Concrete saw with multispeed drive
US6318353A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2000 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Feb 21, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23D47/12
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A concrete saw for cutting concrete and other hard surfaces or substrates. The concrete saw includes a multispeed drive for transmitting power from the saw's engine to the saw's cutting blade. The multispeed drive includes a flexible belt for transmitting rotational energy from the drive shaft of the engine to the drive shaft for the blade, and a releasable tension device for placing tension on the belt and ensuring good engagement between the sprockets of the drive shafts. Upon release of the tension device, a user may move the belt to an alternate position on the sprockets and retension the belt, thereby providing a different drive ration and speed for the cutting blade at a constant engine speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.