Patents by Inventor Yongfeng Wang
Yongfeng Wang 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).
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Patent number: 11458614Abstract: A 2 DOFs decoupling parallel mechanism provided by the present disclosure comprises a fixed platform, a rotation assembly, a moving platform, an arc kinematic chain, and an arc rod. In the 2 DOFs decoupling parallel mechanism, the rotation assembly can drive the moving platform to rotate by 360 degrees around a direction being perpendicular to the fixed platform, the arc rod reciprocates along the tangential direction of the arc kinematic chain to enable the moving platform to rotate around an axis of a plane where the arc kinematic chain is located. In this way, the rotations of the moving platform in two directions are respectively driven by driving units in two directions and being independent from each other, such that the two rotation actions of the mechanism have decoupling capability.Type: GrantFiled: June 9, 2017Date of Patent: October 4, 2022Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGYInventors: Guoru Zhao, Yongfeng Wang
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Patent number: 11331791Abstract: A 3 DOFs decoupling spherical parallel mechanism provided by the present disclosure comprises: a fixed platform, a rotation assembly, a moving platform, a first arc kinematic chain, a second arc kinematic chain, a first arc rod, and a second arc rod. In the 3 DOFs decoupling spherical parallel mechanism, the rotation assembly can drive the moving platform to rotate by 360 degrees around a direction being perpendicular to the fixed platform, and the first arc rod and the second arc rod reciprocate along tangential directions of the first arc kinematic chain and of the second arc kinematic chain respectively to enable the moving platform to rotate around an axis of a plane where the first arc kinematic chain or the second arc kinematic chain is located. In this way, the rotations of the moving platform in three directions are respectively driven by driving units in three directions and being independent from each other, such that the three rotation actions of the mechanism have decoupling capability.Type: GrantFiled: June 9, 2017Date of Patent: May 17, 2022Assignee: SHENZHEN INSTITUTE OF ADVANCED TECHNOLOGYInventors: Guoru Zhao, Yongfeng Wang
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Patent number: 11203112Abstract: A three-degree-of-freedom parallel mechanism, includes a fixed platform, a movable platform, and three kinematic chains, where at least one of the three kinematic chains is a flexible chain; and the flexible chain includes a first connecting rod, a second connecting rod, and an axis-variable revolute pair, the axis-variable revolute pair includes a fixed member, a movable member, and a spherical pair, one end of the fixed member is fastened on the fixed platform, the other end of the fixed member fits and abuts against an inclined surface of the movable member, the spherical pair is accommodated in the fixed member, a spherical hinge connecting rod of the spherical pair penetrates the movable member, the first connecting rod is rotatably connected to the spherical hinge connecting rod and the second connecting rod, and the second connecting rod is spherically hinged to the movable platform.Type: GrantFiled: April 30, 2020Date of Patent: December 21, 2021Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGYInventors: Guoru Zhao, Yongfeng Wang
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Patent number: 11053387Abstract: A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of here R1 and R2 are separately selected from the linear alkylene with 1-3 carbon atoms, R3 from the alkyl with 1-5 carbon atoms, and R4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.Type: GrantFiled: July 27, 2018Date of Patent: July 6, 2021Assignee: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.Inventors: Hongwei Fan, Guanfan Jin, Ming Chen, Huailin Ren, Yongfeng Wang, Xiangming Wang
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Patent number: 10994410Abstract: A three-degree-of-freedom parallel mechanism with curved sliding pairs includes a fixed platform, a moving platform, and three curved branches disposed between the fixed platform and the moving platform. Each of the curved branches includes a first curved link and a second curved link that share a common arc center. One end of the first curved link is connected to fixed platform by a rotational pair. One end of the second curved link is disposed in a cavity at another end of the first curved link. The second curved link is operative to perform a reciprocating motion along a tangent of an arc of the first curved link. Another end of the second curved link is connected to the moving platform by a ball joint. The axes of the three rotational pairs of the three curved branches coincide with each other and are perpendicular to the fixed platform.Type: GrantFiled: April 25, 2017Date of Patent: May 4, 2021Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCESInventors: Guoru Zhao, Yongfeng Wang
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Publication number: 20210055035Abstract: An air-cooled refrigerator and a control method, a control system and controller for defrosting thereof are provided. The high-temperature air of the air-cooled refrigerator exchanges heat with the evaporator in the air duct and is sent into a refrigerating compartment through the operation of a fan; when the evaporator is gradually frosted, the heat-exchanged air suffers the resistance from the frosts on the evaporator during the flow and the fan slows down. Based on this principle, the fan speed can directly correspond to the frost accumulation mass of the evaporator. The actual frost accumulation mass of the evaporator can be directly determined by determining the fan speed. When the fans peed is decreased to a certain low speed, it means that there is much frost on the evaporator and the defrosting needs to be started timely.Type: ApplicationFiled: October 30, 2018Publication date: February 25, 2021Inventors: Chunhua TENG, Yongfeng WANG, Qinghe SHENG, Xiao HAN, Wei REN
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Publication number: 20210009426Abstract: A polycrystalline element includes a table formed of polycrystalline diamond. The table includes a first surface; a second surface spaced apart from the first surface; and at least one side extending between the first surface and the second surface. The table also includes a plurality of extensions also formed of polycrystalline diamond, wherein at least one extension of the plurality of extensions extends away from at least one of the first surface and the at least one side. Optionally, the polycrystalline diamond of at least one extension of the plurality of extensions is contiguous with the polycrystalline diamond of the table. The polycrystalline element may be used in downhole tools for boring and well drilling, machine tools, and bearings.Type: ApplicationFiled: July 19, 2019Publication date: January 14, 2021Applicant: SF Diamond Co., Ltd.Inventors: Haijang Fang, Weifeng Du, Yongfeng Wang, Dongpeng Zhao
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Patent number: 10864626Abstract: Disclosed is a three-branched six-degree-of-freedom parallel mechanism with curved sliding pairs, which includes a base, a moving platform, and three identical kinetic branches. The kinetic branches are radially and evenly distributed and arranged between the base and the moving platform. Each kinetic branch includes a first curved link assembly, a first motor, and a support link. One end of the support link is hinged to the moving platform. One end of the first curved link assembly is hinged to the support link. The first motor is disposed on the base and is configured for driving the first curved link assembly to rotate, where an arc length of the first curved link assembly is changed as the first curved link assembly is driven to rotate.Type: GrantFiled: March 29, 2017Date of Patent: December 15, 2020Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCESInventors: Guoru Zhao, Yongfeng Wang
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Publication number: 20200352417Abstract: A laryngeal mask airway (LMA) for gastroscopy includes a laryngeal tube for gastroscopy. A drainage tube is fixedly installed on an outer surface of an upper end of the laryngeal tube for gastroscopy. A PC connector is fixedly installed at one end of the drainage tube. A ventilation hole is formed in an outer surface of an upper end of the drainage tube, and a suction hole is formed in an outer surface of a lower end of the laryngeal tube for gastroscopy. An inner cavity and an inflation tube hole are formed inside the laryngeal tube for gastroscopy. The inflation tube hole is disposed under the inner cavity and receives an inflation tube, and a single-cavity connector is fixedly installed at one end of the inflation tube. The LMA absorbs secretions from a patient's esophagus to minimize coughing during a gastroscopy, thereby reducing patient discomfort and pain.Type: ApplicationFiled: May 8, 2020Publication date: November 12, 2020Inventors: Penghong Xu, Yongfeng Wang, Hongtao Wanyan
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Publication number: 20200316770Abstract: The present invention provides a three-degree-of-freedom parallel mechanism, including a fixed platform, a movable platform, and three kinematic chains, where at least one of the three kinematic chains is a flexible chain; and the flexible chain includes a first connecting rod, a second connecting rod, and an axis-variable revolute pair, the axis-variable revolute pair includes a fixed member, a movable member, and a spherical pair, one end of the fixed member is fastened on the fixed platform, the other end of the fixed member fits and abuts against an inclined surface of the movable member, the spherical pair is accommodated in the fixed member, a spherical hinge connecting rod of the spherical pair penetrates the movable member, the first connecting rod is rotatably connected to the spherical hinge connecting rod and the second connecting rod, and the second connecting rod is spherically hinged to the movable platform.Type: ApplicationFiled: April 30, 2020Publication date: October 8, 2020Inventors: GUORU ZHAO, YONGFENG WANG
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Patent number: 10710249Abstract: The present disclosure relates to a robot, and provides a 3 degree-of-freedom parallel mechanism with 3 branched-chains, which includes a fixed platform, a movable platform, and three arc-shaped connecting rods. The rotation axes of three arc-shaped connecting rods are intersected with each other and each rotation axes is parallel to the fixed platform. Each arc-shaped connecting rod has a sliding slot curved extending along a longitudinal direction. The three connecting shafts one-to-one corresponds to the three arc-shaped connecting rods and are disposed on the movable platform. A first end of each connecting shaft is fixedly connected with the movable platform. A second end is hinged joint with a connecting head. The connecting head is slid and disposed in the corresponding sliding slot.Type: GrantFiled: November 14, 2016Date of Patent: July 14, 2020Assignee: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCESInventors: Yongfeng Wang, Guoru Zhao, Jing Yang, Xiaojun Zhang
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Publication number: 20200190319Abstract: A one-step spun composite DTY and preparation method thereof are provided. The bi-profiled fiber is manufactured with two types of modified polyester of different viscosities through the steps of melting, melt metering, composite extruding, cooling, oiling, drawing, heat setting and winding. Wherein those two modified polyesters have a molecular structure including terephthalic acid segments, ethylene glycol segments and branched diol segments, and the branched diol has a structural formula of here R1 and R2 are separately selected from the linear alkylene with 1-3 carbon atoms, R3 from the alkyl with 1-5 carbon atoms, and R4 from the alkyl with 2-5 carbon atoms. The obtained one-step spun composite DTY has an elastic shrinkage rate of no less than 35%. The method presented in this invention is involved in a simple and reasonable technological process for wide application range.Type: ApplicationFiled: July 27, 2018Publication date: June 18, 2020Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.Inventors: Hongwei FAN, Guanfan JIN, Ming CHEN, Huailin REN, Yongfeng WANG, Xiangming WANG
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Publication number: 20200189093Abstract: Disclosed is a three-branched six-degree-of-freedom parallel mechanism with curved sliding pairs, which includes a base, a moving platform, and three identical kinetic branches. The kinetic branches are radially and evenly distributed and arranged between the base and the moving platform. Each kinetic branch includes a first curved link assembly, a first motor, and a support link. One end of the support link is hinged to the moving platform. One end of the first curved link assembly is hinged to the support link. The first motor is disposed on the base and is configured for driving the first curved link assembly to rotate, where an arc length of the first curved link assembly is changed as the first curved link assembly is driven to rotate.Type: ApplicationFiled: March 29, 2017Publication date: June 18, 2020Inventors: GUORU ZHAO, YONGFENG WANG
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Publication number: 20200147786Abstract: A 2 DOFs decoupling parallel mechanism provided by the present disclosure comprises a fixed platform, a rotation assembly, a moving platform, an arc kinematic chain, and an arc rod. In the 2 DOFs decoupling parallel mechanism, the rotation assembly can drive the moving platform to rotate by 360 degrees around a direction being perpendicular to the fixed platform, the arc rod reciprocates along the tangential direction of the arc kinematic chain to enable the moving platform to rotate around an axis of a plane where the arc kinematic chain is located. In this way, the rotations of the moving platform in two directions are respectively driven by driving units in two directions and being independent from each other, such that the two rotation actions of the mechanism have decoupling capability.Type: ApplicationFiled: June 9, 2017Publication date: May 14, 2020Inventors: GUORU ZHAO, YONGFENG WANG
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Publication number: 20190389054Abstract: A 3 DOFs decoupling spherical parallel mechanism provided by the present disclosure comprises: a fixed platform, a rotation assembly, a moving platform, a first arc kinematic chain, a second arc kinematic chain, a first arc rod, and a second arc rod. In the 3 DOFs decoupling spherical parallel mechanism, the rotation assembly can drive the moving platform to rotate by 360 degrees around a direction being perpendicular to the fixed platform, and the first arc rod and the second arc rod reciprocate along tangential directions of the first arc kinematic chain and of the second arc kinematic chain respectively to enable the moving platform to rotate around an axis of a plane where the first arc kinematic chain or the second arc kinematic chain is located. In this way, the rotations of the moving platform in three directions are respectively driven by driving units in three directions and being independent from each other, such that the three rotation actions of the mechanism have decoupling capability.Type: ApplicationFiled: June 9, 2017Publication date: December 26, 2019Applicant: Shenzhen Institute of Advanced TechnologyInventors: Guoru ZHAO, Yongfeng WANG
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Publication number: 20190389050Abstract: A three-degree-of-freedom parallel mechanism with curved sliding pairs includes a fixed platform, a moving platform, and three curved branches disposed between the fixed platform and the moving platform. Each of the curved branches includes a first curved link and a second curved link that share a common arc center. One end of the first curved link is connected to fixed platform by a rotational pair. One end of the second curved link is disposed in a cavity at another end of the first curved link. The second curved link is operative to perform a reciprocating motion along a tangent of an arc of the first curved link. Another end of the second curved link is connected to the moving platform by a ball joint. The axes of the three rotational pairs of the three curved branches coincide with each other and are perpendicular to the fixed platform.Type: ApplicationFiled: April 25, 2017Publication date: December 26, 2019Applicant: Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesInventors: Guoru ZHAO, Yongfeng WANG
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Publication number: 20190375117Abstract: The present disclosure relates to a robot, and provides a 3 degree-of-freedom parallel mechanism with 3 branched-chains, which includes a fixed platform, a movable platform, and three arc-shaped connecting rods. The rotation axes of three arc-shaped connecting rods are intersected with each other and each rotation axes is parallel to the fixed platform. Each arc-shaped connecting rod has a sliding slot curved extending along a longitudinal direction. The three connecting shafts one-to-one corresponds to the three arc-shaped connecting rods and are disposed on the movable platform. A first end of each connecting shaft is fixedly connected with the movable platform. A second end is hinged joint with a connecting head. The connecting head is slid and disposed in the corresponding sliding slot.Type: ApplicationFiled: November 14, 2016Publication date: December 12, 2019Inventors: Yongfeng Wang, Guoru Zhao, Jing Yang, Xiaojun Zhang
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Patent number: 10368866Abstract: The disclosure relates to a surgical instrument and discloses a flexible drive member, an end-effector, and a surgical instrument. The flexible drive member includes a distal portion, a proximal portion, and a bendable portion therebetween, wherein the bendable portion includes a plurality of wire bundles extending in the length direction of the flexible drive member, and a flexible casing enclosing the plurality of wire bundles. In the technical solutions of the disclosure, the bendable portion is provided with some rigidity and flexibility due to the plurality of wire bundles, and the flexibly casing can fix the plurality of wire bundles relatively and can alleviate friction rate of the surface of the flexible drive member and further improve the rigidity of the flexible drive member.Type: GrantFiled: June 23, 2016Date of Patent: August 6, 2019Assignee: Reach Surgical, Inc.Inventors: Yongfeng Wang, Gan Zhang
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Patent number: D982046Type: GrantFiled: June 15, 2021Date of Patent: March 28, 2023Assignee: SF DIAMOND CO., LTD.Inventors: Haijiang Fang, Yongfeng Wang, Weifeng Du
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Patent number: D982631Type: GrantFiled: June 15, 2021Date of Patent: April 4, 2023Assignee: SF DIAMOND CO., LTD.Inventors: Haijiang Fang, Yongfeng Wang, Weifeng Du