Patent ID: 7896290

Claim:
A latch device of a hinge-type cockpit door provided between a cabin and a cockpit of an aircraft and opened toward the cockpit side, said latch device comprising: a housing fixed to a door body; a latch base rotatably supported by a first pin with respect to the housing; a handle rotatably mounted to the latch base; a bolt interlocking with the handle; a flapper mounted to the housing, a first end of the flapper detachably engaged with the latch base; a trigger pivotably rotated with a second pin and detachably engaged with a second end of the flapper; a cylinder provided at the housing; a pressure-sensing piston located inside the cylinder, the piston having a tip end that penetrates the housing and contacts the trigger; and a holding/releasing mechanism for disengaging a stopper base by operation of the pressure-sensing piston moved when air pressure in the cockpit is lowered, wherein the holding/releasing mechanism comprises a stopper device for regulating movement of the trigger when an impact force is applied to the door body.