Fluid compression system
AssigneeLes Chaussures Stc Inc.
InventorsRegis Fortin, Andre Emond, Michel Bisson
Life of this patent
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Abstract
A fluid pump (10) has a compression member (12) having a variably-sized compression surface (13b) movable against fluid pressure in a chamber (22). The effective surface area of the compression member (12) decreases in size together with a corresponding cross-sectional area of the chamber (22) from a maximal area at a beginning of the compression stroke to a minimal area at the end of the compression stroke. Using a variably-sized surface area to compress a fluid volume allows obtaining a rapid gain of fluid pressure even for applications in which the compression member (12) is actuated at relatively low frequencies and under the action of relatively small forces.
Claims20
A fluid pump comprising a chamber containing a fluid, the chamber having a fluid inlet and a fluid outlet, a compression member having a compression surface with an effective surface area movable against fluid pressure in the chamber, the compression member having a compression stroke and a return stroke, the effective surface area of the compression member decreasing in size together with a corresponding cross-sectional area of the chamber from a maximal area at a beginning of the compression stroke to a minimal area at the end of the compression stroke.
A method for imparting pressure to a fluid by direct displacement of a compression member in a chamber containing a fluid, the chamber having a fluid inlet and a fluid outlet, the compression member having a compression surface on which the fluid in the chamber exerts a pressure, the compression surface of the compression member having a variable effective surface area, the method comprising:
- reducing the effective surface area of the compression member and a corresponding cross-sectional area of the chamber along a compression stroke of the compression member in the chamber, the effective surface area of the compression member and the cross-sectional area of the chamber being smaller towards the end of the compression stroke than at a beginning of the compression stroke.
Dependencies are inferred from the claim text.