发明名称 Concrete pattern tamper having elastomeric body and neck
摘要 A tamper for imparting patterns through a die to a pliable surface, most commonly a newly poured concrete structure such as a walkway, is disclosed. In the tamper of this invention its base, including the integrated handle-receiving neck, is formed substantial entirely of an elastomeric material with a defined hardness, thus reducing or eliminating the severe physical shocks which are caused when a tamper strikes a die or a concrete surface at an off-line angle. The elastomer material must have a Durometer hardness in range of 50-95, preferably 70-95 and more preferably 85-95 as measured on the Shore A hardness scale. Numerous elastomers are suitable for use; polyurethane polymers are preferred. A single type of elastomer may be used for the entire base or two or more elastomers may be conjoined and assembled to form the base.
申请公布号 US2007041787(A1) 申请公布日期 2007.02.22
申请号 US20060331807 申请日期 2006.01.13
申请人 发明人 IRWIN JEFFERY A.
分类号 E01C19/35;E01C19/32 主分类号 E01C19/35
代理机构 代理人
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