Horology: time measuring systems or devices – Controlled by a disparate device – Speed checker
Patent
1979-06-29
1981-01-13
Weldon, Ulysses
Horology: time measuring systems or devices
Controlled by a disparate device
Speed checker
368 3, 368 6, G04F 800
Patent
active
042453348
ABSTRACT:
A system for measuring and indicating the time required for a movement from a first location to a second location that is spaced from the first location, including a first transmitter located at the first location and adapted to transmit either an RF or an acoustical signal, a second transmitter located at the second location and then adapted to transmit a second acoustical or RF energy signal, a moving vehicle, such as a sports implement, designed to travel between the first and second locations and having a receiver with a sensing antenna, for receiving the first and second acoustical or RF energy signals. The receiver is connected by a start-switch and a stop-switch to an electronic stopwatch which is capable of delivering timed clock signals to a memory circuit. An electronic read-out display, such as a liquid crystal display, is connected to the memory circuit, so that as the vehicle travels past the first transmitter, the start-switch connected to the receiver will turn on the stopwatch to begin a count of the pulse train and, as the vehicle passes the second transmitter, the stop-switch will turn off the stopwatch and the display will provide the elapsed time for the movement between the first and second locations.
REFERENCES:
patent: 4075829 (1978-02-01), Goff
patent: 4078376 (1978-03-01), Freeman
Kelman Kurt
Weldon Ulysses
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