US PATENT SUBCLASS 417 / 423.11
.~.~.~ Having means to prevent fluid leaking between pump and motor

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}
423.1  DF  .~.~ Rotary motor and rotary nonexpansible chamber pump {13}
423.11.~.~.~ Having means to prevent fluid leaking between pump and motor

DEFINITION

Classification: 417/423.11

(under subclass 423.1) Apparatus wherein there is provided a sealing means to prevent pumped fluid from leaving the pumping chamber and entering the motor chamber.

SEE OR SEARCH CLASS

277, Seal for a Joint or Juncture, for a generic sealing means or process,

358+, for a relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.), subclasses 409+ for a dynamic close proximity seal (e.g., contactless, fluent, etc.) or subclasses 500+ for a dynamic circumferential contact seal for other than a piston.