Patents by Inventor John David Kirk

John David Kirk 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).

  • Piston with two pivot bearings and twin crankshaft piston engine
    Patent number: 8360028
    Abstract: A piston for a piston-cylinder unit, the piston including two pivot bearings for pivotably supporting two connecting rods at the piston about two connecting rod pivot two connecting rod pivot axes extending in parallel to one another and laterally offset from one another; the two pivot bearings provided at a bearing element which is pivotably supported about a bearing element pivot axis at the piston; and the bearing element pivot axis extending parallel to the two connecting rod pivot axes.
    Type: Grant
    Filed: September 4, 2010
    Date of Patent: January 29, 2013
    Assignee: Neander Motors
    Inventors: Helmut Betzmeir, John David Kirk
  • Piston with two pivot bearings and twin crankshaft piston engine
    Publication number: 20120055443
    Abstract: A piston for a piston-cylinder unit, the piston including two pivot bearings for pivotably supporting two connecting rods at the piston about two connecting rod pivot two connecting rod pivot axes extending in parallel to one another and laterally offset from one another; the two pivot bearings provided at a bearing element which is pivotably supported about a bearing element pivot axis at the piston; and the bearing element pivot axis extending parallel to the two connecting rod pivot axes.
    Type: Application
    Filed: September 4, 2010
    Publication date: March 8, 2012
    Applicant: NEANDER MOTORS AG
    Inventors: Helmut Betzmeir, John David Kirk