Nautitech Pty Ltd.

Nt Consulting International Pty Limited

Graham Charles Mowbray

Richard Terrence Tamba

Stephen Tapper

Paul Donnelly

Ric Tamba

Steve Tapper

Richard Terence Tamba

Mariusz Dudzik

Paul Anthony Donnelly

Dennis Albert Rumble

A two speed transmission system mounted for driving a marine craft comprising: an input shaft coupled in direct connection with a driveshaft of an engine of the marine craft; an output shaft coaxial with the input shaft coupled in direct connection with a driveline of the marine craft; a first gear train for transmitting drive at a fixed first gear ratio; a second gear train for transmitting drive at a fixed second gear ratio; a first friction clutch operable to engage/disengage the first gear train; and a second friction clutch operable to engage/disengage the second gear train, wherein in shifting between the first gear ratio and the second gear ratio one of the friction clutches is disengaged using controlled slippage while the other friction clutch is engaged using controlled slippage.

Dual speed transmission

A two speed transmission including an input shaft; a lay shaft spaced from the input shaft; a first gear train connecting the input shaft to the lay shaft; a second gear train connecting the lay shaft to an output shaft, the gear train including a one way clutch or similar; and a clutch for engaging the input shaft with the output shaft. When the clutch is disengaged, power is transmitted from the input shaft via the gear trains and the lay shaft via the one way clutch to the output shaft which typically provides first or low gear for use in low speed maneuvering or where greater torque is required. With the clutch engaged, power may be transmitted from the input shaft directly to the output shaft to provide a second gear for when the watercraft is cruising.

Single clutch transmission

A decouplerhaving a rotatable input memberfor coupling to a drive unitand a rotatable output memberfor coupling to an output drive, and a gear setfor transmitting drive from the rotatable input memberto the rotatable output member, wherein the decoupleris operable to selectively isolate an input gearof the gear setfrom driving connection with the drive unit, and to selectively engage the input gearinto driving connection with the drive unit. The invention also relates to a method of transmitting torque and to a method of installing the decoupler

Decoupler

Growing community of inventors

NSW, Australia

Graham Charles Mowbray