초록 ▼

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 activ

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.

대표청구항 ▼

[ What is claimed is:] [1.] A gate alarm system which comprises:(a) a gate to protect personnel from falling from a work platform comprising a cable having a first gate end adjacent to a first support and a second gate end adjacent to a second support and extending generally between said first suppo

[ What is claimed is:] [1.] A gate alarm system which comprises:(a) a gate to protect personnel from falling from a work platform comprising a cable having a first gate end adjacent to a first support and a second gate end adjacent to a second support and extending generally between said first support and said second support during a gate closed position, at least a portion of said cable capable of being positioned to a gate open position and capable of being returned to the gate closed position;(b) a gate alarm means comprising:(i) a gate alarm housing mounted to said first support;(ii) a switch within said gate alarm housing;(iii) a switch activating means within said gate alarm housing for activating said switch;(iv) a biasing means for biasing said switch activating means toward said switch during the gate open position;(v) an alarm means operably mounted to said gate alarm housing and electrically connected to said switch for signaling when said gate is in the gate open position; and(vi) a power source for said alarm means and electrically connected to said switch; and(c) gate entry means on said gate for establishing a gate open position to allow biasing said switch activating means towards said switch and thereby activating said switch.