专利名称：Self-leveling, self-propelled cart发明人：Stewart, Douglas James申请号：AU2011218629申请日：20110829公开号：AU2011218629A1公开日：20120315
摘要：#$%^&*AU2011218629A120120315.pdf##### 15 Abstract A self-levelling andself-propelled cart (10) enables items to be placed on and removed from the cart (10) ata convenient height. The cart (10) includes a base (20); side walls (30) extending upwardlyfrom the base 5 (20); a shelf (40) movable to a plurality of positions between a raisedposition and a collapsed position, wherein in the raised position the shelf (40) lies in ahorizontal plane adjacent a top of the side walls (30), and in the collapsed position theshelf (40) lies in a horizontal plane adjacent the base (20); a plurality of undriven wheels(50) mounted to the base (20); 10 and at least one driven wheel mounted to the base (20)for propelling the cart (10); wherein in an automatic mode, the shelf (40) is self levellingsuch that an uppermost item placed on the shelf (40) is adjacent the top of the side walls(30). 1/5 10 30 30A 30 2005 500 FIGi1
申请人：Queensland Library Supplies Pty Ltd
代理人：Fisher Adams Kelly
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