Registers – Platform operated – Platform actuated traffic counters
Patent
1975-10-17
1977-05-03
Thesz, Joseph M.
Registers
Platform operated
Platform actuated traffic counters
235 92DN, 235 92T, 235 92R, 235 92PE, G06M 302
Patent
active
040216470
ABSTRACT:
There is provided an electronic monitoring device for indicating when the stopping time or stopping distance of a brake adapted to stop the motion of the power press drive system exceeds a preselected time or distance. In accordance with one aspect of this device, there is provided means for creating a selected number of control pulses having a time spacing between successive control pulses inversely proportional to the rotational velocity of the press shaft, a digital counter having an input for counting pulses and means for starting the counter upon creation of a stop signal for the press, means for creating counting pulses having a known time base frequency, means for directing the counting pulse to the input of the digital counter, means for creating a first signal when the digital counter has counted to a selected number, means for creating a second signal when the time spacing of successive control pulses exceeds a preselected time and indicating means actuated upon creation of the first signal before creation of the second signal.
REFERENCES:
patent: 2447588 (1948-08-01), McNairn
patent: 2851596 (1958-09-01), Hilton
patent: 3158854 (1964-11-01), Keen et al.
patent: 3525044 (1970-08-01), Richmond
patent: 3673563 (1972-06-01), Thielen et al.
patent: 3708750 (1973-01-01), Bucks et al.
patent: 3865305 (1975-02-01), Sampey
Gulf & Western Industries, Inc.
Thesz Joseph M.
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