US 9,809,295 B1
Flight actuated door seal
Robert E. Bauer, Torrance, CA (US); and John C. Rufino, Long Beach, CA (US)
Assigned to NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US)
Filed by Robert E. Bauer, Torrance, CA (US); and John C. Rufino, Long Beach, CA (US)
Filed on Jun. 7, 2016, as Appl. No. 15/175,890.
Int. Cl. B64C 1/14 (2006.01); F16J 15/06 (2006.01); E06B 7/205 (2006.01)
CPC B64C 1/1461 (2013.01) [E06B 7/205 (2013.01); F16J 15/061 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sealing system for an aircraft having an opening and a door movable between an open condition spaced from the opening and a closed condition covering the opening, the system comprising:
a cover plate connected to the aircraft adjacent the opening;
a first magnetic coupling secured to the cover plate and including a first plurality of magnets; and
a second magnetic coupling for securing to the door and including a second plurality of magnets, the first magnetic coupling being repelled by the second magnetic coupling when the couplings have a first degree of alignment with one another which causes the cover plate to move away from the door, the first magnetic coupling being attracted to the second magnetic coupling when the magnetic couplings have a second degree of alignment with one another greater than the first degree causing the magnetic couplings to engage one another and seal the opening in the aircraft.