Patent ID: 6163995
Filing Date: 2000-12-26
Classification: B44D

Abstract:
An expandable artists' frame for supporting a canvas laid perimetrically thereon, the frame comprising:a plurality of frame sides and a plurality of frame corners, the frame sides being connected together at their ends by joints to form one of said frame corners;each frame side having an external side surface for fixing the canvas thereto, and an opposite internal side surface;a strip-like spring member disposed at each frame corner;said spring member elastically biasing apart two adjacent frame sides;each spring member having a spring front side and a spring back side, a spring bod y which in a rest state is substantially rectilinear, and toothed ends bent towards the spring back side a t an angle alpha;said toothed ends being structured and arranged to directly engage the internal side surfaces of two adjacent frame sides under a preloading action resulting from applying a respective spring member in a respective frame corner.