Drive for the door leaf of a conventional door
US8516912B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Mar 18, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18568
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A swing leaf operator having a closer portion. The closer portion has an output shaft, on which a cam disc is torsion-resistantly disposed, as well as a pressure roller. A closer spring presses the pressure roller against a running surface of the cam disc. The pressure roller is disposed such that, during an opening or closing of a swing leaf coupled to the output shaft, the pressure roller is moved along a path. The path bypasses the axial center of the output shaft and on account of the configuration of the running surface of the cam disc, in different modes of operation of the swing leaf operator at a respective opening angle of the swing leaf, a very similar or identical torque is respectively applied to the output shaft. The swing leaf operator has a drive motor in operational connection with the output shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.