Device for measuring and indicating the time between the recepti

Details Device for measuring and indicating the time between the recepti Device for measuring and indicating the time between the recepti

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

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