Abstract: A modular construction system featuring an improved snap-fit connection element that can be incorporated into a wide variety of construction elements. These construction elements may be made in a range of sizes and used in a variety of fields such as, construction, toys, educational, machinery, products, jigs, two and three dimensional art, and signs. Various shapes disclosed are blocks, beams, radial-hubs, struts, rods, wires, panels, plates, rotators, adaptors, and locks. The preferred connection element comprises of a bendable pair of male ribs containing ridges that snap-fit into a pair of grooves of a mating female connection element. The grooves contain projections at roughly their midpoint and locate into mating indentations in the ridges. This connection element is more exotic than typically used, but can be snap-fit together or taken apart easily in a variety of directions while still allowing it to be molded inexpensively.

Abstract: A modular construction system featuring an improved snap-fit connection element that can be incorporated into a wide variety of construction elements. These construction elements may be made in a range of sizes and used in a variety of fields such as, construction, toys, educational, machinery, products, jigs, two and three dimensional art, and signs. Various shapes disclosed are blocks, beams, radial-hubs, struts, rods, wires, panels, plates, rotators, adaptors, and locks. The preferred connection element comprises of a bendable pair of male ribs containing ridges that snap-fit into a pair of grooves of a mating female connection element. The grooves contain projections at roughly their midpoint and locate into mating indentations in the ridges. This connection element is more exotic than typically used, but can be snap-fit together or taken apart easily in a variety of directions while still allowing it to be molded inexpensively.

Abstract: A pass-over humidifier for delivering a supply of heated, humidified air through an elongated conduit to a mask worn by a patient. The humidifier is designed for wear by a patient during sleep to treat chronic breathing disorders such as allergic rhinitis. A supply of air is drawn into a humidification chamber by a fan and is passed over the surface of a water reservoir where it picks up moisture. The moisture-laden air is mixed with a stream of relatively dry heated air within the humidifier to form a humidified air stream. The humidified air stream is discharged from the humidifier into the elongate conduit at a temperature within the range of approximately 45-57° C. and at a relative humidity within the range of approximately 25-55%. Since the humidified air is preferably heated to a temperature exceeding 45° C., the humidifier is essentially self-sterilizing. The temperature of the humidified air stream drops significantly as it passes tough the conduit between the humidifier and the mask.