Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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US Patent 4520299 - Turning speed controller for electric vehicles having dual drive motors
US Patent Issued on May 28, 1985
Estimated Patent Expiration Date:
December 22, 2003Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
December 22, 2003Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractThe invention disclosed provides a control system for an electric vehicle which automatically slows the vehicle during a turn and causes it to be increasingly slowed as the sharpness of the turn increases. The invention includes means for regulating the field excitation in accordance with a field regulating signal; means providing an armature current indicative signal; means providing a turning angle signal which is indicative of the turning angle of the vehicle; and a field excitation selector which receives the armature current indicative signal and the turning angle signal and then selects one or the other or a minimum reference value as the field regulating signal. The signal which produces the maximum field excitation is thus automatically selected. If a turning maneuver is being carried out, the turning angle signal increases until, at some point, the field excitation becomes a function of the steering angle and the vehicle is then automatically slowed as a function of the sharpness of the turn. | InventorAssigneeApplicationNo. 06/564573 filed on 12/22/1983US Classes:318/587, Land vehicles180/6.28, Electrical180/6.5, Electrical318/82Armature or primary circuit controlField of Search318/82Armature or primary circuit controlExaminersPrimary: Witkowski, S. J.Assistant: Ro, Bentsu Attorney, Agent or FirmUS Patent References3720863, 4166238, Control system for dual-motor driveIssued on: 08/28/1979 Inventor: Binner4196785, All-electric A.C. tractor Issued on: 04/08/1980 Inventor: Downing, Jr.4264851, System for controlling the direction and speed of a steerable locomotive Issued on: 04/28/1981 Inventor: Paramythioti , et al.4449598Method and apparatus for steering a vehicle with fixed-position wheels Issued on: 05/22/1984 Inventor: Hones , et al. International ClassesB62D 11/04 (20060101)B62D 11/02 (20060101) |
