Patents by Inventor Liqun Chi

Liqun Chi 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).

  • Patent number: 10364548
    Abstract: A method of controlling machines for performing operations at a worksite is disclosed. The method includes receiving pre-construction terrain data, design terrain data, and resource data and then defining a plurality of constraints based on the data. Operations of the machines are simulated based on the data. The method includes estimating process variables associated with the operations and defining and scheduling tasks to be performed by the machines. The method includes collecting real time data from the worksite and updating the estimated process variables and the scheduled tasks of the machines based on the collected real time data. Instructions are then provided to the machines for executing the tasks.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 30, 2019
    Assignee: Caterpillar Inc.
    Inventors: Liqun Chi, Sanat A. Talmaki, Paul T. Corcoran, Scott A. Leman, Brad L. Holsapple, Mark W. Whiting, Allen J. DeClerk
  • Publication number: 20180044888
    Abstract: A method of controlling machines for performing operations at a worksite is disclosed. The method includes receiving pre-construction terrain data, design terrain data, and resource data and then defining a plurality of constraints based on the data. Operations of the machines are simulated based on the data. The method includes estimating process variables associated with the operations and defining and scheduling tasks to be performed by the machines. The method includes collecting real time data from the worksite and updating the estimated process variables and the scheduled tasks of the machines based on the collected real time data. Instructions are then provided to the machines for executing the tasks.
    Type: Application
    Filed: October 2, 2017
    Publication date: February 15, 2018
    Applicant: Caterpillar Inc.
    Inventors: Liqun Chi, Sanat A. Talmaki, Paul T. Corcoran, Scott A. Leman, Brad L. Holsapple, Mark W. Whiting, Allen J. DeClerk
  • Patent number: 9822509
    Abstract: A method of controlling machines for performing operations at a worksite is disclosed. The method includes receiving pre-construction terrain data, design terrain data, and resource data and then defining a plurality of constraints based on the data. Operations of the machines are simulated based on the data. The method includes estimating process variables associated with the operations and defining and scheduling tasks to be performed by the machines. The method includes collecting real time data from the worksite and updating the estimated process variables and the scheduled tasks of the machines based on the collected real time data. Instructions are then provided to the machines for executing the tasks.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: November 21, 2017
    Assignee: Caterpillar Inc.
    Inventors: Liqun Chi, Sanat A. Talmaki, Paul T. Corcoran, Scott A. Leman, Brad L. Holsapple, Mark W. Whiting, Allen J. DeClerk
  • Publication number: 20170314232
    Abstract: A method of controlling machines for performing operations at a worksite is disclosed. The method includes receiving pre-construction terrain data, design terrain data, and resource data and then defining a plurality of constraints based on the data. Operations of the machines are simulated based on the data. The method includes estimating process variables associated with the operations and defining and scheduling tasks to be performed by the machines. The method includes collecting real time data from the worksite and updating the estimated process variables and the scheduled tasks of the machines based on the collected real time data. Instructions are then provided to the machines for executing the tasks.
    Type: Application
    Filed: May 2, 2016
    Publication date: November 2, 2017
    Applicant: Caterpillar Inc.
    Inventors: Liqun Chi, Sanat A. Talmaki, Paul T. Corcoran, Scott A. Leman, Brad L. Holsapple, Mark W. Whiting, Allen J. DeClerk
  • Patent number: 9534995
    Abstract: A system for determining a modulus of resilience of a work material during a compaction operation includes a processor configured to determine a work material stiffness based on a force applied to the work material and a displacement of the work material, and determine the modulus of resilience of the work material based on a relationship between the work material stiffness and the modulus of resilience of the work material.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 3, 2017
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Kristian Stoeckel, Liqun Chi, Paul Corcoran, Nicholas Oetken
  • Patent number: 9423332
    Abstract: A system for validating compaction of work material at a work site including a compaction machine. A sensor and a location sensor are associated with the compaction machine. A controller is configured to receive compaction data from the sensor and position data from the location sensor and to determine a structural parameter of the work material based on the compaction data and physical properties of the compaction machine. The controller associates the structural parameter of the work material with the position data. The controller saves structural parameters and associated position data for different locations in the work site and for different layers of work material in the work site and compares the saved structural parameters and associated position data with predetermined structural design criteria for corresponding locations and layers in the work site.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: August 23, 2016
    Assignee: Caterpillar Inc.
    Inventors: Paul T. Corcoran, Liqun Chi, Brad L. Holsapple
  • Publication number: 20160168806
    Abstract: A compactor is disclosed that has at least one roller drum configured to compact a work material. The compactor also has a memory storing a calibration system. The calibration system has a plurality of reference propelling power values, a plurality of reference ground stiffness values, and correlation information between the plurality of reference propelling power values and the plurality of reference ground stiffness values. The compactor further has a processor. The processor is configured to determine a propelling power of the compactor. The processor is also configured to compare the propelling power of the compactor with at least one of a plurality of reference propelling power values in the calibration system. The processor is further configured to determine a stiffness value of the work material based on a relationship between the propelling power of the compactor and the at least one of the plurality of reference propelling power values.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 16, 2016
    Applicant: CATERPILLAR INC.
    Inventors: Paul T. Corcoran, Liqun Chi
  • Publication number: 20160103051
    Abstract: A system for validating compaction of work material at a work site is provided including a compaction machine. A sensor and a location sensor are associated with the compaction machine. A controller is configured to receive compaction data from the sensor and position data from the location sensor and to determine a structural parameter of the work material based on the compaction data and physical properties of the compaction machine. The controller associates the structural parameter of the work material with the position data. The controller saves structural parameters and associated position data for different locations in the work site and for different layers of work material in the work site and compares the saved structural parameters and associated position data with predetermined structural design criteria for corresponding locations and layers in the work site.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 14, 2016
    Applicant: Caterpillar Inc.
    Inventors: Paul T. Corcoran, Liqun Chi, Brad L. Holsapple
  • Patent number: 9234317
    Abstract: The present disclosure considers a system and method that can predict soil compaction and machine-specific productivity rate across multiple soil conditions without requiring site-specific samples and multi-variable lab testing. The method and system disclosed here can utilize predictive algorithms combined with a soils database to predict soil response to compaction energy across a range of soil moistures for the range of compaction machines available to predict compaction performance.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 12, 2016
    Assignee: Caterpillar Inc.
    Inventor: Liqun Chi
  • Publication number: 20150362414
    Abstract: The disclosure relates to a system and method for determining a modulus of resilience of a work material during a compaction operation. The system includes a processor configured to determine a work material stiffness based on a force applied to the work material and a displacement of the work material. The processor is further configured to determine the modulus of resilience of the work material based on a relationship between the work material stiffness and the modulus of resilience of the work material.
    Type: Application
    Filed: June 11, 2014
    Publication date: December 17, 2015
    Inventors: Kristian Stoeckel, Liqun Chi, Paul Corcoran, Nicholas Oetken
  • Publication number: 20150211199
    Abstract: This disclosure describes a system and method to calculate a ground stiffness value. The system includes at least one sensor configured to sense at least one of a vertical acceleration, vertical displacement, and a force of a compactor component and a processor configured to calculate a force at a drum-ground interface in response to the at least one sensor and further configured to calculate a drum displacement in response to the at least one sensor. The processor is further configured to determine ground stiffness using the calculated force at the drum-ground interface and the drum displacement.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 30, 2015
    Applicant: Caterpillar Inc.
    Inventors: PAUL CORCORAN, LIQUN CHI
  • Patent number: 9085885
    Abstract: A water-saving toilet is made of a thermoplastic resin compound material. The material includes inorganic stuffing provided by an injection technique and includes a main body with a water outlet in the lower part and a flushing water pipe outlet in side wall of the water outlet, a water tank with a cavity at the bottom which is provided with a main pipe opening and a flushing pipe inlet opposite the water tank and communicating with the main body by the main pipe opening, a flushing pipe and a siphon pipe the upper end of which including a water inlet connected with the water outlet. A method of producing the toilet, featuring easily available and sufficient raw material, simple operation, high production efficiency, low energy consumption and environment friendly property is also provided. The toilet has fine appearance, is self-cleaning, water saving and smooth flushing.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: July 21, 2015
    Assignees: SHANGHAI HUDA INVESTMENT & DEVELOPMENT CO., LTD., QINGHAIXIWANG HI-TECH & MATERIAL CO., LTD.
    Inventor: Liqun Chi
  • Publication number: 20150088785
    Abstract: The present disclosure considers a system and method that can predict soil compaction and machine-specific productivity rate across multiple soil conditions without requiring site-specific samples and multi-variable lab testing. The method and system disclosed here can utilize predictive algorithms combined with a soils database to predict soil response to compaction energy across a range of soil moistures for the range of compaction machines available to predict compaction performance.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Applicant: Caterpillar Inc.
    Inventor: Liqun Chi
  • Patent number: 8530561
    Abstract: The invention relates to nonmetal material modified thermoplastic resin composite, comprising the following materials by weight percentages: 50-70% of filling, 25-40% of polypropylene, 3-6% of maleic anhydride modified polypropylene, 1-3% of titanium dioxide and 1-2% antioxidant. Said filling has been modified by stearic acid. The invention also provides a method for producing products like sanitary wares, hardware of sanitary wares, outdoor products, decorative pipes of external walls and decorations of public scenes using the nonmetal material modified thermoplastic resin composite. The raw materials are widely available and the preparation does not require long-time burning with high energy consumption, thus possessing the advantages such as low energy consumption, high mechanical automation degree, low labor intensity, and high yield, which is applicable to industrial mass production.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: September 10, 2013
    Assignees: Shanghai Huda Investment & Development Co., Ltd., Qinghai Xiwang Hi-Tech & Material Co., Ltd.
    Inventor: Liqun Chi
  • Patent number: 8474070
    Abstract: The invention discloses a resin-based composite sanitary ware, which is characterized in that: the sanitary ware is made by mixing up and injecting the raw materials and then solidifying the mold; and the ingredients of the raw materials and their weight ratios are as follows: unsaturated polyester resin composition 14%-30%; unsaturated polyester anti-shrinking medium 6%-14%; reinforcing fiber 11%-37%; scale stone 10%-20%; calcium carbonate 25%-40%; initiator 0.8%-2.4%. And this invention also discloses the preparation method of the sanitary ware. Compared with the current technology, the invention has the advantages of strong strength, high tenacity, perfect self-cleaning capacity and low energy consumption.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: July 2, 2013
    Assignees: Shanghai Huda Investment & Development Co., Ltd., Qinghai Xiwang Hi-Tech & Material Co., Ltd.
    Inventor: Liqun Chi
  • Publication number: 20120316279
    Abstract: The invention discloses a resin-based composite sanitary ware, which is characterized in that: the sanitary ware is made by mixing up and injecting the raw materials and then solidifying the mold; and the ingredients of the raw materials and their weight ratios are as follows: unsaturated polyester resin composition 14%-30%; unsaturated polyester anti-shrinking medium 6%-14%; reinforcing fiber 11%-37%; scale stone 10%-20%; calcium carbonate 25%-40%; initiator 0.8%-2.4%. And this invention also discloses the preparation method of the sanitary ware. Compared with the current technology, the invention has the advantages of strong strength, high tenacity, perfect self-cleaning capacity and low energy consumption.
    Type: Application
    Filed: July 27, 2012
    Publication date: December 13, 2012
    Applicants: QINGHAI XIWANG HI-TECH & MATERIAL CO., LTD., SHANGHAI HUDA INVESTMENT & DEVELOPMENT CO., LTD.
    Inventor: LIQUN CHI
  • Publication number: 20120260415
    Abstract: A water-saving toilet is made of a novel thermoplastic resin compound material. The material includes inorganic stuffing provided by an injection technique and includes a main body with a water outlet in the lower part and a flushing water pipe outlet in side wall of the water outlet, a water tank with a cavity at the bottom which is provided with a main pipe opening and a flushing pipe inlet opposite the water tank and communicating with the main body by the main pipe opening, a flushing pipe and a siphon pipe the upper end of which including a water inlet connected with the water outlet. The present invention also provides a method of producing the toilet, featuring easily available and sufficient raw material, simple operation, high production efficiency, low energy consumption and environment friendly property. The toilet has fine appearance, is self-cleaning, water saving and smooth flushing.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 18, 2012
    Inventor: Liqun CHI
  • Publication number: 20110316187
    Abstract: The invention relates to nonmetal material modified thermoplastic resin composite, comprising the following materials by weight percentages: 50-70% of filling, 25-40% of polypropylene, 3-6% of maleic anhydride modified polypropylene, 1-3% of titanium dioxide and 1-2% antioxidant. Said filling has been modified by stearic acid. The invention also provides a method for producing products like sanitary wares, hardware of sanitary wares, outdoor products, decorative pipes of external walls and decorations of public scenes using the nonmetal material modified thermoplastic resin composite. The raw materials are widely available and the preparation does not require long-time burning with high energy consumption, thus possessing the advantages such as low energy consumption, high mechanical automation degree, low labor intensity, and high yield, which is applicable to industrial mass production.
    Type: Application
    Filed: March 28, 2011
    Publication date: December 29, 2011
    Applicants: Qinghai Xiwang Hi-Tech & Material Co., LTD, Shanghai Huda Investment & Development Co., LTD
    Inventor: Liqun Chi
  • Publication number: 20110098396
    Abstract: The invention discloses a resin-based composite sanitary ware, which is characterized in that: the sanitary ware is made by mixing up and injecting the raw materials and then solidifying the mold; and the ingredients of the raw materials and their weight ratios are as follows: unsaturated polyester resin 14%-30%; polyester anti-shrinking medium 6%-14%; reinforcing fiber 11%-37%; scale stone 10%-20%; calcium carbonate 25%-40%; initiator 0.8%-2.4%. And this invention also discloses the preparation method of the sanitary ware. Compared with the current technology, the invention has the advantages of strong strength, high tenacity, perfect self-cleaning capacity and low energy consumption.
    Type: Application
    Filed: July 16, 2010
    Publication date: April 28, 2011
    Applicants: SHANGHAI HUDA INVESTMENT & DEVELOPMENT CO., LTD, QINGHAI XIWANG HI-TECH & MATERIAL CO., LTD
    Inventor: Liqun CHI
  • Patent number: 7191062
    Abstract: The present invention is associated with a system and method of managing a compaction process. The method may include establishing a soil characteristic and establishing a machine performance characteristic in response to the soil characteristic. The machine performance characteristic may include a predictive compaction characteristic associated with a particular machine.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: March 13, 2007
    Assignee: Caterpillar Inc
    Inventors: Liqun Chi, Paul T. Corcoran, Susan B. Grandone