Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1988-10-31
1990-01-30
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
324161, 340691, G08B 2100
Patent
active
048976350
ABSTRACT:
A synchronization indicator for a pair of rotating devices compares pulses generated by the two devices cyclically respectively pro-portional to their rotary speeds by using a predetermined count of one set of pulses to determine the then count of the other set and uses the count of the other set to cyclically provide a progressive indication of relative speed of the devices.
REFERENCES:
patent: 2232753 (1941-02-01), Wilson
patent: 4499760 (1985-02-01), Fischer et al.
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