Patents by Inventor James Dunstan

James Dunstan 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).

  • Air seeder venting system
    Patent number: 8684636
    Abstract: An air seeder venting system comprising a filter screen mounted in a distribution head of an air seeder for separating seeds from air fed from a supply conduit, the distribution head having an inlet in communication with the supply conduit, a plurality of seed outlets in communication with seeding lines, and an air exhaust, wherein the filter screen is located so as to have at an upstream side the inlet and the plurality of seed outlets, and at a downstream side the air exhaust.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: April 1, 2014
    Inventor: James Dunstan
  • Air Seeder Venting System
    Publication number: 20120230779
    Abstract: An air seeder venting system comprising a filter screen mounted in a distribution head of an air seeder for separating seeds from air fed from a supply conduit, the distribution head having an inlet in communication with the supply conduit, a plurality of seed outlets in communication with seeding lines, and an air exhaust, wherein the filter screen is located so as to have at an upstream side the inlet and the plurality of seed outlets, and at a downstream side the air exhaust.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 13, 2012
    Inventor: James Dunstan