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 |
| 8015858 | Electric radiator cap pressure tester The present invention a portable universal electric radiator cap pressure tester, having a multiple of common radiator cap filler necks fixed on a dash board. The fixed filler necks simulate the filler neck openings on a vehicle's radiator or overflow reservoir. Thi... | 09/13/2011 |
| 7454956 | Heat exchanger leak detection using mass gas flow metering Apparatus and methods for detecting leaks in a heat exchangers use mass gas flow metering. A regulated gas supply passes through a mass flow meter before entering either the product chamber or media chamber of a heat exchanger. The regulated gas supply passes into t... | 11/25/2008 |
| 7222742 | Cap structure for a radiator used in vehicle A cap structure for a radiator used in vehicle is disclosed. The cap includes a main cap body, a connector shaft, and a leak-seal seat. The main cap body includes a metallic cap body and a heat-isolation covering body joined together using screw as a body. The conne... | 05/29/2007 |
| 7134454 | Cap for blocking a pipe A cap for blocking a pipe. The pipe has a rim at an end thereof. The rim defines a pipe aperture. The cap includes a body for blocking the pipe aperture, the body including a bore having a threaded bore portion. A latch is movably mounted on the body for movement be... | 11/14/2006 |
| 6655193 | Leakage detecting device for cylinders of a vehicle engine A leakage detecting device has a cover, a first cup and a second cup. The cover is mounted on the opening of the water tank and has a through hole. The first cup is connected to the cover and communicates with the through hole in the cover. A tortuous air... | 12/02/2003 |
| 5324114 | Temperature and pressure sensor for cooling systems and other pressurized systems A device for monitoring the temperature and pressure of a liquid coolant in a cooling system having a sealant which seals around a needle from a pressure or temperature probe and re-seals itself upon removal of the needle. The sealant is fitted within an ... | 06/28/1994 |
| 5295747 | Temperature and pressure sensor for cooling systems and other pressurized systems A device for monitoring the temperature and pressure of a liquid coolant in a cooling system having a sealant which seals around a needle from a pressure or temperature probe and re-seals itself upon removal of the needle. The sealant is fitted within an ... | 03/22/1994 |
| 5069062 | Fluid dam and pressure tester apparatus and method of use An apparatus connectable to fluid containing operating systems which creates a vacuum effect upon the fluid in the operating system during repairs and maintenance. The apparatus also permits pressure testing of the repairs and maintenance to the operating... | 12/03/1991 |
| 4809542 | Leak testing device for pressure vessels A removable leak testing device for pressure vessels is disclosed. The leak testing device has a base member which overlies the open top of the inlet of the pressure vessel and has a pair of pivotally mounted latches which are mounted on opposite sides of... | 03/07/1989 |
| 4679424 | Pressure tester cap A pressure tester cap is provided and consists of an air valve sleeve which further houses a conventional SCHRADER.RTM. type air valve, and is incorporated within a pressurized radiator cap which when mounted on a neck of a radiator of a motor vehicle, pe... | 07/14/1987 |
| 4342220 | Engine testing method and apparatus A method of testing an engine aftercooler without removing it from the engine, the method including the steps of exposing the air inlet of the aftercooler, applying a gas under a superatmospheric pressure to the air chamber of the aftercooler, maintaining... | 08/03/1982 |
