Concrete saw with multispeed drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 20, 2001
Grant Date -
N/A
app pub date -
Feb 21, 2000
filing date -
Feb 21, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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