Abstract: A beverage dispensing apparatus for enclosing a keg (2) containing a beverage, comprising pumping means (7) for compressing air, and gas transport means (8) for transporting compressed gas from said pumping means (7) to the keg (2) for driving the beverage out of the keg (2) The beverage dispensing apparatus comprises a membrane (10) enveloping a space through which compressed air can pass, whereby oxygen can pass much faster through the membrane (10) than nitrogen can pass through the membrane (10), so that the percentage of oxygen in the gas that is transported to the keg (2) is reduced.

Abstract: The grip (1) according to the invention has a rigid frame (3) for providing a dedicated shape, which allows manufacturing complex three-dimensional shapes. The grip further comprises a flexible skin (5) having an outer surface and being attached to the frame at its periphery, a lid being attached to the frame at its periphery and a chamber being enclosed by the skin and the lid, and substantially filled with a formable material. These features enable an optional design freedom in the shape of the grip. This invention also relates to a method of manufacturing the grip.

Abstract: Gas separation apparatus constructed from a module comprising a bundle of asymmetric hollow fibres of poly(2,6-dimethyl-p-phenylene oxide) having the high molecular weight Mw of 10.sup.5 -5.10.sup.6. The hollow fibres in question produced by coagulation spinning consist of a relatively thick porous layer which offers hardly any resistance to gas permeation and a very dense but thin top layer responsible for the actual favorable gas separation achieved.