the sail, thereby enhancing the power of the sail. The sail includes a sail body having a mast-enveloping portion located at its luff in the form of a sleeve or a plurality ... | 01/20/1987 |
| 4593638 | Arrangement and method for achieving an aerodynamic mast profile for sailcraft An arrangement is disclosed which secures the sail to the mast of a sailing craft to achieve an aerodynamic profile about the mast while allowing curvature in the mast for optimum sail profile. The arrangement includes an outer profile sleeve of flexible ... | 06/10/1986 |
| 4369726 | Sailboat mast A sailboat mast is composed of two portions, a forward portion supported on the hull by standing rigging and having a concave aft side, and an aft portion, which may be of circular cross-section, supported close to and in line with the forward portion at ... | 01/25/1983 |
| 4149482 | Aerodynamic mainsail and furling device A sleeve is rotatably mounted on the hull of a vessel on a generally vertical axis and contains and completely supports the mainsail rollably furled or partly furled about a generally vertical axis. The sleeve is aerodynamically formed with a forward curv... | 04/17/1979 |
