Abstract: The present invention relates to a condensing heat exchanger and a boiler/water heater including the same and, more particularly, to a condensing heat exchanger, which can increase a contact area between water and a combustion gas having high temperature and improve efficiency by passing a combustion gas, generated from a combustion chamber, through a plurality of exhaust pipes and which can be fabricated in a small and compact size, and a boiler/water heater including the same.

Abstract: The present invention is a combination rolling cart and suitcase that includes a base suitcase, an external support frame, a plurality of steel stabilizers, a plurality of permanent adjustable straps and plurality of attachment points where the attachment points receive and removably couple the permanent adjustable straps to secure one or more suitcases across a top portion of the combination rolling cart and suitcase. The combination rolling cart and suitcase also includes a pair of telescoping handles, a telescoping stem, a releasable handle lock, a plurality of omnidirectional casters and a lid releasably fastened to the base suitcase.

Abstract: A hammock is described that has a concave across the mid portion of its hammock bed, a rigid curved bar extending between opposite sides of the hammock bed, beneath its concave, and a flexible strap extending taut between opposite ends of the rigid curved bar beneath the concave.