Patent ID: 7258140

Claim:
A portable gas supply apparatus, comprising: a first storage tank including an internal cavity for holding a supply of a pressurized fluid at a relatively high pressure, the first storage tank being thermally uninsulated such that the pressurized fluid therewithin remains at ambient temperature; a first pressure reducing device having an inlet in fluid communication with the internal cavity of the first storage tank and an outlet, the first pressure reducing device reducing the pressure of fluid flowing therethrough from the relatively high pressure at the inlet to a first relatively lower pressure at the outlet; a manifold having a plurality of manifold connection points in fluid connection with one another, a first of the manifold connection points being in fluid communication with the outlet of the first pressure reducing device; a second storage tank including an internal cavity for holding pressurized fluid at the first relatively lower pressure, the internal cavity being in fluid communication with a second of the manifold connection points; and a first pneumatic connector fitting in fluid communication with a third of the manifold connection points; whereby, when a pressurized fluid is stored in the first storage tank at the relatively high pressure, a pneumatic tool connected to the first pneumatic connector fitting is provided with pressurized gas at the first relatively lower pressure.