Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6675650 | Automotive display A tachyometric display for automotive engines comprising a display head defining a circular display field. The field comprises a plurality of concentric circular bands having a quiescent state in which all of the bands are of the same illumination level a... | 01/13/2004 |
| 6655209 | Automotive meter having illuminated pointer A pointer of a meter such as a speedometer for use in an automobile is so structured that it is observed as if its illuminated length extends upon turning on a key switch and as if its illuminated length is shortened upon turning off the key switch, there... | 12/02/2003 |
| 5736970 | Accelerometer method and apparatus for integral display and control functions Method and apparatus for detecting mechanical vibrations and outputting a signal in response thereto. An accelerometer package having integral display and control functions is suitable for mounting upon the machinery to be monitored. Display circuitry pro... | 04/07/1998 |
| 5719554 | Automobile erratic behavior monitoring apparatus A driving behavior monitoring system mountable within a vehicle and having a board member on which are mounted first and second accelerometer devices for measuring acceleration in mutually orthogonal directions. Each accelerometer device includes an arm m... | 02/17/1998 |
| 5517183 | Accelerometer method and apparatus for integral display and control functions Method and apparatus for detecting mechanical vibrations and outputting a signal in response thereto. Art accelerometer package having integral display and control functions is suitable for mounting upon the machinery to be monitored. Display circuitry pr... | 05/14/1996 |
| 5487303 | Speedometer capable of providing real-time speed pulse signals A speedometer capable of providing real-time speed signals, that can be combined with different functional devices and speed control units, to facilitate the automatic recording and controlling of the speed, thereby forming a multifunctional automatic mon... | 01/30/1996 |
| 5269187 | Automotive accelerometer An automotive straight line G-meter utilizes the input from a piezoresistive accelerometer to accurately measure and display both straight line forward and backward as well as lateral or side to side acceleration and deceleration of a vehicle. The automot... | 12/14/1993 |
| 4946242 | Optical part including integral combination of optical fiber and light emitting or receiving element and method of manufacturing the same An optical part for light transmission comprises a light conductor formed of a core of a transparent material and a clad of a material having a smaller refractive index than that of the core material, and a light emitting and/or receiving element, wherein... | 08/07/1990 |
| 4929943 | Marine compass rate-of-turn indicator An array of light emitting diodes in a circular arrangment are illuminated to indicate the discrete magnitude of rate-of-turn and the direction of turn. The number of diodes illuminated is indicative of the discrete magnitude of turn and the clockwise or ... | 05/29/1990 |
| 4882659 | Vacuum fluorescent display having integral backlit graphic patterns A vacuum fluorescent (VF) display having integral graphic patterns backlit by an alternate light source to produce emissive graphic images in substantially the same plane as the VF graphic patterns. The backlit graphic patterns are defined by patterned op... | 11/21/1989 |
| 4878387 | Automotive instrument An automotive instrument having a meter scale plate and an indicator lens which are arranged in a side-by-side fashion on the same display panel. A light-shielding projecting wall is provided on the rear side of the meter plate constituting the display pa... | 11/07/1989 |
| 4754644 | Variable-reluctance accelerometer An accelerometer comprising a permanent magnet which, when idle, is maintained dynamically balanced by virtue of magnetic fields acting on opposite sides in relation to its poles, and which is designed to travel along a respective guide. The accelerometer... | 07/05/1988 |
| 4713617 | Digital timing light Engine timing apparatus includes a timing light and a pickup for producing a pickup signal in response to each ignition in a selected cylinder. The operator keys in the desired advance or retard angle in degrees in a range anywhere between +180° and -180... | 12/15/1987 |
| 4622548 | Solid state electronic G-force indicator A G-force acceleration measuring instrument for use in an aircraft, spacecraft, submarine, or other vehicle, and employing electronic sensing and display transducers for increased reliability, small size, and small mass. The instrument includes a bar grap... | 11/11/1986 |
| 4353259 | Fiber optic acceleration sensor The deflection, due to inertia, of the free end of the cantilever rod of fiber optic material is an indication of the acceleration of the supporting structure of the rod. The indication of the deflection of the rod is by detecting light propagating the fr... | 10/12/1982 |
| 4352062 | Digital display type tachometer for an automobile A digital display type tachometer for an automobile for numerically displaying a rotation speed of the engine comprises a numeric character display device having display sections for 1000's, 100's, 10's and 1's digits, the 1's digit display section being ... | 09/28/1982 |
| 4326415 | Speed indicating apparatus for vehicles This invention relates to a speed indicating apparatus for a vehicle comprising a plurality of indicator lights and a speed counter, each said indicator lights mounted externally on the rear frame of the vehicle being connected to said speed counter by me... | 04/27/1982 |
| 4227416 | Speed indicating apparatus for automobile A speed indicating apparatus for an automobile comprising a plurality of indicator lights showing the travelling speed at all times, a half-circular magnet pivoted on a hand shaft of a speedometer in the automobile, a plurality of contact metal plates con... | 10/14/1980 |
| 4135405 | Rotation displaying device A rotation displaying device for displaying the rotating speed of an engine, especially, that of an agricultural machine such as a combine harvester, in colors classified by the low speed, standard speed and high speed. The device comprises a rotary shaft... | 01/23/1979 |
| 4041782 | Hood-mountable digital speedometer A digital speedometer includes analog-to-digital converter means which may be coupled to a speed-indicator of a vehicle-mounted speedometer for converting a position of the speed indicator into a binary number which is displayed, upon being converted into... | 08/16/1977 |
| 3987392 | Luminescent voltage indicator circuit A plurality of luminescent elements, such as light-emitting diodes, incandescent lamps or the like, are located adjacent each other, each connected to the output of a difference amplifier. The respective inputs of the difference amplifier are connected, o... | 10/19/1976 |
| 3933050 | Speed calculator An apparatus for measuring the velocity of a vehicle traveling between first and second measured points. The apparatus includes a cylindrical housing having an open top for receiving a transparent disk. Indicia representing speed calibrations is circumfer... | 01/20/1976 |
