Patent ID: 7347029
Filing Date: 2008-03-25
Classification: E04B

Abstract:
1. A concrete form comprising: a. opposing sidewalls formed of cellular insulating material, and b. spacers extending between the sidewalls, each spacer including at least a pair of rigid spacer links, each spacer link including a wall end pivotally linked to a sidewall and an elbow end pivotally linked to another of the spacer links within the spacer, wherein: wherein the sidewalls may be: (1) expanded into spaced relationship wherein the spacer links are oriented at least substantially perpendicular to the sidewalls, or (2) collapsed into closely adjacent relationship wherein the spacer links are oriented at least substantially parallel to the sidewalls, and wherein the spacers, when pivoted into orientations at least substantially perpendicular to the sidewalls, do not fully obstruct the volume defined between the sidewalls, whereby concrete may flow past the spacers between the sidewalls.