US PATENT SUBCLASS 92 / 39
.~.~ With common movable wall

Current as of: June, 1999
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92 /   HD   EXPANSIBLE CHAMBER DEVICES

34  DF  BELLOWS TYPE EXPANSIBLE CHAMBER {10}
37  DF  .~ Plural bellows {2}
39.~.~ With common movable wall

DEFINITION

Classification: 92/39

(under subclass 37) Apparatus in which the several bellows type expansible chambers are provided with a wall secured to adjacent ends of the chambers to form a closure wall for each of said chambers, said wall being movable responsive to expansion or contraction of either chamber.