US PATENT SUBCLASS 114 / 118
.~.~ Automatic

Current as of: June, 1999
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114 /   HD   SHIPS

116  DF  BULKHEADS AND DOORS {1}
117  DF  .~ Doors {2}
118.~.~ Automatic {1}
119  DF  .~.~.~> Sliding

DEFINITION

Classification: 114/118

Doors of bulkheads adapted for self-closure or in which the closing is automatic, as on the entry of water to a certain

height, the doors being closed by swinging or rotating.

SEE OR SEARCH CLASS

49, Movable or Removable Closures,

10+, for a stream spanning closure responsive to the amount or velocity of water in the stream and subclasses 21+ for a closure released for movement or directly actuated by an ambient fluid, e.g., rain or snow.