Patents by Inventor Lawrence S. J. Grodecki

Lawrence S. J. Grodecki 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: 5601209
    Abstract: The seed metering method and apparatus utilizes a bank of individual metering discs within a pressurized singulating chamber wherein the seed cups around the peripheral edge of each disc are communicated with an air exhaust port through internal passages in the discs, thus, causing the seeds to cling to the seed cups as the discs rotate upwardly through the collection of seeds from the pressurized tank. As the seeds reach the far side of their circular path of travel on the discs, the access of the seed cups to the exhaust ports is terminated, allowing the seeds to release from the discs and drop into strategically located venturies associated with powerful conveying air streams. The venturies have the effect of sucking the released seeds instantly into the air streams so that the regular seed spacing established by the metering discs is maintained as the seeds enter the air transferring portion of the system.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: February 11, 1997
    Assignee: Morris Industries, Ltd.
    Inventors: Barry B. Barsi, Lawrence S. J. Grodecki