Expansion Between Relatively Movable Working Members Patents (Class 91/159)
  • Patent number: 12180806
    Abstract: A subsurface safety valve actuation system in well tubing comprising a safety valve, piston assembly, motor, pump, spring, reservoir, first valve, and second valve configured to provide pressure in a chamber of the piston assembly that drives the safety valve to an open position, retain pressure in the chamber that retains the safety valve in the open position, release pressure in the chamber via a first hydraulic release path and/or a second hydraulic release path between the chamber and the reservoir that extends through the first valve and second valve, respectively, and the first and second hydraulic release paths being independent from each other, whereby pressure in the chamber that retains the safety valve in the open position may be released via the first or second hydraulic release path when there is a fault in the other of the first or second release path.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: December 31, 2024
    Assignee: Moog Inc.
    Inventors: David Geiger, Daniel J. Halloran, Jeff Blasz, In Chul Jang, Joseph Giangreco-Marotta
  • Publication number: 20140360348
    Abstract: A rotary actuator (100) having a reference structure (110), an output member (113) arranged for rotary movement relative to the reference structure, a first linear motor (116) arranged to selectively apply an output force urging a first motor member (119) and a second motor member (122) apart along a generally linear direction, in which the first linear motor is configured and arranged to cause a torque between the output member and the reference structure in a first direction, and second linear motor (137) arranged to selectively apply an output force urging a second linear motor first member (134) and a second motor member (137) apart along a generally linear direction, in which the second linear motor is configured and arranged to cause a torque between the output member and the reference structure in a direction opposite to the first direction.
    Type: Application
    Filed: February 9, 2013
    Publication date: December 11, 2014
    Inventors: John Kopp, Eric D. Burns
  • Patent number: 8857175
    Abstract: The present invention provides an improved two-stage actuator (20) that broadly includes: a first cylinder (21); an intensifier piston (22) mounted in the first cylinder for sealed sliding movement therealong, the intensifier piston having a large-area surface (26) exposed to ambient pressure, and having a small-area surface (30); a second cylinder (23) having an end wall (36); an actuator piston (24) mounted in the second cylinder for sealed sliding movement therealong; an actuator rod (39) connected to the actuator piston for movement therewith and having an intermediate portion sealingly penetrating the second cylinder end wall; the actuator piston having a large-area surface (27) and a small-area surface (37), an intermediate chamber (35) communicating the intensifier piston small-area surface with the actuator piston large-area surface; and an incompressible fluid in the chamber; whereby ambient pressure (i.e.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: October 14, 2014
    Assignee: Moog Inc.
    Inventor: David Geiger
  • Publication number: 20110232474
    Abstract: The present invention provides an improved two-stage actuator (20)? that broadly includes: a first cylinder (21); an intensifier piston (22) mounted in the first cylinder for sealed sliding movement therealong, the intensifier piston having a large-area surface (26, A1) exposed to ambient pressure, and having a small-area surface (30, A2); a second cylinder (23) having an end wall (36); an actuator piston (24) mounted in the second cylinder for sealed sliding movement therealong; an actuator rod (39) connected to the actuator piston for movement therewith and having an intermediate portion sealingly penetrating the second cylinder end wall; the actuator piston having a large-area surface (27, A3) and a small-area surface (37, A4), an intermediate chamber (35) communicating the intensifier piston small-area surface with the actuator piston large-area surface; and an incompressible fluid in the chamber; whereby ambient pressure (i.e.
    Type: Application
    Filed: December 5, 2008
    Publication date: September 29, 2011
    Applicant: MOOG INC.
    Inventor: David Geiger
  • Patent number: 4852464
    Abstract: To allow a telescoping cylinder that is ordinarily operated in a fixed sequence to also be operated in a simultaneous mode, the first stage (12) of the cylinder is provided with an end plate (126), the cylindrical gap (114) in the first stage communicates directly with the space (133) inside the second stage (13) that is sealed off by the end plate, and a third cylindrical gap (124 & 124'), which is created in the second stage out of the sections (124 & 124') that are sealed off (1331) and derive from the end plate in the first stage, is provided with a pressure-medium line (23) that communicates through a telescoping passage (1131 & 1232) between the floor (111) of the cylinder (110 and the end plate (126) in the first stage, specifically satisfying the demand that the cylindrical gap (114) in the first stage (12) and the space (133) inside the first stage are equal in volume.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: August 1, 1989
    Assignee: Montan-Hydraulik GmbH
    Inventors: Gunter Bartmann, Gerd Brackelmann
  • Patent number: 4741246
    Abstract: A multiple stage telescoping cylinder assembly, which provides full stage selection capability without the need for external hoses or reels, comprises a base; an inner cylinder attached at its rearward end to the base and first and second stage cylinders of successively greater diameter mounted on the inner cylinder in telescoping relationship for extension during their forward strokes and retraction during their rearward strokes, the first and second stage cylinders each having an extend facing surface relatively adjacent its forward end for fluid pressure to contact to effect extension thereof and a retract facing surface relatively adjacent its rearward end for fluid pressure to contact to effect retraction thereof; and plural fluid passages for directing fluid under pressure from the rearward end of the inner cylinder forwardly through the interior of the inner cylinder and then into contact with respective ones of the facing surfaces for selective extension and retraction of the first and second stage cy
    Type: Grant
    Filed: August 7, 1986
    Date of Patent: May 3, 1988
    Assignee: Universal Hydraulics, Inc.
    Inventor: Nikolay K. Padarev