Communications: electrical – Selective – Having indication or alarm
Patent
1974-06-07
1977-05-17
Curtis, Marshall M.
Communications: electrical
Selective
Having indication or alarm
23515027, 340 24, 340324A, G06F 1548
Patent
active
040244938
ABSTRACT:
Apparatus for tracking motor vehicle position relative to a starting point and for providing continual display of vehicle position. The apparatus includes a gyroscope and odometer for generating respective direction and distance electrical signals which are then converted to x and y deflection voltages for control of a cathode ray oscilloscope. An area map overlay may be included on the face of the oscilloscope; and, the position indication signals may be continually transmitted to a central location to provide reference indication as to a particular motor vehicle.
REFERENCES:
patent: 2728065 (1955-12-01), Hollman
patent: 3190950 (1965-06-01), Ariessohn et al.
patent: 3400364 (1968-09-01), Musgrave et al.
patent: 3789198 (1974-01-01), Henson et al.
patent: 3845289 (1974-10-01), French
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