Patent ID: 6809326
Filing Date: 2004-10-26
Classification: A61L,F24F,Y02A

Abstract:
An ultraviolet light module for the treatment of air within a confined space comprising:(a) an ultraviolet light apparatus comprising an ultraviolet light-emitting lamp that includes at least one composite tubing, said composite tubing comprising: (i) a first section for transmitting ultraviolet light in a wavelength range that includes maximum ozone production and maximum germicidal activity, and (ii) a second section for transmitting ultraviolet light in a wavelength range that includes maximum germicidal activity and excludes the production of ozone; and (iii) an annular sleeve, the annulus of said sleeve (A) completely surrounding a portion of the composite tubing of said lamp; and (B) being capable of blocking ultraviolet light in a wavelength range that produces ozone while simultaneously allowing the transmission of ultraviolet light in a wavelength range that produces germicidal activity; and (b) a drive mechanism for the frictionless displacement of said annular sleeve along the longitudinal axis of said composite tubing for controlling the amount of ozone transmitted by said ultraviolet light apparatus.