Spring motor and window covering
US8087445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2009 |
| Grant date | Jan 3, 2012 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/3222
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The lift motor comprises at least one motor unit releasably connected to at least one spool unit. The spool unit comprises a spool for winding a cord and a gear operatively connected to the spool. The motor unit comprises a spring motor having a gear for engaging the gear of the spool. A window covering comprises a head rail supporting a motor as set forth above that supports a shade panel by the cord. A method of assembling a window covering comprises constructing a head rail having an internal space for receiving a motor. A motor is assembled based on the shade panel to be supported. The motor is inserted into the head rail and the cord is attached to or near the bottom or top of the shade panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.