Thermal insulating device for concrete mixing trucks

A concrete truck drum insulating system comprising:

• a material layer for covering the drum, comprising a plurality of frustum sections;
• the frustum sections comprised of a plurality of complementary frustum panels;
• a frustum panel including a large arc, a small arc, and a pair of linear edges between the large and small arcs;
• and,
• the large arcs of a frustum panel of a frustum section connected to the small arcs of the frustum panel of an adjacent frustum section.

The insulating system of claim 16, further comprising:

• a longitudinal flap located adjacent to the seam;
• a flap attachment located adjacent to the seam, removably attachable to the flap;
• and,
• wherein attachment of the flap to the flap attachment covers the seam and fasteners when the fasteners of the first edge are connected to the fasteners of the second edge.

A concrete truck drum insulating system comprising:

• an external layer;
• an internal layer;
• an insulation layer interposed between the internal and external layers;
• a longitudinal seam substantially coplanar with the azimuthal axis of the concrete drum, the seam having a first edge and complementary second edge;
• a plurality of connectable fasteners disposed along the first edge and the second edge;
• a longitudinal flap attached to the external layer;
• and,
• a flap attachment for securing the flap over the seam and fasteners when the fasteners of the first edge are connected to the fasteners of the second edge.

A concrete truck drum insulating system comprising:

• a material layer for covering the drum, having a longitudinal seam substantially coplanar with the azimuthal axis of the concrete drum;
• the seam having a first edge and complementary second edge;
• a plurality of connectable fasteners disposed along the first edge and the second edge;
• a longitudinal flap attached to the material layer;
• and,
• a flap attachment for securing the flap over the seam and fasteners when the fasteners of the first edge are connected to the fasteners of the second edge.