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US 6,484,449 B1Granted
Access apparatus
AssigneeMul-T-Lock Security Products Ltd.
InventorEyal Artsiely
Life of this patent
Estimating the term…
Abstract
Access apparatus including an access device including at least one of a door and a window, the access device including at least one openable element; and opening apparatus adapted to open the at least one openable element in a presence of a pressure difference of a predefined magnitude between opposite sides of the access device.
Claims9
A method for increasing security of a cockpit of an aircraft, the method comprising:
- providing a door in a door frame of a cockpit of an aircraft;
- providing a lock device operative to lock a lockable element of said door;
- and
- providing an unlocking apparatus operative to unlock said lock device due to a presence of a pressure difference of a predefined magnitude between opposite sides of said door.
1 more element
Dependencies are inferred from the claim text.