Patents by Inventor Christina R. Butler

Christina R. Butler 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).

  • Dripless rotary sprinkler and related method
    Patent number: 8336788
    Abstract: A rotary sprinkler includes a housing supporting a nozzle and a nozzle tube, the nozzle tube located axially adjacent an orifice of the nozzle with an axial gap therebetween. A water-deflection plate assembly is carried by the nozzle tube for rotation relative to the nozzle tube. The housing is formed with an exterior substantially annular funnel surrounding the nozzle and forming a collection trough for collection of excess water, and the housing formed with one or more apertures directing excess water in the collection trough to an internal area surrounding the orifice to be aspirated through the gap into a stream of water emitted from the nozzle orifice and through the nozzle tube such that the excess water is distributed by the water-deflection plate along with water emitted from the nozzle orifice.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: December 25, 2012
    Assignee: Nelson Irrigation Corporation
    Inventors: Lee A. Perkins, Craig B. Nelson, Christina R. Butler
  • DRIPLESS ROTARY SPRINKLER AND RELATED METHOD
    Publication number: 20110031325
    Abstract: A rotary sprinkler includes a housing supporting a nozzle and a nozzle tube, the nozzle tube located axially adjacent an orifice of the nozzle with an axial gap therebetween. A water-deflection plate assembly is carried by the nozzle tube for rotation relative to the nozzle tube. The housing is formed with an exterior substantially annular funnel surrounding the nozzle and forming a collection trough for collection of excess water, and the housing formed with one or more apertures directing excess water in the collection trough to an internal area surrounding the orifice to be aspirated through the gap into a stream of water emitted from the nozzle orifice and through the nozzle tube such that the excess water is distributed by the water-deflection plate along with water emitted from the nozzle orifice.
    Type: Application
    Filed: August 7, 2009
    Publication date: February 10, 2011
    Applicant: Nelson Irrigation Corporation
    Inventors: Lee A. Perkins, Craig B. Nelson, Christina R. Butler