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US 2004/0164473 A1Published application
Single-end-mount seismic isolator
AssigneeDQP LLP dba Design Quality Products
InventorsAbe Qutub, Ted V. Mercer, Michael B. Williams
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AssigneeDQP LLP dba Design Quality Products
InventorsAbe Qutub, Ted V. Mercer, Michael B. Williams
Estimating the term…
A single-end-mount seismic isolator for protecting a structure from the effects of seismic shock or other external applied forces includes a load shaft that is secured at its first end to a mounting surface on which the structure is supported. So secured, the load shaft projects beyond a base of the structure, on which an actuator is supported. A resilient element, such as a friction spring, is operably interposed between the load shaft and the actuator to allow relative motion between the structure and the mounting surface in the event of a seismic shock or other external applied force. The resilient element also absorbs energy of such motion. The single-end-mount design facilitates seismic retrofitting of existing structures and servicing of seismic isolators in the field. In dual-action embodiments, the resilient element includes primary and secondary resilient elements for damping in two directions.
A seismic isolator for a structure supported on a mounting surface, the structure including a base having an inner surface facing the mounting surface and an outer surface opposite the inner surface, comprising:
An apparatus for protecting a structure from seismic shock or other external applied force, comprising
A seismic retrofitting method for an existing structure of the type including a base supported on a mounting surface and secured to the mounting surface via a threaded mounting stud that extends from the mounting surface through a hole or slot in the base and a nut threaded onto the mounting stud over the base, comprising:
Dependencies are inferred from the claim text.