Plant husbandry – Receptacle for growing medium – Irrigator
Patent
1990-02-20
1991-02-19
Hafer, Robert A.
Plant husbandry
Receptacle for growing medium
Irrigator
47 66, 47 59, A01G 2500
Patent
active
049931865
ABSTRACT:
The self-watering planter has two mantles insertable into each other, forming an annular space therebetween to define a soil space inside an inner mantle and a water space in communication with the soil space for bringing the water from the water space into the soil space. A channel is formed in the annular space defined by the mantles and connected to the water space. An opening is provided in the wall of an outer mantle for supplying the water through the channel to the water space. An arm member is movable longitudinally in the channel along a guide formed in at least one of the mantles and a float member is connected to the arm member for adjusting its position depending on the amount of water in the water space. A flap is formed in the upper part of the arm member for closing the opening upon the water space being fully filled. The float member is eccentrically fixed to the arm member such that the buoyancy acting on the float member acts also on the arm member and the flap revolving them towards the outer mantle wall.
REFERENCES:
patent: 32942 (1861-07-01), Griffin
patent: 661411 (1900-11-01), Lonitz
patent: 2084005 (1937-06-01), Richards
patent: 2249197 (1941-07-01), Brundin
patent: 4171593 (1979-10-01), Bigglestone
patent: 4270309 (1981-06-01), Baumann
patent: 4663884 (1987-05-01), Zeischegg et al.
patent: 4756121 (1988-07-01), Wild
Cofsky Lynda M.
Hafer Robert A.
Sarvis Oy
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