A modular, interlocking frame for stretched fabric posters
This patent covers a picture-frame system made from many identical snap-together frame sections that form a stretcher for fabric poster or photo prints. Each section is a one-piece body with built-in connectors on at least two faces and raised rear projections that grip and hold the flexible print; users assemble sections to match a measured poster and then mount the fabric onto the retaining features. Typical users would be photographers, exhibitors, traveling presenters or small-sign shops wanting variable-size stretched fabric displays.
(57) What the patent covered
The main independent claim required a plurality of modular frame sections where each section is a single part with a section body and at least two integrally formed connectors on two or more faces that mechanically link sections together, plus multiple retaining structures (raised projections) on the rear side to engage and hold flexible display material; many sections are substantially identical and interchangeable.
Distinguishing feature: Using identical, single-piece modular sections with integrally formed multi-face connectors and rearward raised projections for holding fabric, so one set of parts can build many frame sizes.
Novelty 3/5. Modular snap-together frames and stretcher bars existed, but this patent focused on single-piece interchangeable sections with connectors on multiple faces and rear projections specifically arranged to retain fabric poster material.
Manufacturing
Likely injection-molded plastic single-piece sections with molded integrally-formed connectors and raised retention bumps; sections may be post-assembled by snapping together, or die-cast or extruded metal with secondary machining; hand assembly to join corners and attach the fabric.
Materials: Injection-moldable plastic (e.g., ABS or polypropylene), extruded or cast aluminum (likely for stiffer frames), low-friction elastomer for retaining projections (possible overmold), adhesive-backed fabric or polyester printable fabric (the poster).
Manufacturability 4/5. Each frame section is a simple single-part mold or extrusion but an assembly of many identical parts is required; tooling for multi-face connector geometry and tolerances matters but no electronics or motors are involved.
Market demand
No demand check has been run for this patent. Likely search terms: modular poster frame snap together, stretch frame for fabric poster, interlocking canvas frame sections. The links in the sidebar open these searches.
Buyers: Photographers, event exhibitors, traveling presenters, small print shops.
Before manufacturing
No related continuation or divisional patents in force were found. Design patents, trademarks and unrelated patents may still cover the product.
Risks include the need for tight tolerances on connectors for rigid, square frames and that the market already has many stretcher and frame options, so selling requires clear advantages; also consider durability of retention projections and load limits for large posters.
About 1.5% of lapsed patents are later revived by their owners. This page is a research lead, not legal advice. Obtain a freedom-to-operate opinion before manufacturing.