US PATENT SUBCLASS 92 / 98 D
.~.~.~.~ Rolling diaphragm

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  DF  .~ Wall portion formed of flexible material {5}
96  DF  .~.~ Diaphragm type {4}
98 R  DF  .~.~.~ Entire periphery secured to rigid working chamber forming wall {4}
98 D.~.~.~.~ Rolling diaphragm

Unofficial Alpha Subclasses: R D

DEFINITION

Classification: 92/98

(under subclass 96) Apparatus in which the periphery of the diaphragm is directly secured along all of its length against motion in any direction to the wall of a rigid structure which forms the working chamber for the diaphragm.

SEE OR SEARCH CLASS

73, Measuring and Testing,

278, for a diaphragm mounting means for a diaphragm used in an expansible chamber type volume or rate of flow meter.

181, Acoustics,

148+, and 157+ for a diaphragm and mounting therefor for an acoustical device.