Rolling shutter and shutter drive
US5586592A · kind A · utility
Inventor
Key dates
| Filing date | Apr 25, 1995 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Apr 25, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/68
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rolling shutter includes a plurality of elongated shutter elements each having a plurality of alternate ribs and valleys formed on each side thereof is pivotally coupled by a plurality of link elements interleaved between the shutter elements. The shutter element and link array thus formed includes a repeated subset combination of coupling links and shutter elements which facilitate the pivotal motion of a shutter element pair about a common link to form a reinforcing portion of the shutter element array. A tractor drive mechanism includes a plurality of drive belts having engaging teeth for coupling to the alternate ribs and valleys of the shutter elements to provide positive drive force in either direction. A spring-biased take-up roll is supported in proximity to the tractor drive to receive the portion of the shutter element array withdrawn into the tractor drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.