Carpet cleaning device
US4272861A · kind A · utility
19Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Sep 28, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L11/34
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The carpet cleaning device of this invention includes a liquid application means, liquid removal means and carpet brushing means. A reciprocating motion is provided to a pivoted brush by means of a rotary shaft having an oblique crank portion carrying a bearing whose outer race is connected to the brush. The shaft axis, center line of the bearing, and the brush pivot axis all intersect at a common point thus transforming rotary motion of the shaft to an arcuate, reciprocating motion of the brush.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.