Thermal sensor for detection of potential mechanical failures and transmission of temperature warning signals
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United States of America Patent
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-
Aug 1, 1995
Grant Date -
N/A
app pub date -
Jun 9, 1994
filing date -
Jun 9, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A frequency generating circuit and a cap-freeing mechanism in a bolt are responsive to a longitudinal movement of a piston in response to overheating of an associated bearing. The cap-freeing mechanism transfers a force from the piston to a cap, thereby freeing the cap from a head portion of the bolt and allowing an antenna to extend to the outside of the bolt. The frequency generating circuit is activated by a connection made between a switch and a battery of the circuit by the piston. Upon becoming activated, the frequency generating circuit sends a predetermined frequency or frequency pattern through the antenna.
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