Selectable depth water retriever

Details Selectable depth water retriever Selectable depth water retriever

1979-09-17

1981-05-12

Swisher, S. Clement

Measuring and testing

Measuring vessel

G01N 112

Patent

active

042664292

ABSTRACT:
A selectable depth water retriever including a weighted container having a threaded neck thereon which mounts a threaded cap. The cap has an opening formed in the top thereof. A perforated disc is positioned on the top of the neck of the container, and positioned between the perforated disc and a closure disc upon the cap opening is a coil spring which normally maintains the closure disc upon the cap opening until pressure at a selected water depth forces the closure disc from the cap opening to allow water to enter the container. The threaded connection of the cap upon the container allows for adjustment of the compression of the spring which in turn determines at what depth the closure disc is removed from the opening in the cap.

REFERENCES:
patent: 2155442 (1939-04-01), Parkhurst
patent: 2314372 (1943-03-01), Spilhaus
patent: 4004463 (1977-01-01), Puthoff

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