Patents by Inventor John C. Woolpert

John C. Woolpert 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: 4145841
    Abstract: An upper planter is expanded horizontally and vertically by connecting its large lower open end to an upper open end of a lower planter. A lower open end of a lower planter connects to a combination base and water tray. Screw threads attached to the planters and base cooperate to enable selective connecting and disconnecting. The shape of the continuous cavity formed within separate and connected planters provides room for the natural downward and outward extension of a growing plant root system.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: March 27, 1979
    Inventor: John C. Woolpert
  • Patent number: 3933415
    Abstract: A painting system has a container and a flexible wall with a source of pressure on the flexible wall for extending the flexible wall toward the paint and forcing paint through an opening, a valve and a conducting tube into an applicator. A membrane is fitted inside a container, and a cover is placed over the container. Ordinary water pressure from a tap is fed through the hose into the membrane area forcing the membrane toward the paint, and forcing the paint from the container. In one applicator, paint is fed into a hollow tube which is turnable to align openings in a tube wall with distributors which communicate the paint to a plurality of tubes. Paint flows through the selected tubes through an array of openings in paint distributing surfaces. A relatively narrow, pointed surface extends outward from a relatively large circular surface. An auxiliary distributing surface extends perpendicularly to the pointed surface. A sponge roller is provided with a fitted cover and is positioned over a foraminous tube.
    Type: Grant
    Filed: May 11, 1973
    Date of Patent: January 20, 1976
    Inventor: John C. Woolpert