Patents by Inventor Malcolm J. Cliff

Malcolm J. Cliff 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 rod assembly
    Patent number: 10288111
    Abstract: A piston rod assembly for a reciprocating compressor. The piston rod assembly may include a piston rod having a longitudinal axis and forming a piston rod neck and a piston rod shoulder. The piston rod may include a first end integral or coupled with a piston head and a second end axially opposing the first end and configured to couple with a crosshead including a flange. An inner surface of the flange may have a Brinell hardness. The piston rod assembly may also include a cylindrical sleeve disposed circumferentially about the piston rod neck. The cylindrical sleeve may have a lower Brinell hardness than the Brinell hardness of the inner surface of the flange.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: May 14, 2019
    Assignee: DRESSER-RAND COMPANY
    Inventors: Scott J. Delmotte, Waldo E. Burdick, Jr., Jonathan Kio, Daniel Brackley, Angus Andrews, Malcolm J. Cliff
  • Piston assembly
    Patent number: 10082207
    Abstract: A piston assembly may include a piston rod and a piston disposed on the piston rod. The piston may include a frame end cap defining a through-bore for receiving the piston rod, and the frame end cap may form a first end of the piston. The piston may include an outer end cap defining a through-bore for receiving the piston rod, and the outer end cap may form a second end of the piston. The piston may also include a center support defining a through-bore for receiving the piston rod. The center support may be disposed between the frame end cap and the outer end cap, and an outer surface of the piston rod and an inner circumferential surface of the center support may define a radial gap.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: September 25, 2018
    Assignee: DRESSER-RAND COMPANY
    Inventors: Elmer B. Eaton, Jr., Malcolm J. Cliff, John K. Sandham, Waldo E. Burdick, Jr.
  • Piston Rod Assembly
    Publication number: 20170284453
    Abstract: A piston rod assembly for a reciprocating compressor. The piston rod assembly may include a piston rod having a longitudinal axis and forming a piston rod neck and a piston rod shoulder. The piston rod may include a first end integral or coupled with a piston head and a second end axially opposing the first end and configured to couple with a crosshead including a flange. An inner surface of the flange may have a Brinell hardness. The piston rod assembly may also include a cylindrical sleeve disposed circumferentially about the piston rod neck. The cylindrical sleeve may have a lower Brinell hardness than the Brinell hardness of the inner surface of the flange.
    Type: Application
    Filed: February 22, 2017
    Publication date: October 5, 2017
    Inventors: Scott J. Delmotte, Waldo E. Burdick, JR., Jonathan Kio, Daniel Brackley, Angus Andrews, Malcolm J. Cliff
  • PISTON ASSEMBLY
    Publication number: 20160223083
    Abstract: A piston assembly may include a piston rod and a piston disposed on the piston rod. The piston may include a frame end cap defining a through-bore for receiving the piston rod, and the frame end cap may form a first end of the piston. The piston may include an outer end cap defining a through-bore for receiving the piston rod, and the outer end cap may form a second end of the piston. The piston may also include a center support defining a through-bore for receiving the piston rod. The center support may be disposed between the frame end cap and the outer end cap, and an outer surface of the piston rod and an inner circumferential surface of the center support may define a radial gap.
    Type: Application
    Filed: December 7, 2015
    Publication date: August 4, 2016
    Applicant: DRESSER-RAND COMPANY
    Inventors: Elmer B. Eaton, JR., Malcolm J. Cliff, John K. Sandham, Waldo E. Burdick, JR.