Patent Number: 6,297,735

Title: Locked shut down with remote monitoring of large equipment

Abstract: A lock for locking valve and electrical switch handles in the "off" position, which lock incorporates a radio transmitter for reporting status of the lock to a remote monitor. The lock has a cable which encircles the handle. The distal end of the cable is connected to the lock and is locked in place. A conductor of an alarm subcircuit passes through the cable, thereby detecting whether the cable has been cut. The monitor includes a radio receiver and a display for displaying status of the monitored lock. The invention optionally utilizes plural locks and plural monitors.

Inventors: Abel; Jerry (Calgary, Alberta, CA)


International Classification: E05B 45/00 (20060101); E05B 45/06 (20060101); E05B 045/06 ()

Expiration Date: 10/02/2018