Seismic motion-damper for upstanding electrical equipment
US3973078A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1974 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Dec 30, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B5/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A seismic damper device is provided between the supporting plate adjacent the bottom of an upstanding piece of electrical apparatus and the lower main frame support members, supporting said upstanding electrical equipment, so that any relative motion between the upstanding column structure and the main lower-disposed frame support structure is restricted. Preferably, a liquid-filled dash-pot assembly, or energy-absorbing device, is utilized at one or more locations extending between the lower supporting plate member of each upstanding column structure and the lower-disposed main supporting framework. In one form of the invention there are provided three equally-spaced radially-extending support arms extending outwardly from the main supporting plate disposed adjacent and fixed to the lower end of each upstanding column structure. A hydraulic damper assembly is provided for each support arm and has its upper end secured to the outer end of the particular support arm, and the other end of the said damper assembly is attached to the main lower disposed supporting framework structure of the electrical equipment. Any relative motion between the radially-outwardly-extending support arms …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.