Patent ID: 7406788

Claim:
Apparatus for mounting on a surface and tensioning rectangular signs having a top edge, a bottom edge, a first vertical edge and a second vertical edge, comprising a top rail and first vertical rail fixedly mountable on said surface and including an elongated recess adapted to removably receive and hold an elongated lock and to prevent the same from rotating, a floating bottom rail and floating second vertical rail also including an elongated recess adapted to removably receive and hold said lock to prevent the same from rotating, elongated flexible but cross sectionally shape retaining inserts about which edges of the sign can be wrapped, wherein said elongated locks are flexibly resilient and adapted to removably receive said inserts with sign edges wrapped thereabout such that the sign edges are firmly secured and the inserts are not rotatable within the locks, mounting means fixedly mountable on said surface outside the bottom edge and second vertical edge of said sign, and tensioning means for releasably securing said floating rails to said mounting means and tensioning the sign vertically and horizontally.