Patents by Inventor Steve Anstey

Steve Anstey 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).

  • Single shaft dual expansion internal combustion engine
    Patent number: 9574491
    Abstract: A single-shaft dual expansion internal combustion engine includes first and second power cylinders and an expander cylinder. The cylinder head fluidly couples the first and second power cylinders and the expander cylinder. First and second power pistons reciprocate in the first and second power cylinders and connect to a first crankpin of the crankshaft. A multi-link connecting rod assembly includes a rigid main arm supporting a first pivot pin, a second pivot pin and a third pivot pin. The first pivot pin connects to an expander piston reciprocating in the third cylinder. The third pivot pin couples to a first end of a swing arm, and a second end of the swing arm rotatably couples to a fourth pivot pin that couples to a distal end of a rotating arm that attaches to a rotating shaft coupled to rotation of the crankshaft.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Russell P. Durrett, Paul M. Najt, Peter Andruskiewicz, Steve Miller, Ian Whiteside, Steve Anstey
  • SINGLE-SHAFT DUAL EXPANSION INTERNAL COMBUSTION ENGINE
    Publication number: 20160222877
    Abstract: A single-shaft dual expansion internal combustion engine includes first and second power cylinders and an expander cylinder. The cylinder head fluidly couples the first and second power cylinders and the expander cylinder. First and second power pistons reciprocate in the first and second power cylinders and connect to a first crankpin of the crankshaft. A multi-link connecting rod assembly includes a rigid main arm supporting a first pivot pin, a second pivot pin and a third pivot pin. The first pivot pin connects to an expander piston reciprocating in the third cylinder. The third pivot pin couples to a first end of a swing arm, and a second end of the swing arm rotatably couples to a fourth pivot pin that couples to a distal end of a rotating arm that attaches to a rotating shaft coupled to rotation of the crankshaft.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 4, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Russell P. Durrett, Paul M. Najt, Peter Andruskiewicz, Steve Miller, Ian Whiteside, Steve Anstey