Frangible pneumatic latch

Details Frangible pneumatic latch Frangible pneumatic latch

2008-06-03

2008-06-03

Mansen, Michael R. (Department: 3644)

Aeronautics and astronautics

Aircraft structure

Passenger or cargo loading or discharging

C244S905000, C292S252000

Reexamination Certificate

active

07380755

ABSTRACT:
An inflatable evacuation slide system includes an inflatable evacuation slide stored in a packboard compartment the cover panel of which is retained by a plurality of frangible pneumatic latches. The frangible pneumatic latches each comprise a tension member one end of which is attached to the packboard housing and the other end of which is releasably attached to the cover panel. In normal operation, a pneumatic signal operating on an actuator piston withdraws the piston to allow the latch mechanism to release the cover panel. In the event of a failure of the release mechanism, since the releasable latch secures the cover panel to the frangible tension member rather than to the packboard directly, the force of the inflating evacuation slide breaks the frangible member allowing the cover panel to drop away with only a brief delay in slide deployment.

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