Transmission

摘要

A transmission comprising a plurality of concentric tori, each tori having means for engaging with an adjacent tori, the engaging means being actuated by the pressure of a pressurised fluid to thereby increase or decrease a gearing of gears attached to the transmission. A method of gearing is also provided.

主权项

1. A transmission comprising a driven shaft having one or more driven gears suitable for driving a driving shaft having a plurality of driving gears, wherein one or more of the driven gears are arranged to engage with one or more of the driving gears to thereby alter a speed or torque of the driving shaft relative to a speed or torque of the driven shaft, wherein the driven shaft is brought into engagement with one or more of the driven gears through the action of a pressurised fluid, and wherein the pressure of the pressurised fluid determines which of the one or more driven gears is engaged with the driven shaft, and wherein each driven gear comprises a corresponding annulus, the plurality of annuli being arranged concentrically, and wherein adjacent annuli are brought into engagement with one another through an increase in the pressure of the pressurised fluid and are brought out of engagement with one another through a reduction in the pressure of the pressurised fluid.