Liquid-recycling planter

Claim 1

A liquid recycling planter including, in combination: a reservoir portion, a potting portion and liquid delivery means coupled between said reservoir portion and said potting portion; said reservoir portion including a liquid chamber having a bottom; means for producing in said reservoir portion air pressure above atmospheric pressure; said reservoir portion including, in addition, a pressure chamber to which said means for producing greater than atmospheric pressure is coupled, said pressure chamber being separated from said liquid chamber by a lower wall, said lower wall including a lower valve responsive to increased pressure in said pressure chamber to open, whereby air and liquid flow into said liquid chamber from said pressure chamber is permitted, said pressure chamber having a cover, said cover including an upper valve, said upper valve being responsive to pressure above atmospheric pressure in said pressure chamber to close said upper valve, whereby air cannot escape therethrough into said potting portion, said upper valve being responsive to less than atmospheric pressure in said pressure chamber to open, permitting air and liquid to flow from said potting portion into said pressure chamber; said liquid delivery means being positioned for transporting liquid out of said liquid chamber to said potting portion in response to increased air pressure in said reservoir portion.