Abstract: So that a device for use at beer gardens, wine gardens, parties, celebrations, or similar is gladly used by guests, is easily erected, and is stable, the tabletop element (1), the seat elements, and the roof element (8) are at least partially connected via a rod system with one another, and the rod system includes support elements that are positioned at least outside the outer circumference limit (14) of the tabletop element (1).

Abstract: A dual diaphragm pump includes a central housing having a pair of opposed housing surfaces, each surface having a housing diaphragm recess and a pair of housing valve recesses, and a pair of covers, each cover having a surface with a cover diaphragm recess and a pair of cover valve recesses. The covers are mated to the housing so that the diaphragm recesses form a pair of pumping chambers with diaphragms therein, and the valve recesses form valve chambers with check valves therein.

Abstract: So that a device for use at beer gardens, wine gardens, parties, celebrations, or similar is gladly used by guests, is easily erected, and is stable, the tabletop element (1), the seat elements (2.1, 2.2, 2.3, 2.4, 2.5, 2.6), and the roof element (8) are at least partially connected via a rod system (2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 7.1, 7.2, 7.3, 7.4, 7.5, 7.6, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 10, 11.1, 11.2, 11.3, 11.4, 11.5, 11.6, 12.1, 12.2, 12.3, 12.4, 12.5, 12.6, 13, 14) with one another, and the rod system includes support elements (5.1, 5.2, 5.3, 5.4, 5.5, 5.6) that are positioned at least outside the outer circumference limit (14) of the tabletop element (1).