Abstract: A portable multiuser sauna includes an enclosure configured as a truncated, regular icosahedron with ten sidewall triangular structural panels and five rooftop triangular structural panels, wherein each sidewall triangular structural panel is compressively coupled to at least two adjacent triangular structural panels.

Abstract: An apparatus and method for recovery of waste heat in a boiler system, wherein heat from the low pressure steam in the feed water tank, which otherwise would be lost through dissipation, is used for other applications. Particularly, the waste heat energy recovered in the form of low pressure steam can be used to heat make-up water for the boiler system.

Abstract: An apparatus and method for recovery of waste heat in a boiler system, wherein heat from the low pressure steam in a feed water tank, which otherwise would be lost through dissipation, is used for other applications. Particularly, waste heat energy recovered in the form of low pressure steam can be used to heat make-up water for the boiler system.

Abstract: The present invention comprises a system for a buoyant material, a cover, and a belt arranged between the cover and the buoyant material. The belt is stitched to the cover at at least one location. In accordance with further aspects of the invention, the belt is stitched to the cover near a first lateral edge and a second lateral edge. In accordance with other aspects of the invention, the belt passes through the cover and is stitched to the cover near the location where the belt passes through the cover.

Abstract: The present invention comprises a system and method for improved stabilization of multiple layers of flexible foam material in personal flotation devices. The present invention includes front and back covered segments incorporating multiple layers of buoyant material connected together by fabric inserted into one or more slits formed through the layers. The ends of the fabric are preferably sewn together. In an alternative embodiment, the connected multiple layers of buoyant material are secured within the covered segments by affixing them within the covered segments. The present invention provides improved stabilization of multiple layers of flexible foam material when used in personal flotation devices to reduce curling and fanning issues and avoid bulk and weight while providing a cosmetically appealing flotation device.