F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/47
F04B 13/00 (2006.01) F04B 7/06 (2006.01)
Patent
CA 1292640
ABSTRACT OF THE DISCLOSURE A valveless, variable displacement, reversible, fixed dead volume metering pump formed with a cylinder having ports through which to pump fluid. A rotatable piston is in the cylinder with a duct thereon communicable with the ports to transfer fluid to and from the cylinder. A drive coupling is provided for the piston. The piston reciprocates in the cylinder while rotating in a timed relation with respect to the ports and the timed relationship is reversible. The relative angularity between the axis of the piston and the axis of the drive coupling is reversible to obtain reversal of fluid flow with the degree of relative angularity determining the volume of fluid being pumped. A substantially constant dead-volume is maintained throughout the range of relative angularity between the axes through the use of a pair of floating swivel axes with a cam to restrict one or both of the axes and free the other depending upon direction of relative angular movement of the axis of the piston with respect to the axis of the drive coupling.
520517
Mcfadden Fincham
Pinkerton Harry E.
LandOfFree
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