Control arrangement for a propulsion unit for a self-propelled floor care appliance
US7725223B2 · kind B2 · utility
19Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Jul 3, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/325
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A self propelled upright vacuum cleaner is provided with a Hall effect sensor to provide a Hall voltage that varies according to the position of a handgrip maintained by the vacuum cleaner. A microprocessor generates a PWM control signal to control the movement of the vacuum based on the magnitude of the Hall voltage with respect to various response characteristics, including a non-linear logistic function. As such, the vacuum cleaner imparts a user-friendly responsiveness to the user during the operation of the vacuum cleaner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.