Abstract: An improvement in the structure of an anti-shock device utilized for buildings, important structures and bridge structures that is comprised of a base, a carrier, a slide block and a plurality of springs. A slip concavity of a sunken round curved recess is respectively formed in the base top surface and in the carrier bottom surface, and an upper slide block member and a lower slide block member are situated between the two slip concavities. One contact surface between the two slide block members and slip concavities is of a curved contour and the other surfaces are indented seating recesses. A spheroid coupling bearing is nested between the two seating recesses and the upper and lower slide block members are held together by the springs. As so assembled, the anti-shock device base is fastened under the columns of a building structure such that the building achieves the objectives of exceptional shock eliminating capability and greater building structure safety.

Abstract: In accordance with the present invention there is provided a force-resisting device for transmitting forces and dissipating and absorbing energy across a discontinuous structural element of a structure. The device includes at least one active element, the active element having defined force versus deflection properties and able to transmit force and dissipate and absorb energy, one end of the active element configured to be connected to a structure, and at least one frame element disposed about a discontinuous structural element, wherein the frame is configured to be connected to a second end of the active element, wherein the active element and the frame element configured to resist forces applied to the structure by transmitting forces across the discontinuous structural element.

Abstract: A stress transmission device arranged between a pile head of a foundation pile and an upper structural portion for transmitting stress between the foundation pile and the upper structural portion, to a structure which employs such a stress transmission device, and to a method of constructing such a structure. In the figures, a pile head member 5 is provided to the pile head 2a of the foundation pile 2, a structure support member 6 is fixed to an upper structural portion 3, and these mutually contact one another in the vertical direction via a first contacting surface 11 which defines a portion of a first imaginary spherical surface Sv1. And a prestressing steel rod 7 is fitted to the pile head member 5 and the structure support member 6 for holding them together in contact while pressing them together via the first contacting surface 11.

Abstract: 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 assemblies, the gas dampeners, the fluid flow control assemblies, the wind-sensitive pressure generators, and the seismic filters. Each double-action hydraulic ram assembly includes a large cylindrical housing encasing a hydraulic ram with a single two-side piston centered axially on the ram. During an earthquake the structure will slide on the rams depending on the direction of the motion caused by the tremor. The gas dampeners act as shock absorbers to absorb the tremors and keep the structure from impacting its foundation. The fluid flow control assemblies control the flow of incompressible fluid between the double-action hydraulic ram assemblies and the gas dampeners.

Abstract: 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 transportation etc. of the precision machinery and tool. The base isolation device comprises 1st and 2nd track rails disposed orthogonally to each other, a 1st slide member freely linearly movable along the 1st track rail, a 2nd slide member connected to the 1st slide member and freely linearly movable along the 2nd track rail, a ball screw for converting a linear motion of the 2nd slide member into a rotary motion, a rotary sleeve to which a rotation is given by the ball screw, a stationary sleeve forming an action chamber of damping force between it and an outer periphery face of the rotary sleeve, and a viscous fluid sealed in the action chamber.

Abstract: 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 spherical surface. In the present invention, when the rotary member is rotated in the predetermined direction while a load is applied to the passive member, the rollers supported rotatably on one of the rotary member and the passive member rotate while being in contact with the rotary member or the passive member, thereby generating a frictional force according to the load on the rollers. In this case, the rollers are installed rotatably on either one of the opposed surfaces of the rotary member and the passive member, and the rollers are arranged so as to be capable of coming into contact with the other of the opposed surfaces of the rotary member and the passive member.

Abstract: The invention described is a system for seismic isolation or vibration of structures which is simple, relatively inexpensive and readily used for smaller structures. It involves use of bearings comprising a ball (10) and ball seats (12, 18) interposed between the structure and its foundation. Either the ball itself (24) or the seat surface (15) on which it rolls is compressible, the resistance to that compression providing a frictional braking force resisting rolling of the ball. This serves to dampen relative movement between the structure and its foundation. There are described several alternative constructions of the friction ball which is the preferred central element in the bearing device. There may be a plurality of balls (44, 47) in each combination of balls and seats.

Abstract: A composition for reducing vibrations, including both damping structureborne vibrations and reducing radiated airborne noise. The composition is either a mixture of at least two different granular materials, or is a granular material having a bulk sound speed of less than 90 m/s. The damping properties of a mixture can be calculated from the bulk densities and stiffnesses of its individual components.