Abstract: A mullion structure for enclosing sun spaces consisting of a system of straight and curved beams for supporting transparent plastic panels. The beams have cross-sectional configurations presenting end flanges which facilitate end-to-end and/or perpendicular attachment and side flanges presenting rabbets for receiving and enclosing the edges of the panels. Elongated spars having longitudinally extending rabbets are formed by joining the curved beams together in end-to-end relationship. The spars are connected to a host structure using a torsion relieving system which is made up of a torsion beam extending perpendicularly from the spar and a load bearing plate attached to the host structure. The spars are laterally flexible so that the panels may be inserted into the rabbets and flexed to assume the shape of the spars after the spares are secured to the host structure. All operations necessary for erecting the structure may be conducted from inside the space being enclosed.

Abstract: A mullion structure for enclosing sun spaces consisting of a system of straight and curved beams for supporting transparent plastic panels. The beams have cross-sectional configurations presenting end flanges which facilitate end-to-end and/or perpendicular attachment and side flanges presenting rabbets for receiving and enclosing the edges of the panels. Elongated spars having longitudinally extending rabbets are formed by joining the curved beams together in end-do-end relationship. The spars are connected to a host structure using a torsion relieving system which is made up of a torsion beam extending perpendicularly from the spar and a load bearing plate attached to the host structure. The spars are laterally flexible so that the panels may be inserted into the rabbets and flexed to assume the shape of the spars after the spares are secured to the host structure. All operations necessary for erecting the structure may be conducted from inside the space being enclosed.

Abstract: A mullion structure for enclosing sun spaces consisting of a system of straight and curved beams for supporting transparent plastic panels. The beams have cross-sectional configurations presenting end flanges which facilitate end-to-end and/or perpendicular attachment and side flanges presenting rabbets for receiving and enclosing the edges of the panels. Elongated spars having longitudinally extending rabbets are formed by joining the curved beams together in end-to-end relationship. The spars are connected to a host structure using a torsion relieving system which is made up of a torsion beam extending perpendicularly from the spar and a load bearing plate attached to the host structure. The spars are laterally flexible so that the panels may be inserted into the rabbets and flexed to assume the shape of the spars after the spares are secured to the host structure. All operations necessary for erecting the structure may be conducted from inside the space being enclosed.

Abstract: A method and apparatus for molding a composite plastic article having a piece of plastic film fused to the outer surface of the plastic article at a location away from the main parting line of the mold in which the plastic article is formed.