Patent ID: 8672202

Claim:
A system for carrying loads comprising: a harness; a back frame; a load base; vertical-only-free movement connecting means to connect said load base to said back frame so that said load base can move freely with respect to said back frame along one linear axis within a defined range substantially without transmitting vertical load onto said back frame and be steadily connected to said back frame in the other two linear axes and in the three rotational axes; load support and adjusting means having upper end and lower end to support said load base from below, said load supporting means is connected to said load base at a location so that when a load is attached onto said load base its center of gravity is substantially vertically above said connection point when said system is in use; and gliding means connected to the lower end of said support and adjusting means, to enable easy gliding of said system on the ground when in touch with the ground; wherein said load support and adjusting means further comprise: a first folding means to allow temporary backward rotation of said load support and adjusting means in response to bumping of said gliding means into a local protrusion on the ground, said rotation is returnable by retuning means; and a second folding means to allow folding of said load support and adjusting means upwardly to a stowing position.