Stand-alone mechanical device for controlled watering

Details Stand-alone mechanical device for controlled watering Stand-alone mechanical device for controlled watering

2011-04-12

2011-04-12

Schneider, Craig M (Department: 3753)

Fluid handling

Ambient condition change responsive

For controlling soil irrigation

C047S048500, C047S079000

Reexamination Certificate

active

07921865

ABSTRACT:
The invention concerns an exclusively mechanical stand-alone device for controlled watering by sprinkling, wherein a soil simulating member, having an absorbent body associated with a reclinable cup arranged beneath, contributes to determination of the interval between two watering operations. A balance arm, bearing the absorbent body and an annular magnet, is mounted and balanced by a compressed spring, contributing to the determination of the opening and closing times of a valve. The valve includes a hydraulic relay with a nozzle triggering its opening or closure, in response to the displacement of the magnet field. An impermeable sleeve encloses the core and the nozzle. A sliding canopy enables one of the parameters determining the duration of the watering operation to be adjusted. A thermostatic element has an adjustable position preventing watering in sunshine. The device is mounted rotating on a pivot including the base of the sleeve and a tail unit.

REFERENCES:
patent: 3244372 (1966-04-01), Hanner
patent: 4055200 (1977-10-01), Lohoff
patent: 5269337 (1993-12-01), Goldsmith et al.
patent: 6269563 (2001-08-01), Dagan
patent: 1270671 (1961-09-01), None
patent: 1380569 (1964-12-01), None
patent: 2416645 (1979-09-01), None
patent: 2856239 (2004-12-01), None

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