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Title: Energy efficient fluid powered linear actuator with variable area and concentric chambers

Abstract

Hydraulic actuation systems having concentric chambers, variable displacements and energy recovery capabilities include cylinders with pistons disposed inside of barrels. When operating in energy consuming modes, high speed valves pressurize extension chambers or retraction chambers to provide enough force to meet or counteract an opposite load force. When operating in energy recovery modes, high speed valves return a working fluid from extension chambers or retraction chambers, which are pressurized by a load, to an accumulator for later use.

Inventors:
;
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1332267
Patent Number(s):
9494168
Application Number:
14/468,629
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F15 - FLUID-PRESSURE ACTUATORS F15B - SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Aug 26
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION

Citation Formats

Lind, Randall F., and Love, Lonnie J. Energy efficient fluid powered linear actuator with variable area and concentric chambers. United States: N. p., 2016. Web.
Lind, Randall F., & Love, Lonnie J. Energy efficient fluid powered linear actuator with variable area and concentric chambers. United States.
Lind, Randall F., and Love, Lonnie J. Tue . "Energy efficient fluid powered linear actuator with variable area and concentric chambers". United States. https://www.osti.gov/servlets/purl/1332267.
@article{osti_1332267,
title = {Energy efficient fluid powered linear actuator with variable area and concentric chambers},
author = {Lind, Randall F. and Love, Lonnie J.},
abstractNote = {Hydraulic actuation systems having concentric chambers, variable displacements and energy recovery capabilities include cylinders with pistons disposed inside of barrels. When operating in energy consuming modes, high speed valves pressurize extension chambers or retraction chambers to provide enough force to meet or counteract an opposite load force. When operating in energy recovery modes, high speed valves return a working fluid from extension chambers or retraction chambers, which are pressurized by a load, to an accumulator for later use.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {11}
}

Works referenced in this record:

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patent, November 1967


Multiple-cylinder Telescopic Actuator
patent, September 1971


Air Pressure Actuator
patent, December 1973


Tandem hydraulic actuator
patent, October 1981


Hydraulic actuator for well pumps
patent, November 1983


Piston assembly and method
patent, February 1992


Accumulator for energy storage and delivery at multiple pressures
patent, October 1999


Hydraulic circuit with a return line metering valve and method of operation
patent, October 2002


Hydraulic regeneration system
patent, June 2004


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patent, September 2006


Excavator and a machine for material transfer
patent, October 2008


Cylinder with internal pushrod
patent, October 2008


Digital Hydraulic system
patent, January 2009


Energy recovery system
patent, December 2009


Energy recovery and reuse methods for a hydraulic system
patent, November 2010


Energy recovery and reuse techniques for a hydraulic system
patent, March 2011


Digital hydraulic system
patent, May 2015


Energy Saving System for Hydraulic Excavator
journal, January 2005