Piston machines or pumps characterised by having positively-driven valving

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS

F04B7/00Piston machines or pumps characterised by having positively-driven valving

F04B7/0003the distribution member forming both the inlet and discharge distributor for one single pumping chamber F04B7/0007and having a rotating movement F04B7/0011and having an oscillating movement F04B7/0015and having a slidable movement F04B7/0019a common distribution member forming a single discharge distributor for a plurality of pumping chambers F04B7/0023and having a rotating movement F04B7/0026and having an oscillating movement F04B7/003and having a slidable movement F04B7/0034and having an orbital movement F04B7/0038the distribution member forming a single inlet for a plurality of pumping chambers or a multiple discharge for one single pumping chamber F04B7/0042with specific kinematics of the distribution member F04B7/0046for rotating distribution members F04B7/0049for oscillating distribution members F04B7/0053for reciprocating distribution members F04B7/0057Mechanical driving means therefor F04B7/0061for a rotating member F04B7/0065being mounted on the main shaft F04B7/0069for a sliding member F04B7/0073the member being of the lost-motion type F04B7/0076the members being actuated by electro-magnetic means F04B7/008the distribution being realised by moving the cylinder itself F04B7/0084Component parts or details specially adapted therefor F04B7/0088Sealing arrangements between the distribution members and the housing F04B7/0092for oscillating distribution members F04B7/0096for pipe-type distribution members F04B7/02the valving being fluid-actuated F04B7/0208the distribution member forming both the inlet and discharge distributor for one single pumping chamber F04B7/0216and having an oscillating movement F04B7/0225and having a slidable movement F04B7/0233a common distribution member forming a single discharge distributor for a plurality of pumping chambers F04B7/0241and having an oscillating movement F04B7/025and having a slidable movement F04B7/0258and having an orbital movement F04B7/0266the inlet and discharge means being separate members F04B7/0275and being deformable F04B7/0283and having a rotating movement F04B7/0291the distribution being realised by moving the cylinder itself F04B7/04in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports F04B7/045Two pistons coacting within one cylinder F04B7/06the pistons and cylinders being relatively reciprocated and rotated