Plant husbandry – Plant irrigators and/or fertilizers – apparatus or method
Reexamination Certificate
2009-08-05
2010-11-02
Nguyen, T. (Department: 3644)
Plant husbandry
Plant irrigators and/or fertilizers, apparatus or method
C047S079000
Reexamination Certificate
active
07823326
ABSTRACT:
An apparatus is provided for unattended watering of plants over an extended period of time utilizing a watering system that regulates a partial vacuum to control the discharge of water to the roots of the plants. A water reservoir is provided having an encapsulated interior cavity and an exterior exposed to ambient air, and having upper and lower ends. The reservoir is located above the root level of a plant to be watered. At least one drain opening is defined in the lower end of the reservoir. The upper end of the reservoir is closed and is provided with an adjustable valve, preferably a pinch valve, and an air conduit, preferably a flexible tube, that passes through the valve and extends between the interior and the exterior of the reservoir. The valve thereby interacts with the conduit to partially obstruct air flow through it, so as to maintain a partial vacuum in the upper end of the reservoir as water drains from the lower end of the reservoir.
REFERENCES:
patent: 4194691 (1980-03-01), Birnbach et al.
patent: 4347687 (1982-09-01), Sibbel
patent: 4578897 (1986-04-01), Pazar et al.
patent: 4838310 (1989-06-01), Scott et al.
patent: 4934096 (1990-06-01), Bentvelsen
patent: 5020275 (1991-06-01), Bednarzik
patent: 5351437 (1994-10-01), Lishman
patent: 5525505 (1996-06-01), Young et al.
patent: 5542605 (1996-08-01), Campau
patent: 5597731 (1997-01-01), Young et al.
patent: 5806240 (1998-09-01), Racine
patent: 5896700 (1999-04-01), McGough
patent: 6128856 (2000-10-01), Doan
patent: 6161329 (2000-12-01), Spelt
patent: 6219963 (2001-04-01), Wang
patent: 6225915 (2001-05-01), Lobert
patent: 6345470 (2002-02-01), Slaght et al.
patent: 6568425 (2003-05-01), Gergek
patent: 6684563 (2004-02-01), Wu
patent: 7240457 (2007-07-01), Chang
patent: 2001/0023555 (2001-09-01), Buss et al.
patent: 2002/0020111 (2002-02-01), Rosenberg
patent: 2006/0032119 (2006-02-01), Amsellem
patent: 0 309 059 (1989-03-01), None
Cislo & Thomas LLP
Nguyen T.
LandOfFree
Unattended plant watering system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Unattended plant watering system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unattended plant watering system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4167812