Abstract: A quick seal system is used to seal between an aircraft frame and a transparency, such as a canopy, a windshield, or a window. The system includes a fairing seal and a pressure seal. The fairing seal seals between the outer surface of the canopy and the fairing, while the pressure seal seals between the inner surface of the canopy and the aircraft frame. The pressure seal is an elongated strip of material, having an area of increased thickness to provide an increase sealing pressure. The fairing seal is also an elongated strip of material. The fairing seal is generally triangular, having a top surface, an inner surface, and an outer surface. The inner surface abuts the outer surface of the canopy. A pair of extensions form a longitudinal slot on the outer surface of the fairing seal. The upper edge of the fairing is secured in the slot with an adhesive. If desired, the fairing seal and the adhesive may be electrically conductive.

Abstract: A fastening combination adapted for quickly and efficiently connecting a first structure to a second structure using a single tool (like a screwdriver) and from just one side of the two structures. The fastening combination (which may be called a "blind" fastener) is particularly useful in the aircraft industry for installing a transparency such as a canopy or window to the airframe of some plane. A transparency may be removably connected to the airframe with a plurality of internally threaded members (or sleeves) and mating fastening bolts. The sleeves are loosely mounted in a plurality of fastener housings that can be permanently installed near an edge of the transparency. A means is provided for achieving a mechanical connection between each sleeve and an associated housing in such a way that torque applied by the fastening bolt to the sleeve will be resisted by the housing--and in turn by the transparency (or any other mounting structure to which the housing is anchored).

Abstract: A grit blasting machine which projects particles of metal grit, having at least a soft magnetic property, against a surface to be cleaned to remove scale therefrom. The machine includes a vehicle movable along the surface. A housing mounted on the vehicle has an opening facing the surface through which the grit is projected by a throwing wheel mounted within the housing. The grit is picked up by at least one endless belt formed from non-magnetic, magnetically permeable material. The belt is connected with the vehicle and driven peripherally along a closed path having a pickup region and a release region. A plurality of magnets positioned interiorly of the belt cause the grit to become attached to the belt in the pickup region and to be carried to the release region. As the grit on the belt reaches the release region of the path, the grit is separated from the belt and is collected and recirculated to the throwing wheel.