Electricity: motive power systems – With signals – meters – recorders or testing devices
Patent
1977-08-08
1981-02-17
Smith, Jr., David
Electricity: motive power systems
With signals, meters, recorders or testing devices
318311, 318449, H02P 308
Patent
active
042517591
ABSTRACT:
A monitor for detecting the relative velocity between a moving body or surface and a fixed body or surface includes a sensor having an actuator member, such as a wheel having magnetic pole pieces embedded therein and mounted for rotation proportional to the relative velocity between the two bodies or surfaces, and a pick-up member such as a coil or inductor, mounted adjacent the actuator for producing an electrical signal in response thereto. An electric circuit is connected to the pick-up member to receive the electrical signals therefrom and produce a plurality of indication signals in response thereto, including indication signals corresponding to the relative velocity being at or below one or more predetermined levels. The monitor also includes a plurality of indicators connected to the circuit and responsive to the indication signals therefrom, such as lights or audible alarms. In a preferred embodiment, the indicators also include an indicator such as a meter to provide a continuous indication of the proportion which the relative velocity bears to a desired value of the relative velocity.
REFERENCES:
patent: 2718631 (1955-09-01), Peck
patent: 3411055 (1968-11-01), Carter et al.
patent: 3732477 (1973-05-01), Cicatelli
patent: 3809985 (1974-05-01), Krause et al.
patent: 3845375 (1974-10-01), Stiebel
patent: 4025832 (1977-05-01), Jones
patent: 4063112 (1977-12-01), Dumbeck
Agridustrial Electronics, Inc.
Smith Jr. David
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