High-security self-rising access frame door
OwnerDavid Reisenderinventor
Life of this patent
Estimating the term…
Abstract
A closure system for the access opening in a barrier to an enclosed space for confining individuals. The closure system has a rear frame plate, a front frame plate, middle spacer plates and a sliding door slidable between the frame plates to move between an open position and a closed position closing off the access opening. One or more door springs configured to bias the sliding door towards a partially open position, when the sliding door is unlocked by an associated locking mechanism, and thereby providing single-handed functionality. Dual purpose guide-security bars along a rear surface of the sliding door are configured for both preventing the sliding door from getting jammed when sliding and for preventing a confined individual from tampering with the locking mechanism.
Claims11
A closure system for an access opening in a barrier/door of an enclosure sized to confine at least one adult human being, the closure system comprising:
- a rear frame plate attached to the barrier/door so that the rear frame plate circumscribes the access opening and that an opening of the rear frame plate aligns with the access opening;
- one or more canal portions formed into the rear frame plate, wherein an entire periphery each said canal portion is inward of and circumscribed by an outer perimeter of the rear frame plate;
- a front frame plate;
- a sliding door configured to selectively slide between the rear and front frame plates between an open position and a closed position closing off the access opening;
- and
- one or more elongated actuators disposed in a respective one of the one or more canal portions and configured to bias the sliding door to a partially open position.
Dependencies are inferred from the claim text.