Low pressure, low head buoyant piston pump for water purificatio

Details Low pressure, low head buoyant piston pump for water purificatio Low pressure, low head buoyant piston pump for water purificatio

1991-05-09

1992-07-21

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

417545, 4175551, F04B 2104, F04B 1700

Patent

active

051318202

ABSTRACT:
A continuously cycling, low pressure, low head pump utilized for supplying periodic surges of water across an algal turf closely associated with the surface of a body of water, this pump comprising a generally vertically disposed cylinder whose lower end resides below the surface of the body of water and whose upper end is disposed above the surface of the body of water and slightly above the algal turf. An opening is provided adjacent the top of the cylinder, through which water, on occasion, can flow onto the algal turf, and a lightweight, buoyant piston is operatively disposed in the cylinder. A power applying device is utilized for forcing the piston downwardly, such that it moves from a partially submerged, floating position adjacent the upper end of the cylinder, to the lower end of the cylinder. When the piston is suddenly released, it rapidly rises to the upper end of the cylinder, and in doing so, pushes a quantity of water out of the opening in the upper part of the cylinder, and onto the algal turf.

REFERENCES:
patent: 28405 (1860-05-01), Dale
patent: 449548 (1891-03-01), Martin
patent: 458913 (1891-09-01), Morgan et al.
patent: 640871 (1900-01-01), Bunimowitsch et al.
patent: 979567 (1910-12-01), Rosenthal
patent: 1531233 (1925-03-01), Davis
patent: 1532775 (1925-04-01), Page
patent: 3547083 (1970-12-01), Peterson
patent: 4333263 (1982-06-01), Adey
patent: 4534706 (1985-08-01), Palm et al.

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