Abstract: A coupling apparatus and method is disclosed for coupling a first hose for enabling the flow of a fluid therethrough, comprising a first coupling member having a first coupling internal bore extending between an inner end and an outer end. First coupling threads are defined in the first coupling member proximate the inner end whereas first coupling linking threads are defined by the first coupling internal bore of the first coupling member proximate the outer end. A second coupling member has second coupling threads defined therein. A first attachment member has first attachment linking threads with means for affixing the first hose attachment member to the first hose. The first attachment linking threads are engagable with the first coupling linking threads for securing the first hose to the first coupling means. The first coupling threads are engagable with the second coupling threads for interconnecting the first coupling member and the second coupling member for coupling the first hose thereto.

Abstract: An improved mixing device is disclosed for mixing an abrasive such as sand with a flowing fluid such as compressed air. The improved mixing device comprises a body member having a major internal channel being defined along a major axis. The major internal channel extends between a major input and a major output of the major internal channel. The body member includes a minor internal channel defined along a minor axis and extending from a minor input to an intersection with a portion of the major internal channel located between the major input and the major output of the major internal channel. The flowing fluid is directed into the major input whereas the abrasive is directed into the minor input for enabling the abrasive to mix with the flowing fluid within the major internal channel and to discharge from the major output.