Light transmitter interconnecting a skylight and a ceiling opening

In a building, in combination,

• a roof,
• an end gable at the end of the roof having a skylight opening therethrough,
• a ceiling spaced from said roof and containing a ceiling opening, and
• a light transmitter comprising:
• a base-frame unit comprising a base frame attached to said ceiling at said ceiling opening and containing a light-emitting opening therethrough of a predetermined cross-sectional shape,
• a light duct having upper and lower ends and comprising a tubular member formed from a sheet of flexible material rolled up into a tubular form, the sheet having two ends overlapping by a controlled amount of overlap,
• means for attaching said tubular member to said baseframe unit at the lower end of the light duct, and
• means for attaching said tubular member to said gable at the upper end of said light duct,
• said tubular member having a curvilinear cross-sectional form along most of its length and surrounding a reference line extending between the skylight opening and the light-emitting opening, said tubular member also having generally the form of a truncated cone having its base located at the base-frame unit and its opposite end located near the skylight opening, the diameter of the cone at different points along its length being controlled by the amount of said overlap at said different points.

For connection in a building between a roof containing a skylight opening and a ceiling spaced from the roof, comprising joists, and containing a ceiling opening;

• a light transmitter comprising, in combination,:
• a base-frame unit for attachment to said ceiling at said ceiling opening and containing a light-emitting opening there-through of a predetermined cross-sectional shape,
• a light duct comprising a tubular member formed from one or more sheets of flexible material,
• and means for attaching said tubular member to said baseframe unit at one end of the duct and for attaching said tubular member to said roof at the other end of said duct, with the tubular member having a curvilinear cross-sectional form along most of its length and surrounding a reference line extending between the skylight opening and the light-emitting opening,
• said base-frame unit including a ring surrounding the light-emitting opening in the base-frame unit, and said tubular member extending through the ring and being attached thereto,
• said ring containing slots for receiving the joists of said ceiling, and said light duct containing slots at said one end also for receiving said joists.

In a building, in combination, :

• a roof containing a skylight opening,
• a ceiling spaced from said roof and containing a ceiling opening, and
• a light transmitter comprising:
• a base-frame unit comprising a base frame attached to said ceiling at said ceiling opening and containing a light-emitting opening therethrough of a predetermined cross-sectional shape,
• a light duct having upper and lower ends and comprising a tubular member formed from a sheet of flexible material rolled up into a tubular form, the sheet having two ends overlapping by a controlled amount of overlap,
• means for attaching said tubular member to said base-frame unit at the lower end of the light duct, and
• means for attaching said tubular member to said roof at the upper end of said light duct,
• said tubular member having a curvilinear cross-sectional form along most of its length and surrounding a reference line extending between the skylight opening and the light-emitting opening, said tubular member also having generally the form of a truncated cone having its base located at the base-frame unit and its opposite end located near the skylight opening, the diameter of the cone at different points along its length being controlled by the amount of said overlap at said different points.

For connection in a building between a roof containing a skylight opening and a suspension ceiling spaced from the roof and containing a ceiling opening, a light transmitter comprising the combination of:

• a base-frame unit for support on said ceiling at said ceiling opening and containing a light-emitting opening there-through of a predetermined cross-sectional shape,
• a light duct having two ends and comprising a tubular member of truncated conical form formed from one or more sheets of flexible material,
• said flexible material rolled up into a tubular form, the sheet or sheets having two ends overlapping by a controlled amount of overlap,
• and means for supporting said tubular member on said base frame unit at one end of the duct and for locating said tubular member adjacent said roof at the other end of said duct, with the tubular member having a curvilinear cross-sectional form and a smooth internal surface along most of its length and surrounding a reference line extending between the skylight opening end and the light-emitting opening.

In a building, in combination,:

• a roof containing a skylight opening,
• a ceiling spaced from said roof, comprising joists, and containing a ceiling opening, and
• a light transmitter comprising:
• a base-frame unit comprising a base frame attached to said ceiling at said ceiling opening and containing a light-emitting opening therethrough of a predetermined cross-sectional shape,
• a light duct comprising a tubular member formed from one or more sheets of flexible material and having upper and lower ends,
• means for attaching said tubular member to said base-frame unit at the lower end of the tubular member, and
• means for attaching said tubular member to said roof at the upper end of said tubular member,
• said tubular member having a curvilinear cross-sectional form along most of its length and surrounding a reference line extending between the skylight opening and the light-emitting opening,
• said base-frame unit including a ring surrounding the light-emitting opening in the base-frame unit, and said tubular member extending through the ring and being attached thereto, said ring containing slots for receiving the joists of said ceiling, and said light duct containing slots at said one end also for receiving said joists.