Panel shutter assembly
US5072766A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1991 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Jan 3, 2011 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/0638
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a panel shutter assembly including a plurality of shutter panels which are movable up and down along a pair of transversely spaced upstanding guide rails, a pair of chains to which the panels are fastened one after another, a set of sprockets engaging the chains for moving the chains in either direction to move the panels to open and close a shutter opening, and a pair of panel supporting rails from which the panels are suspended in a panel storage space when the shutter opening is opened, the sprockets consist of a pair of first sprockets for moving the panels up and down and a pair of sound sprockets spaced horizontally apart from the first sprockets and provided between the first sprockets and the panel storage space for moving the panels horizontally, and the panel supporting rails extend horizontally. The horizontal supporting rails enable a reduction in height of a box defining the panel storage space. A guide plate or plates can be provided in the box for holding each chain to ensure its horizontal movement between one of the first sprockets and one of the second sprockets and thereby the smooth movement of the panels in the box. Each of the second sprockets can be formed…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.