Quick changed, self-contained, adjustable vacuum bag system

A quick change, self-contained vacuum system, comprising:

• a movable pressure head configured to receive a fluid under a high pressure and comprising a low pressure inlet, an exhaust port and a guide pin extending away from the pressure head;
• an inner member comprising a bore having a first opening that is in fluid communication with the exhaust port of the pressure head and a second opening that is in fluid communication with the first opening, the inner member being operatively engageable with the guide pin of the pressure head;
• an outer member in slidable relationship with the inner member and the pressure head, the outer member comprising a helical slot dimensioned and configured to receive the guide pin of the pressure head whereby the guide pin may move therewithin and the outer member further comprising an aperture;
• and
• a shutoff valve being operable in response to movement of the guide pin;
• wherein selective movement of the guide pin relative to the outer member in one direction causes movement of the shutoff valve for establishing fluid communication from the exhaust port of the pressure head, through the first and second openings of the inner member and to the aperture of the outer member and movement of the guide pin relative to the outer member in another direction causes movement of the shutoff valve for preventing fluid communication from the exhaust port, through the first and second openings of the inner member and to the aperture.

A quick change, self-contained vacuum system having a debris bag, comprising:

• a movable pressure head configured to receive a fluid under a high pressure and comprising a low pressure inlet, an exhaust port and a guide pin extending away from the pressure head, the pressure head comprises a valve for adjusting a fluid pressure level of the low pressure inlet;
• an inner member comprising a sleeve having a bore including a first opening that is in fluid communication with the exhaust port of the pressure head and a second opening that is in fluid communication with the first opening, the inner member being operatively engageable with the guide pin of the pressure head, the inner member also comprising a mounting portion including radially spaced slots and an outer surface of increasing diameter;
• an outer member comprising a sleeve disposed in concentric relationship with the inner member, the outer member comprising a helical slot dimensioned and configured to receive the guide pin of the pressure head whereby the guide pin may move therewithin and the outer member further comprising an aperture and an end disposed within the input opening of the debris bag, the outer member further comprising an inner tapered surface disposed at an angle with respect to a central axis of the outer member which corresponds to that of the outer surface of the inner member;
• and
• a shutoff valve being operable in response to movement of the guide pin;
• wherein selective movement of the guide pin relative to the outer member in one direction causes movement of the shutoff valve for establishing fluid communication from the exhaust port of the pressure head, through the first and second openings of the inner member and to the aperture of the outer member and movement of the guide pin relative to the outer member in another direction causes movement of the shutoff valve for preventing fluid communication from the exhaust port, through the first and second openings of the inner member and to the aperture of the outer member.