Adjustable internal double limit stop for roller shades
US10655388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2017 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Jun 21, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B9/88
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An architectural covering assembly includes a rotatable roller tube, a covering coupled to the rotatable roller tube, and first and second limit screws each having respective first and second ends. The second end of the first limit screw can engage the first end of the second limit screw. One of the limit screws is rotationally and axially fixed with respect to an end plate. The other of the limit screws is movable between rotationally locked and rotationally unlocked positions with respect to the end plate. Limit nuts are threadably coupled to external threads of the limit screws. In the rotationally locked position the one of the limit screws is axially and rotationally fixed with respect to the end plate, and in the rotationally unlocked position the other of the limit screws is rotationally movable with respect to the end plate to adjust an extension or retraction limit of the covering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.