Irrigation controller

Details Irrigation controller Irrigation controller

1998-05-20

2000-08-15

Chambers, A. Michael

Fluid handling

Processes

137 783, 239 64, 239 69, 239 70, A01G 2516

Patent

active

061020613

ABSTRACT:
An irrigation controller modifies sophisticated irrigation protocols using an extremely simple user control. In one aspect of a particularly preferred class of embodiments, the user control includes a simple "more/less" (increase/decrease) adjustment. In another aspect of preferred embodiments, the controller automatically determines appropriate irrigation amounts, start times, durations, and frequencies. Such automatic determination may advantageously be based in part on the more/less adjustment, and in part on an external signal, such as that transmitted by a radio transmitter.

REFERENCES:
patent: 4396149 (1983-08-01), Hirsch
patent: 4545396 (1985-10-01), Miller et al.
patent: 4548225 (1985-10-01), Busalacchi
patent: 4646224 (1987-02-01), Ransburg et al.
patent: 5208855 (1993-05-01), Marian
patent: 5337957 (1994-08-01), Olson
patent: 5444611 (1995-08-01), Woytowitz et al.

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