Lifting device of cordless covering
US10221619B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 2015 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Jan 21, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/3222
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A lifting device of a cordless covering includes a cord reel, a car, a driving module, a connecting cord, and a lifting cord. The cord reel has a cone section, and is pivoted on a headrail for free rotation. The car is received in the headrail for reciprocation. The driving module is received in the headrail to drive the cord reel to rotate in a predetermined direction. The connecting cord has opposite ends connected to the car and the cord reel, wherein the connecting cord is reeled in and out of the cone section of the cord reel when the cord reel rotates in different directions. The lifting cord runs around the car, and then extends out of the headrail to be fastened to a bottom rail. The cord reel and the driving module are helpful to precisely stop and bottom rail at any desired position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.