Road structure – process – or apparatus – Apparatus – Screed or drag
Reexamination Certificate
2007-12-25
2007-12-25
Addie, Raymond W (Department: 3671)
Road structure, process, or apparatus
Apparatus
Screed or drag
C404S120000
Reexamination Certificate
active
11175469
ABSTRACT:
A subgrade preparation apparatus for preparing a subgrade surface for concrete to be placed thereon includes a base unit positionable on a support surface adjacent to a targeted subgrade area, an extendable boom extending from the base unit, and a subgrade head assembly adjustably mounted on the extendable boom. The subgrade head assembly includes a framework, a plow and a material moving device for moving material toward at least one side of the subgrade head assembly. The subgrade head assembly includes a plow end plate movably attached at an outer end of the plow and movable to a position where the plow end plate is generally vertical and forms an end portion of the plow to limit plowed material from flowing around the outer end of the plow as the subgrade head assembly is moved over and along the subgrade surface at the targeted subgrade area.
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SCRRR-EED™ concrete screed attachment by Van-Boh Systems, Inc. brochure, dated Jan. 1998.
Screeed King® TSK 308 brochure, published more than one year prior to the filing date of the present application.
“Are you tired of screeding concrete this way?”, Screeed King® TSK 308 brochure, published more than one year prior to the filing date of the present application.
Addie Raymond W
Somero Enterprises, Inc.
Van Dyke Gardner, Linn & Burkhart, LLP
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