Patent ID: 6487923
Filing Date: 2002-12-03
Classification: B63H,F16H,Y10T

Abstract:
A multi-speed boat transmission for a propeller system to transmit a power from a motor to one of a fixed propeller and a water jet, the multi-speed boat transmission comprising:a drive shaft (3) for supplying driving power from a motor to the multi-speed boat transmission; at least two countershafts (5) distributed around a periphery of a main shaft (10) and the driving shaft (3); and at least two stepping-up parts (7, 8, 12); wherein the at least two countershafts (5) and the at least two stepping-up parts (7, 8) have 9 first mountable orientation in which the at least two stepping-up parts (7, 8) generate a first ratio, and the at least two countershafts (5) and the at least two stepping-up parts (7, 8) have a second mountable orientation, which is opposite to the first mountable orientation, in which the at least two stepping-up parts (7, 8) generate a second ratio that is different from the first ratio.