Patent attributes
A flexible duct system has fittings connecting sections of the flexible duct which are pulled taut between adjacent ones of the fittings. A first fitting has a first end and a second end. The second end is distally disposed from the first end and defines a second terminal end and having a second end profile. A second fitting has a forward end and a rearward end. The forward end preferably faces toward the first fitting, spaced apart from the second end of the first fitting. The forward end defines a third terminal end and a third end profile. The rearward end is distally disposed from the forward end, and defines a fourth terminal end and a fourth end profile. The end profiles preferably each include a tapered surface and a catch shoulder. The tapered surfaces circumferentially extend around a central axis of a respective end profile and face in directions which extend outward of the respective end profile with the tapered surfaces narrowing in the respective outwardly extending direction. The catch shoulders face in respective directions opposed to the outwardly extending directions and are spaced apart from respective outward terminal ends of the respective end profile to define abutments. The fittings are formed to provide Tee fittings, reducer fittings, and end caps, and include support members for securing the fittings in fixed positions. Some fittings have ends with spaced apart multiple end profiles of progressively reduced sizes with cut lines disposed between the multiple end profiles.
