Registers – Platform operated – Platform actuated traffic counters
Patent
1979-07-19
1981-12-29
Thesz, Joseph M.
Registers
Platform operated
Platform actuated traffic counters
235 92TF, 340 52R, 340669, G06M 312
Patent
active
043084524
ABSTRACT:
A method of and apparatus for monitoring the operation of a vehicle comprises sensing means in the form of one or more mercury-containing capsules to sense whether accelerative forces acting on the vehicle in the plane of movement of the vehicle exceed or are less than a predetermined value, a pulse generator operative in response to the sensing means to generate a number of pulses at predetermined intervals when the accelerative forces exceed the predetermined value, an additive memory operative in response to the pulse generator to generate a pulse count representative of the length of time for which the accelerative forces have exceeded the predetermined value, a timer operative to be triggered in response to the sensing means when the accelerative forces exceed the predetermined value, a comparator operative in response to the additive memory and the timer to compare the first signal with a predetermined signal a predetermined period of time after triggering of the timer, and a recorder operative in response to the comparator to make a recording when the first signal is less than said predetermined signal, and not to make a recording when the signal is equal to the predetermined value.
REFERENCES:
patent: 2574361 (1951-11-01), Vincent
patent: 3206116 (1965-09-01), Short
patent: 3769844 (1973-11-01), Skoures
patent: 3885324 (1975-05-01), Davenport et al.
patent: 3946359 (1976-03-01), Henderson
patent: 4092633 (1978-05-01), Fletcher et al.
patent: 4093939 (1978-06-01), Mitchell
patent: 4101869 (1978-07-01), Henderson
Flocks Karl W.
Starobin A. Fred
Thesz Joseph M.
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