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US 4,351,438 AGranted
Apparatus for analyzing a fish population
OwnerKenneth E. Mortoninventor
Life of this patent
Estimating the term…
Abstract
Apparatus for analyzing a fish population. The apparatus includes an elevated tank which receives fish transferred from a pond. Fish travel from this tank and by gravity through a fish grader which separates the fish into different size ranges of fish. Displacement weighing tanks are included to enable the weight and number of fish in a selected size range to be determined.
Claims9
Apparatus for analyzing a fish population comprising:
- an elevated tank for holding a volume of water,
- fish-transfer means for transferring fish from a pond containing the fish population into the tank,
- fish-grading means operable to sort fish and separate such according to size,
- fish-passage means connecting the tank and fish-grading means providing a path for the passage of fish from the tank to said grading means,
- and means within said tank for regulating the concentration of fish within said tank adjacent where said fish-passage means connects with said tank.
2 more elements
A mobile unit adapted to be moved to a fish-rearing pond to enable an analysis of the fish population in said pond comprising:
- a wheel supported frame adapted to be moved over the ground,
- a fish-collecting tank supported in an elevated position on said frame having a fish outlet adjacent the top thereof,
- fish-grading means operable to sort fish and separate such according to size, said means having an inlet and multiple outlets disposed below said inlet, different outlets providing for the discharge of fish of different sizes from said grading means,
- said inlet of said grading means being located below said outlet of said collecting tank, and
- gravity-operated means extending from said fish outlet of said tank to the inlet of said grading means providing a path for the passage of fish from the tank to the grading means.
2 more elements
Dependencies are inferred from the claim text.