Communication system for transmitting RF signals representative of defects or hazards in a railway system having frangible glass activation
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United States of America Patent
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Oct 18, 1994
Grant Date -
N/A
app pub date -
Jul 15, 1993
filing date -
Jul 15, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A communication system for submitting RF signals responsive to the currents of defects or hazards in a railway system wherein a reserve cell ampule containing an electrolyte is disposed in one compartment of a housing and the electronic apparatus transmitting desired signals is disposed in a second compartment such that when the reserve cell is heated the pressure rises within the ampule to rupture it, whereby the electrolyte contained is dispersed in the first compartment and causes energization of electronic apparatus including an antenna connected to such apparatus, whereby the antenna is ejected from the housing and is able to broadcast suitable RF signals.
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