Patents by Inventor Long Quan
Long Quan 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: 11976676Abstract: A hydraulic-electric coupling driven multi-actuator system and control method are provided. The system comprises one or more hydraulic-electric hybrid driven actuators, first inverters, control valves, centralized hydraulic units and control units, wherein each hydraulic-electric hybrid driven actuator is correspondingly connected with one first inverter and one control valve; the centralized hydraulic units are connected with the control valves and configured to supply oil for the hydraulic-electric hybrid driven actuators and to perform power compensation; and the control units are respectively connected with the hydraulic-electric hybrid driven actuators, and each control unit is configured to control output torque of a first motor of the corresponding hydraulic-electric hybrid driven actuator based on pressure information of the hydraulic-electric hybrid driven actuator, such that pressure of driving cavities of the hydraulic-electric hybrid driven actuators is equal.Type: GrantFiled: November 11, 2022Date of Patent: May 7, 2024Assignee: Taiyuan University of TechnologyInventors: Long Quan, Shufei Qiao, Yunxiao Hao, Lei Ge, Bo Wang
-
Publication number: 20230266777Abstract: Disclosed is a flow control system for digital and mechanical redundant pressure compensation. On the basis of an original pressure compensation valve, two-position three-way electromagnetic valves are added to control the opening and closing of pressure compensation valves. Furthermore, pressure sensors and a controller are added, so that the system has a digital pressure compensation function. When the pressure sensor breaks down, the flow control system is switched to a mechanical compensation mode to achieve mechanical pressure compensation, the problem that system flow cannot be controlled when the sensor breaks down is solved, and the purpose of redundancy control is achieved. Moreover, the pressure compensation valve in the loop where the highest load is located can be controlled to be completely opened through the two-position three-way electromagnetic valve to reduce pressure loss of the valve port, and the pressure is not affected by load fluctuation.Type: ApplicationFiled: November 10, 2022Publication date: August 24, 2023Applicant: Taiyuan University of TechnologyInventors: Long Quan, Bin ZHAO, Jing YANG, Lei GE, He LIU, Yunxiao HAO
-
Publication number: 20230166413Abstract: A trimmer includes a blade assembly including a stationary blade and a movable blade. Each of the stationary blade and the movable blade includes blade teeth. The stationary blade includes a first transverse edge portion, a second transverse edge portion, and a middle portion. The first transverse edge portion includes a first upper surface extending from a first edge to the upper surface. The second transverse edge portion includes a second upper surface extending from a second edge to the upper surface. The first transverse edge portion and the second transverse edge portion are beveled from the middle portion to the respective edges of the stationary blade. The stationary blade is symmetric about a midline of the middle portion. In some embodiments, the trimmer includes a toothed blade guard.Type: ApplicationFiled: January 12, 2023Publication date: June 1, 2023Inventors: Timin Ahmad Musallam, Long Quan, Tung Yan Lau, Ken Wong
-
Publication number: 20230151830Abstract: The present disclosure relates to a hydraulic-electric coupling driven multi-actuator system and control method, and belongs to technical fields of hydraulic transmission and electro-mechanical transmission.Type: ApplicationFiled: December 15, 2022Publication date: May 18, 2023Applicant: Taiyuan University of TechnologyInventors: Long Quan, Shufei Qiao, Yunxiao Hao, Lei Ge, Bo Wang
-
Patent number: 11577413Abstract: A trimmer includes a blade assembly. The blade assembly includes a stationary blade and a movable blade. Each of the stationary blade and the movable blade includes blade teeth. The stationary blade includes a first transverse edge portion, a second transverse edge portion, and a middle portion. The first transverse edge portion includes a first upper surface extending from a first edge to the upper surface. The second transverse edge portion includes a second upper surface extending from a second edge to the upper surface. The first transverse edge portion and the second transverse edge portion are beveled from the middle portion to the respective edges of the stationary blade. The stationary blade is symmetric about a midline of the middle portion.Type: GrantFiled: August 30, 2021Date of Patent: February 14, 2023Assignee: SPECTRUM BRANDS, INC.Inventors: Timin Ahmad Musallam, Long Quan, Tung Yan Lau, Ken Wong
-
Patent number: 11348583Abstract: The present disclosure discloses a data processing method and apparatus for an intelligent device, and a storage medium, which relates to a field of artificial intelligence technologies. The method includes: extracting key voice information from collected user voice information; in a non-wireless fidelity (WiFi) network environment, transmitting the key voice information to a mobile terminal, so that the mobile terminal transmits the key voice information to a server, and receives a processing result fed back by the server after the server processes the key voice information; and obtaining the processing result from the mobile terminal to display the processing result.Type: GrantFiled: June 21, 2020Date of Patent: May 31, 2022Assignees: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD., SHANGHAI XIAODU TECHNOLOGY CO. LTD.Inventors: Yang Liu, Xi Xi, Long Quan
-
Patent number: 11293460Abstract: The present invention provides an engineering machinery hydraulic system with compensation differential pressure controllable, uses an electronic pressure compensating valve to solve the problem of flow mismatch under conditions of pressure over-limit and flow saturation, and realizes proportional shunt control and high-precision flow distribution of the system. The engineering machinery hydraulic system disclosed in the present invention has the advantages of low energy consumption, fast response speed, and high flow control precision.Type: GrantFiled: December 16, 2019Date of Patent: April 5, 2022Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Long Quan, Bo Wang, Lei Ge, Xiangyu Wang, Zepeng Li, He Liu
-
Publication number: 20210387365Abstract: A trimmer includes a blade assembly including a stationary blade and a movable blade. Each of the stationary blade and the movable blade includes blade teeth. The stationary blade includes a first transverse edge portion, a second transverse edge portion, and a middle portion. The first transverse edge portion includes a first upper surface extending from a first edge to the upper surface. The second transverse edge portion includes a second upper surface extending from a second edge to the upper surface. The first transverse edge portion and the second transverse edge portion are beveled from the middle portion to the respective edges of the stationary blade. The stationary blade is symmetric about a midline of the middle portion. In some embodiments, the trimmer includes a toothed blade guard.Type: ApplicationFiled: August 30, 2021Publication date: December 16, 2021Inventors: Timin Ahmad Musallam, Long Quan, Tung Yan Lau, Ken Wong
-
Patent number: 11131328Abstract: The present invention discloses a load-sensing multi-way valve with a variable differential pressure, where each valve group uses a new element: an electro-hydraulic pressure compensation valve, so as to implement continuous real-time adjustment and control of compensated differential pressure and real-time position feedback and monitoring of a compensation valve trim, and overcome a flow mismatch problem of a conventional LS system in a flow saturation working condition and problems of a fixed shunting proportion of an LUDV system and poor operation coordination of actuators. The load-sensing multi-way valve with a variable differential pressure disclosed in the present invention has advantages such as strong working condition applicability, high flow distribution accuracy, and strong technicality.Type: GrantFiled: December 23, 2019Date of Patent: September 28, 2021Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Long Quan, Bo Wang, Yunxiao Hao, He Wang, Zepeng Li, Lianpeng Xia
-
Patent number: 11104016Abstract: A trimmer includes a blade assembly including a stationary blade and a movable blade. Each of the stationary blade and the movable blade includes blade teeth. The stationary blade includes a first transverse edge portion, a second transverse edge portion, and a middle portion. The first transverse edge portion includes a first upper surface extending from a first edge to the upper surface. The second transverse edge portion includes a second upper surface extending from a second edge to the upper surface. In some embodiments, the trimmer includes a toothed blade guard.Type: GrantFiled: February 27, 2018Date of Patent: August 31, 2021Inventors: Timin Ahmad Musallam, Long Quan, Tung Yan Lau, Ken Wong
-
Publication number: 20210097994Abstract: The present disclosure discloses a data processing method and apparatus for an intelligent device, and a storage medium, which relates to a field of artificial intelligence technologies. The method includes: extracting key voice information from collected user voice information; in a non-wireless fidelity (WiFi) network environment, transmitting the key voice information to a mobile terminal, so that the mobile terminal transmits the key voice information to a server, and receives a processing result fed back by the server after the server processes the key voice information; and obtaining the processing result from the mobile terminal to display the processing result.Type: ApplicationFiled: June 21, 2020Publication date: April 1, 2021Inventors: Yang LIU, Xi XI, Long QUAN
-
Publication number: 20200208378Abstract: The present invention provides an engineering machinery hydraulic system with compensation differential pressure controllable, uses an electronic pressure compensating valve to solve the problem of flow mismatch under conditions of pressure over-limit and flow saturation, and realizes proportional shunt control and high-precision flow distribution of the system. The engineering machinery hydraulic system disclosed in the present invention has the advantages of low energy consumption, fast response speed, and high flow control precision.Type: ApplicationFiled: December 16, 2019Publication date: July 2, 2020Inventors: Long Quan, Bo Wang, Lei Ge, Xiangyu Wang, Zepeng Li, He Liu
-
Publication number: 20200209898Abstract: The present invention discloses a load-sensing multi-way valve with a variable differential pressure, where each valve group uses a new element: an electro-hydraulic pressure compensation valve, so as to implement continuous real-time adjustment and control of compensated differential pressure and real-time position feedback and monitoring of a compensation valve trim, and overcome a flow mismatch problem of a conventional LS system in a flow saturation working condition and problems of a fixed shunting proportion of an LUDV system and poor operation coordination of actuators. The load-sensing multi-way valve with a variable differential pressure disclosed in the present invention has advantages such as strong working condition applicability, high flow distribution accuracy, and strong technicality.Type: ApplicationFiled: December 23, 2019Publication date: July 2, 2020Inventors: Long QUAN, Bo WANG, Yunxiao HAO, He WANG, Zepeng LI, Lianpeng XIA
-
Publication number: 20200061856Abstract: A trimmer includes a blade assembly including a stationary blade and a movable blade. Each of the stationary blade and the movable blade includes blade teeth. The stationary blade includes a first transverse edge portion, a second transverse edge portion, and a middle portion. The first transverse edge portion includes a first upper surface extending from a first edge to the upper surface. The second transverse edge portion includes a second upper surface extending from a second edge to the upper surface. In some embodiments, the trimmer includes a toothed blade guard.Type: ApplicationFiled: February 27, 2018Publication date: February 27, 2020Inventors: Timin Ahmad Musallam, Long Quan, Tung Yan Lau, Ken Wong
-
Patent number: 10391650Abstract: In a hair grooming appliance, a head is detachably mountable on a handle having a motor and a receptacle configured to receive at least a portion of the head therein when the head is mounted on the handle with the head in operative connection with the motor. The handle has a first attachment member positioned at least partially within the receptacle and arranged to detachably engage the head when the at least a portion of the head is inserted into the receptacle and a second attachment member positioned at least partially within the receptacle and arranged to engage the head when the at least a portion of the head is inserted into the receptacle. The second attachment member is a different type of attachment member than the first attachment member. In a particular embodiment, the hair grooming appliance is a shaver.Type: GrantFiled: November 2, 2016Date of Patent: August 27, 2019Assignee: Spectrum Brands, Inc.Inventors: Paul Allen Schmitt, Long Quan, John Y.M. Wong
-
Patent number: 10273657Abstract: A variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recover system the control drive circuit of which includes the A, B, C energy source, boom cylinder control valve group, arm cylinder control valve group, bucket control valve, swing control valve, swing motor control valve group, left travel control valve, right travel control valve, eight 2-position 2-way valve, I and II 2-position 3-way valve, I and II accumulator. The drive control circuit adopts open control independent-cavity variable-speed pump-control volume direct-drive circuit. Each of the cavities of cylinder is controlled by an energy source and the pressure and flow rate of the cavities are adjusted by the rotational speed and torque control of the generator independently. The present invention is four-quadrant running and have advantages of high efficiency, high integrity, low consumption, redundancy energy source, no need for pilot supply, low noise, integrate recovery of kinetic and potential energy.Type: GrantFiled: October 20, 2014Date of Patent: April 30, 2019Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Long Quan, Huimin Hao, Jiahai Huang, Bing Wu, Xiaohong Han
-
Patent number: 10047768Abstract: A double-loop control system with a single hydraulic motor relates to a technical field of hydraulic transmission control, including a hydraulic motor (1), a positive control loop (2), a negative control loop (3), a hydraulic pump (4), an accumulator (5), and an oil tank, wherein the hydraulic motor (1) adopts a unique thrust structure with four inlet/outlet ports; the positive control loop (2) and the negative control loop (3) independently control the hydraulic motor (1), wherein the positive control loop (2) and the negative control loop (3) drive together or only one drives; or braking kinetic energy and potential energy of loads are stored in the accumulator (5) for energy recovery. The present invention uses only one hydraulic motor for satisfying different work conditions and different load driving requirements with advantages such as simple structure, high system reliability and high energy efficiency.Type: GrantFiled: September 24, 2014Date of Patent: August 14, 2018Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Long Quan, Youshan Gao, Huimin Hao, Jiahai Huang, Jing Yang
-
Publication number: 20180023271Abstract: A variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recover system the control drive circuit of which includes the A, B, C energy source, boom cylinder control valve group, arm cylinder control valve group, bucket control valve, swing control valve, swing motor control valve group, left travel control valve, right travel control valve, eight 2-position 2-way valve, I and II 2-position 3-way valve, I and II accumulator. The drive control circuit adopts open control independent-cavity variable-speed pump-control volume direct-drive circuit. Each of the cavities of cylinder is controlled by an energy source and the pressure and flow rate of the cavities are adjusted by the rotational speed and torque control of the generator independently. The present invention is four-quadrant running and have advantages of high efficiency, high integrity, low consumption, redundancy energy source, no need for pilot supply, low noise, integrate recovery of kinetic and potential energy.Type: ApplicationFiled: October 20, 2014Publication date: January 25, 2018Inventors: Long Quan, Huimin Hao, Jiahai Huang, Bing Wu, Xiaohong Han
-
Publication number: 20160305455Abstract: A double-loop control system with a single hydraulic motor relates to a technical field of hydraulic transmission control, including a hydraulic motor (1), a positive control loop (2), a negative control loop (3), a hydraulic pump (4), an accumulator (5), and an oil tank, wherein the hydraulic motor (1) adopts a unique thrust structure with four inlet/outlet ports; the positive control loop (2) and the negative control loop (3) independently control the hydraulic motor (1), wherein the positive control loop (2) and the negative control loop (3) drive together or only one drives; or braking kinetic energy and potential energy of loads are stored in the accumulator (5) for energy recovery. The present invention uses only one hydraulic motor for satisfying different work conditions and different load driving requirements with advantages such as simple structure, high system reliability and high energy efficiency.Type: ApplicationFiled: September 24, 2014Publication date: October 20, 2016Inventors: Long Quan, Youshan Gao, Huimin Hao, Jiahai Huang, Jing Yang
-
Patent number: 9129432Abstract: Systems and methods are provided to facilitate architectural modeling. In one aspect, a modeling system is provided. This includes a processor configured to generate remodeled images associated with one or more architectural structures. A procedural model is configured to integrate an approximate model from aerial images of the architectural structures and a three-dimensional (3D) reconstruction model from ground-level images of the architectural structures.Type: GrantFiled: January 20, 2011Date of Patent: September 8, 2015Assignee: The Hong Kong University of Science and TechnologyInventors: Long Quan, Peng Zhao, Tian Fang, Honghui Zhang