Transmission neutral locking arrangement for a self-propelled vacuum cleaner
US5974622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | May 8, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/2863
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A self-propelled upright vacuum cleaner is provided having a lower portion and an upright handle portion pivotally attached to the floor engaging portion for a pivotal motion between an upright storage position and a pivotal operating position. A drive wheel mounted to the floor engaging portion. A transmission operatively connected to the drive wheel and a motor drivingly connected to the transmission for driving the drive wheel in forward and reverse. A transmission actuator arm pivotally mounted to the floor engaging portion adjacent to the transmission for pivotal motion about a pivot axis located at a central portion of the actuator arm. A manual actuator mounted to the handle portion. The manual actuator is operatively connected to the actuator arm, whereby when an operator actuates the manual actuator actuator arm pivots in first and second directions, respectively, from a neutral position, such that the actuator arm actuates the transmission to place the transmission in forward and reverse, respectively. First and second cams extend from the handle portion and are located to engage the actuator arm at two locations spaced to either side of the pivot axis of the actuator arm…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.