Abstract: A liquid media metering device of the type having a plunger body acting in a chamber between an inlet and an outlet and having a conical closing part to close the outlet and a piston part at its other end. A clearance between the piston part and the chamber allows liquid to flow past the piston. A sealing ring is applied with a light force against a cylindrical surface opposing the conical part surface such that in an uninfluenced condition and by means of friction it is retained in a given position in relation to the cylindrical surface.

Abstract: A synchronized mechanical-hydrostatic gearbox with infinitely variable drive ratio including a hydrostatic gear and a following mechanical gear coupled thereto. The hydrostatic gear includes a hydraulic transmission motor with variable displacement which is connected to the mechanical gear. The mechanical gear is made with at least two gear ratio stages and with means adapted for altering the displacement of the hydraulic transmission motor on alteration of the gear ratio of the mechanical gear to an extent corresponding to the gear ratio change. The gear box is intended to be incorporated in a transmission for vehicles, particularly terrain vehicles, preferably driven by an internal combustion engine.