Patents by Inventor Hung-Sen Tu
Hung-Sen Tu 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: 8587172Abstract: A sensor fastening method and a sensor fastening frame for use therewith are provided. The sensor fastening frame is coupled to a motor stator of a brushless motor having distributed coils and extends over the distributed coils to allow the sensor fastening frame to rotate about the axle of a motor rotor, without interference with the distributed coils. At least a sensor is fastened in position to the sensor fastening frame proximate to one end of the axle of the motor stator for positioning the sensor to detect magnetic field variations of the motor rotor.Type: GrantFiled: January 23, 2009Date of Patent: November 19, 2013Assignee: System General CorporationInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang, Chung-En Chen
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Patent number: 8508091Abstract: An end cover adapted to engage with an end surface of a spindle of a motor rotor is proposed for securely coupling to the spindle with a plurality of permanent magnets disposed around the peripheral wall of the spindle. The end cover has a first surface facing an end surface of the spindle and an second surface opposing to the first surface, which is formed with a plurality of inserting slots indentedly disposed around the rim thereof and corresponding to the permanent magnets for coupling the ends of the permanent magnets, thereby securely fastening each of the permanent magnets to the spindle of the motor rotor. Further, the present invention further provides a motor rotor having the end covers described above.Type: GrantFiled: December 30, 2008Date of Patent: August 13, 2013Assignee: System General CorporationInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang, Chung-En Chen
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Patent number: 8384262Abstract: A motor rotor includes an annular body and a plurality of magnetic bodies installed on an inner lateral surface of the annular body in an irregular manner, to prevent a rotating motor from generating a cogging effect, disperse the frequency of the cogging torque, and reduce the amplitude. Accordingly, noises generated while the motor is operating are reduced, the periodicity of a cogging torque is changed, and cogging torque is reduced.Type: GrantFiled: June 17, 2010Date of Patent: February 26, 2013Assignee: Fairchild Semiconductor IncorporatedInventors: Shih-Jen Yang, Hung-Sen Tu, Chen-Chia Yang
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Publication number: 20120043843Abstract: A motor rotor includes an annular body and a positioning protrusion installed on an inner lateral surface of the annular body. A magnetic body may be positioned by propping its lateral surface against the positioning protrusion, without the use of additional jigs. Therefore, the time needed to assemble the magnetic body to the annular body is saved, and the manufacturing cost of the whole motor is reduced.Type: ApplicationFiled: August 19, 2010Publication date: February 23, 2012Applicant: SYSTEM GENERAL CORPORATIONInventors: Yung-Sheng Wu, Hung-Sen Tu, I-Hsing Chen
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Publication number: 20110309705Abstract: A motor rotor includes an annular body and a plurality of magnetic bodies installed on an inner lateral surface of the annular body in an irregular manner, to prevent a rotating motor from generating a cogging effect, disperse the frequency of the cogging torque, and reduce the amplitude. Accordingly, noises generated while the motor is operating are reduced, the periodicity of a cogging torque is changed, and cogging torque is reduced.Type: ApplicationFiled: June 17, 2010Publication date: December 22, 2011Applicant: FAIRCHILD SEMICONDUCTOR INCORPORATEDInventors: Shih-Jen Yang, Hung-Sen Tu, Chen-Chia Yang
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Patent number: 8050057Abstract: A mounting structure for fixing an electronic element on a heat dissipation unit is provided. The mounting structure includes a heat dissipation unit, a fixing member, electronic elements and elastic elements. The fixing member is fixed on the heat dissipation unit. The elastic elements are sandwiched between the electronic elements and the fixing member, wherein the fixing member and the elastic elements press the electronic elements to make the electronic elements tightly contact the heat dissipation unit.Type: GrantFiled: July 13, 2009Date of Patent: November 1, 2011Assignee: System General CorporationInventors: Shih-Jen Yang, Hung-Sen Tu
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Patent number: 7888835Abstract: A rotating shaft disclosed by the present invention includes a plurality of bumps spacedly formed along an outer circumferential surface thereof. The bumps are each formed with two engagement portions extending outwardly and bilaterally and a deformation space therebetween. The engagement portions undergo resilient deformation toward the deformation space when subjected to a force, thus providing stable engagement with a magnetic body, protecting the magnetic body from cracks and damages during assembling, and enhancing yield. The present invention further discloses a motor rotor having the above-described rotating shaft.Type: GrantFiled: October 1, 2007Date of Patent: February 15, 2011Assignee: System General CorporationInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Cha Yang
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Publication number: 20100309645Abstract: A mounting structure for fixing an electronic element on a heat dissipation unit is provided. The mounting structure includes a heat dissipation unit, a fixing member, electronic elements and elastic elements. The fixing member is fixed on the heat dissipation unit. The elastic elements are sandwiched between the electronic elements and the fixing member, wherein the fixing member and the elastic elements press the electronic elements to make the electronic elements tightly contact the heat dissipation unit.Type: ApplicationFiled: July 13, 2009Publication date: December 9, 2010Applicant: SYSTEM GENERAL CORPORATIONInventors: Shih-Jen Yang, Hung-Sen Tu
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Patent number: 7723887Abstract: A motor rotor is provided. The motor rotor includes a plurality of magnetic members circumferentially disposed on a peripheral wall surface of a turning axle of the motor rotor, and both end surfaces of the turning axle are coupled with fastening members respectively; each of the magnetic members has a first fastening portion formed at each of its two ends; and the fastening member is provided with a plurality of second fastening portions corresponding in position to the first fastening portions, such that each of the magnetic members are firmly fixed in position to the turning axle.Type: GrantFiled: May 15, 2008Date of Patent: May 25, 2010Assignee: System General CorporationInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang
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Publication number: 20100109465Abstract: A motor structure and a fan are provided. The motor structure includes a shaft, a motor control panel, a stator, a rotor and a motor housing. The motor control panel has a first fastening portion and is engageable with the shaft. The stator has a second fastening portion coupled to the first fastening portion so as to fasten the motor control panel to the stator, thereby reducing the overall size and saving costs of materials. The rotor corresponds in position to the stator and is pivotally connected to the shaft. The motor housing is pivotally connected to the shaft and encloses the shaft, the motor control panel, the stator, and the rotor. The fan includes the motor structure and a fan blade element.Type: ApplicationFiled: February 26, 2009Publication date: May 6, 2010Applicant: SYSTEM GENERAL CORPORATIONInventors: Shih-Jen Yang, Yung-Sheng Wu, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang
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Publication number: 20090309448Abstract: An end cover adapted to engage with an end surface of a spindle of a motor rotor is proposed for securely coupling to the spindle with a plurality of permanent magnets disposed around the peripheral wall of the spindle. The end cover has a first surface facing an end surface of the spindle and an second surface opposing to the first surface, which is formed with a plurality of inserting slots indentedly disposed around the rim thereof and corresponding to the permanent magnets for coupling the ends of the permanent magnets, thereby securely fastening each of the permanent magnets to the spindle of the motor rotor. Further, the present invention further provides a motor rotor having the end covers described above.Type: ApplicationFiled: December 30, 2008Publication date: December 17, 2009Applicant: SYSTEM GENERAL CORPORATIONInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang, Chung-En Chen
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Publication number: 20090309441Abstract: A sensor fastening method and a sensor fastening frame for use therewith are provided. The sensor fastening frame is coupled to a motor stator of a brushless motor having distributed coils and extends over the distributed coils to allow the sensor fastening frame to rotate about the axle of a motor rotor, without interference with the distributed coils. At least a sensor is fastened in position to the sensor fastening frame proximate to one end of the axle of the motor stator for positioning the sensor to detect magnetic field variations of the motor rotor.Type: ApplicationFiled: January 23, 2009Publication date: December 17, 2009Applicant: SYSTEM GENERAL CORPORATIONInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang, Chung-En Chen
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Publication number: 20090195101Abstract: A motor rotor is provided. The motor rotor includes a plurality of magnetic members circumferentially disposed on a peripheral wall surface of a turning axle of the motor rotor, and both end surfaces of the turning axle are coupled with fastening members respectively; each of the magnetic members has a first fastening portion formed at each of its two ends; and the fastening member is provided with a plurality of second fastening portions corresponding in position to the first fastening portions, such that each of the magnetic members are firmly fixed in position to the turning axle.Type: ApplicationFiled: May 15, 2008Publication date: August 6, 2009Applicant: SYSTEM GENERAL CORPORATIONInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang
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Publication number: 20090015091Abstract: A rotating shaft disclosed by the present invention includes a plurality of bumps spacedly formed along an outer circumferential surface thereof. The bumps are each formed with two engagement portions extending outwardly and bilaterally and a deformation space therebetween. The engagement portions undergo resilient deformation toward the deformation space when subjected to a force, thus providing stable engagement with a magnetic body, protecting the magnetic body from cracks and damages during assembling, and enhancing yield. The present invention further discloses a motor rotor having the above-described rotating shaft.Type: ApplicationFiled: October 1, 2007Publication date: January 15, 2009Inventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Cha Yang
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Patent number: D590339Type: GrantFiled: June 25, 2008Date of Patent: April 14, 2009Assignee: System General CorporationInventors: Ta-Yung Yang, Shih-Jen Yang, Hung-Sen Tu, Ming-Wei Cheng
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Patent number: D595740Type: GrantFiled: May 15, 2008Date of Patent: July 7, 2009Assignee: System General CorporationInventors: Shih-Jen Yang, Hung-Sen Tu, I-Hsing Chen, Chen-Chia Yang