Automatic surface-treating apparatus
US4782550A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1988 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Feb 12, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L2201/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Improved automatic surface-treating apparatus of the type supported by and traversing a horizontal surface unattended. The apparatus includes mobility members for movement in a principal direction and side-step members having rotational axes a given distance above the surface. Each side-step member has a first sector with a far periphery spaced from its axis by more than the given distance, and a second sector with a near periphery spaced from its axis by less than the given distance. This arrangement allows a single rotation of the side-step members to accurately lift and move the apparatus laterally through a predetermined distance, to a new surface-treatment path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.