Capacitively coupled machine tool safety system
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United States of America Patent
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-
Jul 30, 1985
Grant Date -
N/A
app pub date -
Feb 2, 1982
filing date -
Feb 2, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A safety system for a machine tool is characterized by a capacitively coupled electric field generator (transmitter) and a capacitive receptor antenna. An electrical signal is induced in the capacitive receptor antenna by the action of the electric field. The magnitude of the induced signal is monotonically related to the distance between the electric field generator and the capacitive receptor antenna. When the magnitude of the electrical signal exceeds a predetermined threshold, a machine tool safety indicator is developed.
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