HATCH COVER CLOSING AND LOCKING DEVICE Russian patent published in 2015 - IPC B64C1/14 B64G1/22 

FIELD: aircraft engineering.

SUBSTANCE: device comprises rotary units, seal, seat, cover closure latch. Rotary units comprise hinges with thrust arranged on edges and hatch cover. Hinge pin is equipped with torsion springs separated by washer to interact with extra thrust secured at hinge moving part. Seat is arranged at hatch edge and composed of a cup with its end interacting with U-like seal of resilient section tightly secured over cover inner surface edges. Pin is secured by support parallel with hinge rotation axes opposite the cover rotation units to interact with spring-loaded latch integrated with handle. Cylindrical sector of handle that offset relative to hinge pin interacts with groove made in hatch support rigidly secured at hatch edge support. Said support has ledge to interact with hatch cover support. Stiffness ribs extending above the seal are arranged all over their edges. Spring-loaded latch axis located at the distance from the groove smaller than cylindrical sector radius and closer to hatch edges.

EFFECT: higher reliability, simplified design, decreased weight.

10 dwg