Patents by Inventor Corwin Puryk

Corwin Puryk 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).

  • Publication number: 20050020330
    Abstract: A composite threshing element, for a rotor in an agricultural harvester crop processing unit, comprising a hollow support structure with at least one outwardly extending crop engaging portion, and a forwardly extending infeed element attachment feature. The rotor comprises a drum to which crop processing elements for an infeed section and a threshing section are affixed. The threshing element is bolted to a frusto-conical portion of the rotor drum, with a portion of an infeed element bolting to the infeed element attachment feature.
    Type: Application
    Filed: July 24, 2003
    Publication date: January 27, 2005
    Inventors: Ryan Mackin, Daniel Heim, Kevin Ehrecke, Corwin Puryk, Mark Stickler
  • Patent number: 6202942
    Abstract: An apparatus is used for distributing a slurry flow to plural feed conduits. It has particular application in the injection of swine manure into the soil as fertilizer. The apparatus includes a circular manifold with a central inlet for delivering slurry to the manifold and outlet ports spaced around the outer wall of the manifold for connection to the respective feed conduits. An impeller in the manifold has back swept impeller blades mounted for rotation so that the impeller blades sweep in sequence past the outlet ports. The impeller blades produce pressurized zones in front of them as they sweep in sequence past the outlet ports. This produces a pulsating flow in the feed conduits, ameliorating blockage problems with the conduits. The impeller also includes knives that rotate around the inside of the outer wall and anvils mounted on the outer wall so the knives will act with the anvils to sever trash in the slurry flow. The knives and the anvils are oppositely inclined to produce a shearing action.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: March 20, 2001
    Assignee: Prairie Agricultural Machinery Institute
    Inventors: Gordon Hultgreen, Philip Leduc, Corwin Puryk