Retractable electric cord receiving device and ventilation apparatus
US7490706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2005 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Aug 10, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/34
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A cord winding mechanism for an electrically powered device such as a vacuum cleaner. The cord winding mechanism may be used with a device having an electric motor. The mechanism may include a cord receiving member for receiving a cord. The cord receiving member may define an interior space and have an axis. The mechanism may include a biasing member that may transmit a rotational force to the cord receiving member to rotate the cord receiving member about the axis. The mechanism may include a retention member that may selectively prevent the cord receiving member from rotating under the rotational force of the biasing member. The cord receiving member may be adapted to receive at least part of the motor inside the interior space of the cord receiving member. The mechanism may include ventilation openings for providing ventilation An electric motor assembly may include the mechanism and a motor. An electric appliance may include a housing and the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.