Patents by Inventor Qun Yuan
Qun Yuan 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: 12190495Abstract: The present disclosure discloses a microscopic non-destructive measurement method of a microstructure linewidth based on a translation difference, based on a conventional microscopic imaging method, a high-precision displacement platform is used to move a to-be-measured sample, one microscopic image of the sample is acquired before and after the displacement separately, subtraction is performed on the two image to obtain a differential image, a light intensity distribution function of the differential image is derived, data fitting is performed on the differential image, and a high-precision sample linewidth measurement result is obtained by using the characteristic of a high differential pulse positioning resolution.Type: GrantFiled: September 22, 2023Date of Patent: January 7, 2025Assignee: NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Zhishan Gao, Jianqiu Ma, Qun Yuan, Yifeng Sun, Xiao Huo, Shumin Wang, Jiale Zhang, Xiaoxin Fan
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Publication number: 20240265520Abstract: The present disclosure discloses a microscopic non-destructive measurement method of a microstructure linewidth based on a translation difference, based on a conventional microscopic imaging method, a high-precision displacement platform is used to move a to-be-measured sample, one microscopic image of the sample is acquired before and after the displacement separately, subtraction is performed on the two image to obtain a differential image, a light intensity distribution function of the differential image is derived, data fitting is performed on the differential image, and a high-precision sample linewidth measurement result is obtained by using the characteristic of a high differential pulse positioning resolution.Type: ApplicationFiled: September 22, 2023Publication date: August 8, 2024Inventors: Zhishan GAO, Jianqiu MA, Qun YUAN, Yifeng SUN, Xiao HUO, Shumin WANG, Jiale ZHANG, Xiaoxin FAN
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Patent number: 9556009Abstract: A labor-saving device for detection of no-load hand hoist motion, including a base, a stand pole, and a controller, a first cantilever beam, a second cantilever beam, a third cantilever beam, and a fourth cantilever beam being sequentially disposed in single vertical plane from top to bottom of the stand pole. Specifically, the electric hoist being disposed below the first cantilever beam; a pair of first guide unit being respectively disposed at two opposite laterals of the second cantilever beam; a driving unit including a motor, a stand plate, and an actuator being coaxially disposed in series from internal to external, being disposed above the third cantilever beam; and a pair of second guide unit are respectively disposed at two opposite laterals of the fourth cantilever beam.Type: GrantFiled: May 3, 2012Date of Patent: January 31, 2017Assignee: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTEInventors: Rui Li, Liang Wang, Minbo Yu, Zhihua Zhu, Zhouxuan Li, Hongyun Yu, Qun Yuan
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Patent number: 9309912Abstract: A wirelessly-controlled automatic releaser including a housing, rechargeable batteries, wireless controls, an electromagnetic mechanism, and a release mechanism. The housing is provided with a cylindrical configuration having a upper cavity and a coaxial lower cavity. The wireless controller includes a remote control, a control switch, antennas, and a wireless control module. The electromagnetic mechanism includes an electromagnet and an iron core. The release mechanism includes a release pin, a movable sleeve and a release sleeve sequentially suited to one another from inside to outside.Type: GrantFiled: May 3, 2012Date of Patent: April 12, 2016Assignee: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTEInventors: Minbo Yu, Zhihua Zhu, Zhouxuan Li, Rui Li, Hongyun Yu, Qun Yuan
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Patent number: 9255868Abstract: It is provided a dedicated winding tester for composite wire rod-type specimens for effectively measuring the minimum winding radius of the wire rod-type specimens being made with carbon fiber or glass fiber reinforced composites in various diameters or textures via automatically gripping specimens, tightly winding, and sequentially proceeding sustained load in time, thereby supplying test data and design consideration in actual use and transport of the wire rod-type specimens being made of carbon fiber or glass fiber reinforced composites that comprises a shield, a specimen receiver and a winding device being arranged within said shield, as well as a programmable controller being arranged outside the shield.Type: GrantFiled: May 3, 2012Date of Patent: February 9, 2016Assignee: Zhejiang Huadian Equipment Testing InstituteInventors: Rui Li, Miao Qian, Minbo Yu, Guoyong Li, Zhihua Zhu, Hongyun Yu, Qun Yuan
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Publication number: 20130294828Abstract: The disclosed is that an automatic releaser with wireless controls, comprising a housing, rechargeable batteries, wireless controls, an electromagnetic mechanism, and a release mechanism, which being characterized in that the housing is provided with a cylindrical configuration having a upper cavity and a coaxially lower cavity therewith; the wireless controls includes a remote control, a control switch, antennas, and a wireless control module. The electromagnetic mechanism includes an electromagnet and an iron core. The release mechanism includes a release pin, a movable sleeve and a release sleeve sequentially suited to one another from inside to outside.Type: ApplicationFiled: May 3, 2012Publication date: November 7, 2013Applicant: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTEInventors: Minbo Yu, Zhihua Zhu, Zhouxuan Li, Rui Li, Hongyun Yu, Qun Yuan
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Publication number: 20130291648Abstract: It is provided a dedicated winding tester for composite wire rod-type specimens for effectively measuring the minimum winding radius of the wire rod-type specimens being made with carbon fiber or glass fiber reinforced composites in various diameters or textures via automatically gripping specimens, tightly winding, and sequentially proceeding sustained load in time, thereby supplying test data and design consideration in actual use and transport of the wire rod-type specimens being made of carbon fiber or glass fiber reinforced composites that comprises a shield, a specimen receiver and a winding device being arranged within said shield, as well as a programmable controller being arranged outside the shield.Type: ApplicationFiled: May 3, 2012Publication date: November 7, 2013Applicant: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTEInventors: Rui Li, Miao Qian, Minbo Yu, Guoyong Li, Zhihua Zhu, Hongyun Yu, Qun Yuan
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Publication number: 20130284993Abstract: It is disclosed that a labor-saving device for detection of no-load hand hoist motion, comprising a base, a stand pole, and a controller, a first cantilever beam, a second cantilever beam, a third cantilever beam, and a fourth cantilever beam being sequentially disposed in single vertical plane from top to bottom of the stand pole, which is characterized in that a electric hoist being disposed below the first cantilever beam; a pair of first guide unit being respectively disposed at two opposite laterals of the second cantilever beam; a driving unit including a motor, a stand plate, and an actuator being coaxially disposed in series from internal to external, being disposed above the third cantilever beam; and a pair of second guide unit are respectively disposed at two opposite laterals of the fourth cantilever beam.Type: ApplicationFiled: May 3, 2012Publication date: October 31, 2013Applicant: ZHEJIANG HUADIAN EQUIPMENT TESTING INSTITUTEInventors: Rui Li, Liang Wang, Minbo Yu, Zhihua Zhu, Zhouxuan Li, Hongyun Yu, Qun Yuan
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Patent number: 6343806Abstract: A bicycle head set assembly includes a threaded steerer tube extending through a head tube and a collar is mounted to the steerer tube 61 and securely mounted to a top of the head tube. Two lugs extend radially outward from the collar and a ring is mounted to the steerer tube. The ring has a skirt with two protrusions extending therefrom and a bearing is retained between the skirt and the collar. A locking nut is threadedly connected to the steerer tube and compresses the ring to position the bearing. A handlebar is connected to the steerer tube. The range of rotation of the handlebar is limited when the protrusions are rotated to contact the lugs.Type: GrantFiled: March 29, 2001Date of Patent: February 5, 2002Inventor: Qun-Yuan Lee