Proportional fluid blending device for blending two or more gases or liquids

A fluid blending device comprising:

• a main body including a plurality of ports disposed within a valve seating plane, the plurality of ports each having the same geometrical shape;
• a valve plate pivotally mounted to said main body about a pivot axis which intersects each of the plurality of ports in the same geometrical locations and directions, wherein said valve plate pivots to contact the valve seating plane of said main body, thereby covering the plurality of ports in said main body;
• and
• means for applying a force to said valve plate towards the valve seating plane of said main body.

A fluid blending device, comprising:

• a first body including a first port in a seating plane, the first port having a particular geometric shape;
• a second body including a second port in a seating plane, the second port having a geometric shape identical to the first port of said first body;
• wherein the seating planes of said first and second bodies are positioned in the same valve seating plane, and wherein the first port and the second port are arranged with the same angular orientation;
• a valve plate pivotally mounted about a pivot axis, said pivot axis intersecting the same geometric location and direction of first port and the second port, wherein said valve plate pivots to contact the valve seating plane, thereby closing off the first port and the second port of said first and second bodies, respectively;
• and
• means for applying a force to said valve plate which forces said valve plate towards the valve seating plane.

A fluid blending device comprising:

• a plurality of bodies, each body including a port in a seating plane, wherein the seating planes in each of said plurality of bodies are positioned in the same valve seating plane, wherein the ports in said plurality of bodies each have the same geometrical shape, and wherein the ports in said plurality of bodies are each arranged with the same angular orientation;
• a valve plate pivotally mounted about a pivot axis, the pivot axis intersecting the same geometrical location and direction of the ports in said plurality of bodies, wherein said valve plate pivots to contact the valve seating plane, thereby closing off the ports in each of said plurality of ports;
• and
• means for applying a force to said valve plate which forces said valve plate towards said valve seating plane.