Abstract: A piston-combination comprising an elongate chamber bounded by an inner chamber wall, and comprising a piston sealingly movable in the chamber relative to the chamber wall at least between a first and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas at the first and second longitudinal positions, and at least substantially continuously differing cross-sectional areas at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area at said second longitudinal position being smaller than the cross-sectional area at the first longitudinal position, said piston changing dimensions and having different cross-sectional areas thereby adapting to different cross-sectional areas of the chamber during the relative movements of the piston between the first and second longitudinal positions through said intermediate longitudinal positions of the chamber, said combination engaging a rigid surface and bei

Abstract: A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall, and comprising a piston in said chamber to be engagingly movable relative to said chamber wall at least between a first longitudinal position and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas and differing circumferential lengths at the first and second longitudinal positions, and at least substantially continuously different cross-sectional areas and circumferential lengths at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area and circumferential length at said second longitudinal position being smaller than the cross-sectional area and circumferential length at said first longitudinal position, said chamber is comprising an exit valve, which is communicating with a hose, which is communicating with a valve between the other end of said hose and an object to be inflated.

Abstract: A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall, and comprising a piston means in said chamber to be sealingly movable relative to said chamber wall at least between a first and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas at the first and second longitudinal positions, and at least substantially continuously differing cross-sectional areas at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area at said second longitudinal position being smaller than the cross-sectional area at said first longitudinal position, said piston means can change dimensions thereby providing for different cross-sectional areas of the piston means adapting the same to said different cross-sectional areas of the chamber during the relative movements of the piston means between the first and second longitudinal positions through said intermediate longi

Abstract: A piston chamber combination comprising a container type piston, communicating with an enclosed space, said enclosed space having an at least substantially constant volume.

Abstract: A sensor-reader combination for measuring the size of a parameter of a device, the device and reader are postponed at a different physical position from each other. The measuring is done in a measuring space (19, 38, 50, 111, 130) representing said device regarding to the to be measured size of a parameter, said space is positioned nearby said reader.

Abstract: A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall, and comprising a piston means in said chamber to be sealingly movable relative to said chamber wall at least between a first and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas at the first and second longitudinal positions, and at least substantially continuously differing cross-sectional areas at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area at said second longitudinal position being smaller than the cross-sectional area at said first longitudinal position, said piston means can change dimensions thereby providing for different cross-sectional areas of the piston means adapting the same to said different cross-sectional areas of the chamber during the relative movements of the piston means between the first and second longitudinal positions through said intermediate longi