Door for aircraft, particularly for helicopter, with interconnec

Details Door for aircraft, particularly for helicopter, with interconnec Door for aircraft, particularly for helicopter, with interconnec

1998-09-11

2000-10-03

Poon, Peter M.

Aeronautics and astronautics

Aircraft structure

Details

2441294, 2441291, 2441183, B64C 114

Patent

active

061261149

ABSTRACT:
A door is provided for an aircraft. The aircraft includes a cabin having a floor and a roof. The door includes an upper and lower leaves hinged along axes approximately parallel to a longitudinal axis (X--X) of the aircraft. The leaves can swing between an open position in which each of the two leave projects outwards from the cabin and a closed position in which the two leaves are folded down on the cabin and are fixed with the cabin by locking device. The door further includes interconnecting mechanisms for connecting the two leaves to each other so that when one leaf is moved between the open and closed positions the other leaf will also move. A stopper holds one of the upper and lower leaves in the open position when the interconnecting mechanism disposes the stopper in an extended position. A driver is provided for moving one of the leaves from its closed position to its open positions The driving of one of the leaves, through the interconnecting mechanism, also moves the other of the two leaves to the open position. The driver includes a mechanism for sufficiently setting the lower leaf in motion toward the open position so that the lower leafs own weight further continues the lower leafs motion to the open position.

REFERENCES:
patent: 1373567 (1921-04-01), Overlien
patent: 1579751 (1926-04-01), Buckley
patent: 1658240 (1928-02-01), Graham
patent: 2531263 (1950-11-01), Fink et al.
patent: 4024671 (1977-05-01), Masao
patent: 5577793 (1996-11-01), Kobasic

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