Traffic cone

Details Traffic cone Traffic cone

2005-08-16

2005-08-16

Will, Thomas B. (Department: 3671)

Road structure, process, or apparatus

Traffic steering device or barrier

C116S06300T

Reexamination Certificate

active

06929419

ABSTRACT:
A traffic cone includes a frustum-conical body and a base. The frustum-conical body has a hole in an upper end surface for a signal lamp, and a partial portion of its circumferential wall is thicker than another portion to form a gap between every two traffic cones stacked-up for easily taken off. The frustum-conical body has its bottom formed with a flange consisting of an upper and a lower annular wall and short ribs formed between the upper and the lower annular wall. The upper and the lower annular wall respectively have connect holes facing one another. The upper annular wall has an auxiliary material filling holes beside every connect hole and the lower annular wall has projecting arms. The base has a center hole to fit around the flange of the frustum-conical body to be combined with the same body as integral.

REFERENCES:
patent: 3913518 (1975-10-01), Kaplan
patent: 4979461 (1990-12-01), Provence, Jr.
patent: 5036791 (1991-08-01), Thurston
patent: 5199813 (1993-04-01), Nagler
patent: 5560732 (1996-10-01), Kulp et al.
patent: 5888016 (1999-03-01), Ahn
patent: 6053657 (2000-04-01), Signorelli
patent: 6199504 (2001-03-01), Freeman

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