Patent ID: 11866956
Assignee: nan
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  A  B  F | IPC A  B  E  F

Claim 22:
23. The device of claim 1 further including a rocker frame, wherein:
the rocker frame is pivotably connected to the second structural member;
a pivotable, elastoplastically yielding rocker unit within which the elastoplastically yielding flexural member is located;
the first region located and secured at the first anchor to the first structural member;
the first structural member being of the form of a push rod, and a linking part of the rocker frame assembly, and sleeve guided at one end by the first end of the rocker unit, to secure and first anchor with the first end region of the flexure members, and linking and connecting pivotably at its second distal end to the rocker frame, indirectly connecting the first region of the flexure members to the rocker frame;
the second region located and secured at the second anchor to the rocker unit;
the second end of the rocker unit pivotably connected to the second structural member;
the second structural member being a structural base or foundation, or the second structural member being a pivotably based member or chord, and part of the rocker frame assembly, and indirectly connecting the second end of the rocker unit with a structural base or foundation;
the second anchor and second end region of the flexure member configured with free translational boundary conditions or free translational and free rotational boundary conditions, to allow the flexure member to flex, and the length along a flexing curve of the flexure member, between reaction points or reaction surfaces at anchors, to freely increase or decrease, and without generating tensile or compressive forces in the flexure member, and enable reaction resultants at the second anchor and second region to rotate with displacement of the yield element and remain orthogonal to the tangent plane of the flexure member;
the flexure member being configured to flex about a minor bending axis, and yield at at least one yield zones, while cyclically displacing while maintaining a constant resistive yield force;
the flexure member maintaining a constant resistive yield force within and across itself and between the first and second structural members;
the constant resistive yield force between first and second structural members, enabling a control structure to form an elastoplastic mechanism, also of constant resistive yield force;
and enabling the structure or control structure to control and limit forces developed within itself, and control and limit forces developed within its foundations or structural base, and control and limit response accelerations and dynamic forces developed within masses that it may be seismically supportive of, or within masses supported by other structures which it may be seismically supportive of, as it resists and endures with a constant resistive yield force, base motion or ground motion input due to a seismic event, including base or ground motion input from extreme seismic events, and from blast and ground impact at distance; and from loading and impact loading applied directly to control structure.