Road structure – process – or apparatus – Apparatus – Means to agitate material
Reexamination Certificate
2007-01-02
2007-01-02
Hartmann, Gary S. (Department: 3671)
Road structure, process, or apparatus
Apparatus
Means to agitate material
Reexamination Certificate
active
11441665
ABSTRACT:
A vibratory concrete finishing tool includes an elongated handle formed with a cylindrical configuration having an uppermost end and a lowermost end. A concrete working device has a planar bottom surface adapted to engage a wet concrete surface, and a receiver for removably receiving the lowermost end of the handle. A clamping and vibration transmitting arrangement is coupled externally to the lowermost end of the handle. An engine-driven vibratory mechanism is fixed to the clamping and vibration transmitting arrangement so that the vibratory mechanism is held in spaced relationship with the handle. The vibratory mechanism has a spinning crankshaft assembly with an eccentric weight mounted thereon.
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Andrus Sceales Starke & Sawall LLP
Hartmann Gary S.
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