Patent ID: 7213734

Claim:
A pneumatic tool drive system, comprising: a portable pressure source; a valve assembly comprising a collar having an outer surface, the valve assembly in communication with the pressurized fluid source; a regulating assembly adapted for releasable engagement with the outer surface of the collar of the valve assembly, wherein the regulating assembly comprises: a body having a first end, a second end, and at least one sidewall; an inlet port disposed therein the first end of the body, configured to engage the outer surface of the collar of the valve assembly, the inlet port having a distal end; a substantially cylindrical axial bore disposed therein the body, the bore substantially terminating at the distal end of the inlet port; an outlet port disposed therethrough the side wall of the body wherein the outlet port is in fluid communication with the axial bore; a cap for engaging an exterior surface of the body at the second end of the body, wherein the second end of the body and the cap define an interior cavity; a bias element disposed therein the interior cavity, supported by the second end of the body; and a plunger having a bonnet and a stem, wherein at least a portion of the stem of the plunger is disposed therein a portion of the axial bore and the bonnet is disposed therein the interior cavity, wherein the plunger is biased against the bias element for movement between a sealed position, arresting the flow of fluid between the inlet port and the outlet port, and an open position, allowing fluid flow between the inlet port and the axial bore, wherein the elongate stem comprises a stem section and a port section, wherein the stem section is cylindrical, wherein the distal end of the stem of the plunger defines a sealant cavity for frictional retention of a sealant, wherein the port section extends therefrom a distal end of the plunger, wherein the diameter of the port section is less than the diameter of the stem section, wherein the plunger further comprises a longitudinal fluid conduit extending substantially therethrough the plunger, and wherein the fluid conduit comprises an axial port therein the port section of the stem that extends therethrough a sidewall of the port section; and a pneumatic assembly adapted for releasable engagement with an outlet port of the regulating assembly.