Patent ID: 7004094

Claim:
A system for reducing skin friction drag on a surface of a moving object, said system being comprised of a drag reducing substance that comprises a pressurized injectant and a user-controllable means for introducing the drag reducing substance at or near the surface wherein said user-controllable means for introducing the drag reducing substance includes a source of the pressurized injectant, an injector means for injecting the injectant at or near the surface, means for directing flow of the pressurized injectant from the source to the injector means, and control means for a user to control the flow, and wherein the source of a pressurized injectant is comprised of a tank for containing pressurized injectant and at least one valve for controlling a flow of injectant into and out of the tank, and wherein the user-controllable means for introducing the drag reducing substance includes means for causing flow in at least one of the modes from the group consisting of burst mode, steady state mode and variable mode, and wherein the at least one valve includes a schrader valve.