Automatic open and close device for door
US6449905B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/132
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device is structured to be integrated with a major components such as a movable unit and a stator contained in a rail member for easy removal from downward of the lintel, thus eliminating adjustment work on site. Since the door may be simply installed on the hanger, it can be easily installed and removed. Also, the stator and the hanger with rollers may be connected by clamping a projection strip formed on a bottom face of the stator from left and right sides thereof with the hanger with rollers installed on the door, or instead by engaging the hanger with rollers with an engagement portion provided on the stator from both side thereof. Consequently, connecting and releasing of the stator and the hanger is simplified and the ease of maintenance is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.