Abstract: A rotatable coupling for a vacuum cleaner is described. The rotatable coupling includes: an inner conduit having an outer surface; a compressible strip disposed on the outer surface of the inner conduit; an outer conduit adapted to snugly fit over the strip and the first conduit. The rotatable coupling can include a non-reactive high-viscosity lubricant disposed on the outer surface of the inner conduit adjacent the strip. The outer conduit of the coupling can be rotatable about the inner conduit and an interference fit is formed between the inner conduit and the outer conduit.

Abstract: A vacuum cleaner attachment and a method of control of the vacuum cleaner attachment are described. The vacuum cleaner attachment comprises an ultraviolet light source to irradiate and disinfect various cleaning surfaces. Various embodiments of the attachment include one or more safety features concerning activation, enabling, and disabling of the ultraviolet light source based on various parameters such as distance between the attachment and a cleaning surface, time that such a distance is greater than a predetermined time period, and temperature of the ultraviolet light source in order to enable safe and effective operation of the attachment.

Abstract: A rotatable coupling for a vacuum cleaner is described. The rotatable coupling includes: an inner conduit having an outer surface; a compressible strip disposed on the outer surface of the inner conduit; an outer conduit adapted to snugly fit over the strip and the first conduit. The rotatable coupling can include a non-reactive high-viscosity lubricant disposed on the outer surface of the inner conduit adjacent the strip. The outer conduit of the coupling can be rotatable about the inner conduit and an interference fit is formed between the inner conduit and the outer conduit.

Abstract: A steerable vacuum cleaner and a method to steer the vacuum is described. The vacuum cleaner include: a base; a handle having a longitudinal axis and including a conduit; and a rotatable coupling pivotally attached between the base and the handle, with the coupling defining an air channel for providing a flow of air from the base to the conduit in the handle. The base of the vacuum rotates about the longitudinal axis while pushing the vacuum by twisting the handle. The rotatable coupling of the vacuum cleaner includes: an inner conduit having an outer surface; a compressible strip disposed on the outer surface of the inner conduit, wherein the strip is disposed the outer surface of the inner conduit; an outer conduit adapted to snugly fit over the strip and the first conduit; and a non-reactive high-viscosity lubricant disposed on the outer surface of the inner conduit adjacent the strip.

Abstract: A vacuum cleaner attachment and a method of control of the vacuum cleaner attachment are described. The vacuum cleaner attachment comprises an ultraviolet light source to irradiate and disinfect various cleaning surfaces. Various embodiments of the attachment include one or more safety features concerning activation, enabling, and disabling of the ultraviolet light source based on various parameters such as distance between the attachment and a cleaning surface, time that such a distance is greater than a predetermined time period, and temperature of the ultraviolet light source in order to enable safe and effective operation of the attachment.

Abstract: A steerable vacuum cleaner and a method to steer the vacuum is described. The vacuum cleaner include: a base; a handle having a longitudinal axis and including a conduit; and a rotatable coupling pivotally attached between the base and the handle, with the coupling defining an air channel for providing a flow of air from the base to the conduit in the handle. The base of the vacuum rotates about the longitudinal axis while pushing the vacuum by twisting the handle. The rotatable coupling of the vacuum cleaner includes: an inner conduit having an outer surface; a compressible strip disposed on the outer surface of the inner conduit, wherein the strip is disposed the outer surface of the inner conduit; an outer conduit adapted to snugly fit over the strip and the first conduit; and a non-reactive high-viscosity lubricant disposed on the outer surface of the inner conduit adjacent the strip.