发明名称 Shopping cart capable of climbing stairs
摘要 A shopping cart that utilizes two pivotably connected tubular frames, each frame having two spaced apart legs with an axle carrying wheels extended between them. These frames are pivotably connected in a way which permits the movable frame to be tilted backward thus lifting the front wheels of the cart, and making the cart capable of climbing stairs. When not in use, the whole cart can be easily folded in a space saving unit convenient for storage in a small closet or the like.
申请公布号 US4722538(A) 申请公布日期 1988.02.02
申请号 US19860940101 申请日期 1986.12.10
申请人 FREYMAN, ALEXANDER 发明人 FREYMAN, ALEXANDER
分类号 B62B5/02;(IPC1-7):B62B5/02 主分类号 B62B5/02
代理机构 代理人
主权项
地址