发明名称 Adaptation to wheeled cart to enable pushing of multiple units
摘要 The present invention comprises sets of teeth that are spaced apart from each other in a sawtooth configuration and project horizontally outward from the front and rear ends of a hand propelled, wheeled cart. The front teeth of one cart are capable of intermeshing with the opposed rear teeth of another cart. The intermeshing teeth restrict the carts from independent lateral motion, so that when two or more carts are pushed from the rear, all carts stay in alignment with each other. This allows two or more carts to be pushed as one unit, either in a straight line or around turns.
申请公布号 US6550794(B1) 申请公布日期 2003.04.22
申请号 US19990451586 申请日期 1999.11.30
申请人 SPINDEL MARTIN;CINO NADINE 发明人 SPINDEL MARTIN;CINO NADINE
分类号 B60D1/00;B62B5/00;(IPC1-7):B62B1/00 主分类号 B60D1/00
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