Abstract: An exemplary modular building component disclosed herein includes at least three side walls connected to each other to form a frame structure having an open exterior end and an open interior end, in various aspects. Each of the side walls includes a mating inner structural wall and an outer pivoting wall, in various aspects. The structural wall and the pivoting wall each include a top end and a bottom end, wherein the pivoting wall bottom end is adapted to pivotably engage the structural wall bottom end, in various aspects. A tautened fabric material covers the frame structure exterior end and is secured to each pivoting wall, in various aspects. The fabric is tautened over the frame structure exterior end as each pivoting wall top end is pivoted into abutment with its mating structural wall top end, in various aspects. Related methods are disclosed.

Abstract: An improved roll-up closure utilizing a flexible cover selected from a material suitable to effect the type of closure sought. The cover is at least as wide as the portal to be covered and is typically longer than the portal. Each lateral margin of the cover has a strip of hook or loop fastener material affixed thereto, with the complementary strip affixed to either the respective lateral margin defining the portal or to a "floating" edge of an elongated strip of flexible material attached at its opposite edge to the respective lateral margin. A first end of the cover is rigidly affixed across a first margin of the portal. The opposite end of the cover can be upturned about a transverse rod and connected to a take-up roller mounted adjacent the first margin of the portal, or it can be attached to the rod such that as the cover is raised or lowered, the cover is wound or unwound around the rod. Channel members prevent movement of the rod in a direction normal to the plane of the portal.

Abstract: An improved roll-up closure utilizing a flexible cover or curtain selected from a material suitable to effect the type of closure sought. The cover is at least as wide as the portal to be covered and is typically longer than the portal. Each lateral margin of the cover has a strip of hook and loop fastener material affixed thereto, and a complementary strip is affixed to the lateral margins of the structure defining the portal. A first end of the cover is rigidly affixed across a first margin of the portal. The opposite end of the cover can be upturned and connected to a driven take-up roller mounted to the first margin of the portal. In this embodiment, an elongated transverse rod is supported within the upturned end of the cover. In an alternate embodiment, the opposite end of the cover is attached to an elongated transverse rod such that as the curtain is raised or lowered, the curtain is wound or unwound around the rod, respectively.

Abstract: An improved roll-up closure utilizing a flexible cover or curtain selected from a material suitable to effect the type of closure sought. The cover is at least as wide as the portal to be covered and is typically longer than the portal. Each lateral margin of the cover has a strip of hook and loop fastener material affixed thereto, and a complementary strip is affixed to the lateral margins of the structure defining the portal. A first end of the cover is rigidly affixed across a first margin of the portal. The opposite end of the cover can be upturned and connected to a driven take-up roller mounted to the first margin of the portal. In this embodiment, an elongated transverse rod is supported within the upturned end of the cover. In an alternate embodiment, the opposite end of the cover is attached to an elongated transverse rod such that as the curtain is raised or lowered, the curtain is wound or unwound around the rod, respectively.

Abstract: An improved roll-up closure utilizing a flexible cover or curtain selected from a material suitable to effect the type of closure sought. The cover is at least as wide as the portal to be covered and is typically longer than the portal. Each lateral margin of the cover has a strip of hook and loop fastener material affixed thereto, and a complementary strip is affixed to the lateral margins of the structure defining the portal. A first end of the cover is rigidly affixed across a first margin of the portal. The opposite end of the cover is upturned and connected to a driven take-up roller mounted to the first margin of the portal. An elongated transverse rod is supported within the upturned end of the cover. Activation of the driven roller lengthens or shortens the effective length of the cover and moves the rod therewith. As the driven roller is activated, the mating hook and loop fasteners are positioned to seal and unseal the cover to the lateral margins of the portal.

Abstract: A rollup closure utilizes a flexible cover or curtain selected from a material suitable to effect the type closure sought such as against light, ventilation, noise, sound or moisture. The cover is at least as wide as the opening to be covered and is longer than the opening is high. Each lateral margin of the cover has a strip of closure material affixed thereto, and a complimentary strip is affixed to the inside of a channel member. The top of the curtain is rigidly affixed across the top of the opening. The bottom of the curtain is upturned and connected to a driven take up roller mounted atop the opening. An elongated rod is supported within the upturned end of the curtain with its ends captured within the channels on each side of the opening. A weighting rod is supported atop the elongated rod and separated therefrom by the upturned end of the curtain, with the ends of the weighting rod also captured in the lateral channels.

Abstract: An improved liftable cover for a vehicle such as a light truck. A pair of center pivoted cross members mounted to the lateral sides of the vehicle to support and lift said cover. The improvement is two pairs of slidable hinges each having a block pivotally connected to ends of the cross members. This block is permitted limited horizontal movement along a cylinder rod mounted to the lateral sides of the vehicle. The cross members are U-shaped with an open end that overlies the block providing a low profile cover in the lowered position.

Abstract: A method and apparatus for forming a structure having an inner surface in the form of at least one segment of a sphere. An inner support is mounted at a fixed point from which a radius can be struck to define the inner surface of the structure. An elongated radial member is pivotally connected at one end to the inner support with its other end being movable vertically and horizontally. A forming member at the other end of the elongated member has an outer surface in the shape of the inner surface of the segment to be formed. An actuator moves the elongated member horizontally and vertically to selected positions to place the outer surface of the forming member opposite and adjacent the inner surface of each segment being formed. A forming material is applied to the outer surface of the forming member while it is opposite and adjacent the inner surface of the segment being formed to form each segment directly on the forming member.