Upward/outward opening, plug-type overwing emergency exit hatch

Details Upward/outward opening, plug-type overwing emergency exit hatch Upward/outward opening, plug-type overwing emergency exit hatch

1989-12-21

1991-07-16

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft structure

Details

49249, B64C 114

Patent

active

050318632

ABSTRACT:
A hatch assembly for closing an overwing emergency exit opening formed in the body of an aircraft. The hatch (10) includes a plug-type hatch frame (24) and a pair of hinge arms (36) providing swinging movement of the hatch between a closed position and a fully open position that is spaced above and outboard of an opening (12) in the body (14) of an aircraft. Triggering movement of either an internal handle (62) or an external (106) disengages a latch (126) operable when the hatch is in the closed position, thereby placing the hatch in an unlatched condition. Further movement of either handle causes a pair of compression springs (50) coupled to the hinge arms to automatically drive the hatch slightly inward and upward from the closed position to an intermediate lifted position to clear a stop mechanism (32 and 34), and then outward to the open position. Because the components of the hatch are located substantially within the space between an outer skin (18) of the aircraft and an interior cabin liner (20 ), the passenger headroom area and the overhead storage bins (22) are not violated.

REFERENCES:
patent: 2748855 (1956-06-01), Siems et al.
patent: 4473201 (1984-09-01), Barnes et al.
patent: 4497462 (1985-02-01), Hamatani
patent: 4510714 (1985-04-01), Kasper et al.
patent: 4560123 (1985-12-01), Sealey et al.

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