R.m. Wade & Co.

Dqp LLC

Michael Burns Williams

Abe Qutub

Ted V Mercer

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.

Single-end-mount seismic isolator

A vibration-isolating device for mounting and/or supporting an apparatus in vibrational insulation from adjacent structures, and a method for fabricating the vibration-isolating device. The vibration-isolating device includes a housing with a side wall portion joined to an end cap. A cushion is disposed on an inner surface of the side wall portion. The cushion is at least partially spaced from the end cap to form an interior compartment. A displaceable member is affixed to the cushion, extending away from the end cap. The displaceable member moves relative to the housing to dampen vibrations or sudden forces exerted on either the member or the housing.

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Lake Oswego, OR, United States of America

Michael Burns Williams