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| Number | Title | Issue Date |
| 7971397 | Tuned liquid damper A tuned liquid damper comprising a housing with a hollow cavity within said housing and a first fluid which partially fills said hollow cavity. The inner surface of said hollow cavity is essentially spherical. The tuned liquid damper further comprises first fluid da... | 07/05/2011 |
| 7707787 | Damping device and method for setting natural frequency of damping body in the damping device Installed on a top of a structure (1) is a base stand (11) against which damping body (3) movably rests via a linear guide mechanism (12). Mounted between the damping body (3) and the structure (1) or between the damping bod... | 05/04/2010 |
| 7290374 | Vibration control apparatus using water tank located at top floor of a tall building A vibration control apparatus using a water tank, which is installed at the uppermost floor of a tall building, the water tank being formed at the inner wall surface thereof with horizontal protrusions. In order to improve a vibration attenuation rate in a horizonta... | 11/06/2007 |
| 7281287 | Prop-type damping device There is disclosed a prop-type damping device which effectively consumes energy of up-and-down vibration on a main girder of a bridge caused by earthquakes, winds, passing vehicles or the like to prolong a life of the bridge and improve comfort for bridge users with... | 10/16/2007 |
| 7234897 | Area earthquake defense system An area earthquake defense system is disclosed which uses military planning principles; automated command and control systems; the technology of wave manipulation demonstrated in optical engineering, sonar, and anti-tank weapons and their countermeasures; and proven... | 06/26/2007 |
| 7234574 | Damping coefficient switching-type hydraulic damper There is disclosed a damping coefficient switching-type hydraulic damper that may automatically switch a damping coefficient without needing supply of energy from the outside at all, and also may always surely exert an energy absorption capacity greater than that of... | 06/26/2007 |
| 7220104 | Vibration reduction system for a wind turbine A wind turbine includes a tower, a nacelle supported at an upper end of a tower, a rotor having at least one blade and being arranged at the nacelle, and a vibration load reduction system disposed at either the tower or the nacelle. The vibration load reduction syst... | 05/22/2007 |
| 7188452 | Sleeved bracing useful in the construction of earthquake resistant structures A buckling restrained brace includes an elongate, hollow sleeve, an elongate yielding core extending substantially through the length of the sleeve, and a buckling constraining element between the yielding core and the inner surface of the hollow sleeve and spaced a... | 03/13/2007 |
| 7168210 | Support block and system for use on roofs A support block for supporting objects on a roof. The support block is a moulded elastomeric block of pyramidal shape with a substantially hollow core. The support block can be used as is or in a system whereby a galvanized steel channel is secured to the top wall o... | 01/30/2007 |
| 7131238 | Method of testing seismic braces Braces for bracing objects in structures against forces due to earthquakes are tested by subjecting components of the braces for attaching the braces to the object or structure to cyclic loading of approximately 15 cycles. The cyclic forces are applied to different ... | 11/07/2006 |
| 7048473 | Vibration-proof construction method A vibration-proof construction method for preventing and reducing vibration around a structure which generates vibration or receives vibration includes construction work wherein a hard member having higher stiffness than the surrounding ground and a rubber elastic m... | 05/23/2006 |
| 6957516 | Acoustically intelligent windows A window having a frame with a windowpane disposed therein is provided. A first impedance discontinuity element is disposed between the windowpane and the frame adjacent a portion of a periphery of the windowpane. A second impedance discontinuity element is disposed... | 10/25/2005 |
| 6857231 | Propeller-controlled active tuned-liquid-column damper A propeller controlled active tuned-liquid-column damper (TLCD), which can control and suppress the vibration thereof, such as building, tower, bridge, vehicle, ship, offshore platform, facilities, and instrument, etc. This invention is composed of a passive TLCD, o... | 02/22/2005 |
| 6826873 | Aseismic system The Improved Aseismic System of the present invention isolates a structure from seismic forces, and wind forces and seismic forces combined. During an earthquake the structure will slide on seismic filters, while gas dampeners act as shock absorbers to absorb the tr... | 12/07/2004 |
| 6701680 | Low cost, light weight, energy-absorbing earthquake brace An energy absorbing seismic brace for both retrofit and new construction. The brace comprises a central strut of either multi-legged or homogeneous section fabricated from low strength aluminum, whose characteristics maximize the seismic energy absorption... | 03/09/2004 |
| 6601350 | Structure for installing a viscous vibration-damping wall and method of installing the same In a structure for installing a viscous vibration-damping wall, high-strength bolt hole portions are provided for connecting a lower-floor girder and a base plate forming part of the wall. Gusset plates are disposed on both sides of the group of the high-... | 08/05/2003 |
| 6530182 | Low cost, light weight, energy-absorbing earthquake brace An energy absorbing seismic brace for both retrofit and new construction. The brace comprises a central strut of either multi-legged or homogeneous section fabricated from low strength aluminum, whose characteristics maximize the seismic energy absorption... | 03/11/2003 |
| 6457285 | Aseismic system The Improved Aseismic System of the present invention includes five major components which interact to isolate a structure from seismic forces and wind forces and seismic forces combined. These five components are: the double-action hydraulic ram assembli... | 10/01/2002 |
| 6385917 | Base isolation device with damping mechanism A base isolation device used for the purpose of absorbing a quake of the ground by, for example, an earthquake to thereby reduce the quake of a building, or used for the purpose of reducing a quake applied to a precision machinery and tool in transportati... | 05/14/2002 |
| 6367207 | Friction resistance generator The present invention relates to a friction resistance generator capable of always generating a stable frictional force even if the opposed surfaces of a rotary member and a passive member have a curved shape such as a circumferential surface or a spheric... | 04/09/2002 |
| 6354047 | Columnar structure with earthquake resistance imparted thereto and method of reinforcing the earthquake resistance of a columnar structure A first plate member and a second plate member are attached to a column member in such a manner as to be capable of undergoing relative displacement, and a viscoelastic material is disposed fixedly between the two plate members. As an alternative arrangem... | 03/12/2002 |
| 6324794 | Device using compressible fluid as switchable fluid spring for shock and vibration isolation and mitigation Apparatus is disclosed for protecting a structural object from the potentially harmful effects of a cyclic event such as an earthquake or high wind loads. A fluid spring is employed to stiffen the structural object and absorb kinetic energy stored by the ... | 12/04/2001 |
| 6119414 | Rocket damping device A damping device includes a plurality of rockets (3) each having a nozzle (4) directed outward and disposed at the four corners on the upper floor of a building structure (1) and a device for sensing an earthquake and operating the rockets. With this arra... | 09/19/2000 |
| 5979126 | Seismic response control method for structure There is disclosed a seismic response control method for a structure, comprising the steps of installing a seismic response control device in a structural component of stiffness Kf ; and controlling a characteristic of story restitutive force b... | 11/09/1999 |
| 5915508 | Tuned mass damper An apparatus for damping dynamic response in a primary structure in one, two or three dimensions, includes a secondary mass, and a spring and a viscoelastic element, the spring and viscoelastic element interposed between the primary structure and the seco... | 06/29/1999 |
| 5800078 | Earthquake attenuating apparatus An earthquake attenuating apparatus is located adjacent to a fault line for reducing the intensity of a potential earthquake. The apparatus includes a vibration generator which is located adjacent to the fault line and a vibration transmitter for transmit... | 09/01/1998 |
| 5797227 | Structure stabilization system A stabilization system protects a structure, comprising at least a slab and having a foundation formed in the earth, from the effects of seismic disturbances. Pendulum support elements, secured at upper ends to respective support columns affixed to the fo... | 08/25/1998 |
| 5765313 | Method and apparatus for real-time structure parameter modification A method and apparatus for structural deflection control, as well as associated sequential controls that are based on new control laws. The apparatus of this invention is of relatively low cost and performs better than prior art devices. The essence of th... | 06/16/1998 |
| 5758455 | High pressure servo-mechanism control system for civil or architectural structure The present invention relates to a high pressure servo-mechanism to be installed in a civil or architectural structure to alleviate dynamic reaction of the protected structure and to prevent the possible damages to the structure by earthquakes or typhoons... | 06/02/1998 |
| 5713163 | Vibration damping apparatus A vibration damping apparatus includes a frame having a rail member and end plates at longitudinal ends of the rail member. The frame is a hollow box-shaped element or a hollow tubular element. The rail member defines a downwardly arcuate surface. The fra... | 02/03/1998 |
| 5671569 | Seismic response controlled frame of bending deformation control type In a multi-storied frame building, a controlled frame member having means to damp seismic forces of deformation. A first vertical wall column has a top connected to a horizontal wall girder overhanging the wall column. A second wall column is erected in v... | 09/30/1997 |
| 5671984 | Exhibition apparatus A protective member is disposed in a contracted state thereof within an exhibition case for an exhibition apparatus. When a larger shaking of the exhibition case than a predetermined level is detected by a detector, an actuation mechanism expands the prot... | 09/30/1997 |
| 5666770 | Vibration damping equipment A mass supported on a structure is driven by an actuator such that it moves in a direction of a vibration of the structure. A mechanism for detecting state variables relating to the vibration of the structure and a Kalman filter for performing a predeterm... | 09/16/1997 |
| 5592791 | Active controller for the attenuation of mechanical vibrations A plural orthogonal feed forward control system with an actuator system for installation on an upper floor or area of a building as an integral part of a building's structural supports to control seismic, wind, or wave disturbances to the structure or bui... | 01/14/1997 |
| 5576971 | Apparatus for displaying damping effect or base isolation effect An apparatus for visually or audibly displaying swinging reducing effect in a structure with a damper or a base isolator, which reduces swinging of building structure during earthquake and increases performance characteristics and structural safety of the... | 11/19/1996 |
| 5564536 | Tuned mass damper An apparatus for damping dynamic response in a primary structure, includes a secondary mass, and a spring and a viscoelastic element, the spring and viscoelastic element interposed between the primary structure and the secondary mass. The apparatus may in... | 10/15/1996 |
| 5560161 | Actively tuned liquid damper The invention concerns the use of actively tuned liquid dampers to quench vibrations in large civil structures. Such vibrations may be induced by earthquakes or high winds. The effective length of the liquid damper tank determines the natural frequency of... | 10/01/1996 |
| 5558191 | Tuned mass damper An apparatus for damping dynamic response in a primary structure in one, two, or three dimensions, includes a secondary mass, and a spring and a viscoelastic element, the spring and viscoelastic element interposed between the primary structure and the sec... | 09/24/1996 |
| 5544452 | Method of and apparatus for damping the vibration of a building A passive vibration-damping unit in which movable upper members with a weight mounted thereon are superposed on fixed lower members with roller members interposed therebetween is installed in a highest story of a high-rise building. An active vibration-da... | 08/13/1996 |
| 5544451 | Vibration suppression device for a structure A vibration suppression device includes a plurality of first elongated linear guides on which a first support table is slidably mounted. A first adjustable damping system is provided for damping slidable movement of the first support table on the pluralit... | 08/13/1996 |
