Patents by Inventor Zefeng Ma
Zefeng Ma 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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Publication number: 20240077785Abstract: The present disclosure discloses a lens driver, which applied to a photographic device. The photographic device includes a focal ring. The lens driver includes a first housing, a driving assembly, and a mounting member. The driving assembly is arranged on the first housing and is configured to adjust the focal ring. The mounting member is arranged on the first housing and is configured to install a battery. The battery is electrically connected to the driving assembly through the mounting member. In the present disclosure, the lens driver is provided with the mounting member for installing the battery, and the mounting member is capable of electrically conducting the battery and the driving assembly. When in use, it is only need to install the battery on the mounting member, which is more convenient.Type: ApplicationFiled: August 31, 2023Publication date: March 7, 2024Inventors: WEI TANG, ZEFENG MA, JINXU LAI
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Patent number: 11056782Abstract: A linked locking mechanism and antenna down-tilt angle control device is described. Linked locking mechanism includes: mounting frame with a mounting positions, each mounting position has a mounting through hole and a clamping body. Output assembly includes an output shaft and output gear resiliently disposed on output shaft. One end of output gear has engaging body engaged with clamping body and pressing body provided through mounting through hole. Rotating bracket has pressure bearing surface pressed against pressing body. Arc-shaped embossments are provided on pressure bearing surface. The arc-shaped embossment includes guide end, anti-reverse end, and mating body. When mating body and pressing body abut, and engaging body and clamping body are separated, output gear drives output shaft to rotate. Linked locking mechanism and antenna down-tilt angle control device provide easy positioning and accurate control of down-tilt angle of antenna.Type: GrantFiled: August 29, 2018Date of Patent: July 6, 2021Inventors: Chaosheng Huang, Zefeng Ma, Fengzhang Xue, Jianjun You, Hongbin Duan, Peitao Liu
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Patent number: 10910707Abstract: A transmission device and an antenna down-tilt control system includes: an input component, comprising an inner gear ring, a first gear and a second gear both coaxial with the inner gear ring, and a third gear engaged with the first gear; a unidirectional control mechanism, comprising a first unidirectional component, the first unidirectional component comprising a first rotating member that can unidirectionally rotate in a first rotation direction, the first rotating member being fixedly connected to the inner gear ring; an output component, comprising at least two fourth gears arranged at an interval in a circumferential direction, the third gear being selectively engaged with any one of the fourth gears; and a rotary component, comprising a fifth gear and a rotary box.Type: GrantFiled: December 28, 2017Date of Patent: February 2, 2021Inventors: Chaosheng Huang, Zefeng Ma, Fengzhang Xue, Jianjun You, Hongbin Duan, Peitao Liu
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Publication number: 20200303816Abstract: A linked locking mechanism and antenna down-tilt angle control device is described. Linked locking mechanism includes: mounting frame with a mounting positions, each mounting position has a mounting through hole and a clamping body. Output assembly includes an output shaft and output gear resiliently disposed on output shaft. One end of output gear has engaging body engaged with clamping body and pressing body provided through mounting through hole. Rotating bracket has pressure bearing surface pressed against pressing body. Arc-shaped embossments are provided on pressure bearing surface. The arc-shaped embossment includes guide end, anti-reverse end, and mating body. When mating body and pressing body abut, and engaging body and clamping body are separated, output gear drives output shaft to rotate. Linked locking mechanism and antenna down-tilt angle control device provide easy positioning and accurate control of down-tilt angle of antenna.Type: ApplicationFiled: August 29, 2018Publication date: September 24, 2020Applicant: Comba Telecom Technology (Guangzhou) LimitedInventors: Chaosheng Huang, Zefeng Ma, Fengzhang Xue, Jianjun You, Hongbin Duan, Peitao Liu
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Publication number: 20200287280Abstract: A transmission device and an antenna down-tilt control system includes: an input component, comprising an inner gear ring, a first gear and a second gear both coaxial with the inner gear ring, and a third gear engaged with the first gear; a unidirectional control mechanism, comprising a first unidirectional component, the first unidirectional component comprising a first rotating member that can unidirectionally rotate in a first rotation direction, the first rotating member being fixedly connected to the inner gear ring; an output component, comprising at least two fourth gears arranged at an interval in a circumferential direction, the third gear being selectively engaged with any one of the fourth gears; and a rotary component, comprising a fifth gear and a rotary box.Type: ApplicationFiled: December 28, 2017Publication date: September 10, 2020Applicants: Comba Telecom Technology (Guangzhou) Ltd., Comba Telecom Systems (China) Limited, Comba Telecom Systems (Guangzhou) Ltd., Tianjin Comba Telecom Systems Ltd.Inventors: Chaosheng Huang, Zefeng Ma, Fengzhang Xue, Jianjun You, Hongbin Duan, Peitao Liu
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Publication number: 20190029112Abstract: A printed-circuit cable for an antenna, comprising: a printed-circuit cable body (110); printed-circuit cable connecting terminals (120) provided on both ends of the printed-circuit cable body (110), the printed-circuit cable body (110) comprising: a substrate; a signal transmission layer (111) printed on the substrate; and an insulating material layer (112) printed on the substrate and located on both sides of the signal transmission layer (111). This optimizes the electromagnetic shielding effect, solves the technical problem of a built-in control drive unit of an electrically adjusted antenna causing the third-order intermodulation performance of an antenna passive body to be degraded, and achieves the technical effect of the built-in control drive unit having a minimal influence on the third-order intermodulation performance of the antenna body. Further provided are a manufacture method of a printed-circuit cable, an antenna control and drive connection cable, and an electrically adjusted antenna system.Type: ApplicationFiled: August 8, 2016Publication date: January 24, 2019Inventors: Peifeng PAN, Zefeng MA, Zhenchun RONG, Peitao LIU, Hongbin DUAN, Shequan LIU
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Patent number: 10127253Abstract: A searching method, a client and a server are provided. The searching method includes: obtaining, at a client device, a query set selected from two or more multi-level classification webpages; sending the query set from the client device to a server; and receiving, at the client device, search results according to the query set from the server.Type: GrantFiled: December 30, 2014Date of Patent: November 13, 2018Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.Inventors: Xian Tang, Jianchun Xu, Zefeng Ma, Jinxia Bao, Ruixing Zhang
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Publication number: 20150278266Abstract: A searching method, a client and a server are provided. The searching method includes: obtaining, at a client device, a query set selected from two or more multi-level classification webpages; sending the query set from the client device to a server; and receiving, at the client device, search results according to the query set from the server.Type: ApplicationFiled: December 30, 2014Publication date: October 1, 2015Inventors: Xian TANG, Jianchun XU, Zefeng MA, Jinxia BAO, Ruixing ZHANG
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Patent number: 9065381Abstract: An electrically adjustable antenna control system includes a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism. Herein, the controller includes a control board and its imbedded program. The actuation mechanism includes a DC geared motor controlled by the control board and embedded program and an electrically adjustable antenna phase shifter driven by the geared motor. The feedback loop has a travel plate electrically coupled to both of the control board and DC geared motor and a counter device installed on the geared motor. The present invention also provides an electrically adjustable antenna control method realized by the above-mentioned electrically adjustable antenna control system.Type: GrantFiled: October 28, 2011Date of Patent: June 23, 2015Assignee: Comba Telecom System (China) LtdInventors: Yingyu Liu, Zefeng Ma
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Publication number: 20140197763Abstract: An electrically adjustable antenna control system includes a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism. Herein, the controller includes a control board and its imbedded program. The actuation mechanism includes a DC geared motor controlled by the control board and embedded program and an electrically adjustable antenna phase shifter driven by the geared motor. The feedback loop has a travel plate electrically coupled to both of the control board and DC geared motor and a counter device installed on the geared motor. The present invention also provides an electrically adjustable antenna control method realized by the above-mentioned electrically adjustable antenna control system.Type: ApplicationFiled: October 28, 2011Publication date: July 17, 2014Applicant: Comba Telecom System (China) Ltd.Inventors: Yingyu Liu, Zefeng Ma
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Patent number: D998249Type: GrantFiled: March 8, 2023Date of Patent: September 5, 2023Assignee: Shenzhen Pandora Intelligent Electronics Co., Ltd.Inventor: Zefeng Ma