Roller control unit for a continuously-variable-ratio transmission
AssigneeTorotrak (Development) Limited
InventorBrian Joseph Dutson
Life of this patent
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Abstract
A roller control unit (2) for a continuously-variable-ratio transmission includes a cylinder (6) having a cylinder wall and an end wall; and a piston (8), within the cylinder (6) and to which the roller assembly (4) is connected for movement therewith, said unit includes an axially extending shroud (10) of variable length extending between the piston (8) and the end wall, thereby to define in combination with the piston (8) and cylinder (6) a chamber (16) for receiving hydraulic fluid, and in which the shroud (10) comprises a telescopic shroud which in a first position of the piston (8) is extended and in a second position of the piston (8) is retracted.
Claims9
A roller control unit for a continuously-variable-ration transmission of the toroidal-race rolling traction type, said roller control unit comprising:
- A cylinder, having a cylinder wall and an end wall;
- A piston, within the cylinder and to which the roller is connected for movement therewith, characterised by an axially extending shroud of variable length extending between the piston and the end wall, thereby to define in combination with the piston and cylinder a chamber for receiving hydraulic fluid, and in which the shroud comprises a telescopic shroud which in a first position of the piston is extended and in a second position of the piston is retracted.
Dependencies are inferred from the claim text.