Abstract: A door closer includes a housing, a spindle carried in the housing, being exposed at a top side and a bottom side of the housing and arranged to rotate about an axis relative to the housing, and a passage through the spindle comprising a passage through the housing. The passage provides a means for wires or other conduits to pass from the door frame into the door, without being exposed outside of the door frame and door.

Abstract: A door closer power adjusting device for a door closer having a spindle driven by a compressed spring with a movable plate for adjusting spring compression, or with a screw for adjusting spring compression, between a high and low level of compression. A powered unit moves the plate in a first direction to achieve the low level of compression and in a second direction to achieve the high level of compression. A switch activates the powered unit in the first direction and a first switch is engaged when the spring is compressed to the low level of compression to deactivate the powered unit. A timing circuit activates the powered unit in a second direction after passage of a predetermined time. A second switch is engaged when the spring is compressed to the high level of compression to deactivate the powered unit.

Abstract: An electronic door lock dogging mechanism is provided with a bolt arranged to move into and out of a door to selectively engage a portion of a door frame to lock a door when extending out of the door and when recessed within the door, unlocking the door from the door frame. A first mechanical element is arranged to normally bias the bolt outwardly relative to the door. A first electrical element is arranged, when energized, to move the bolt into a recessed position in the door to unlock the door. A second mechanical element is arranged to be biased into a dogging position relative to the bolt when the first electrical element has moved the bolt into its recessed position. A third mechanical element is arranged to engage the second mechanical element to move it out of the dogging position when the third mechanical element is moved into a first position. A fourth mechanical element is arranged to bias the third mechanical element into the first position.

Abstract: An electronic door lock dogging mechanism is provided with a bolt arranged to move into and out of a door to selectively engage a portion of a door frame to lock a door when extending out of the door and when recessed within the door, unlocking the door from the door frame. A first mechanical element is arranged to normally bias the bolt outwardly relative to the door. A first electrical element is arranged, when energized, to move the bolt into a recessed position in the door to unlock the door. A second mechanical element is arranged to be biased into a dogging position relative to the bolt when the first electrical element has moved the bolt into its recessed position. A third mechanical element is arranged to engage the second mechanical element to move it out of the dogging position when the third mechanical element is moved into a first position. A fourth mechanical element is arranged to bias the third mechanical element into the first position.

Abstract: A door closer power adjusting device for use with a door closer having a spindle driven by a compressed spring with a movable plate for adjusting an amount of compression of said spring, or with an adjusting screw for adjusting an amount of compression of said spring, between a first high level of compression and a second low level of compression. A powered unit is provided for moving the plate in a first direction to achieve the second low level of compression and in a second direction to achieve the first high level of compression. A user engageable switch is used to activate the powered unit in the first direction and a first switch is arranged to be engaged upon the spring being compressed to the second low level of compression to deactivate the powered unit. A timing circuit is used to activate the powered unit in a second direction after the passage of a predetermined amount of time.

Abstract: A latch assembly for use with a panic exit device, particularly a top latch having a U-shape which engages a stem portion of a T-shaped receiving lug mounted overhead to a top member of the door frame. The U-shaped top latch is pivotably mounted to the active stile of the door. The latch assembly causes the U-shaped latch to pivot upward to capture the stationary T-shaped receiving lug, or pivot downwardly to disengage from the T-shaped receiving lug. The latch member is in sliding and abutting engagement with two latch plates which slide in one direction to retain the latch member in a downward orientation to hold the latch in an open position, and slide in an opposite direction to allow the latch member to pivot upwardly upon engaging pressure by the strike. A wedge is caused to slide into blocking engagement with the latch when it is in the closed position.

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.

Abstract: The invention disclosed herein provides a panic exit device for doors having in their active side vertically operating bolts extending from the top and bottom of the door and a mechanism for retracting the bolts. Usually, the retracting mechanism may be activated by using a key in an exterior door lock or by depressing a panic bar on the interior of the door. The improved panic exit device of this invention provide a device for actuating the bolt retraction mechanism which is mounted inside a semi-hollow enclosure which is integral with the door. The mounting is accomplished with screws hidden from view by the glass pane securing mouldings. The panic exit device of the invention also provides an improved dogging mechanism to lock the actuator device in the actuated position, while simultaneously preventing excessive play in the panic bar.