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 |
| 7278823 | Draft inducer blower A draft inducer blower for high efficiency furnaces, including a blower housing which facilitates maximum air flow efficiency through the blower housing while having an overall radial dimension which conforms to the industry standard arrangement of mounting holes on... | 10/09/2007 |
| 7210903 | Lobed joint draft inducer blower A draft inducer blower for high efficiency furnaces, including a blower housing which facilitates maximum air flow efficiency through the blower housing while reducing air flow noises. The blower housing generally includes a housing body and housing cover which defi... | 05/01/2007 |
| 7182574 | Draft inducer blower with fastener retention A draft inducer blower for high efficiency furnaces, including a blower housing having a housing body and housing cover. The housing body includes a plurality of mounting lugs spaced around its outer periphery, through which fasteners are inserted to secure the blow... | 02/27/2007 |
| 7128526 | Anti-reverse flow mechanism for centrifugal blowers A set of cooling air blowers for machines which require cooling air during operation. The blowers each include an outlet having an anti-reverse flow feature for preventing the flow of air into the blower from externally of the machine should the blower fail, thereby... | 10/31/2006 |
| 7109616 | Electric motor with hall effect memory module An electric motor with a Hall effect module. An endframe is attached to a motor housing to enclose one end of the motor housing. A cover is snap-fit onto the endframe externally of the motor housing, wherein resilient fingers on the endframe engage an arrangement of... | 09/19/2006 |
| 7071643 | Dual speed quad brush two pole motor system A motor system includes four brushes electrically connected to a rotor. A stator includes two magnetic poles. A circuit selectively rotates the rotor at a first speed by applying a first voltage to a first of the brushes and a second voltage to a second of the brush... | 07/04/2006 |
| 6908281 | Blower housing for furnace blower assembly A blower housing for a furnace blower assembly of the type including a blower motor coupled to an impeller for use in expelling exhaust gases from a furnace. The blower housing generally includes an inlet, an impeller cavity, and an extension portion extending from ... | 06/21/2005 |
