Dynamic damper and method for detecting malfunction of dynamic damper
US5168967A · kind A · utility
6Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Oct 1, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H9/0215
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed is a dynamic damper which is to absorb building vibrations in any horizontal directions, not restricted to one direction. For example, it comprises an oscillating body which is held to move horizontally, a plurality of ball screws which are arranged perpendicularly to each other with a height difference among them and which have a nut portion on the side of the oscillating body and a screw shaft engaging with said nut portion, and motors which reciprocate the oscillating body according to the period of vibration of the building by turning the ball screws.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.