Lock input device for a security system

• US 7,872,577 B2
• Filed: 10/05/2005
• Issued: 01/18/2011
• Est. Priority Date: 10/05/2004
• Status: Active Grant

• Current Assignee: Harrow Products (Delaware) LLC (Allegion PLC)
• Original Assignee: Harrow Products (Delaware) LLC (Allegion PLC)
• Inventors: Frolov, George
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US11/664,760
• Publication Number:
  US 20090027197A1
• Time in Patent Office: 1,931 Days
• Field of Search: 340/540, 340/541, 340/542, 340/426.15, 340/426.36, 340/5.32, 340/5.62, 701/07, 702/57, 702/781, 702/787, 292/144, 292/162, 292/165
• US Class Current: 340/542
• CPC Class Codes: E05B 2045/0695 Actuation of a lock triggering an alarm system, e.g. an alarm system of a building
• CPC Class Codes: E05B 2047/0026 Clutches, couplings or braking arrangements
• CPC Class Codes: E05B 2047/0068 Door closed
• CPC Class Codes: E05B 45/06 Electric alarm locks E05B45/005 takes precedence
• CPC Class Codes: E05B 47/0006 having a non-movable core; with permanent magnet
• CPC Class Codes: E05B 47/0012 with rotary electromotors actuators with rotary electromotors per se H02K7/06, H02K23/68
• CPC Class Codes: E05B 47/0692 with a rectilinearly moveable coupling element
• CPC Class Codes: Y10T 70/5978 With switch

Abstract

A security system for monitoring a door movably disposed within a frame a lock adjustable between a locked configuration and an unlocked configuration and a lock sensor configured to generate a signal when the lock adjusts to the unlocked configuration. A door sensor is configured to generate a signal when the door displaces with respect to the frame and an alarm device is configured to provide an alarm. A control is coupleable with the lock and door sensors and is switchable between armed and disarmed modes. The control is configured to operate in the armed mode such that the control activates the alarm when the control receives the door sensor signal prior to a receipt of the lock sensor signal. Alternatively, the control switches to the disarmed mode when the control receives the lock sensor signal prior to a receipt of the door sensor signal.

Claims

1. A security system for monitoring at least one door, the door being movably disposed within a frame, the security system comprising:

a lock adjustable between a first configuration at which the lock secures the door within the frame and a second configuration at which the door is displaceable with respect to the frame;

a lock sensor configured to generate a signal when the lock adjusts from the first configuration to the second configuration;

a door sensor configured to generate a signal when the door displaces with respect to the frame;

an alarm device configured to provide an alarm; and

a control coupleable with the lock sensor and with the door sensor, switchable between an armed mode and a disarmed mode, and configured to operate in the armed mode such that the control activates the alarm device when the control receives the door sensor signal prior to a receipt of the lock sensor signal and alternatively switches to the disarmed mode when the control receives the lock sensor signal prior to a receipt of the door sensor signal.

2. The security system as recited in claim 1 wherein the control is configured to operate in the disarmed mode such that the alarm device remains inactive when the control unit receives the door sensor signal.

3. The security system as recited in claim 1 wherein:

the lock includes a moveable member displaceable between first and second positions when the lock adjusts from the first configuration to the second configuration; and

the lock sensor is disposed on the door and is configured to sense displacement of the moveable member.

4. The security system as recited in claim 3 wherein the moveable member includes at least one of a bolt, a latch, a spindle, a handle and a clutch member.

5. The security system as recited in claim 3 wherein the lock sensor includes:

a motion sensor configured to generate an electrical signal when the moveable member displaces; and

a transmitter electrically coupled with the motion sensor and configured to generate and transmit an electromagnetic signal corresponding to the lock sensor signal when the transmitter receives the motion sensor electrical signal.

6. The security system as recited in claim 5 wherein the motion sensor includes one of a switch, a potentiometer, magnetic position sensor, a capacitive displacement sensor, a variable differential transducer, an infrared sensor, and a light beam sensor.

7. The security system as recited in claim 3 wherein:

the moveable member includes a bolt slidably disposed within the door and displaceable between an extended position in which the bolt is engaged with the frame and a retracted position in which the bolt is nonengaged with the frame; and

the lock sensor includes a switch disposed on the door and adjustable between open and closed configurations when the bolt displaces between the extended and retracted positions and a transmitter disposed on the door, coupled with the switch, and configured to transmit an electromagnetic signal corresponding to the lock signal when the switch is adjusted between the open and closed configurations.

8. The security system as recited in claim 1 wherein:

the lock includes a moveable member displaceable between first and second positions when the lock adjusts from the first configuration to the second configuration, an actuator configured to displace the moveable member between the first and second positions, and a controller configured to operate the actuator; and

the lock sensor is disposed on the door and is configured to generate a signal when the lock controller operates the actuator.

9. The security system as recited in claim 8 wherein the lock sensor includes:

a relay electrically coupled with at least one of the lock controller and the actuator and configured to generate an electrical signal when the controller operates the actuator; and

a wireless transmitter electrically coupled with the relay and configured to generate and transmit an electromagnetic signal corresponding to the lock sensor signal when transmitter receives the relay electrical signal.

10. The security system as recited in claim 8 wherein:

the lock moveable member includes one of a bolt, a latch, a spindle, a handle and a clutch member; and

the actuator includes one of an electric motor and a solenoid.

11. The security system as recited in claim 1 wherein:

the lock includes an electromagnet adjustable between a powered state at which the door is magnetically secured to the frame and an unpowered state at which the door is displaceable with respect to the frame; and

the lock sensor is configured to sense when the electromagnet adjusts from the powered state to an unpowered state.

12. The security system as recited in claim 11 wherein the lock sensor includes:

a switch electrically coupled with the magnet and configured to generate an electrical signal when the electromagnet adjusts from the powered state to the unpowered state; and

a transmitter electrically coupled with the switch and configured to transmit an electromagnetic signal corresponding to the lock sensor signal when the transmitter receives the switch signal.

13. The security system as recited in claim 1 wherein the door sensor includes:

a switch configured to generate an electrical signal when the door displaces with respect to the frame; and

a transmitter electrically coupled with the switch and configured to transmit to the control an electromagnetic signal corresponding to the lock sensor signal when the transmitter receives the switch signal.

14. The security system as recited in claim 1 further comprising:

a wireless transmitter coupled with the lock sensor and configured to receive the lock sensor signal and to generate and transmit an electromagnetic signal corresponding to the lock signal; and

a wireless receiver coupled with the control and configured to receive the lock electromagnetic signal, to generate an electrical signal corresponding to the lock sensor signal, and to transmit the electrical signal to the control.

15. The security system as recited in claim 1 wherein the alarm device includes at least one of:

a siren configured to generate an audible alarm;

a switch coupled with at least one light device and configured to activate the light device; and

a communication device configured to contact security personnel.

16. The security system as recited in claim 1 wherein the control includes:

a microprocessor coupleable with the door and lock sensors and coupled with the alarm device;

and a receiver coupled with the microprocessor and configured to receive each one of the lock and door signals and to transmit each signal to the microprocessor.

17. The lock assembly as recited in claim 1 wherein the lock sensor includes a wireless transmitter configured to transmit an electromagnetic signal to the control.

18. The security system as recited in claim 1 wherein:

the lock includes a moveable member displaceable between first and second positions when the lock adjusts from the first configuration to the second configuration; and

the lock sensor is configured to sense displacement of the moveable member.

19. The security system as recited in claim 1 wherein:

the lock includes a moveable member displaceable between first and second positions when the lock adjusts from the first configuration to the second configuration, an actuator configured to displace the moveable member between the first and second positions, and a controller configured to operate the actuator; and

the lock sensor is configured to generate a signal when the lock controller operates the actuator.