Patent US4003337A successfully refreshed from Google Patents.
US4003337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fish growing tank and method
Assignee: Individual
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Filing: 1974-10-23
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Granted: 1977-01-18
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Expires: 1994-10-23
Abstract
Abstract Method and apparatus to grow aquatic life forms, such as different species of fish or shell fish, having concentrically arranged tanks of an appropriate volume to provide an optimum rate of growth of the fish in each stage of their life. The tanks are arranged in surrounding relationship to each other and are successively larger from the inside out so that the fish may be transferred to the next larger tank without physical handling when they have reached their optimum growth for the tank in which they are disposed. Apparatus is provided to circulate water through the tanks and to control the temperature thereof to thereby provide a healthy environment for maximum growth rate of the fish.
Inventors
- 👤 Kerry Lamar Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:11
CPC Classifications
A; A01; A01K; A01K61/00; A01K61/10; A01K63/00; A01K63/04; Y; Y02; Y02A; Y02A40/00; Y02A40/80; Y02A40/81
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
87 words
Apparatus for raising aquatic life forms comprising: a tank; a plurality of concentric tank walls of progressively larger radius in said tank forming annular compartments of increasing volume, said tank walls inwardly of the outer wall, each having an opening formed therein to allow movement of aquatic life forms between the compartments; a plurality of doors; means pivotally securing a door over each of said openings; said means arranged such that each door pivots inwardly of each compartment to form a transverse barrier between adjacent tank walls.
Claim 2
Dependent Claim
87 words
Apparatus for raising aquatic life forms comprising: a tank; a plurality of concentric tank walls of progressively larger radius in said tank forming annular compartments of increasing volume, said tank walls inwardly of the outer wall, each having an opening formed therein to allow movement of aquatic life forms between the compartments; a plurality of doors; means pivotally securing a door over each of said openings; said means arranged such that each door pivots inwardly of each compartment to form a transverse barrier between adjacent tank walls.
Claim 3
Independent Claim
117 words
A method of raising aquatic life forms comprising the steps of: providing a plurality of concentrically arranged compartments in a tank, said compartments being progressively greater in volume, there being a door openable between adjacent compartments; circulating water through said compartments; placing small aquatic life forms in the smaller compartment; opening the doors to form a barrier in each compartment to direct the aquatic life forms through the openings provided by said doors; herding the aquatic life forms through the doors as they reach the stage of growth permitted by the volume of the respective compartments from the smallest to the largest; and removing the aquatic life forms from the outermost compartment upon reaching a predetermined size.
Claim 4
Independent Claim
117 words
A method of raising aquatic life forms comprising the steps of: providing a plurality of concentrically arranged compartments in a tank, said compartments being progressively greater in volume, there being a door openable between adjacent compartments; circulating water through said compartments; placing small aquatic life forms in the smaller compartment; opening the doors to form a barrier in each compartment to direct the aquatic life forms through the openings provided by said doors; herding the aquatic life forms through the doors as they reach the stage of growth permitted by the volume of the respective compartments from the smallest to the largest; and removing the aquatic life forms from the outermost compartment upon reaching a predetermined size.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |