Toggle linkage seismic isolation structure
US5870863A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 1996 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Aug 8, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H9/028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A toggle linkage for incorporation into a frame of a structure, such as a building, including a first link having a shock absorber therein, a first end on the first link connected to a first area of the frame, a second link having a first end connected to a second area of the frame remote from the first area, a second end on the second link, a third link having a first end connected to a third area on the frame remote from the first and second areas, a second end on the third link, a second end on the first link connected proximate the second end of the second link, and the second ends of the second and third links being connected to each other by a metal plate which is welded therebetween and which flexes in the direction of its thickness and not in the direction of its width so as to maintain the longitudinal axes of the second and third links in the same plane when the toggle linkage is activated by a seismic event as before the toggle linkage was activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.