US PATENT SUBCLASS 49 / 22
.~ Fluid softenable or soluble latch release

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

21  DF  RESPONSIVE TO OR DIRECTLY ACTUATED BY AMBIENT FLUID {2}
22.~ Fluid softenable or soluble latch release

DEFINITION

Classification: 49/22

(under subclass 21) Device comprising a means to hold a closure against the action of gravity or a biasing means, and wherein one of the elements of the holding means is of a material which is dissolved or weakened by a fluid, such as water, so that the holding means becomes inoperative in the presence of the fluid.