Centrifugal switch bypass for reverse tumble dryers
US8872074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2007 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Apr 20, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2105/28
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Systems and methods for bypassing a centrifugal switch are disclosed. The systems may include a bypass relay operatively connected to the heating element and configured to bypass the centrifugal switch prior to the drum reversing rotational direction, and allow the heating element to remain energized during the drum reversing rotational direction. The centrifugal switch bypass circuit further includes a relay hold circuit operatively connected to the bypass relay and configured to cause the bypass relay to continue bypassing the centrifugal switch during the drum reversing rotational direction. The method may include, once the drum begins reversing the rotational direction, utilizing a bypass relay to bypassing the centrifugal switch. Finally, the method may include utilizing a relay hold circuit to cause the bypass relay to continue bypassing the centrifugal switch during reversal of the rotational direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.