Movable or removable closures – With specified means to effect emergency release to closure
Patent
1997-06-24
1999-09-28
Stodola, Daniel P.
Movable or removable closures
With specified means to effect emergency release to closure
49 21, 49327, 92121, E05C 1502
Patent
active
059569018
ABSTRACT:
A hatch assembly having a hatch cover biased to a normally closed position. The hatch cover is connected to an impeller contained and rotatable within a impeller chamber of a housing. When the cover is to be opened, pressurized gas is introduced into the housing causing rotation of the impeller. By virtue of the coupling of the impeller to the hatch cover, the rotation causes the hatch cover to open. After opening, the hatch cover may thereafter be closed by a spring bias forming part of the coupling arrangement.
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Northrop Grumman Corporation
Stodola Daniel P.
Sutcliff Walter G.
Tran Khoa
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