Abstract: An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.

Abstract: One embodiment of an electric door lock according to the present invention is interchangeable between fail safe and fail secure modes and comprises a housing for receiving the internal components of the door lock. A latch bolt is mounted within the housing and is movable from partially extending from and retracted into the housing. A doorknob is mounted to the housing and is rotatable to retract the latch bolt. A solenoid assembly is also mounted within the housing and can be interchangeably arranged to cause the lock to operate a fail secure mode wherein the doorknob is prevented from retracting the latch bolt when the solenoid is not energized, or a fail safe mode wherein the doorknob is allowed to retract the latch bolt when the solenoid is not energized. The solenoid is nested in place within the housing in both modes.

Abstract: One embodiment of an electric door lock according to the present invention is interchangeable between fail safe and fail secure modes and comprises a housing for receiving the internal components of the door lock. A latch bolt is mounted within the housing and is movable from partially extending from and retracted into the housing. A doorknob is mounted to the housing and is rotatable to retract the latch bolt. A solenoid assembly is also mounted within the housing and can be interchangeably arranged to cause the lock to operate a fail secure mode wherein the doorknob is prevented from retracting the latch bolt when the solenoid is not energized, or a fail safe mode wherein the doorknob is allowed to retract the latch bolt when the solenoid is not energized. The solenoid is nested in place within the housing in both modes.

Abstract: An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.

Abstract: An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.

Abstract: A lock having a sensor, the lock comprising a housing defining a chamber with a longitudinal axis. A latch mechanism is located within the chamber of the housing and is movable relative thereto in a direction transverse to the longitudinal axis between a retracted position wherein the latch mechanism is substantially within the housing, and an extended position wherein the latch mechanism extends at least partially outside of the housing. The latch mechanism at least partially comprises a ferrous material. A first switch mechanism fixed within the chamber, the latch mechanism ferrous material causing the first switch mechanism to activate in one transverse position of the latch mechanism and the first switch mechanism deactivated in another transverse position of the latch mechanism.

Abstract: One embodiment of an electric door lock according to the present invention is interchangeable between fail safe and fail secure modes and comprises a housing for receiving the internal components of the door lock. A latch bolt is mounted within the housing and is movable from partially extending from and retracted into the housing. A doorknob is mounted to the housing and is rotatable to retract the latch bolt. A solenoid assembly is also mounted within the housing and can be interchangeably arranged to cause the lock to operate a fail secure mode wherein the doorknob is prevented from retracting the latch bolt when the solenoid is not energized, or a fail safe mode wherein the doorknob is allowed to retract the latch bolt when the solenoid is not energized. The solenoid is nested in place within the housing in both modes.

Abstract: An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.

Abstract: One embodiment of an electric door lock according to the present invention is interchangeable between fail safe and fail secure modes and comprises a housing for receiving the internal components of the door lock. A latch bolt is mounted within the housing and is movable from partially extending from and retracted into the housing. A doorknob is mounted to the housing and is rotatable to retract the latch bolt. A solenoid assembly is also mounted within the housing and can be interchangeably arranged to cause the lock to operate a fail secure mode wherein the doorknob is prevented from retracting the latch bolt when the solenoid is not energized, or a fail safe mode wherein the doorknob is allowed to retract the latch bolt when the solenoid is not energized. The solenoid is nested in place within the housing in both modes.

Abstract: A push bar locking mechanism for locking and unlocking a door also comprising a push bar arranged integral to a bar frame such that the push bar can be moved relative to the bar frame. An elongated link is integral to the push bar and bar frame and is movable in response to the push bar movement relative to the bar frame. The movement of the elongated link causes a door locking mechanism to move between a locked and unlocked position. An electromagnetic locking mechanism is included that can be changed between an energized and de-energized state by an electrical signal, wherein the electrical locking mechanism generates a magnetic field when energized. An armature is also included in proximity to the electromagnetic locking mechanism and the elongated link. The armature prevents movement of the elongated link when the electromagnetic locking mechanism is energized.

Abstract: A lock with sensor comprises a housing defining a chamber and a latch mechanism located within the chamber of the housing. The latch mechanism is movable relative to the housing between a retracted position wherein the latch mechanism is substantially within the housing and an extended position wherein the latch mechanism extends at least partially outside of the housing. A sensor mechanism is provided and has a fixed switch portion located within the chamber and a movable switch activator portion, the switch activator portion being mounted so as to move with the latch mechanism and thereby activate and deactivate the switch portion respectively.

Abstract: A lock with sensor comprises a housing defining a chamber and a latch mechanism located within the chamber of the housing. The latch mechanism is movable relative to the housing between a retracted position wherein the latch mechanism is substantially within the housing and an extended position wherein the latch mechanism extends,at least partially outside of the housing. A sensor mechanism is provided and has a fixed switch portion located within the chamber and a movable switch activator portion, the switch activator portion being mounted so as to move with the latch mechanism and thereby activate and deactivate the switch portion respectively.

Abstract: A lock with sensor comprises a housing defining a chamber and a latch mechanism located within the chamber of the housing. The latch mechanism is movable relative to the housing between a retracted position wherein the latch mechanism is substantially within the housing and an extended position wherein the latch mechanism extends at least partially outside of the housing. A sensor mechanism is provided and has a fixed switch portion located within the chamber and a movable switch activator portion, the switch activator portion being mounted so as to move with the latch mechanism and thereby activate and deactivate the switch portion respectively.

Abstract: An improved door access bar for installation onto a door through which access is controlled by an electrically operated door access system is disclosed in which the door access bar has an electromechanically operable door locking mechanism which is used to selectively lock and unlock the door to thereby control access or egress through the door. The door access locking bar of the present invention incorporates an interlock mechanism to prevent the bolt from being forced into a retracted position by jimmying the locking mechanism to unlock the door. The locking mechanism of the present invention prevents the door from being opened until the electromechanical locking mechanism is operated to do so. The door access locking bar of the present invention operates in a fail-safe manner so that in the event of a power failure it will automatically be in an unlocked position.

Abstract: An electrically operable door lock apparatus is disclosed which may be installed on a door through which access is to be controlled by an electrically operable security system, whereby the door opening mechanism is selectively locked and unlocked by controlling the supply of electricity to the door locking mechanism to thereby control access or egress through the door. The electrically operable door lock apparatus uses an electromagnetic actuator to drive a locking member in reciprocating movement between a locked position in which it engages a latch actuating member to prevent it from being rotated to retract a latch bolt to open a door, and an unlocked position in which it is disengaged from the latch actuating member to allow it to be rotated to retract the latch bolt to open the door.

Abstract: An improved pressure-actuated control bar is disclosed which may be located on a door to control access or egress through the door, whereby the control bar is used to trigger unlocking or opening, or both unlocking and opening, of the door following pressure being exerted on the control bar by an individual desiring access or egress through the door. A comparator is used to determine whether pressure exerted on the control bar and sensed by a pressure-sensitive component with no moving parts is sufficient to trigger unlocking or opening, or both unlocking and opening, of the door. A second embodiment describes a push/pull door access handle which may be used on a handicapped-accessible door to initiate powered opening of the door when the handle is pulled, and to cause immediate cessation of the opening of the door when the handle is pushed.

Abstract: An improved pressure-actuated control bar is disclosed which may be located on a door to control access or egress through the door, whereby the control bar is used to trigger unlocking or opening, or both unlocking and opening, of the door following pressure being exerted on the control bar by an individual desiring access or egress through the door. A comparator is used to determine whether pressure exerted on the control bar and sensed by a pressure-sensitive component with no moving parts is sufficient to trigger unlocking or opening, or both unlocking and opening, of the door. A second embodiment describes a push/pull door access handle which may be used on a handicapped-accessible door to initiate powered opening of the door when the handle is pulled, and to cause immediate cessation of the opening of the door when the handle is pushed.

Abstract: A security system for use on doors which have an electrically operated door locking mechanism is disclosed, which security system is operative to provide a preset egress time delay following an effort to exit through the controlled door before actuating the door locking mechanism to unlock the door and allow egress. During the egress time delay, the system provides a visual input of the time remaining until the door locking mechanism will unlock the door to allow egress or access therethrough. In the preferred embodiment, a speech synthesizer and digital display is also utilized to inform the individual demanding egress or access of the delay, and to provide other information as desired.

Abstract: An improved electromagnetic coil assembly for use with an electromagnetic door locking mechanism is disclosed which electromagnetic coil assembly incorporates an improved housing construction allowing the electromagnetic coil assembly to be easily and conveniently installed in its operating position on the frame of the door utilizing the electromagnetic locking mechanism. The electromagnet core itself is made of a plurality of thin, flat electromagnet core laminations which are placed in a stacked array in a U-shaped channel member, with thin welds between the tops of the legs of the "U" and the side edges of the stacked electromagnet core laminations being used to maintain the configuration of the array.

Abstract: The lock strike device is used with closable openings and is electrically connectable to an electrical monitoring circuit so that the presence or absence of a latch or deadbolt in the device can be automatically detected. The device includes a strike box having spaced sidewalls and a closed rear end. The first sidewall and adjacent portion of the rear end define an elongated cutaway portion through which an elongated blade trigger is spring biased into the strike space. The trigger is hinged at its front end to a box connected to the front of the sidewall. The rear end of the trigger is a head which urges a spring loaded lever arm of an electrical switch mounted on the exterior of the housing rear end into an open circuit position. A movable tab extends transversely into the space from the trigger. The tab senses the presence of a latch to provide a signal to an indicator.