Patents by Inventor Grant M. Dryer

Grant M. Dryer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4160342
    Abstract: Pots for growing plants, wherein an outer pot has an upwardly facing interior annular shoulder therearound which is disposed below a downwardly facing exterior annular shoulder of an inner pot fitted within the outer pot. The inner pot has an inwardly projecting vertical sidewall formation which provides a channel through which water may be introduced into the bottom of the outer pot. The bottom of the inner pot is spaced above the bottom of the outer pot, and the inner pot has a downwardly extending well at its center which is spaced closely above the bottom of the outer pot, and which extends below the surface of the water in the bottom of the outer pot. The bottom of the inner pot has holes therethrough through which excess water in soil in the inner pot drains into the outer pot. The bottom of the well has holes through which water rises into the well, which is filled with a material such as perlite which causes water to rise into the soil in the inner pot by adsorption.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: July 10, 1979
    Assignee: Canaird Sales Ltd.
    Inventor: Grant M. Dryer