Patents by Inventor Chang-Shen Chang
Chang-Shen Chang 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: 9162893Abstract: A method for making a carbon nanotube composite preform includes following steps. A substrate is provided. Carbon nanotubes are formed on the substrate. The carbon nanotubes and the substrate are placed in a solvent for a predetermined time. The carbon nanotubes and the substrate are drawn from the solvent. The carbon nanotubes and the substrate are dried.Type: GrantFiled: August 5, 2013Date of Patent: October 20, 2015Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Hai-Zhou Guo, Feng-Wei Dai, Yuan Yao, Chang-Shen Chang, Chang-Hong Liu, Kai-Li Jiang
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Patent number: 9155222Abstract: An electronic device includes a first housing with a first air inlet and outlet, a heat dissipation assembly, and a filter structure between the first housing and the heat dissipation assembly. The heat dissipation assembly defines a second air inlet and outlet. The first air inlet, the second air inlet, the second air outlet and the first air outlet communicate with each other. The heat dissipation assembly draws air across itself from the two air inlets, and expels the air from the two air outlets. The filter structure covers the second air inlet and defines a plurality of very small holes which function to filter dust out from the incoming air.Type: GrantFiled: August 7, 2013Date of Patent: October 6, 2015Assignee: ShenZhen Treasure City Technology Co., LTD.Inventors: Zhen-Yu Wang, Chang-Shen Chang, Ben-Fan Xia
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Patent number: 8811010Abstract: An exemplary electronic device includes a container, a fan assembly and a duct received in the container. The fan assembly includes a centrifugal fan and a fin group thermally contacting an electronic component in the container. An air passage is defined between each adjacent fins of the fin group. An inner side of the fin group is mounted on an outlet of the centrifugal fan. A bottom surface of the fin group and an inner surface of the container cooperatively define a first channel therebetween. The duct includes an inlet and a first outlet. Airflow guided by the centrifugal fan flows through the duct and the first channel to cool a bottom end of the fin group, then is absorbed into the centrifugal fan from an inlet of the centrifugal fan, and then flow through the air passages of the fin group to cool a central portion the fin group.Type: GrantFiled: June 7, 2012Date of Patent: August 19, 2014Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Zhen-Yu Wang, Chang-Shen Chang, Ben-Fan Xia
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Publication number: 20140202676Abstract: A fixing assembly includes a main body, a fixing member, and a limiting member secured to the main body. The limiting member angles with the main body to form a limited but resiliently deformable space for mounting of the fixing member, but then restores to hold the fixing member captive and avoid the displacement or loss of the fixing member at any time. A heat sink using the fixing assembly is also provided.Type: ApplicationFiled: August 14, 2013Publication date: July 24, 2014Applicants: Hon Hai Precision Industry Co., Ltd., Hong Fu Jin Precision Industry (ShenZhen) Co., LtdInventors: ZHEN-YU WANG, CHANG-SHEN CHANG
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Publication number: 20140182818Abstract: A heat sink for dissipating heat generated by an electronic element is provided. The heat sink includes a heat pipe and a conducting member for transferring heat generated by the electronic element to the heat pipe. The conducting member abuts the electronic element, and the conducting member is applied onto the heat pipe to reduce a thickness of the heat sink.Type: ApplicationFiled: August 7, 2013Publication date: July 3, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: ZHEN-YU WANG, CHANG-SHEN CHANG, BEN-FAN XIA
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Publication number: 20140071641Abstract: A power supply device includes a laptop battery and a voltage converter secured to the laptop battery. The laptop battery includes a first connecting portion and a first interface for outputting a first voltage. The voltage converter includes a housing, a second connecting portion formed in the housing and a circuit board secured to the housing. The circuit board includes a second interface, a first converting unit and a third interface. The first connecting portion is detachably coupled to the second portion to secure the voltage converter to the laptop battery. The second interface is electronically connected to the first interface so as to receive the first voltage when the first connecting portion is coupled to the second connecting portion. The first converting unit converts the first voltage to the second voltage and outputs the second voltage through the third interface.Type: ApplicationFiled: September 3, 2013Publication date: March 13, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) Co., LTD.Inventors: ZHEN-YU WANG, CHANG-SHEN CHANG, BEN-FAN XIA
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Publication number: 20140049915Abstract: An electronic device includes a first housing with a first air inlet and outlet, a heat dissipation assembly, and a filter structure between the first housing and the heat dissipation assembly. The heat dissipation assembly defines a second air inlet and outlet. The first air inlet, the second air inlet, the second air outlet and the first air outlet communicate with each other. The heat dissipation assembly draws air across itself from the two air inlets, and expels the air from the two air outlets. The filter structure covers the second air inlet and defines a plurality of very small holes which function to filter dust out from the incoming air.Type: ApplicationFiled: August 7, 2013Publication date: February 20, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: ZHEN-YU WANG, CHANG-SHEN CHANG, BEN-FAN XIA
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Publication number: 20130316093Abstract: A method for making a carbon nanotube composite preform includes following steps. A substrate is provided. Carbon nanotubes are formed on the substrate. The carbon nanotubes and the substrate are placed in a solvent for a predetermined time. The carbon nanotubes and the substrate are drawn from the solvent. The carbon nanotubes and the substrate are dried.Type: ApplicationFiled: August 5, 2013Publication date: November 28, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., TSINGHUA UNIVERSITYInventors: HAI-ZHOU GUO, FENG-WEI DAI, YUAN YAO, CHANG-SHEN CHANG, CHANG-HONG LIU, KAI-LI JIANG
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Publication number: 20130286588Abstract: An exemplary electronic device includes a container, a fan assembly and a duct received in the container. The fan assembly includes a centrifugal fan and a fin group thermally contacting an electronic component in the container. An air passage is defined between each adjacent fins of the fin group. An inner side of the fin group is mounted on an outlet of the centrifugal fan. A bottom surface of the fin group and an inner surface of the container cooperatively define a first channel therebetween. The duct includes an inlet and a first outlet. Airflow guided by the centrifugal fan flows through the duct and the first channel to cool a bottom end of the fin group, then is absorbed into the centrifugal fan from an inlet of the centrifugal fan, and then flow through the air passages of the fin group to cool a central portion the fin group.Type: ApplicationFiled: June 7, 2012Publication date: October 31, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.Inventors: ZHEN-YU WANG, CHANG-SHEN CHANG, BEN-FAN XIA
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Patent number: 8553415Abstract: An electronic device includes a casing, a fan, and a heat sink. The casing defines a plurality of through holes therein. The fan defines air outlet at one side thereof facing the through holes of the casing. The air outlet includes a first portion and a second portion. Air pressure in the first portion is larger than air pressure of the second portion. The heat sink includes a first fin set arranged on the first portion and a second fin set arranged on the second portion. A first passage is defined between each two neighboring first fins. A second passage is defined between each two neighboring second fins. A width of the second passage is less than that of the first passage.Type: GrantFiled: December 23, 2011Date of Patent: October 8, 2013Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Zhen-Yu Wang, Chang-Shen Chang, Ben-Fan Xia
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Patent number: 8530052Abstract: A carbon nanotube composite preform includes a substrate and a plurality of carbon nanotubes formed thereon. Each carbon nanotube includes a first end adjacent to the substrate and a second end away from the substrate. Gaps between the second ends of the carbon nanotubes are bigger than gaps between the first ends thereof. The method for making the carbon nanotube composite preform includes the following steps: (a) providing a substrate; (b) forming a plurality of carbon nanotubes (e.g., a carbon nanotube array) on the substrate; (c) placing the carbon nanotubes and the substrate in a solvent for some time; (d) removing the carbon nanotubes and the substrate from the solvent; (e) drying the carbon nanotubes and the substrate to form a carbon nanotube composite preform.Type: GrantFiled: December 14, 2007Date of Patent: September 10, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Hai-Zhou Guo, Feng-Wei Dai, Yuan Yao, Chang-Shen Chang, Chang-Hong Liu, Kai-Li Jiang
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Patent number: 8466223Abstract: A composite material includes a body and a plurality of nano-scale probes. The body is made of a polymer. The plurality of nano-scale probes is embedded in the body. The nano-scale probes are substantially uniformly distributed in the polymer matrix. The nano-scale probes are nanowires, nano-particles or nanotubes.Type: GrantFiled: July 17, 2012Date of Patent: June 18, 2013Assignees: Tsingua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yuan Yao, Chang-Shen Chang
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Patent number: 8459341Abstract: An exemplary heat pipe includes an elongated casing, a wick, an artery mesh, and working medium filled in the casing. The casing includes an evaporating section and a condensing section. The wick is disposed within an inner wall of the evaporating section of the casing. The artery mesh includes a large portion, and a small portion with an outer diameter smaller than that of the large portion. The small portion is located within and in direct physical contact with an inner surface of the wick. The large portion is in direct physical contact with an inner wall of the condensing section of the casing. The working medium saturates the wick and the artery mesh.Type: GrantFiled: November 4, 2010Date of Patent: June 11, 2013Assignee: Foxconn Technology Co., Ltd.Inventors: Chang-Shen Chang, Juei-Khai Liu, Chao-Hao Wang, Hsien-Sheng Pei
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Publication number: 20130050941Abstract: An electronic device includes a casing, a fan, and a heat sink. The casing defines a plurality of through holes therein. The fan defines air outlet at one side thereof facing the through holes of the casing. The air outlet includes a first portion and a second portion. Air pressure in the first portion is larger than air pressure of the second portion. The heat sink includes a first fin set arranged on the first portion and a second fin set arranged on the second portion. A first passage is defined between each two neighboring first fins. A second passage is defined between each two neighboring second fins. A width of the second passage is less than that of the first passage.Type: ApplicationFiled: December 23, 2011Publication date: February 28, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen ) CO., LTD.Inventors: ZHEN-YU WANG, CHANG-SHEN CHANG, BEN-FAN XIA
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Publication number: 20120282650Abstract: A composite material includes a body and a plurality of nano-scale probes. The body is made of a polymer. The plurality of nano-scale probes is embedded in the body. The nano-scale probes are substantially uniformly distributed in the polymer matrix.Type: ApplicationFiled: July 17, 2012Publication date: November 8, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., Tsinghua UniversityInventors: Yuan YAO, Chang-Shen CHANG
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Patent number: 8247528Abstract: A composite material includes a body and a plurality of nano-scale probes. The body is made of a polymer. The plurality of nano-scale probes is embedded in the body. The nano-scale probes are substantially uniformly distributed in the polymer matrix. A method for making the composite material is further provided.Type: GrantFiled: October 13, 2009Date of Patent: August 21, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yuan Yao, Chang-Shen Chang
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Patent number: 7988893Abstract: A method for fabricating a carbon nanotube yarn includes providing a plurality of carbon nanotube arrays; pulling out, by using a tool, a first carbon nanotube structure from one of the carbon nanotube arrays; pulling out a subsequent carbon nanotube structure from another one of the carbon nanotube arrays; joining a leading end of the subsequent carbon nanotube structure to a trailing portion of the carbon nanotube structure already formed by contacting the leading end of the subsequent carbon nanotube structure with the trailing portion of the already-formed carbon nanotube structure, with the contact occurring along a common lengthwise direction of the two carbon nanotube structures, thereby forming a lengthened carbon nanotube structure; repeating the pulling and the joining until the lengthened carbon nanotube structure has a desired length; and treating the lengthened carbon nanotube structure with an organic solvent.Type: GrantFiled: September 18, 2008Date of Patent: August 2, 2011Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yun-Hsin Kevin Liao, Kai-Li Jiang, Shou-Shan Fan, Yuan Yao, Chang-Shen Chang, Hsien-Sheng Pei
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Patent number: 7947331Abstract: A method for making a thermal interface material includes the steps of: (a) providing an array of carbon nanotubes formed on a substrate, the carbon nanotubes having interfaces defined therebetween; (b) providing a transferring device and disposing at least one low melting point metallic material above the array of carbon nanotubes, using the transferring device; and (c) heating the low melting point metallic material and the array of carbon nanotube to a certain temperature to make the at least one low melting point metallic material melt, then flow into the interspaces between the carbon nanotubes, and combine (e.g., mechanically) with the array of carbon nanotubes to acquire a carbon-nanotube-based thermal interface material.Type: GrantFiled: April 28, 2008Date of Patent: May 24, 2011Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Yun-Hsin Kevin Liao, Yuan Yao, Chang-Shen Chang, Hsien-Sheng Pei, Kai-Li Jiang, Chang-Hong Liu
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Publication number: 20110048683Abstract: An exemplary heat pipe includes an elongated casing, a wick, an artery mesh, and working medium filled in the casing. The casing includes an evaporating section and a condensing section. The wick is disposed within an inner wall of the evaporating section of the casing. The artery mesh includes a large portion, and a small portion with an outer diameter smaller than that of the large portion. The small portion is located within and in direct physical contact with an inner surface of the wick. The large portion is in direct physical contact with an inner wall of the condensing section of the casing. The working medium saturates the wick and the artery mesh.Type: ApplicationFiled: November 4, 2010Publication date: March 3, 2011Applicant: FOXCONN TECHNOLOGY CO., LTD.Inventors: CHANG-SHEN CHANG, JUEI-KHAI LIU, CHAO-HAO WANG, HSIEN-SHENG PEI
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Patent number: 7845394Abstract: A heat pipe includes an elongated casing (10), a wick (13), at least one artery mesh (12), and working medium filling in the casing. The casing has an evaporating section (101) and a condensing section (102). The wick is disposed on an inner wall of the evaporating section. The at least one artery mesh includes a large portion (121) and a small portion (122) with an outer diameter smaller than that of the large portion. The small portion is located within and contacts with the wick, and the large portion contacts with the inner wall of the condensing section of the casing. The working medium saturates the wick and the at least one artery mesh.Type: GrantFiled: December 18, 2007Date of Patent: December 7, 2010Assignee: Foxconn Technology Co., Ltd.Inventors: Chang-Shen Chang, Juei-Khai Liu, Chao-Hao Wang, Hsien-Sheng Pei