Abstract: A lock system for a door. The lock system includes a clutch mechanism and a lockset with a lockable latch and actuator for operating the latch. The clutch mechanism includes an input cam, an output cam, and an engagement pin having an axis and being dimensioned and configured for axial movement between a first position, in which the engagement pin engages both the input and output cams so that the input and output cams rotate synchronously, and a second position, which allows independent rotational movement of the input cam and the output cam.

Abstract: A wireless access system is provided that includes a wireless exit kit (“WEXK”) having a panic bar and a door position sensor. The WEXK is mounted on a door or other access point. The WEXK also includes a wireless transceiver for transmitting a signal from the access point to a panel interface module and eventually to an access control panel. The WEXK monitors the panic bar and door position sensor. The panic bar is user-actuatable and, when actuated, causes a request-to-exit signal to be transmitted to the transceiver. If the transceiver receives an indication from the door position sensor that the door is open and no request-to-exit signal has been received, then the transceiver generates an alarm. Conversely, if the transceiver has receivd a request-to-exit signal from the panic bar, no alarm is generated.

Abstract: In an access control system, a method and system for conserving battery life comprising an electronic control processor in a motor-driven locking subsystem for measuring samples of back electromotive force from a DC motor within the motor-driven locking subsystem. The samples of the back electromotive force are summed by the electronic control processor to form a comparison parameter value. The comparison parameter value is compared to a pre-determined threshold value to form a decision parameter. An action is taken by the electronic control processor in the motor-driven locking subsystem based on the decision parameter. This action comprises one of commanding the battery source in the motor-driven locking subsystem to increase the voltage level to the motor, generating a fail signal, or detecting and indicating a lock or unlock condition.

Abstract: An access control system having an energy-saving optical presence sensor system is provided. The access control system includes a relatively lower operating power object presence sensor system for optically sensing the presence of a token as well in addition to a relatively higher operating power token reader for reading the token. The token reader remains unpowered until a token is detected by the object presence sensor system, which is preferably always powered. Once an object is detected by the object presence sensor system, power is supplied to the token reader and the token is read. After the token has been read, power ceases to be applied to the token reader, although the object presence sensor remains powered.

Abstract: A control system is for a lock of a door movably disposed within a frame and having a latch engageable with the frame, an interior handle connected with the latch and an exterior handle connectable with the latch. A connective mechanism is configured to releasably connect the exterior handle with the latch and an input device is configured to generate an unlock signal. A controller is coupled with the input device and configured to operate the connective mechanism such that the mechanism connects the exterior handle with the latch. The controller is selectively operable in a standard mode where the controller operates the mechanism when the controller receives the unlock signal and a lockdown mode where the controller does not operate the mechanism when receiving the unlock signal. A lockdown-input device coupled with the controller is configured to generate a lockdown signal to switch the controller to the lockdown mode.

Abstract: One aspect of the disclosed embodiment is a method and system for conserving battery life in a wireless access control system. This disclosed embodiment comprises a wireless access control system with a lock having an electronic controller and a piezo electronic driven locking mechanism. The electronic controller controls voltage to the piezo electronic locking mechanism. These and other features of the disclosed embodiment are discussed in the following detailed description of the disclosed embodiment.

Abstract: A door security system for controlling access through a door of a secured area by controlling a lock status of an associated locking unit of the door. The system includes an operator that operates the locking unit of the door, a key pad, a magnetic card reader, and a contact activatable data port. A data processor is responsive to the magnetic card reader, the data port, and the keypad for controlling the operator. Each of the keypad, the magnetic card reader, and the contact activatable data port can manipulate the lock status of the locking unit of the door. The data processor further comprises link means for requiring multiple entries for implementing the lock status of the door.

Abstract: An electronic door security system employs an input console having three readers for enhanced security. A microprocessor processes inputs applied at each of the readers to selectively permit access through a secured door. Application of an input to any of the readers transforms the controller from a sleep mode to an active mode.