Road structure – process – or apparatus – Drain or gutter – Street or curb inlet for surface drainage
Reexamination Certificate
2005-03-15
2005-03-15
Hartmann, Gary S. (Department: 3671)
Road structure, process, or apparatus
Drain or gutter
Street or curb inlet for surface drainage
C404S025000, C405S094000, C137S615000
Reexamination Certificate
active
06866444
ABSTRACT:
A device installed at a ditch on a road for preventing a backflow of sewage and a malodor is provided. The device includes a frame portion comprising a plurality of frames arranged in parallel with each other, a valve portion being opened or closed in a manner of a lever according to the weight of a flow of the sewage, and a cover portion for covering the frame portion and the valve portion. The cover portion includes flat drain holes formed in plural lines which are arranged in parallel with each other; flow velocity resistance embossings protruding upwardly with a predetermined height in a bar shape; inclined drain holes formed at both ends of the lengthwise direction and inclined upwardly; and a plurality of sliding prevention embossings protruding upwardly from an upper surface of the cover portion, for preventing walkers from sliding thereon.
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International Search Report taken from PCT application No. PCT/KR02/00482.
Graybeal Jackson Haley LLP
Hartmann Gary S.
My's Tech Co., Ltd
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