417 / | HD | PUMPS |
|
321 | DF | MOTOR DRIVEN {32} |
410.1 | | .~ Electric or magnetic motor {10} |
411 | DF | .~.~> Including electric power generating or storage means |
412 | DF | .~.~> Collapsible wall pump {1} |
414 | DF | .~.~> Internal - external pressure balancer |
415 | DF | .~.~> Reciprocating rigid pumping member {2} |
420 | DF | .~.~> Pump magnetically coupled to rotary drive |
421 | DF | .~.~> Trapped air motor seal (i.e., diving bell type) |
422 | DF | .~.~> Sealed service conduit |
423.1 | DF | .~.~> Rotary motor and rotary nonexpansible chamber pump {13} |
410.2 | DF | .~.~> Having piezoelectric driven blade |
410.3 | DF | .~.~> Rotary expansible chamber pump {2} |