Abstract: The invention is a fluid handling process whereby a submerged pulsating low-pressure gas displacement pump is assisted by an inverted hydrostatic standpipe for the purpose of transporting ambient pressure liquid and gas. An apparatus with no moving parts pumps and transports gas and liquid at near-ambient pressure as a mixed medium by means of subtle design-induced pressure differentials within the inverted hydrostatic standpipe, siphon, pump chamber and riser, enabling conveyance over extended distances and inclined planes.

Abstract: A method of producing a stretchable laminate material by joining an incrementally stretched first sheet material to a second sheet material using a unitary device that both incrementally stretches the first sheet and maintains the deformation through lamination to the second sheet. The width of the first flexible sheet material is maintained through the incremental stretching to result in high efficiency of utilization of the first flexible sheet material in production of the laminate. The invention also provides a method for producing a laminate material by joining two simultaneously, incrementally stretched sheets to another sheet material using a unitary device that both incrementally stretches the two sheets and maintains the deformation of both sheets through lamination to the additional sheet. Also disclosed are the apparatus for producing such laminates.