Abstract: Method for lubricating and/or cooling a transmission unit, in particular a transmission unit of the type which makes use of a continuously variable transmission (2) with pulleys (5-6) and an endless transmission element (7) provided in between, at least one hydraulic cylinder/piston unit (13) with a pressure chamber (15) which cooperates with the continuously variable transmission (2), and a pressure compensation chamber (23) cooperating with the above-mentioned pressure chamber (15), wherein at least part of the hydraulic medium coming out of the pressure compensation chamber (23) is guided back via a number of parts of the transmission unit (1) to be lubricated and/or cooled, so as to provide for the lubrication and/or cooling of these parts.

Abstract: A transmission, in particular for a motor vehicle, provided with an input shaft which, through a drive-away clutch, drives the primary shaft of an infinitely variable V-belt transmission.The secondary shaft of said V-belt transmission is connected with the output shaft of the transmission, whereby the input shaft and the primary shaft are disposed mutually in parallel but not coaxially, and that the primary shaft is driven by the input shaft through a reduction gear.

Abstract: Apparatus for controlling the transmission ratio of an infinitely variable motor vehicle transmission of the type including a belt and two pulleys each having conical discs which are hydraulically movable toward and away from each other, the apparatus including a hydraulic valve having an axially movable internal pilot slide for supplying and exhausting hydraulic fluid to the movable pulley discs to effect movement thereof, a first device responsive to actual engine speed for urging the slide in a first direction, a second device responsive to desired engine speed for applying an urging force on the slide in a second, opposite direction, and a third device for limiting the resulting urging force on the slide in the second direction, the third means being responsive to the transmission ratio.

Abstract: In a driving belt for use with V-shaped pulleys, including an endless flexible carrier and a plurality of transverse elements abutting against each other in face-to-face contact and assembled on the carrier, said transverse elements being provided with coupling means comprising at least one projection at one face and at least one substantially corresponding coupling recess at the other face, the improvement wherein the thickness of the transverse elements at the location of the coupling means is smaller than the distance between the abutting faces of successive transverse elements.

Abstract: A transmission includes a hydrodynamic transmission, such as a torque convertor or a fluid coupling, connectable to a drive source and driving an infinitely variable V-belt transmission having primary and secondary pulleys each constructed of two conical pulley discs. The drive ratio of the V-belt transmission is controlled by a pressure cylinder which adjusts the axial position of one of the pulley discs, and the hydrodynamic transmission is lockable in a direct drive mode in response to the pressure in the pressure cylinder.