Abstract: A damping assembly for a structure includes a housing with a first fixed end and a second movable opposite end. A first translatable portion of the housing is slidably movable relative to an adjacent second section of the housing, the former being fixedly secured to a base when the structure is under load. A viscous damper disposed within the housing is engaged only after the first translatable section has first moved beyond an initial predetermined distance indicative of a higher amplitude loading event. At least one biasing feature prevents the viscous damper from operating until the first translatable section has first moved beyond the initial predetermined distance.

Abstract: A hydraulic damping assembly includes a housing having a first moving end and a second opposing fixed end. A lockout assembly disposed at the fixed end of the housing includes at least one lockout pin that is configured to selectively occlude an orifice extending into at least one fluidic circuit interconnecting various hydraulic chambers of the damper.

Abstract: A device (1) for supporting an equipment (2), especially an upstanding electrical equipment from vibrations is disclosed. The device comprises a base plate (3), a set of support adapters (7), a set of viscous dampers (5) connecting the base plate to the support adapters and a set of wire rope dampers (6), wherein the set of wire rope dampers bear the base plate and connect the base plate to the support adapters. Further, the set of support adapters connect the viscous dampers and the wire rope dampers to a foundation plate by bolts or alternatively to a shake table via shake table adapters. A set of angular fixtures connect the support adapters to the base plate by means of the viscous dampers. In a preferred embodiment of the device the base plate is orthogonally shaped.

Abstract: A damping assembly for a structure includes a housing with a first fixed end and a second movable opposite end. A first translatable portion of the housing is slidably movable relative to an adjacent second section of the housing, the former being fixedly secured to a base when the structure is under load. A viscous damper disposed within the housing is engaged only after the first translatable section has first moved beyond an initial predetermined distance indicative of a higher amplitude loading event. At least one biasing feature prevents the viscous damper from operating until the first translatable section has first moved beyond the initial predetermined distance.

Abstract: A device (1) for supporting an equipment (2), especially an upstanding electrical equipment from vibrations is disclosed. The device comprises a base plate (3), a set of support adapters (7), a set of viscous dampers (5) connecting the base plate to the support adapters and a set of wire rope dampers (6), wherein the set of wire rope dampers bear the base plate and connect the base plate to the support adapters. Further, the set of support adapters connect the viscous dampers and the wire rope dampers to a foundation plate by bolts or alternatively to a shake table via shake table adapters. A set of angular fixtures connect the support adapters to the base plate by means of the viscous dampers. In a preferred embodiment of the device the base plate is orthogonally shaped.

Abstract: A hydraulic damping assembly includes a housing having a first moving end and a second opposing fixed end. A lockout assembly disposed at the fixed end of the housing includes at least one lockout pin that is configured to selectively occlude an orifice extending into at least one fluidic circuit interconnecting various hydraulic chambers of the damper.

Abstract: A seismic isolation assembly is defined by a first support plate and a second support plate disposed in parallel relation with a spacing being provided between the support plates. The first support plate is connected to ground and the second support plate is attached to a structure to be isolated. A set of wire rope isolators are disposed between the first and second support plates as well as at least one linear damper that is angularly disposed and mounted between the first and second support plates.

Abstract: A device (1) for supporting an equipment (2), especially an upstanding electrical equipment from vibrations is disclosed. The device comprises a base plate (3), a set of support adapters (7), a set of viscous dampers (5) connecting the base plate to the support adapters and a set of wire rope dampers (6), wherein the set of wire rope dampers bear the base plate and connect the base plate to the support adapters. Further, the set of support adapters connect the viscous dampers and the wire rope dampers to a foundation plate by bolts or alternatively to a shake table via shake table adapters. A set of angular fixtures connect the support adapters to the base plate by means of the viscous dampers. In a preferred embodiment of the device the base plate is orthogonally shaped.

Abstract: A visco-elastic damping assembly includes a mount housing having first and second ends and a hollow interior. A piston assembly disposed within the mount housing includes axially opposed first and second piston rod ends in which the first piston rod end is defined by a first diameter and the second piston rod end is defined by a second diameter substantially larger than the first diameter. A high pressure hydraulic reservoir is defined within the mount housing wherein an applied load component acting on the second piston rod end causes corresponding movement of the piston assembly against fluid retained in the hydraulic reservoir, enabling a first static spring rate as well as a second higher dynamic spring rate.

Abstract: A pseudo-linear hydro-pneumatic isolation spring includes a cylinder having an interior partially filled with a hydraulic fluid as well as a piston assembly that is movably disposed within the cylinder including a piston head and a piston rod. A plurality of accumulators are fluidically connected to the interior of the cylinder in parallel, each of the accumulators being charged to a different pressure and size so as to actively engage the cylinder only after a threshold pressure force based on fluid displacement of the piston in the cylinder has been reached.

Abstract: A seismic isolation assembly is defined by a first support plate and a second support plate disposed in parallel relation with a spacing being provided between the support plates. The first support plate is connected to ground and the second support plate is attached to a structure to be isolated. A set of wire rope isolators are disposed between the first and second support plates as well as at least one linear damper that is angularly disposed and mounted between the first and second support plates.

Abstract: A seismic isolation assembly is defined by a first support plate and a second support plate disposed in parallel relation with a spacing being provided between the support plates. The first support plate is connected to ground and the second support plate is attached to a structure to be isolated. A set of wire rope isolators are disposed between the first and second support plates as well as at least one linear damper that is angularly disposed and mounted between the first and second support plates.

Abstract: A seismic isolation assembly is defined by a first support plate and a second support plate disposed in parallel relation with a spacing being provided between the support plates. The first support plate is connected to ground and the second support plate is attached to a structure to be isolated. A set of wire rope isolators are disposed between the first and second support plates as well as at least one linear damper that is angularly disposed and mounted between the first and second support plates.

Abstract: A pseudo-linear hydro-pneumatic isolation spring includes a cylinder having an interior partially filled with a hydraulic fluid as well as a piston assembly that is movably disposed within the cylinder including a piston head and a piston rod. A plurality of accumulators are fluidically connected to the interior of the cylinder in parallel, each of the accumulators being charged to a different pressure and size so as to actively engage the cylinder only after a threshold pressure force based on fluid displacement of the piston in the cylinder has been reached.

Abstract: A weight compensating shock isolator assembly includes at least one spring with preload to return the isolator to an initial position, the at least one spring exerting a spring force that changes during the isolator stroke. The isolator includes a hydraulic cylinder containing hydraulic fluid and a piston that moves relative to the hydraulic cylinder, wherein hydraulic fluid is forced through or around a piston head during relative movement thereof with respect to the hydraulic cylinder to create a resisting force that is stroke and velocity dependent, with the damping constant C changing with stroke.

Abstract: A weight compensating shock isolator assembly includes at least one spring with preload to return the isolator to an initial position, the at least one spring exerting a spring force that changes during the isolator stroke. The isolator includes a hydraulic cylinder containing hydraulic fluid and a piston that moves relative to the hydraulic cylinder, wherein hydraulic fluid is forced through or around a piston head during relative movement thereof with respect to the hydraulic cylinder to create a resisting force that is stroke and velocity dependent, with the damping constant C changing with stroke.

Abstract: An energy absorbing system having a stanchion, a linearly extendable energy absorber coupled to the stanchion, a net coupled to the energy absorber, wherein the net transfers force to the energy absorber, and a securing mechanism that maintains tension between the net and the energy absorber until acted upon by tensile forces of at least a minimum threshold force, wherein at least a portion of the system is retractable into the ground.

Abstract: An energy absorbing system having a stanchion, a linearly extendable energy absorber coupled to the stanchion, a net coupled to the energy absorber, wherein the net transfers force to the energy absorber, and a securing mechanism that maintains tension between the net and the energy absorber until acted upon by tensile forces of at least a minimum threshold force, wherein at least a portion of the system is retractable into the ground.

Abstract: A heavy duty ground retractable automobile barrier for a railroad crossing. Concrete bunkers are placed at each side of a roadway. An upstanding concrete-filled steel pipe fixed in each bunker has a sleeve for rotational and axial movement. Shock absorbers are mounted on each sleeve. A net extends across the road and is attached to the opposite ends of the shock absorbers. Collision of an automobile with the net creates tensile forces in the net. The shock absorbers expand while rotating about the pipe's axis in response to tensile forces from the net that meet or exceed a minimum threshold. Forces from the net pass through the axis of the steel pipe. The net is stored in a pit transverse the roadway parallel to the railroad tracks and is raised and lowered as appropriate. The net includes a cable that extends across the road in a wave pattern, having peaks, valleys and midpoints, wherein tangents of the wave midpoints are at least 90 degrees from tangents of the peaks and valleys.

Abstract: A heavy duty ground retractable automobile barrier for a railroad crossing. Concrete bunkers are placed at each side of a roadway. An upstanding concrete-filled steel pipe fixed in each bunker has a sleeve for rotational and axial movement. Shock absorbers are mounted on each sleeve. A net extends across the road and is attached to the opposite ends of the shock absorbers. Collision of an automobile with the net creates tensile forces in the net. The shock absorbers expand while rotating about the pipe's axis in response to tensile forces from the net that meet or exceed a minimum threshold. Forces from the net pass through the axis of the steel pipe. The net is stored in a pit transverse the roadway parallel to the railroad tracks and is raised and lowered as appropriate. The net includes a cable that extends across the road in a wave pattern, having peaks, valleys and midpoints, wherein tangents of the wave midpoints are at least 90 degrees from tangents of the peaks and valleys.