# US 5,347,094 A · Elevator shaftway intrusion device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,347,094 A - Document ID: US5347094A - Status: Granted - Kind: A - Application number: 08/057,339 - Filed: 1993-05-04 - Granted: 1994-09-13 - Earliest claimed: 1990-01-09 - Assignees: TOC Holding Copmany of New York, Inc. - Inventors: Richard J. Leone; Robert F. Cummins; Joseph Vitiello; Thomas Brochhagan - Web page: https://patentgrep.com/patent/US5347094A ## CPC - B66B 5/0031: {for safety reasons} - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract There is provided an elevator shaftway intrusion detector which utilizes a proximity detector including an energy source for generating a detection field within a zone of detection including the elevator shaft-side roof and floor and a corresponding receiver for receiving the detection field when an object enters the detection zone and thereafter generating a detection signal. A power supply and switching network are employed for applying power from the power supply to the proximity detector and which are responsive to the detection signal for applying power from the power supply to a detection indicator such as a siren. ## Claims ### Claim 1 A detection system for detecting intrusion into an elevator shaft having an elevator cab therein and a plurality of elevator shaft access ways in at least one wall of said shaft comprising: an intrusion detector mounted at a location within said shaft above the elevator cab for monitoring an energy field in a zone of detection including at least a portion of the elevator shaft proximate the top of said cab, or mounted at a location within said shaft below said elevator cab for monitoring an energy field in a zone of detection including at least a portion of the elevator shaft proximate the bottom of said cab, said intrusion detector providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection, a power supply for supplying power to said system, a detection indicator responsive to said detection signal for generating a first audible signal, and a battery back-up means for providing power to said detection system in the absence or interruption of said power from said power supply means. ### Claim 2 (depends on 1) The detection system according to claim 1 further comprising charging circuit means for charging said battery back-up means. ### Claim 3 (depends on 2) The detection system according to claim 2 further comprising: means for arming and disarming said detection system, and means for delaying activation of said detection system following arming. ### Claim 4 (depends on 1, 2) The detection system according to claims 1 or 2 where said battery back-up means provides battery power to an audible signal generation means in the absence or interruption of power from said power supply means, thereby generating a second audible signal. ### Claim 5 (depends on 4) The detection system according to claim 4 wherein said first audible signal differs qualitatively from said second audible signal. ### Claim 6 (depends on 4) The detection system according to claim 4 further comprising means for arming and disarming said detection system. ### Claim 7 (depends on 6) The detection system according to claim 6 wherein said means for arming and disarming said detection system comprises a key switch. ### Claim 8 (depends on 7) The detection system according to claim 7 wherein said audible signal generating means produces an audible signal when said detection system is disarmed. ### Claim 9 (depends on 6) The detection system according to claim 6 wherein said audible signal generating means produces an audible signal when said detection system is disarmed. ### Claim 10 (depends on 6) The detection system according to claim 6 further comprising means for delaying activation of said detection system following arming. ### Claim 11 (depends on 7) The detection system according to claim 7 further comprising means for delaying activation of said detection system following arming. ### Claim 12 (depends on 8) The detection system according to claim 8 further comprising means for delaying activation of said detection system following arming. ### Claim 13 (depends on 9) The detection system according to claim 9 further comprising means for delaying activation of said detection system following arming. ### Claim 14 (depends on 12) The detection system according to claim 12 further comprising means for communicating said detection signal to sources external to said detection system. ### Claim 15 (depends on 14) The detection system according to claim 14 wherein said external source is an elevator safety system. ### Claim 16 (depends on 15) The detection system according to claim 15 wherein said intrusion detector further comprises source means for generating said energy field in said zone of detection. ### Claim 17 (depends on 16) The detection system according to claim 16 wherein said energy field is an electromagnetic field. ### Claim 18 (depends on 16) The detection system according to claim 16 wherein said energy field is a sonic field. ### Claim 19 (depends on 17) The detection system according to claim 17 wherein said electromagnetic field comprises electromagnetic energy in the infrared frequency band. ### Claim 20 (depends on 17) The detection system according to claim 17 wherein said electromagnetic field comprises electromagnetic energy in the radio frequency band. ### Claim 21 (depends on 17) The detection system according to claim 17 wherein said electromagnetic field comprises electromagnetic energy in the microwave frequency band. ### Claim 22 (depends on 18) The detection system according to claim 18 wherein said sonic field comprises sonic energy in the ultrasonic frequency band. ### Claim 23 (depends on 19) The detection system according to claim 19 wherein said first audible signal differs qualitatively from said second audible signal. ### Claim 24 A detection system for detecting intrusion into an elevator shaft having an elevator cab therein and a plurality of elevator shaft access ways in at least one wall of said shaft comprising: an intrusion detector mounted at a location within said shaft above the elevator cab for monitoring an energy field in a zone of detection including at least a portion of the elevator shaft proximate the top of said cab, or mounted at a location within said shaft below said elevator cab for monitoring an energy field in a zone of detection including at least a portion of the elevator shaft proximate the bottom of said cab, said intrusion detector providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection, a power supply for supplying power to said system, a detection indicator responsive to said detection signal for generating a first audible signal, and means for arming and disarming said detection system. ### Claim 25 (depends on 24) The detection system according to claim 24 wherein said means for arming and disarming said detection system comprises a key switch. ### Claim 26 (depends on 24, 25) The detection system according to claim 24 or 25 further comprising means for generating a second audible signal when said detection system is disarmed. ### Claim 27 (depends on 24, 25) The detection system according to claim 24 or 25 further comprising means for delaying activation of said detection system following arming. ### Claim 28 (depends on 26) The detection system according to claim 26 further comprising means for delaying activation of said detection system following arming. ### Claim 29 (depends on 26) The detection system according to claim 26 wherein said first audible signal differs qualitatively from said second audible signal. ### Claim 30 A detection system for detecting intrusion into an elevator shaft having an elevator cab therein and a plurality of elevator shaft access ways in at least one wall of said shaft comprising: an intrusion detector mounted at a location within said shaft above the elevator cab for monitoring an energy field in a zone of detection including at least a portion of the elevator shaft proximate the top of said cab, or mounted at a location within said shaft below said elevator cab for monitoring an energy field in a zone of detection including at least a portion of the elevator shaft proximate the bottom of said cab, said intrusion detector providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection, a power supply for supplying power to said system, a detection indicator responsive to said detection signal for generating a first audible signal, and means for communicating said detection signal to sources external to said detection system.