Plant husbandry – Water culture – apparatus or method – Nutrient recirculation system
Patent
1975-10-10
1977-08-02
Burr, Edgar S.
Plant husbandry
Water culture, apparatus or method
Nutrient recirculation system
47 64, A01G 3100
Patent
active
040387798
ABSTRACT:
An upstanding open top reservoir is provided and a foraminated plate is disposed within an upper portion of the reservoir with the latter and the plate including coacting structure supporting the panel or plate within the reservoir against downward displacement relative thereto. An upstanding sleeve is secured through a central portion of the plate and supported therefrom. The upper and lower ends of the sleeve include liquid outlet and liquid inlet structure, respectively, spaced above and below the plate and manually operable lift pump structure is disposed within the sleeve, includes an operator actuatable from the upper end of the sleeve and is operable, upon actuation of the operator, to lift liquid plant nutrient upwardly through the sleeve from the lower end thereof to the upper end thereof for flowing outwardly from the upper end of the sleeve through the liquid outlet structure.
REFERENCES:
patent: 1036368 (1912-08-01), Strumpf
patent: 1493727 (1924-05-01), Bennett
patent: 2175113 (1939-10-01), Fischer
patent: 2870574 (1959-01-01), Sheridan
patent: 2993300 (1961-07-01), Sawyer
patent: 3112577 (1963-12-01), Burger
patent: 3524279 (1970-08-01), Adams
patent: 3733745 (1973-05-01), Ingerstedt et al.
patent: 3830013 (1974-08-01), Lesley
Roberts, Jr. David B.
Wells Joseph L.
Burr Edgar S.
Feyrer James R.
Jacobson Harvey B.
O#Brien Clarence A.
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