F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 19/22 (2006.01) F02M 65/00 (2006.01) F04B 53/00 (2006.01) F04B 53/14 (2006.01) G01M 15/00 (2006.01) G05D 7/06 (2006.01)
Patent
CA 2065975
FLUID FLOW GENERATING APPARATUS ABSTRACT OF THE INVENTION Apparatus for generating a precision fluid flow comprises a cylinder having side and end walls forming a fluid-receiving chamber having a fluid inlet and a fluid outlet. A cylindrical piston free of engagement with the cylinder side wall is movable longitudinally into the cylinder so as to displace through the fluid outlet a volume of fluid corresponding to the volume of the piston accommodated in the chamber. The piston is formed of a material which is substantially insensitive to variations in temperature and pressure of the fluid in the chamber so that the piston rod is substantially dimensionally stable. The piston is moved relative to the chamber by a precision driving mechanism either at a constant velocity to provide a constant volumetric flow of fluid through the outlet or at a variable velocity to provide a constant fluid pressure at the outlet.
Assembly Technology & Test Inc.
Ridout & Maybee Llp
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