.~.~.~> Common element forms inlet or discharge distributor for plural chambers {1}
DEFINITION
Classification: 417/515
(under subclass 510) Apparatus comprising two or more pumping chambers.
(1) Note. A device in which fluid is moved from one side of a pumping member to the opposite side thereof during movement of the pumping member in one direction of its stroke and then lifted out of the chamber during movement of the pumping member in the second direction of its stroke is not considered plural chambers and is excluded from this subclass.
(2) Note. A pump including a plurality of pumping members acting upon a body of fluid, and in which the fluid acted upon by a first pumping member is in communication with the fluid acted upon by a second pumping member in all operative conditions of the pump, is not considered as constituting plural chambers and is excluded from this subclass. Such subject matter is classified below on other features.
