Abstract: Two embodiments of a roll-up door system, based on deployable shell designs, are disclosed. Each embodiment consists of: an axle providing continuity to the embodiment, a door panel assembly, two mounting and support assemblies, and two door alignment and support tracks. Each embodiment has the following attributes: large lateral load strength to weight ratio, good natural heat flow insulation, weather tightness and, with proper jamb seals, differential pressure boundary capability.

Abstract: One embodiment of a mast-head standing rigging connection device, allowing for sail module rotation about a mast axis, is disclosed. The embodiment allows for connection of shrouds and conventional single mast forestay and backstay rigging systems. Additional embodiments, utilizing modifications of the first embodiment, for multi-mast and triangular fore-aft sail mast roller reef-furl systems, are described.

Abstract: One embodiment of a mast-head standing rigging connection device, allowing for sail module rotation about a mast axis, is disclosed. The embodiment allows for connection of shrouds and conventional single mast forestay and backstay rigging systems. Additional embodiments, utilizing modifications of the first embodiment, for multi-mast and triangular fore-aft sail mast roller reef-furl systems, are described.

Abstract: A flexible unitary sandwich-like panel overhead door (11) consists of two relatively thin elastic sheets (12) and (13) connected by a plurality of elongated parallel web panels (14) which have supporting rollers (16) attached. The sheet-web connections are hinged (15) so that the panel may be flexibly moved from a closed vertical position to an open overhead nearly horizontal configuration. A rectangular beam (17), attached to the elastic sheets, provides additional stability and strength to the door structure. Additional embodiments are described.

Abstract: One embodiment of a deployable reversible camber sail system, based on a deployable shell (58) contained within a mast-sail assembly (11, 12) and supported and controlled by additional assemblies (13-15), is disclosed. The embodiment may be easily and quickly configured into the furled, feathered, port tack and starboard tack sail forms. In addition, this embodiment represents a highly efficient sail module which may be controlled by a single human operator or automated computer-based control system. Additional embodiments, utilizing assemblages of the first embodiment sail system module, are described.

Abstract: One embodiment of a deployable structural system having sandwich-like shell stiffness and strength properties is constructed of an outer elastic sheet and an inner elastic sheet connected by a number of substantially rigid webs wherein hinges constitute the connections. The hinge connection spacing dimensions on the inner and outer elastic sheets differ such that the resulting assemblage may be elastically bent into a compact cylindrical configuration. Deployment is achieved through reversal of the bending process and application of sufficient external restraints such that the deployed configuration is structurally stable. Additional application embodiments are described.

Abstract: A flexible unitary sandwich-like panel overhead door (11) consists of two relatively thin elastic sheets (12) and (13) connected by a plurality of elongated parallel web panels (14) which have supporting rollers (16) attached. The sheet-web connections are hinged (15) so that the panel may be flexibly moved from a closed vertical position to an open overhead nearly horizontal configuration. A rectangular beam (17), attached to the elastic sheets, provides additional stability and strength to the door structure. Additional embodiments are described.

Abstract: One embodiment of a deployable reversible camber sail system, based on a deployable shell (58) contained within a mast-sail assembly (11, 12) and supported and controlled by additional assemblies (13-15), is disclosed. The embodiment may be easily and quickly configured into the furled, feathered, port tack and starboard tack sail forms. In addition, this embodiment represents a highly efficient sail module which may be controlled by a single human operator or automated computer-based control system. Additional embodiments, utilizing assemblages of the first embodiment sail system module, are described.

Abstract: One embodiment of a deployable structural system having sandwich-like shell stiffness and strength properties constructed of an outer elastic sheet (11) and an inner elastic sheet (12) connected by a plurality of parallel elongated substantially rigid webs (13) wherein hinges (14) constitute the connections. The hinge connection spacing dimensions on the inner and outer elastic sheets are differing such that the resulting assemblage may be elastically bent into a compact cylindrical configuration. Deployment is achieved through reversal of the bending process and application of sufficient external supports such that the deployed configuration is statically stable. Additional embodiments are described.