Road structure – process – or apparatus – Apparatus – Screed or drag
Reexamination Certificate
2007-11-20
2007-11-20
Hartmann, Gary S (Department: 3671)
Road structure, process, or apparatus
Apparatus
Screed or drag
C015S235400
Reexamination Certificate
active
11277874
ABSTRACT:
A device for preparing a sloped mud surface around a drain prior to setting tile or stone includes one or more arms (i.e., rigid arms) attached to a sleeve and rotatably supported relative to a vertical axis defined by a vertical shaft and horizontal planar base. An adjustable clamp assembly releasably secures the device to a conventional drain, which may be secured to a drainpipe by pipe threads. The bottom edge of the arm provides a straight working edge. The arm can be freely moved (i.e., rotated) around the vertical shaft degrees, counterclockwise and clockwise. As the arm rotates around the vertical shaft the working edge sweeps over the floor mud surface, spreading and leveling the surface while scraping or sweeping away excess material.
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Hartmann Gary S
Young, P. A. Mark
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