Concrete finishing trowel
US7674069B2 · kind B2 · utility
13Cited by
12References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 22, 2005 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Apr 22, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/247
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A concrete finishing trowel comprising at least one rotor which is mounted on a frame and is provided with a rotatably driven shaft and several blades that are mounted on the driven shaft. A blade deflection mechanism moves the blades on a path that deviates from a circular path relative to the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.