发明名称 |
Traffic channeling devices |
摘要 |
Traffic channeling device includes a deformable plastic drum and a rubber collar insertable over the drum to act as ballast for the drum. The rubber collar comprises a bead portion and an integral side wall portion of a recycled truck tire. When the rubber collar is inserted over the drum, the rubber collar gives the drum a relatively low center of gravity and grips the ground over a relatively large surface area to resist tipping of the drum and eliminate walking of the drum on the ground.
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申请公布号 |
US5234280(A) |
申请公布日期 |
1993.08.10 |
申请号 |
US19920860179 |
申请日期 |
1992.03.30 |
申请人 |
PLASTIC SAFETY SYSTEMS, INC. |
发明人 |
COWAN, DAVID A. |
分类号 |
E01F9/00;E01F9/012;E01F9/015;E01F13/00;E01F13/02;E01F13/04 |
主分类号 |
E01F9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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