Actuator for liquid ejection

Details Actuator for liquid ejection Actuator for liquid ejection

1991-01-11

1992-02-04

Skaggs, H. Grant

Dispensing

With discharge assistant

Fluid pressure

22240225, 222518, 222501, 239337, 239353, B65D 8300

Patent

active

050853538

ABSTRACT:
An actuator for liquid ejection which is provided with a plug for closing the ejection spout disposed at the distal portion thereof. This actuator is capable of preventing a residual liquid which is left inside the actuator after an ejection operation from being contacted with an outer atmosphere, thereby preventing the denaturing or degradation of the liquid. Further, it is capable of preventing an ejection spout from being stopped up and of preventing a filmy cover or block to be made. This plug is mounted on an elastic rod-like member disposed in and along the liquid-discharging passage, and is adapted to be moved backward, thus opening the ejection spout as the elastic rod-like member is forced to bend by an actuating rod when the actuator is pushed downward.

REFERENCES:
patent: 3568933 (1971-03-01), Benson
patent: 3712517 (1973-01-01), Davenport
patent: 3785335 (1974-01-01), Wagner
patent: 3889856 (1975-06-01), Morane
patent: 4860933 (1989-08-01), Morane et al.

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