Patent ID: 9074336
Filing Date: 2015-07-07
Classification: E02D,E04G

Abstract:
1. A form part comprising insulating foam material shaped with an overhang part and an interior boot shaped cavity having a foot cavity formed opposite said overhang part, said interior boot shaped cavity also having a throat opening that opens said foot cavity to outside said form part, wherein a narrower part of said foot cavity extends from a wider part of said foot cavity to said throat opening, and wherein said form part is formed with open ends, said form part having an outside surface shaped as a u-shaped channel having said interior boot shaped cavity formed within by a channel bottom leg joined to a long channel leg and to said overhang part opposite said long channel leg and shorter than said long channel leg such that said long channel leg and said overhang part are each perpendicular to said bottom leg on said outside surface of said form part with said long channel leg having a uniform thickness and with said overhang part having a non-uniform thickness that is thinnest where said overhang part joins said bottom channel leg and thickest at a top end of said overhang part so as to form an inner wall of said throat opening of said form part, said overhang part formed with a flat top end that is wider than formed at a flat top end of said long channel leg, and wherein said foot cavity has, in a cross section perpendicular to a longitudinal axis of said form part, said wider part of said foot cavity adjacent said channel bottom leg.