Patent ID: 8256466
Filing Date: 2012-09-04
Classification: E03F

Abstract:
1. A thermo insulated sewer water treatment environment comprising: ground having a top surface, a sewer water treatment system located in the ground below the top surface of the ground, at least one thermal insulation blanket located on the top surface of the ground above the sewer water treatment system operable to inhibit freezing of the sewer water treatment system, said blanket comprising, first and second sheet members, a core of thermal insulation material located between said first and second sheet members, each of said first and second sheet members and core having outer peripheral side and end portions, at least one U-shaped member located around the side and end portions of the first and second sheet members and core, fasteners securing the U-shaped member to the first and second sheet member and core, a plurality of grommets secured to and extended through the U-shaped member, first and second sheet members and core, and stakes extended into the ground to retain the blanket on the top surface of the ground above the sewer water treatment system, said stakes comprising first members extended into the ground adjacent the blanket, and downward extended hooks secured to the first members engageable with the top of the U-shaped member, said hooks having portions extended through the grommets to retain the blanket on the ground above the sewer water treatment system.