A first fastener component (26) is secured to an inner aircraft skin surface (6) by a mounting flange (12) and extends across a discontinuity (8) in the skin (2). A second fastener component (28) is secured to a rib (24) on the inner surface of a resilient blade (22) and extends through the discontinuity (8) into engagement with the first component (26). Inward pressure on the blade (22) urges the components (26, 28) into releasable locked engagement with each other. The components (26, 28) secure the blade (22) in a flattened use position in which it is substantially flush with and sealingly engages the outer skin surface (4). The blade (22) may be removed by inserting a tool under it and exerting a lifting force to disengage the components (26, 28). The blade (22) may be dimensioned to cover the outer ends of adjacent fasteners (14) extending through the skin (2). The blade (22) is preferably conductive to provide a continuous electrical path along the outer skin surface (4) across the discontinuity (8).

Removable seal for discontinuities in aircraft skin

This invention relates to improved aluminous cement/gypsum compositions that contain polymer latex emulsions or compounds to produce self-curing, crack-free, fast-setting, high early strength, high bonding, water resistant, durable, cementitious mixtures for finishing, coating, plastering, stucco, rigid insulation protection, topping, resurfacing, patching, motaring, tile grouting, concrete, and the like. In addition, this invention discloses a method for improving the properties and performance of aluminous cement/gypsum compositions by adding certain types, amounts and/or combinations of polymer latex emulsions or compounds with or without the addition of wet expansion and drying shrinkage inhibitors.

Utilization of latexes with hydraulic cement and gypsum compositions

Improved aluminous cement/gypsum compositions that contain polymer latex emulsions or compounds to produce self-curing, crack-free, fast-setting, high early strength, high bonding, water resistant, durable, cementitious mixtures for finishing, coating, plastering, stucco, rigid insulation protection, topping, resurfacing, patching, mortaring, tile grouting, concrete, and the like. These emulsions may be added with or without the addition of wet expansion and drying shrinkage inhibitors.

Utilization of latexes with aluminous cement and gypsum compositions

Compositions and methods for the deposition of ettringite (3CaOA12O33Ca(SO4)30-32H2O) onto the surfaces of fibers, aggregates, and other fillers The ettringite is produced in situ within an aqueous suspension while in proximity to the fibers, aggregates, or other fillers to form a mineralized composite material comprising ettringite coated fibers, aggregates or other fillers Ettringite treated fibers, aggregates, or other fillers are formed by adding chemical reactants such as calcium oxide and aluminum sulfate, which react together in the presence of water to form ettringite, which then precipitates onto the surface of the fibers or other substrates being treated The ettringite treated fibers, aggregates or other fillers can be added to hydraulically settable materials to improve the chemical and mechanical bond between the fibers or other substrates within the resulting hardened hydraulically settable composite material, particularly a cementitious or concrete material

Compositions and methods for manufacturing ettringite coated fibers and aggregates

Systems and methods are provided for focused remodeling and downsizing the volume of subcutaneous lipid-rich cells, body contouring, and tightening skin tissue, using controlled heating of the targeted areas on the body. Electromagnetic energy heats skin layers or tissues to achieve an aesthetic effect. The electromagnetic energy may be applied via an applicator without touching the skin. A spacer of insulating or dielectric material may be provided between the applicator and the skin.

Methods and systems for skin treatment

Verfahren zur herstellung von alpha-hydrogips und ii-anhydrogips

Composite of gypsum and whisker

Verfahren zur herstellung von gips in form von nadelfoermigem anhydrit ii

This disclosure deals with ettringite whiskers, methods of synthesizing such whiskers and ettringite whisker composites. The ettringite whiskers, having a new crystal form, are 1-2 μm in diameter, 50-100 μm in length and approximately 30-50 of aspect ratio. The ettringite whiskers are especially useful in industry as a high tensile strength reinforcement, they increase self-extinguishability and the productive capacity of making sheets, boards of the like.

Novel ettringite whiskers, production and uses

PURPOSE:To obtain the title gypsum with high dry compressive strength and a uniform crystal form in a high yield by adding a habit modifier and a sol. metal salt for accelerating oxidation and growing crystals to a CaSO3 slurry of a specified concn. obtd. by allowing SOx in exhaust gas to be absorbed in a lime slurry, followed by treatment under restricted conditions. CONSTITUTION:SOx in exhaust gas are allowed to be absorbed in a lime slurry, and the CaSO3 concn. of the slurry is adjusted to below about 10%. To this slurry are added 0.01-1% of a habit modifier such as sodium citrate effective in growth of prismatic crystals and 0.01-1% of a sol. metal salt, esp. NiSO4 or Fe2(SO4)3 for accelerating oxidation and promoting crystal growth. The mixed slurry is then adjusted to pH 3-4, oxidized with air or the like at about 120-150, pref. 120- 130 deg.C and above 2 kg/cm while stirring, rapidly filtered at the hot state, and rapidly dried with hot air at above 90, pref. 120-130 deg.C.

Tanaka Minoru

Papers

Verfahren zur herstellung von alpha-hydrogips und ii-anhydrogips

Composite of gypsum and whisker

Verfahren zur herstellung von gips in form von nadelfoermigem anhydrit ii

Novel ettringite whiskers, production and uses

Production of hexagonal prismatic crystal alphaatype hemihydrate gypsum