US PATENT SUBCLASS 417 / 413.1
.~.~.~ Diaphragm type

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
410.1  DF  .~ Electric or magnetic motor {10}
412  DF  .~.~ Collapsible wall pump {1}
413.1.~.~.~ Diaphragm type {2}
413.2  DF  .~.~.~.~> Piezoelectric driven
413.3  DF  .~.~.~.~> Of semiconductor material (e.g., silicon, germanium, etc.)

DEFINITION

Classification: 417/413.1

Diaphragm type:

(under subclass 412) Apparatus in which the deformable wall comprises a relatively thin membranelike member having a peripheral edge portion, said member being adapted to be associated with a surrounding or encompassing tubular rigid structure to extend transversely thereof to form a closing wall for said tubular structure, the outer peripheral edge of said membrane being in sealing relationship with the encompassing wall of said tubular structure.

(1) Note. The membranelike member need not span the entire space within the encompassing wall of the tubular member, but may be in the form of a ring or frustum having the inner peripheral edge thereof in sealing engagement with a rigid element movable relative to and coaxial with the encompassing tubular member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

381, for a fluid motor driven pump in which a common diaphragm forms both the pumping member and motor working member.