Patents by Inventor Leonard Frederick Sheldrake

Leonard Frederick Sheldrake 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).

  • Irrigation apparatus
    Patent number: 7681356
    Abstract: A method and apparatus (10) for irrigating a plant, the method including the step of placing an end of a fibrous wick (50) in communication with a source of water (21) with the wick (50) delivering the water to a moisture zone proximal to a subterranean root structure of the plant. The deliver of this water is controlled by constricting the wick (50) to a predetermined degree by means of a constriction member (30) in order that the irrigation of the plant is substantially self regulating.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: March 23, 2010
    Assignee: Sensitive Flow Systems Pty Ltd
    Inventors: Leonard Frederick Sheldrake, Craig Mounsey, Neil Davidson, Mark Gilroy, Cambell Smyth
  • Irrigation Apparatus
    Publication number: 20080035753
    Abstract: A method and apparatus (10) for irrigating a plant, the method including the step of placing an end of a fibrous wick (50) in communication with a source of water (21) with the wick (50) delivering the water to a moisture zone proximal to a subterranean root structure of the plant. The deliver of this water is controlled by constricting the wick (50) to a predetermined degree by means of a constriction member (30) in order that the irrigation of the plant is substantially self regulating.
    Type: Application
    Filed: June 24, 2005
    Publication date: February 14, 2008
    Applicant: Sensitive Flow Systems Pty Ltd
    Inventors: Leonard Frederick Sheldrake, Craig Mounsey, Neil W Davidson, Mark A Gilroy, Cambell Smyth