Operating mechanism for overlapping panels type doorway closures
US4056162A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1977 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Feb 7, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/104
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Operating mechanism for doorway closures of the rollably suspended overlapping and interdependently laterally moving two panels type. The operating mechanism comprises a transversely extending shaft which is powerably turnable in both angular directions and which is laterally co-movably mounted to the slower near-panel. There is a dual-arms lever which at its medial turning-point is co-turnably attached to the transverse shaft and is laterally co-movable with the near-panel. A far-link has its ends respectively pivotably attached at a lofty elevation of the far-panel and to the lever second-arm a judicious finite-distance from the turnable shaft, and a near-link has its ends respectively pivotably attached to the lever first-arm and at a lofty immovable-location of the doorway nearward framework. For the accordingly interdependently laterally movable overlapping closure panels, there are stop means to limit turning of the transverse shaft and lever in both angular directions as the panels approach fully-open and fully-closed positions across the doorway opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.