Constant suction pump for high performance liquid...

Details Constant suction pump for high performance liquid... Constant suction pump for high performance liquid...

F - Mech Eng,Light,Heat,Weapons

04

B

103/72

F04B 1/12 (2006.01) F04B 11/00 (2006.01)

Patent

CA 1275199

Abstract of the invention A multi-lobe gradient cam for a high performance liquid chromatography pump for controlling proportions of HPLC solvents on the low pressure side of the pump. The gradient cam is non-concentric, and has an upward or draw gradient ridge over a majority of its circumference and a downward or thrust gradient ridge over a minority of its circumference. In operation, the cam is designed to be used with two followers, located 180° apart, which follow along the cam's gradient. The unique cut of the multi-lobe cam insures a constant suction on the inlet or suction side of the cam during the entire pump cycle.

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