Micro irrigation pump

Details Micro irrigation pump Micro irrigation pump

2008-07-08

2008-07-08

Kramer, Devon (Department: 3746)

Pumps

Expansible chamber type

Plural pumping chambers

C417S903000

Reexamination Certificate

active

10479196

ABSTRACT:
An irrigation device (FIG.1) for pumping fluids, particularly water, which can be constructed for a minimal cost and operated using only human power and having a simple and efficient mechanism making it suitable for use in undeveloped areas. The device includes a handle, contoured footpad, rocker, dual-action piston, outlet valve, and a surge chamber.

REFERENCES:
patent: 523240 (1894-07-01), Rodenbaugh
patent: 1539556 (1925-05-01), Garber
patent: 3730651 (1973-05-01), Ellis
patent: 4173431 (1979-11-01), Smith
patent: 5118265 (1992-06-01), Bearss
patent: 5363666 (1994-11-01), Tieken
patent: 5445505 (1995-08-01), Hung
patent: 5634774 (1997-06-01), Angel et al.
patent: 5651302 (1997-07-01), Mills

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