Patents by Inventor Nathan I. Klinefelter

Nathan I. Klinefelter 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).

  • Device for pumping out sanded in crab pots
    Patent number: 4073079
    Abstract: A nozzle pipe has upper and lower guide rings to guide the nozzle down a pot line to the crab pot. A hydraulic pump on the pipe discharges a jet of sea water to wash away drifted sand which anchors the crab pot to the sea bottom. The pump is driven by a hydraulic motor powered by a hydraulic system on a ship whereby the hydraulic motor circuit is not affected by the sea water pressure.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: February 14, 1978
    Inventor: Nathan I. Klinefelter