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 |
| 7395705 | System for measuring an airflow angle at the wingtip of an aircraft A vortex angle system includes one or more vortex angle sensors disposed on one or more wingtips of an aircraft. A summing circuit and computer compare signals from each sensor to provide a signal, which is indicative of the average vortex angle of the aircraft.... | 07/08/2008 |
| 7085657 | Signal processing unit for a pressure switch or the like A signal processing unit for a pressure switch or the like, comprising a sensor element, such as a strain gauge bridge, to supply an analog electrical signal that corresponds to a pressure; a signal processing unit which is connected downstream of the sensor element... | 08/01/2006 |
| 6829929 | Loading probe for testing an acoustic transducer A loading probe includes an elongated solid first body portion (1) shaped from a first material and capable of simulating the normal acoustic impedance presented to a transducer to be tested by a medium in which the transducer is to operate and a second elong... | 12/14/2004 |
| 6526821 | Airfoil shaped flow angle probe The present invention is a force-based instrument that measures local flow angle. The preferred embodiment of the invention has a low aspect ratio airfoil member connected to a mounting base. Using a series of strain gauges located at the connecting porti... | 03/04/2003 |
| 5233867 | Lever-operated dynamic fluid flow sensing system A dynamic fluid flow measurement apparatus is intended to be connected to a relative reference member, such as a marine vessel. The apparatus preferably includes a base member, a lever mechanism movable relative to the base member for transmitting force c... | 08/10/1993 |
| 5186049 | Angular momentum and banking indicator acceleration-deceleration and grade indicator system Angular momentum and banking indicator and acceleration-deceleration and grade indicator for use on trucks, cranes, airplanes, and boats as a multipurpose sensor. A cylinder with a damping fluid includes four symmetrically spaced coils centered radially a... | 02/16/1993 |
| 5117687 | Omnidirectional aerodynamic sensor A method and apparatus are disclosed for detecting the nature of fluid flow. Specifically, an omnidirectional aerodynamic sensor is disclosed comprising an omnidirectional aerodynamic drag force inducing probe, a force transducer and a signal processor. T... | 06/02/1992 |
| 5115237 | Combination aircraft yaw/angle of attack sensor An improved aerodynamic vane is used for sensing the angle of attack of an aircraft during yawed flight. Left and right sensors are rotatably mounted to opposite sides of the fuselage of the aircraft and rotate in the air flow to a position indicative of ... | 05/19/1992 |
| 4603579 | Trolling speed indicator A trolling speed indicator adapted to be mounted to the gunnel of a boat along either a vertical or horizontal surface. The indicator measures the speed of the boat during trolling so that a fisherman can utilize the optimum lure size and weight. The indi... | 08/05/1986 |
| 4534307 | Adapter for installation of marine instruments An adapter assembly for surface mounting of marine instruments and the like through a constant diameter opening in a marine vessel surface and the like; including a cylindrical mount housing having a tapered annular end; an adapter member having a central... | 08/13/1985 |
