Telescopic ventline

An apparatus for venting a confined space comprising:

• an outer tube with a first end upon which a first plurality of connectors is mounted on the exterior thereof and upon which an inside stop is provided on the inside thereof and a second end which is necked down and upon which a second plurality of connectors are mounted;
• and
• an inner tube with a first terminus upon which an outside stop is provided on the outside thereof and a second terminus upon which a third plurality of connectors are mounted on the outside thereof;
• wherein said inner tube is slidably mounted within said outer tube.

An apparatus for venting a confined space comprising:

• a first ventline assembly comprising:
• a first outer tube with a first end upon which a first plurality of connectors is mounted on the exterior thereof and upon which an inside stop is provided on the inside thereof and a second end which is belled and upon which a second plurality of connectors are mounted, and
• a first inner tube with a first terminus upon which an outside stop is provided on the outside thereof and a second terminus which is belled and upon which a third plurality of connectors are mounted on the outside thereof,
• wherein said first inner tube is slidably mounted within said first outer tube;
• and a second ventline assembly comprising:
• a second outer tube with another first end upon which another first plurality of connectors is mounted on the exterior thereof and upon which another inside stop is provided on the inside thereof and another second end which is belled and upon which another second plurality of connectors are mounted, and
• a second inner tube with another first terminus upon which another outside stop is provided on the outside thereof and another second terminus which is belled and upon which a third plurality of connectors are mounted on the outside thereof,
• wherein said second inner tube is slidably mounted within said second outer tube;
• wherein the first end of the second ventline is configured to mate with the second terminus of the first ventline.

An apparatus for venting a confined space comprising a ventline assembly comprising:

• an outer tube having a first inside diameter with a first end upon which an inside stop is provided on the inside thereof and a second end which has a second inside diameter upon which a first connector is mounted;
• an intermediate tube with a first ending upon which an interior stop is provided on the interior thereof and a second ending upon which exterior stop is provided on the exterior thereof;
• an inner tube having a first outside diameter with a first terminus upon which an outside stop is provided on the outside thereof and a second terminus which has a second outside diameter that is less than the second inside diameter and upon which a second connector is mounted on the outside thereof;
• wherein the inner tube is slidably mounted within the intermediate tube, the intermediate tube is slidably mounted between the inner tube and the outer tube and within the outer tube.

An apparatus for venting a confined space comprising:

• an outer tube having a first inside diameter with a first end upon which an inside stop is provided on the inside thereof and a second end which has a second inside diameter and upon which a first connector is mounted;
• and
• an inner tube having a first outside diameter with a first terminus upon which an outside stop is provided on the outside thereof and a second terminus which has a second outside diameter and upon which a second connector is mounted on the outside thereof;
• wherein said inner tube is slidably mounted within said outer tube and said second inside diameter is greater than said second outside diameter.

A method of extending a ventilation system in a tunnel, the method comprising:

• providing a ventilation system, the ventilation system including a first ventline assembly comprising an outer tube with a first end upon which a pair of transport D-rings is mounted on the exterior thereof and upon which an inside stop is provided on the inside thereof and a second end which is belled and upon which a pair of installation D-rings are mounted and an inner tube with a first terminus upon which an outside stop is provided on the outside thereof and a second terminus which is belled and upon which a pair of straps with hooks are mounted on the outside thereof;
• connecting the belled end of the outer tube of the first ventline assembly to a source of fresh air and attaching the outer tube of the first ventline assembly to a structural support in the tunnel;
• releasing the hooks on the outside of the inner tube of the first ventline assembly from the transport D-rings on the first end of the outer tube of the first ventline assembly;
• telescoping said first ventline assembly until the interior stop on the inside of the outer tube of the first ventline assembly and the exterior stop on the outside of the inner tube of the first ventline assembly do or do not abut but remain spaced from one another;
• and
• attaching the inner tube of the first ventline assembly to a structural support in the tunnel.