US PATENT SUBCLASS 92 / 90
.~ Wall portion formed of flexible material

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

89  DF  COLLAPSIBLE CHAMBER WALL PORTION (E.G., HINGED OR FLEXIBLE WALL) {1}
90.~ Wall portion formed of flexible material {5}
91  DF  .~.~> Envelope having restricted fluid opening {1}
93  DF  .~.~> Annular flexible wall portion peripherally sealed to spaced relatively fixed concentric rigid members
94  DF  .~.~> With separate biasing means {1}
96  DF  .~.~> Diaphragm type {4}
105  DF  .~.~> Coaxial radially spaced relatively movable undistortable members joined by flexible wall

DEFINITION

Classification: 92/90

(under subclass 89) Apparatus in which the wall portion is formed of flexible material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

34+, for a bellows type expansible chamber portion formed of flexible material.

48+, for plural flexible wall working members.

64, for plural relatively movable working members in which one of said working members is of the flexible wall type.

SEE OR SEARCH CLASS

73, Measuring and Testing, 262+, for a flexible wall type, expansible chamber volume or rate of flow meter, and subclasses 715+ for a flexible wall type fluid pressure gauge.

74, Machine Element or Mechanism,

18+, for a flexible wall type sealing element attached to a relatively movable rod and casing.

222, Dispensing,

206+, for a resilient wall type dispenser.

417, Pumps,

474, for an expansible chamber type pump having a progressively deformed elongated flexible wall.