Road structure – process – or apparatus – Apparatus – Screed or drag
Reexamination Certificate
2007-02-13
2008-08-05
Addie, Raymond W (Department: 3671)
Road structure, process, or apparatus
Apparatus
Screed or drag
C404S083000, C404S114000
Reexamination Certificate
active
07407339
ABSTRACT:
A wheeled strike-off apparatus is movable over a surface of uncured concrete or subgrade materials and is operable to establish a desired grade of the uncured concrete surface or subgrade surface. The apparatus includes a wheeled support and a plow assembly. The plow assembly may be adjustably mounted to a front frame portion and may be vertically adjustable relative to the frame portion. The plow assembly may include a plow member for engaging and establishing the desired grade and/or may include a vibrating member for vibrating and smoothing the concrete after the plow member establishes the desired grade. The apparatus may include a user input that is adjustable by an operator to adjust a down pressure of the plow assembly at the concrete when the wheeled support is moved in a rearward direction.
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European Search Report for corresponding European Application No. 05784217.1.
Halonen Philip D.
Keranen Michael R.
Kieranen Carl B.
Pietila Mark A.
Stein Russ E.
Addie Raymond W
Somero Enterprises, Inc.
Van Dyke Gardner, Linn & Burkhart, LLP
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