.~> Oppositely movable walls of common chamber (69) (75)
DEFINITION
Classification: 92/48
(under the class definition) Apparatus comprising two or more working members, each of said working members having a portion of the wall thereof formed of material which is pliable, and in which the flexing of said pliable material constitutes the movement of said working member.
(1) Note. A device comprising plural axially spaced flexible wall members having working surface areas of the same size and forming the sole means for dividing an encompassing housing into separate working chambers, and in which movement of one flexible wall member is transmitted to the second flexible wall members as a result of having said flexible wall members in face to face contact, or spaced with an interposed rigid element, or body of incompressible fluid to form in effect a single diaphragm is excluded from this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37+, for plural flexible wall working members of the bellows type.
97, for a flexible diaphragm comprising a pair of axially spaced flexible walls provided with a noncompressible force transmitting means therebetween.
103, for a flexible wall working member formed of a plurality of superposed laminae of flexible material.
SEE OR SEARCH CLASS 73, Measuring and Testing,
263+, for a volume or rate of flow meter of the diaphragm or collapsible chamber wall type having a plurality of diaphragms, and subclasses 716+ for a fluid pressure gauge including plural and/or differential diaphragms.
