E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
E01C 19/42 (2006.01) B28B 11/08 (2006.01) E04F 21/16 (2006.01) E04F 21/24 (2006.01)
Patent
CA 2312080
A concrete finishing trowel has one or more driven rotor assemblies coupled to an engine or other power source of the machine by a novel torque transfer system including at least one flexible shaft and possibly including a variable speed ratio torque converter assembly. The flexible shaft, preferably comprising a flexible wound wire shaft, bends to accommodate tilting movement of the associated rotor assembly that occurs upon a steering operation, thereby eliminating the need for high-maintenance universal joints or other, less durable equipment. The torque converter assembly, preferably taking the form of a pair of variable speed clutches each having variable diameter sheaves, permits the speed and torque ratios of the drive system to change with increases in engine speed so that the same machine can be effectively used for both low speed/high torque floating operations and for high speed burning operations. Multi-application use is further facilitated by moving the blades axially along their support arms to permit the blades to operate in either an overlapping mode or a non- overlapping mode.
Sartler Ronald R.
Smith Peter J.
Borden Ladner Gervais Llp
Wacker Corporation
LandOfFree
Concrete finishing trowel with improved rotor assembly drive... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Concrete finishing trowel with improved rotor assembly drive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concrete finishing trowel with improved rotor assembly drive... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1907265