Power trowel with cam-actuated blade pitch adjustment mechanism

Details Power trowel with cam-actuated blade pitch adjustment mechanism Power trowel with cam-actuated blade pitch adjustment mechanism

E - Fixed Constructions

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F

72/148

E04F 21/08 (2006.01) E04F 21/24 (2006.01)

Patent

CA 1250760

POWER TROWEL WITH CAM-ACTUATED BLADE PITCH ADJUSTMENT MECHANISM ABSTRACT OF THE DISCLOSURE An engine-driven trowel includes a handle, a set of blades rotated within a single plane, a blade pitch control unit having a swash plate, a swash plate actuator arm and a pivot pin for pivotally coupling the actuator arm to the trowel. A blade pitch adjustment mechanism includes a lever-actuated cam assembly which engages and deflects the outboard end of the swash plate actuator arm. Up and down movements of the lever rotate the cam and displace the swash plate actuator arm to change the pitch of the trowel blades.

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