U.S. Patent Specifications Available to Purchase

A multibay internal aeroplane wing liquid storage tank installation comprising, in combination, a wing rib structure dividing the wing spanwise into separate interior spaces adjoining opposite sides of said rib structure, a rigid projection carried by and extending substantially continuously around the entire outer periphery of said rib structure on both sides thereof, collapsible liquid storage tank bag sections of flexible material received conformably within said interior spaces respectively and having open ends with securing edges extending continuously round it adjoining said rib structure and disposed in substantially continuous contact with said rigid projections, reaction means carried fixedly on both sides of said rib structure and extending substantially continuously around the entire periphery thereof located at a substantially uniform short spacing inwardly from said respective projections, and bag‐securing thrust means lodged releasably between said reaction means and bag‐edge contacted projections on both sides of said rib structure retentively holding said bag edges pressed firmly against said respective projections substantially continuously round it to form a liquid tight seal therewith.