Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-06-06
1999-05-04
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
49 13, 340540, 3405451, 3406911, G08B 1308
Patent
active
059008156
ABSTRACT:
A gate alarm system includes a gate of a wire or cable between supports, a gate entry and a gate alarm comprising a gate alarm housing, a switch, a switch activating device, a spring or coiled wire for biasing the switch activating device, an alarm, and a power source for the alarm. The switch activating device is maintained under compression by the spring or coiled wire during the gate closed mode and contacts the switch and sets off the alarm in the gate open mode when this compression is relaxed. The gate entry can range from a handle, a clasp and a loop to a handle, a combination of a threaded rod and tube, a clasp and loop. This very simple alarm system warns of unauthorized entrance to parking lots of commercial establishments, driveways to private dwellings, and roads or cart paths to farms and ranches; and to alert personnel of open gates in enclosures around unsafe areas such as wells or in construction and demolition sites.
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