Elevator shaftway intrusion device
First 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 the 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 and for providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection.
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Accused Products
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.
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Citations
36 Claims
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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 the 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 and for providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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 the 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 and said wall of said shaft and for providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. 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 the shaft below the 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 and for providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. 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 the shaft below the 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 and said wall of said shaft and for providing a detection signal representing a disturbance in said energy field caused by an intruder in the shaft, entering said zone of detection. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
Specification