Microplate filler

Fluent material handling – with receiver or receiver coacting mea – Plural filling means – For plural receivers simultaneously filled

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Details

141311R, 141329, 222 64, B65B 304

Patent

active

042627117

ABSTRACT:
An apparatus is provided for filling the wells of an antibiotic plate with different concentrations of fluid including an array of fluid containers, each having a single needle valve inserted through a stopper member which is held in an open end of the container. Each needle valve includes an inner tube for supplying pressurizing air to one end of the containers which forces the fluid through an outer tube of the needle valve and out the opposite end of the container. A length of flexible tubing connected to each of the needle valve outer tubes carries the fluid through one of a plurality of slots formed in a pinch valve assembly. The pinch valve assembly includes slide members and resilient pinch rods extending laterally from sides thereof. In a first position, the slide members are held such that the pinch rods close the flexible tubing to prevent passage of the fluid into the wells of the antibiotic plate. In a second position, the slide members are held such that the pinch rods do not closably engage the tubing but permit the passage of fluid into the wells. The resiliency of the pinch rods minimizes the criticality of providing lengths of flexible tubing having the same cross-sectional size to assure proper opening and closing of the tubing.

REFERENCES:
patent: 3014481 (1961-12-01), Rumble, Jr. et al.
patent: 4058146 (1977-11-01), Citrin
patent: 4085780 (1978-04-01), Holley

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