Power trowel with cam-actuated blade pitch adjustment mechanism

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United States of America Patent

PATENT NO 4577993
SERIAL NO

06704379

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
ALLEN ENGINEERING CORPORATION819 SOUTH FIFTH STREET PARAGOULD AZ 72450

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Allen, J Dewayne Paragould, AR 75 1461
Randolph, Edward F Paragould, AR 1 16

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