.~ Having additional chamber intake connection from nonpumping space
DEFINITION
Classification: 417/439
(under subclass 437) Apparatus in which the expansible chamber in addition to the normal inlet for pump fluid is provided with a connection to a space in the pump which does not form a part of the expansible chamber or the flow path of pump fluid to or from the chamber so as to draw fluid from said space.
(1) Note. The space may be one which expands and contracts incident to the operation of the pump (e.g., crankcase on the nonpumping side of a piston) or a leakage collection area, etc. The connection may be directly into the expansible chamber or may be to the pump fluid intake line upstream of the intake valve.
