Fluid withdrawal and instillation device

Details Fluid withdrawal and instillation device Fluid withdrawal and instillation device

1983-09-21

1985-08-06

Artis, Henry K.

Fluent material handling, with receiver or receiver coacting mea

Filling or refilling of dispensers

By operation of means causing or controlling dispensing

141 29, 141285, 141 98, B65B 302

Patent

active

045329699

ABSTRACT:
A fluid transfer device utilizing a rotatable value assembly attached to two hollow core needles, which employs atmospheric air pressure to assist with the withdrawal of fluid from a first rubber stoppered container and during instillation of fluid into a second rubber stoppered container, permits air displaced from the second container to be evacuated therefrom. The device enables fluid to be withdrawn from a stoppered bottle with ease by eliminating the build up of a negative pressure in the bottle. Conversely, during instillation of fluid into a stoppered bottle, the device eliminates the build up of a positive pressure therein by the venting of displaced air.

REFERENCES:
patent: 3650305 (1972-03-01), Hendershot
patent: 3941171 (1976-03-01), Ogle
patent: 4253501 (1981-03-01), Ogle

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