E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
E04F 21/24 (2006.01) E01C 19/22 (2006.01) E01C 19/44 (2006.01)
Patent
CA 2486908
A walk behind rotary trowel is configured to be "dynamically balanced" so as to minimize the forces/torque that the operator must endure to control and guide the trowel. Characteristics that are accounted for by this design include, but are not limited to, friction, engine torque, machine center of gravity, and guide handle position. As a result, dynamic balancing and consequent force/torque reduction were found to result when the machine's center of gravity was shifted substantially relative to a typical machine's center of gravity. Dynamic balancing can be achieved most practically by reversing the orientation of the engine relative to the guide handle assembly when compared to traditional walk behind rotary trowels and shifting the engine as far as practical to the right. This shifting has been found to reduce the operational forces and torque the operator must endure by at least 50% when compared to traditional machines.
Dauffenbach Darrin W.
Goldberg Richard D.
Kruepke Gregory
Lutz Todd J.
Ridout & Maybee Llp
Wacker Corporation
Wacker Neuson Production Americas Llc
LandOfFree
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