Self-propelled vacuum cleaner having forward and reverse drive
US5285550A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Apr 20, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62B5/0073
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A self-propelled vacuum cleaner having a transmission assembly that selectively drives the vacuum cleaner in both forward and reverse directions. The transmission arrangement includes a first stage of speed reduction in the coupling of a drive motor and a transmission input shaft interconnected by sprockets and a primary drive belt. A pinion on the input shaft drives one of a pair of meshed counter-rotating gears. A clutch/sprocket is associated with each of the counter-rotating gears and a belt couples both of these clutch/sprockets to a common sprocket which through associated elements drives the wheels of the appliance. The input pinion, counter-rotating gears, respective clutch/sprockets and common output sprocket all rotate about axes parallel to the motor shaft. An actuating mechanism selectively energizes one or the other of the clutch/sprockets for forward or reverse propulsion of the appliance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.