Ball-in-cone seismic isolation bearing

Details Ball-in-cone seismic isolation bearing Ball-in-cone seismic isolation bearing

1994-02-09

1997-02-04

Footland, Lenard A.

Bearings

Linear bearing

Plain bearings

F16C 2904

Patent

active

055991068

ABSTRACT:
A seismic isolation bearing for structures consisting a steel ball sandwiched between two horizontal, steel load plates. The load plates have a shallow, concave, conical recess of vertical, collinear axis. The cone axis passes through the ball centerline at rest. The load plates are bolted the structure under and above. Gravity restores the bearing's displacement in the lack of external forces. Lateral bearing forces are independent of displacements.

REFERENCES:
patent: 4644714 (1987-02-01), Zayas
patent: 4726161 (1988-02-01), Yaghoubian
patent: 5071261 (1991-12-01), Stuve

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