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Title: Aquatic-life depletion-sampling device and technique
Claims: I claim: 1. An aquatic life sampling device comprising in combination: a vessel structure having substantially upright circumscribing walls forming a substantially downwardly-facing open bottom and forming an upper-opening in an upper portion thereof, an upper-opening closure means for normally closing the upper-opening and for intermittently gaining access to enclosed space within the circumscribing walls, at least forwardly-located portions of the circumscribing walls comprising fine meshed screen and rearwardly-located portions of the circumscribing walls including a barrier plate having a through-passage outlet port formed therein, a funnel element having a forward structure thereof forming an enlarged inlet and a rearward structure thereof forming a narrowed outlet, the forward structure being attached and sealed to said rearwardly-located portion with said enlarged inlet being aligned in flow-communication with said outlet port, and bag-fastening means for mounting an open-mouthed porous sample bag on said rearward structure in flow communication with said narrowed outlet into an open mouth of the mounted sample bag. 2. A aquatic life sampling device of claim 1, in which said rearwardly-located portion of the circumscribing walls is concave in at least a horizontal plane, said outlet port being substantially centered within a concave portion of said rearwardly-located portion of the circumscribing walls. 3. An aquatic life sampling device of claim 2, including a substantially circular structure forming a downwardly-directed cutting edge, mounted on and along a bottom of said circumscribing walls with the circular structure substantially circumscribing said open bottom. 4. An aquatic life sampling device of claim 3, in which said vessel structure is substantially cylindrical in shape. 5. An aquatic life sampling device of claim 4, in which said funnel element tapers from said enlarged inlet to said narrowed outlet. 6. An aquatic life sampling device of claim 5, including a latching means for intermittently attaching the rearward structure to an upper edge of said vessel structure. 7. An aquatic life sampling device of claim 1, including a latching means for intermittently attaching the rearward structure to an upper edge of said vessel structure. 8. An aquatic life sampling device of claim 1, including a substantially circular structure forming a downwardly-directed cutting edge, mounted on and along a bottom of said circumscribing walls with the circular structure substantially circumscribing said open bottom. 9. An aquatic life sampling device of claim 1, in which said vessel structure is substantially cylindrical in shape. 10. An aquatic life sampling device of claim 1, in which said funnel element tapers from said enlarged inlet to said narrowed outlet. 11. A method for aquatic life depletion sampling comprising in combination: placing a mouth of an open-bottom vessel having a lateral screened-wall and an oppositely-positioned rearward outlet port and attached collecting funnel element and sampler bag porous to water, into mouth-contact substantially sealably with a bottom surface within a body of water of a water-test area to thereby accurately circumscribe and substantially enclose therein a predetermined area of the bottom surface, and facing the lateral screened-wall toward upstream direction within said water-test area such that current brings water through the screened-wall into thereby substantially enclosed space above the predetermined area of the bottom surface, to sweep onwardly through the rearward outlet port into the collecting funnel element and sampler bag attached thereto, and thereafter agitating said bottom surface of said predetermined area sufficiently to cause plant and animal small entities to become suspended within environmental water within the vessel, whereby the entities are swept into the sampler bag. 12. A method of claim 11, including removing the bag after the suspended entities have been flushed into the bag, and replacing the bag with a second empty bag, and repeating the agitation from the same enclosed area, and thereafter removing the second bag after the suspended entities have been flushed into the bag. Other info: Inventors: Carle, Frank Louis (Warren, NJ, US) Application Number: 746083 Filing Date: 1976-11-30 Publication_date: 1977-10-25 Assignee: Primary Class(es): 73/863.25 37/313, 37/318, 43/4, 73/864.33 Other Classes: US Patent Ref:
Other Refs:
Primary Examiner: Yasich, Daniel M. Assistant Examiner: Attorney: |
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