A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
A01G 27/00 (2006.01) A01G 25/16 (2006.01)
Patent
CA 2066687
17 A B S T R A C T The device for determining the quantity of water required by a cultivation medium placed in a tray (100), comprises a vertically disposed measuring wheel (10) mounted on a vertical partition (106) in such a manner as to be free to rotate about a horizontal axis (19), while being unbalanced. The bottom portion of the measuring wheel (10) is situated a few millimeters from the bottom of the tank of the tray. The measuring wheel comprises a first portion (14) which is not very hydrophilic and which has a mean relative density of less than unity, and a second portion provided with hydrophilic means (13) that cause the unbalance of the wheel to vary as a function of the quantity of water retained in the hydrophilic means (13). The measuring device includes display means (15) for displaying the angular position of the measuring wheel (10), thereby providing an indication of the watering requirements of the medium.
Chamoulaud Michel
Sim & Mcburney
LandOfFree
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