.~.~ Rotary expansible chamber type precedes reciprocating
DEFINITION
Classification: 417/206
(under subclass 205) Apparatus in which the fluid is acted upon by a rotary expansible chamber- type pump and then by an expansible chamber- type pump having a pumping member which performs its pumping function by a reciprocating (including oscillating) motion.
(1) Note. A rotary expansible chamber- type pump under this definition is as defined in Class 418.
(2) Note. Flexible wall pumping members (e.g., diaphragm, bellows) are not considered to have reciprocating motion under this definition.
