Fluid pump and cartridge

Details Fluid pump and cartridge Fluid pump and cartridge

2005-01-18

2008-11-11

Freay, Charles G (Department: 3746)

Pumps

Diverse pumps

Including rotary nonexpansible chamber type

C417S359000, C222S181300, C222S251000, C222S327000, C222S390000

Reexamination Certificate

active

07448857

ABSTRACT:
In a fluid pump and cartridge assembly, a cartridge includes a material inlet port, a material outlet port, and a feed screw. The feed screw delivers fluid to be dispensed from the fluid inlet to the outlet port. The fluid inlet is preferably elongated in a direction along a longitudinal axis of the feed screw to enhance consistency in material flow through the cartridge. The feed screw is preferably driven by a closed-loop servo motor to achieve high-performance dispensing resolution. The assembly is preferably compatible with fixed-z and floating-z cartridges.

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