Abstract:
An electronic push retraction exit device includes a support rail, a push rail and a latch mechanism having a latch bolt operably connected to the push rail and movable between latched and unlatched positions. A control circuit in the exit device drives a linear actuator to retract and hold the push rail and the latch bolt in the unlatched position. The linear actuator preferably includes a stepping motor and is connected to the push rail through a lost motion connection allowing the exit device to be mechanically operated without moving the linear actuator. The control circuit preferably includes an electrical adjustment for the retraction distance of the latch bolt and an adjustable relatch timer. The exit device may be operated by a remote switch attached to a control connection, which may be permanently closed to simulate a prior art electrically operated exit device for compatibility with third party control systems.
Abstract:
A vertical panic exit device is interchangeably mountable on either left-hand opening or right-hand opening doors and comprises a latch mechanism for engagement with a strike mounted to a doorjamb to alternately transition a door mounted to the jamb in a latched and unlatched configuration. A central portion includes a push bar; an action rod interlinked to said push bar such that a depression of the push bar causes the action rod to be translated in a direction orthogonal to the push bar, and a center case mechanism movable between a latched and an unlatched position. The center case mechanism comprises a housing, and a main link carriage horizontally slidably mounted within the housing. The main link carriage is linked to and is acted upon by the action rod for translation between the latched and unlatched position. An actuator link has a first end pivotally attached to the main link carriage. A pivoting member is pivotally mounted to the housing and has first and second pivotal attach points. A second end of the actuator link is selectively coupled to one of either the first or second attach points. When the second end of the actuator link is selectively coupled to the first attach point, it configures the center case mechanism for latching and unlatching a right handed opening door, and when selectively coupled to the second attach point, it configures the center case mechanism for latching and unlatching a left handed opening door. A slider is vertically slidably mounted within the housing and is in movable engagement with the pivoting member such that a pivoting motion of the pivoting member causes the slider to slide in a vertical direction. The slider includes at least one attach point for connection with the latch mechanism.
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 door latch control apparatus for use on a panic exit door allowing the door to be unlatched either manually or electrically is disclosed. Manual latch retraction is accomplished by pushing inwardly a push bar. Electrical latch retraction is accomplished by energizing a solenoid. A unique linkage system is provided to allow for the independent operation of the manual and electrical latch retraction. The apparatus also provides for the door to be dogged, i.e., securing the latch in the unlatched position, either manually or electrically. Manual dogging may be accomplished with the use of a fail safe dogging mechanism. Electrical dogging is accomplished by leaving the solenoid energized and thus the latch retracted.
Abstract:
A panic exit device has an improved linkage between the push bar and the push bar housing so that no significant horizontal or sideways movement of the push bar occurs as it is pushed inward to unlatch the door. Each linkage employs a link having one linear and one curved slot to smoothly guide the push bar whenever the push bar is pressed inwardly. The device further features a fail-safe dogging mechanism so that the push bar cannot be unintentionally dogged. A fail-safe clip is moved out of an interfering position with the dogging element only when the push bar is moved to unlatch the door.
Abstract:
A rod casing for activating vertically arranged latch bolts, the casing and latch bolts arranged in an active stile of a door and engageable to a door frame. The rod casing provides a vertically slidable actuator cam engageable by both a lock/unlock actuator and a delatch or dogging actuator. The lock/unlock actuator and the delatch actuator are rotatably mounted upon a spindle piece which itself is rotatable by a user such as by a key-activated lock cylinder. The lock-unlock actuator when rotated, slidingly abuts the actuator cam and drives the actuator cam vertically upward to cause unlatching of the latch bolts. The delatch actuator, upon rotation of the spindle piece in an opposite direction underlies the actuator cam and dogs the actuator cam in its vertically risen position. A panic exit device is also provided which has a lift plate mounted fixedly to the rod slide, the lift plate liftable by a pivoting of a lift lever, the lift lever pivoted by a lateral thrusting of a push plate slidably held beneath a push pad of the panic exit device. When compressed by a user, the push pad compresses two motion actuators housed beneath the push pad which laterally translate the push plate toward the lift lever. A spring loaded panic exit device dogging mechanism is also provided.
Abstract:
A dogging device for a door panic exit device which provides a tongue portion which releasably engages a ledge portion of an inwardly projecting push bar to lock the push bar in an inward position with respect to the door. The tongue portion is mounted for axial movement and limited rotational movement with respect to a housing of the panic exit device. In an undogged condition the ledge portion moves inward with the push bar and abuts and deflects the tongue portion harmlessly inwardly without any engagement. By axially translating the tongue portion into the housing the tongue portion clears the ledge portion and springs into a position outwardly of a trailing side of the ledge portion whereupon release of the actuating button translates, by a spring bias, the tongue portion back axially toward its original position, which results in the tongue portion being positioned abutting the trailing side of the ledge. A lug abutting the housing limits the rotational movement of the tongue portion so that retraction of the ledge portion, and thus the push bar, is prohibited.
Abstract:
The present invention provides a combination door and panic handle for use on the interior side of entrance doors. In one mode of operation the panic handle may be moved inwards towards the door face to unlatch the door. In this mode of operation the door may be opened on the exterior side by use of a key. In an alternative mode of operation, the panic handle is "locked-out" and prevented from moving. In this mode of operation the door is unlatched and the panic handle may be used as a fixed door handle. In the movable mode of operation, pressure may be applied along any portion of the panic handle to facilitate unlatching the door. The operating mechanism of the panic handle is concealed presenting a smooth uncluttered appearance.
Abstract:
A door push bar lock-out retainer for a door having a swingable push bar. A member is swingably attachable to the door and can swing above the level of the push bar and then downwardly thereon and it has a hook for retaining the push bar in the unlocked position. A pin and an elongate slot form an attachment for the member so that it can swing above the push bar even when the push bar is in its unlocked position away from the door.
Abstract:
An exit fixture for a door is connected with the lock on the door and includes manually operated means which when depressed retracts the bolt of the lock, thereby releasing the door. Springs act upon the manually operated means to restore the manually operated means to its original position wherein the bolt will again project from the door. A bellows or other pneumatic device when filled with pressurized air overcomes the force exerted by the springs so as to allow the manually operated means to assume the position in which the latch bolt is retracted, thus permitting the door to be opened and closed without operating the lock.