Actuating and locking mechanism for sliding door
First Claim
1. An actuation and locking mechanism for a slidable prison door or the like comprising a mounting plate removably secured in an enclosed transom over the door, a pivotal motor assembly removably mounted on said mounting plate and including a selectively driven pinion, a selectively movable carriage assembly in the transom having a rack thereon normally in mesh with the pinion and having the door suspended therefrom, a drop bar assembly including a drop bar mounted on and selectively vertically driven relative to the mounting plate, the drop bar having lock means thereon which lock the carriage assembly in the locked position of the drop bar to preclude carriage assembly and door movement and which unlock the carriage assembly in an unlocked position of the drop bar to allow the carriage assembly and door to be slidably driven by the rack and pinion upon motor actuation, and an emergency release assembly pivotally mounted on the mounting plate normally to hold the pivotal motor assembly in place with the pinion in mesh with the rack, said emergency release assembly upon actuation pivoting the pivotal motor assembly to disengage the pinion from the rack and moving the drop bar to the unlocked position wherein the lock means unlocks the carriage assembly to allow the door to be manually opened or closed.
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Accused Products
Abstract
An actuation and locking mechanism for sliding prison doors or the like includes a pivotal motor assembly, a movable carriage assembly reciprocally driven by the motor assembly and carrying the door, a drop bar assembly for locking or unlocking the carriage assembly and door, control means for actuating the motor and drop bar assembly as required to open, close, lock or unlock the door, emergency release and means manually to disengage or engage the drop bar assembly and pivotal motor assembly to allow the door to be manually opened, locked opened, closed or locked closed. The components of the actuating and locking mechanism are easily installed and serviced, may be universally used for right or left hand doors with minor electrical modifications, may be readily incorporated in multiple door systems and are concealed in a fail safe mode.
17 Citations
29 Claims
- 1. An actuation and locking mechanism for a slidable prison door or the like comprising a mounting plate removably secured in an enclosed transom over the door, a pivotal motor assembly removably mounted on said mounting plate and including a selectively driven pinion, a selectively movable carriage assembly in the transom having a rack thereon normally in mesh with the pinion and having the door suspended therefrom, a drop bar assembly including a drop bar mounted on and selectively vertically driven relative to the mounting plate, the drop bar having lock means thereon which lock the carriage assembly in the locked position of the drop bar to preclude carriage assembly and door movement and which unlock the carriage assembly in an unlocked position of the drop bar to allow the carriage assembly and door to be slidably driven by the rack and pinion upon motor actuation, and an emergency release assembly pivotally mounted on the mounting plate normally to hold the pivotal motor assembly in place with the pinion in mesh with the rack, said emergency release assembly upon actuation pivoting the pivotal motor assembly to disengage the pinion from the rack and moving the drop bar to the unlocked position wherein the lock means unlocks the carriage assembly to allow the door to be manually opened or closed.
- 25. An actuation and locking mechanism for sliding prison doors or the like comprising a pivotal motor assembly centrally located above the door to open and close left or right hand doors, a movable carriage assembly reciprocally driven by the motor assembly through a rack and pinion drive, said carriage assembly carrying the door, a drop bar assembly normally operated by a solenoid selectively for locking or unlocking the carriage assembly and door, control means for actuating the motor and drop bar assembly as required to open, lock open, close, lock close the door, and emergency release means to disengage or engage the drop bar assembly and pivotal motor assembly to allow the door to be manually opened, closed, unlocked or locked.
Specification