摘要:
A control assembly configured for a narrow stile door and for interaction with an exit device. The control assembly provides a means to translate user input, such as rotating a lever to operate a centercase. The control includes a slider for sliding movement within a housing between a first position extending a latchbolt of the exit device and a second position withdrawing the latchbolt. The control assembly configuration incorporates a swivel locking latch rotatable into the path of the slider to prevent the slider from moving out of the first position.
摘要:
A push pad releasable exit device with continuous deadlocking for mounting near a door edge for engaging a lock strike includes a housing having first and second sidewalls upon which are mounted two end walls and an internal wall parallel to the end walls, each of the end walls and the internal wall having a hole, the holes being aligned on a common axis, the first sidewall having a wedge stop projecting inwardly therefrom toward the axis of the holes in the end walls and the internal wall; a tapered latch bolt mounted on a cylindrical shaft, the shaft extending through the holes and having a provision for urging the latch bolt toward the lock strike; a wedge plate having a hole providing clearance around the shaft and aligned with the holes in the end walls, having a tab pivotally resting in a slot of the second wall, and having a corner distal from the tab resting against the wedge stop when the door is in an open position; a provision for sensing when the door is in a closed position and for flipping the wedge plate away from the wedge stop to grip the shaft and to thereby deadlock the latch bolt; and further provision for releasing the shaft in response to minimal deflection of the push pad to permit the latch bolt to ride over the lock strike driven only by the normal force required to open the door.
摘要:
A lead-in device is used during installation of a rim-type lock cylinder having a tailpiece in an exit mechanism including a cam having a tailpiece receiving aperture. The lead-in device includes a converging tunnel having an exit aperture sized to match the tailpiece receiving aperture and an entrance aperture that is larger than the exit aperture. The lead-in device also includes a pair of arms positioned to be inserted into the cam aperture to hold the exit aperture in registry with the cam aperture and to maintain the entrance aperture at a predetermined distance from the cam. When the arms are positioned in the cam aperture and the exit aperture is in registry with the cam aperture, the converging tunnel guides a tailpiece inserted into the entrance aperture through the exit aperture and into the cam aperture to engage the cam.
摘要:
A doorholder for retaining a door in an open position by magnetic interaction with an armature secured to the door has an electromagnetic flux generator which includes a core having a face confronting the armature and a coil of wire surrounding the core. A cup having an inside diameter somewhat greater than the coil outside diameter receives the coil, the core extending from the face to the cup bottom. A power control circuit including a resistor circuit controls electrical power supplied to the coil, the power control circuit being mounted on a circuit board situated between the coil rear surface and the cup bottom. The resistor circuit being situated in sufficiently close proximity to the cup bottom for transfer of heat from the resistor circuit to the cup. The power control circuit may also include a low resistance circuit coupled to the resistor circuit, and including a fusible link selected to carry current when the power input terminals are coupled to a lower voltage power source and to stop carrying current when the power input terminals are coupled to a higher voltage power source.
摘要:
A door lever assembly for disengaging an unlocked latch of a lockable door latch assembly includes a lever handle rotatably connected to a trim housing supporting a stop plate. A cam is operably connected to the lever handle and positioned to rotate in response to rotation of the lever handle, converting its rotational movement to linear movement of a movable slider positioned adjacent to the cam. A lift arm is operably connected to vertical rods of the door latch assembly and an over-ride spring is connected between the slider and the lift arm. The over-ride spring transmits motion of the slider to the lift arm to lift the lift arm and the connected vertical rods when the door latch assembly is in an unlocked position. The over-ride spring compresses in response to slider movement when the blocking slide is positioned to block movement of the lift arm when the door latch assembly is in its locked position, preventing damage to components of the door lever assembly. In an unlocked position, a pivot rotates to control contact between the slider and the stop plate.
摘要:
A door holder assembly, for attachment between a door jamb and a door, to hold the door in an open position includes a jamb bracket attached to the door jamb and a jamb arm pivotally attached to the jamb bracket. A channel assembly having a longitudinally extending channel is attached to the door, and a hold open stop is fixed in the channel of the channel assembly. The hold open stop is configured to have a stop element with a first ramp and a second ramp engageable by a slide assembly. The slide assembly is pivotally attached to the jamb arm and positioned for longitudinal movement in the channel, with the slide assembly having a slide frame configured to support a rocker pivotably connected to the slide frame. The rocker has a catch on one side of a pivot and rocker face on the opposite side of the pivot, with the catch configured to slide over the first ramp for reversible engagement with the second ramp of the stop element to hold the door in an open position. The force required to slide the catch over the first and second ramps is determined by the preload force on an adjustment wedge that engages the rocker face.
摘要:
A door lever assembly for disengaging an unlocked latch of a lockable door latch assembly includes a lever handle rotatably connected to a trim housing and a cam operably connected to the lever handle. The cam is positioned to rotate in response to rotation of the lever handle, converting its rotational movement to linear movement of a movable slider positioned adjacent to the cam. A lift arm is operably connected to vertical rods of the door latch assembly and an over-ride spring is connected between the slider and the lift arm. The over-ride spring transmits motion of the slider to the lift arm to lift the lift arm and the connected vertical rods when the door latch assembly is in an unlocked position. The over-ride spring compresses in response to slider movement when the blocking slide is positioned to block movement of the lift arm when the door latch assembly is in its locked position, preventing damage to components of the door lever assembly.
摘要:
An overhead door holder assembly, for attachment between a door jamb and a door, to hold the door in an open position includes a jamb bracket attached to the door jamb and a jamb arm pivotally attached to the jamb bracket. A channel assembly having a longitudinally extending channel is attached to the door, and one of a group of modular slide assemblies that interchangeably fit into the channel assembly can be selected for pivotal attachment to the jamb arm. The slide assemblies have attached polymeric blocks that reduce wear caused by sliding components and may have door hold and door stop provisions as well.
摘要:
A pneumatically controlled exit device assembly for remote latching and unlatching of a door by controlling air pressure directed to the exit device from a pneumatic pressure source is described. The device includes a push bar operated exit device for retracting a latch of the emergency door, with the exit device having an air cylinder assembly biased to control retraction of the latch in response to changes in applied air pressure. In addition, a pneumatic transfer assembly is provided in fluid connection between the pneumatic pressure source and the air cylinder assembly, with the pneumatic transfer assembly having an air line and a mechanism for protecting the airline positioned between the door frame and the door.
摘要:
An electromagnetic door lock assembly employs an electromagnet positioned in a frame adjacent to a door, power source for providing power to the electromagnet, and an adjustable armature assembly positioned in the door for interaction with the electromagnet. The armature assembly includes an armature plate having a front surface and a back surface opposite from the front surface, a backing plate situated adjacent to the back surface of the armature plate, a stem coupling the backing plate to the armature plate including a spring biasing the backing plate and armature plate toward each other, a mounting plate for mounting the armature assembly to a door to be locked, adjusting screws for adjustably positioning the backing plate at a fixed position with respect to the mounting plate so that the armature plate is positioned at a first position for optimum interaction with the electromagnet, the screws having elongated heads for maintaining the relative alignment between the armature plate and the mounting plate as the armature plate moves between said first position and a position contiguous to the electromagnet.