Patents by Inventor Keh-Chyuan Tsai
Keh-Chyuan Tsai 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: 20240125138Abstract: A steel panel damper is provided for reinforcing a building structure. The steel panel damper is disposed between a first member and an opposite second member arranged in the building structure. The steel panel damper comprises a first elastic segment, a second elastic segment, an energy dissipation segment, a first end plate, and a second end plate. In terms of the cross-sectional area perpendicular to the first direction, the first elastic segment and the second elastic segment are greater than the energy dissipation segment.Type: ApplicationFiled: March 13, 2023Publication date: April 18, 2024Inventors: Keh-Chyuan TSAI, Wei-Dar CHEN, An-Chien WU
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Patent number: 8424252Abstract: A buckling restrained brace includes an axial member and a restraining unit. The axial member extends along an axial direction, and has two coupling sections for connecting respectively to two connecting plates of a framework of a building, and a middle section connected between the coupling sections. Each coupling section has a supplying plate portion coplanar with an elongated plate body of the middle section, and a contacting plate portion extending perpendicularly from the supporting plate portion. An outer end of the supplying plate portion of each coupling section has a groove formed therethrough along a transverse direction of the axial member, extending along the axial direction, and permitting a respective one of the connecting plates to engage fittingly therewith and contact the corresponding contacting plate portion.Type: GrantFiled: March 5, 2009Date of Patent: April 23, 2013Assignee: National Applied Research LaboratoriesInventors: Keh-Chyuan Tsai, Chih-Yu Wei
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Publication number: 20120233955Abstract: A buckling restrained brace includes an axial member, a plurality of restraining members, and a plurality of securing units. The axial member includes a middle section extending in an axial direction, and a pair of coupling sections extending respectively from opposite ends of the middle section and that are adapted to be coupled fixedly to two connecting plates of a framework of a building, respectively. The restraining members extend in the axial direction, and are disposed around and contact the axial member. Each securing unit secures an adjacent pair of the restraining members together. Each restraining member cooperates with an adjacent one of the restraining members to define an opening therebetween through which a portion of the axial member is exposed for viewing.Type: ApplicationFiled: May 12, 2011Publication date: September 20, 2012Applicant: NATIONAL APPLIED RESEARCH LABORATORIESInventors: Keh-Chyuan TSAI, An-Chien WU, Chih-Yu WEI, Pao-Chun LIN
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Publication number: 20110232221Abstract: A buckling restrained brace is for connection between two connecting plates of a framework, and includes a restraining unit and an axial member. The axial member includes a middle section surrounded by the restraining unit, two first coupling sections, and two second coupling sections. The first coupling sections are connected respectively and perpendicularly to opposite longitudinal end portions of the middle section. Each first coupling section has a portion exposed from a respective one of longitudinal ends of the restraining unit, and is formed with a first coupling groove for engaging a respective one of the connecting plates. The second coupling sections are connected respectively and perpendicularly to the opposite longitudinal ends of the middle section. Each second coupling section has a portion exposed from a respective one of the longitudinal end portions of the restraining unit, and is formed with a second coupling groove for engaging a respective one of the connecting plates.Type: ApplicationFiled: June 17, 2010Publication date: September 29, 2011Applicant: NATIONAL APPLIED RESEARCH LABORATORIESInventors: Keh-Chyuan TSAI, Pao-Chun LIN, Chih-Yu WEI, An-Chien WU
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Publication number: 20100005737Abstract: A buckling restrained brace includes an axial member and a restraining unit. The axial member extends along an axial direction, and has two coupling sections for connecting respectively to two connecting plates of a framework of a building, and a middle section connected between the coupling sections. Each coupling section has a supplying plate portion coplanar with an elongated plate body of the middle section, and a contacting plate portion extending perpendicularly from the supporting plate portion. An outer end of the supplying plate portion of each coupling section has a groove formed therethrough along a transverse direction of the axial member, extending along the axial direction, and permitting a respective one of the connecting plates to engage fittingly therewith and contact the corresponding contacting plate portion.Type: ApplicationFiled: March 5, 2009Publication date: January 14, 2010Applicant: NATIONAL APPLIED RESEARCH LABORATORIESInventors: Keh-Chyuan TSAI, Chih-Yu WEI
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Patent number: 7373758Abstract: A seismic brace includes an elongated central brace unit and a rigid restraining member. The central brace unit has two ends adapted to be connected fixedly to a framework of a building, and a middle portion interconnecting the ends and having a cross-sectional area that is smaller than those of the ends. The restraining member is disposed around the middle portion of the central brace unit in a tight fit manner so as to prevent buckling of the central brace unit when the building is subjected to an earthquake, and includes two halves that are interconnected removably.Type: GrantFiled: March 13, 2007Date of Patent: May 20, 2008Assignee: National Applied Research LaboratoriesInventors: Keh-Chyuan Tsai, Sheng-Lin Lin
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Publication number: 20070240368Abstract: A seismic brace includes an elongated central brace unit and a rigid restraining member. The central brace unit has two ends adapted to be connected fixedly to a framework of a building, and a middle portion interconnecting the ends and having a cross-sectional area that is smaller than those of the ends. The restraining member is disposed around the middle portion of the central brace unit in a tight fit manner so as to prevent buckling of the central brace unit when the building is subjected to an earthquake, and includes two halves that are interconnected removably.Type: ApplicationFiled: March 13, 2007Publication date: October 18, 2007Inventors: Keh-Chyuan Tsai, Sheng-Lin Lin
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Publication number: 20040190981Abstract: A seismic brace includes an elongated central brace unit and a rigid restraining member. The central brace unit has two ends adapted to be connected fixedly to a framework of a building, and a middle portion interconnecting the ends and having a cross-sectional area that is smaller than those of the ends. The restraining member is disposed around the middle portion of the central brace unit in a tight fit manner so as to prevent buckling of the central brace unit when the building is subjected to an earthquake, and includes two halves that are interconnected removably.Type: ApplicationFiled: December 17, 2003Publication date: September 30, 2004Inventors: Keh-Chyuan Tsai, Sheng-Lin Lin
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Patent number: 5630298Abstract: A shear link energy absorber comprises a base plate, an I-shaped beam, a fixture, at least one connecting plate and a plurality of bolts. The I-shaped beam has a pair of flange plates and a web plate positioned between the flange plates. The fixture has a bottom plate and two side plates parallel connected to the bottom plate. The base plate is connected to one end of the I-shaped beam while the connecting plate connected to the other end of the I-shaped beam. The plurality of bolts bolt the connecting plate and the fixture together.Type: GrantFiled: September 5, 1995Date of Patent: May 20, 1997Assignee: National Science CouncilInventors: Keh-Chyuan Tsai, Ray-Jeng Wang
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Patent number: 5533307Abstract: Two energy dissipation devices, each comprising a first plate, a plurality of spaced tapered plates, a plurality of cylinders, a plurality of washers, and a base frame. The devices can absorb seismic energy through the yielding of the tapered plates and effectively reduce a building vibration response during an earthquake. The devices are particularly suitable for use in building structures that must be designed to dissipate a large amount of seismic energy to achieve economical earthquake-resistant construction.Type: GrantFiled: November 29, 1994Date of Patent: July 9, 1996Assignee: National Science CouncilInventors: Keh-Chyuan Tsai, Jeng-Wei Li