US PATENT SUBCLASS 92 / 42
.~ With separate ring-like reinforcing element abutting pleat

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

34  DF  BELLOWS TYPE EXPANSIBLE CHAMBER {10}
42.~ With separate ring-like reinforcing element abutting pleat

DEFINITION

Classification: 92/42

(under subclass 34) Apparatus including a ring-like member positioned to abut against the bellows type expansible chamber wall at the apex of a pleat thereof, said ring-like member forming a means for restraining radial movement of said pleat portion.