Folding door apparatus
US4846245A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1987 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Aug 27, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Folding door apparatus includes panels which are hinged to rotate into a stacked position over head as a winding drum draws a cable attached to the lowermost panel. Alternate panels have first roller brackets carrying respective first rollers which ride in a vertical first trackway, and second brackets carrying spring loaded second rollers which ride in a second trackway angled at the top to determine folding sequence of the panels. Each first bracket has a cam surface which acts on a stop to pivot it through a respective aperture in the first trackway as the respective panel approaches the horizontal position. The first rollers are thus supported by the pivotable stops when the panels are in the horizontal position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.