Elevator based security system

• US 5,749,443 A
• Filed: 05/12/1995
• Issued: 05/12/1998
• Est. Priority Date: 05/12/1995
• Status: Expired due to Fees

• Current Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Original Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Inventors: Romao, Ulisses G.
• Primary Examiner(s): NAPPI, ROBERT E
• Application Number:
  US08/440,435
• Time in Patent Office: 1,096 Days
• Field of Search: 187/380, 187/384, 187/392, 187/385
• US Class Current: 187/384
• CPC Class Codes: B66B 1/468 Call registering systems
• CPC Class Codes: B66B 2201/4676 for checking authorization of the passengers

Abstract

A security system for an elevator is disclosed that secures access to a landing by having the resident use a transmitter identifying the secured landing. In a building having a plurality of secured landings, the transmitter provides access to only one of the secured landings by emitting a signal that identifies only that secured landing. The emitted signal is received by a receiver and sent to a controller of the elevator system. In a particular embodiment, the elevator system includes a plurality of common landings and a plurality of private landings. Each transmitter provides access to all the common landings and only the particular private landing that corresponds to that transmitter.

Claims

1. An elevator security system for controlling access to a building having an elevator system, the elevator system having an elevator car, a plurality of landings, the elevator car providing access to the plurality of landings, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating each of the landings, the elevator security system including:

means for securing access to one or more of the plurality of landings;

a plurality of transmitters, each of the plurality of transmitters corresponding to one of the secured landings, and each of the plurality of transmitters providing access to only the corresponding secured landing of the plurality of secured landings by emitting a signal that provides access to only the corresponding secured landing;

a receiver that receives the signal, determines the corresponding secured landing authorized for access by the signal, and enters a request for the corresponding secured landing;

a switch for each landing having an on-position and an off-position, the on-position providing secured access such that the call button designating that particular landing may not be activated, the off-position providing open access such that the call button designating that particular landing may be activated; and

a timer that triggers an alarm after the expiration of a predetermined time period subsequent to the switch being placed into the off-position.

2. The elevator security system according to claim 1, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating each of the secured landings, and wherein the means for securing access to the secured landings includes means to block activation of the call buttons designating the secured landings.

3. The elevator security system according to claim 1, wherein each of the transmitters includes a button that upon actuation causes the transmitter to emit the signal providing access to the corresponding secured landing.

4. The elevator security system according to claim 1, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating the landings, wherein the landings include the plurality of secured landings and a common landing, the common landing being securable by the securing means, wherein each of the transmitters, upon a second actuation, emits a second signal providing access to the common landing, and wherein the receiver, upon receiving the second signal, unsecures the call button designating the common landing such that the call button designating the common landing may be activated.

5. The elevator security system according to claim 3, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating the landings, wherein the landings include the plurality of secured landings and a common landing, the common landing being securable by the securing means, wherein each of the transmitters includes a second button that upon actuation causes the transmitter to emit a second signal providing access to the common landing, and wherein the receiver, upon receiving the second signal, unsecures the call button designating the common landing such that the call button designating the common landing may be activated.

6. An elevator security system for controlling access to a building having an elevator system, the elevator system having an elevator car, a plurality of landings, the elevator car providing access to the plurality of landings, wherein the elevator system includes a car operating panel within the elevator car and having call buttons designating the landings, the elevator security system including:

means for securing access to one or more of the plurality of landings;

a transmitter corresponding to one of the secured landings and providing access to only the corresponding secured landing of the plurality of secured landings by emitting a signal that provides access to only the corresponding secured landing;

a receiver that receives the signal, determines the particular secured landing authorized for access by the signal, and enters a request corresponding to that particular landing;

a switch for the corresponding secured landing having an on-position and an off-position, the on-position providing secured access to the corresponding secured landing such that the call button designating the corresponding secured landing may not be activated, the off-position providing open access to the corresponding secured landing such that the call button for the corresponding secured landing may be activated; and

a timer that triggers an alarm after the expiration of a predetermined time period subsequent to the switch being placed into the off-position.

7. The elevator security system according to claim 6, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating each of the secured landings, and wherein the means for securing access to the secured landings includes means to block activation of the call buttons designating the secured landings.

8. The elevator security system according to claim 6, wherein the transmitter includes a button that upon actuation causes the transmitter to emit the signal providing access to the corresponding secured landing.

9. The elevator security system according to claim 6, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating the landings, wherein the landings include the plurality of secured landings and a common landing, the common landing being securable by the securing means, wherein the transmitter, upon a second actuation, emits a second signal providing access to the common landing, and wherein the receiver, upon receiving the second signal, unsecures the call button designating the common landing such that the call button designating the common landing may be activated.

10. The elevator security system according to claim 8, wherein the elevator system includes a car operating panel within the elevator car and having a plurality of call buttons designating the landings, wherein the landings include the plurality of secured landings and a common landing, the common landing being securable by the securing means, wherein the transmitter includes a second button that upon actuation emits a second signal providing access to the common landing, and wherein the receiver, upon receiving the second signal, unsecures the call button designating the common landing such that the call button designating the common landing may be activated.

11. A method to control access to a building having an elevator system, the elevator system having an elevator car, a plurality of landings, a receiver, and a wireless, hand-held transmitter, the elevator car providing access to the plurality of landings, wherein the elevator system further includes a car operating panel within the elevator and having call buttons corresponding to the landings, a switch for each landing having an on-position and an off-position, the on-position providing secured access such that the call button for that particular landing may not be activated, the off-position providing unsecured access such that the call button for that particular landing may be activated, the method including the steps of:

securing access to one or more of the plurality of landings;

providing access to one of the secured landings upon the receiver accepting a signal from the transmitter, the signal identifying the transmitter as being authorized for access to that particular landing

unsecuring access to the particular landing upon moving the switch into the off-position;

re-securing access to the particular landing upon the switch being replaced into the on-position; and

triggering an alarm upon the expiration of a predetermined time period subsequent to moving the switch into the off-position without replacing the switch into the on-position.