E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
72/148
E01C 19/22 (2006.01) E04F 21/24 (2006.01)
Patent
CA 1273502
Abstract Dual Rotary Trowel A concrete troweling machine is illustrated as having two sets of troweling blades with a mechanism for setting the tilt of individual blade in a rotor assembly and a separate mechanism controlled by the handle position for progressively changing the tilt of individual blades during each rotation of each set of blades to generate blade reactive forces for propelling the machine in selected direction.
522127
Morrison Donald R.
Riches Mckenzie & Herbert Llp
LandOfFree
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