Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 4963814 | Regulated bifurcated power supply A regulated power supply employs two separate sources of power which are serially connected by a variable impedance element, such as a transistor, connected between the two power sources. Output voltage of the power supply is equal to the sum of the indiv... | 10/16/1990 |
| 4843535 | Switching power supply The invention relates to a switching power supply with a battery branch circuit provided for an emergency power supply, which can, similar to the primary circuit, be switched on in case of an emergency, by a switching transistor (13, 43). The battery bran... | 06/27/1989 |
| 4782245 | Connecting and switching apparatus with selectable connections A connecting and switching module employs a common type of connector for use with a plurality of types of interconnected systems by providing an adapter having a plug mateable with a common type of connector at one end, and a connector adapted to the syst... | 11/01/1988 |
| 4740914 | Address generator An address generator which provides addresses for machine storage and software retrieval of computer status information. A counter is used to generate address signals in a descending order until it is disabled by a computer during alarm conditions. Under ... | 04/26/1988 |
