Aquatic specimen retrieval frame

Details Aquatic specimen retrieval frame Aquatic specimen retrieval frame

1981-03-26

1984-05-08

Swisher, S. Clement

Measuring and testing

Sampler, sample handling, etc.

With constituent separation

43 7, 73170A, G01N 110, A01K 7304

Patent

active

044467494

ABSTRACT:
An aquatic specimen retrieval device includes a pair of collection nets, the open end of each being held by a hoop. The two hoops are hinged together and are closed in an abutting concentric relation in the pre-sampling condition, the whole being connected to a tow line. When released the flow of water past the hoops causes them to unhinge into a side by side position so that sea water is directed through the hoops into the nets. Upon completion of the sampling period, a second mechanism releases the nets from the hoops and by means of a choke line, the nets are caught and closed, preventing further sample collection.

REFERENCES:
patent: 3412498 (1968-11-01), Niskin
patent: 3461591 (1969-08-01), Brown et al.

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