Abstract: A measuring device includes a measuring mechanism, a counting mechanism, a variable transmission gear assembly disposed between the measuring mechanism and the counting mechanism, and an adjustment member that engages at the gear assembly for changing the transmission ratio. The gear assembly includes a first shaft and a second shaft which are arranged parallel to one another. First and second out-of-round toothed spur gears are seated on the first shaft. An overrunning clutch is disposed between each one of the first and second spur gears and the first shaft, both overrunning clutches acting in the same direction of rotation. Third and fourth out-of-round spur gears are seated on the second shaft and mesh with the respective first and second spur gears. The third spur gear is rigidly fastened on the second shaft. The fourth spur gear is rotatably mounted on the second shaft.

Abstract: A turbine wheel meter with a meter housing having a lateral opening, with a measuring insert including an impeller, and a flow regulator being inserted in a duct of the meter housing. The measuring devices can, without removing the same from a length of conduit, be installed, exchanged, and calibrated outside of the meter housing by a corresponding structure of the flow regulator in relation to a discontinuity or gap in the duct, by a plug-in and centering arrangement provided on opposed end faces of the measuring device and the flow regulator device, by a flaring portion of the duct in conjunction with a counter shoulder of the flow regulator, as well as by the use of a clamping element.

Abstract: A check and regulator valve, particularly for pipe lines carrying gaseous media, which includes an intake or inlet passage, a valve seat provided with open means for permitting a through flow of a medium, and a rubber-elastic setting member that closes off a compression or pressure chamber. The rubber-elastic setting member is sealingly connected by its edge with the valve seat and is adapted to be applied to the valve seat wholly or in part. The valve seat is constructed as a plate-shaped member and an elastically yielding disk member serves as a setting member. The disk member includes a through flow opening for the media at which is arranged an axially yielding tubular member connected to the input passage with the tubular member passing through the compression or pressure chamber.