Pulley
AssigneeVan Doorne's Transmissie B.V.
InventorHendrikus F. Lamers
Life of this patent
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Abstract
Pulley, in particular suitable for application in a continuously variable transmission, in which an endless belt can be fitted between the discs of the pulleys, the path of which endless belt can be influenced by a cylinder/piston device. The cylinder/piston device is provided with at least one pressure chamber provided with walls, one of the walls being provided with a resilient hinge, as a result of which elastic expansion of the wall around the hinge is achieved at relatively high pressures in the pressure chamber. Therefore, the shaft, along which at least one of the discs is axially displaceable, is not clamped and deformed to a lesser extent under heavy load, so that the action of the transmission is not impeded.
Claims7
Pulley, suitable for application in a continuously variable transmission, said pulley comprising:
- a set of discs which are fitted on a shaft and between which an endless belt can be fitted, at least one of said discs being axially displaceable and being provided with cylinder/piston means, said cylinder/piston means having at least one pressure chamber provided with radial and concentric cylinder walls, at least one of the walls being sealingly displaceable along a circular surface of one of the cylinder walls, at least one of the radial walls of the pressure chamber being secured by means of a force fit, and being provided with a resilient hinge approximately at the position of said fit.
Dependencies are inferred from the claim text.