Patents by Inventor Paul W. O'Leary

Paul W. O'Leary 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).

  • Engine with variable length connecting rod
    Patent number: 7891334
    Abstract: A four-cycle internal combustion engine comprising a variable length connecting rod, two crank gears, and two drive gears; the first end of the connecting rod is connected to a piston; the second end of the connecting rod is connected to a yoke assembly comprising two arms, a first connecting shaft, and two second connecting shafts; the first connecting shaft connects the second end of the connecting rod to each of the yoke arms; the second end of the connecting rod and the yoke arms rotate freely about the first connecting shaft; each crank gear comprises an off-center hole; the second connecting shafts connect the yoke arms to the off-center hole of each crank gear; the yoke arms and the crank gear rotate freely about the second connecting shaft; and each crank gear is driven by a drive gear.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: February 22, 2011
    Inventor: Paul W. O'Leary
  • ENGINE WITH VARIABLE LENGTH CONNECTING ROD
    Publication number: 20100012094
    Abstract: A four-cycle internal combustion engine comprising a variable length connecting rod, two crank gears, and two drive gears; the first end of the connecting rod is connected to a piston; the second end of the connecting rod is connected to a yoke assembly comprising two arms, a first connecting shaft, and two second connecting shafts; the first connecting shaft connects the second end of the connecting rod to each of the yoke arms; the second end of the connecting rod and the yoke arms rotate freely about the first connecting shaft; each crank gear comprises an off-center hole; the second connecting shafts connect the yoke arms to the off-center hole of each crank gear; the yoke arms and the crank gear rotate freely about the second connecting shaft; and each crank gear is driven by a drive gear.
    Type: Application
    Filed: July 17, 2008
    Publication date: January 21, 2010
    Inventor: Paul W. O'Leary