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US 4,637,802 AGranted
Twin outboard drive for watercraft
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsMichihiro Taguchi, Akihiro Onoue
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AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsMichihiro Taguchi, Akihiro Onoue
Estimating the term…
A twin outboard drive and more particularly to an improved transmission and shifting arrangement for such drives. The drives include forward, neutral and reverse transmissions of the bevel gear type and which provide counter-rotation of the respective associated propellers. One of the transmissions is shifted in one direction to shift from neutral to forward while the other transmission is shifted in the opposite direction to shift from neutral to forward. A pair of remote control shift levers are provided and a motion transmitting means connects the shift levers with the transmissions so that the transmissions are shifted in opposite directions when the shift levers are moved in the same direction. In some embodiments, this is accomplished by a crank and follower mechanism and in other embodiments, it is accomplished by a cam and follower arrangement.
In a twin outboard drive for a watercraft comprising a first marine drive having a first transmission providing a forward, a neutral and a reverse drive ratio, a second marine drive having a second transmission providing a forward, a neutral and a reverse drive ratio, a first shift element movable between a forward, a neutral and a reverse position for operating said first transmission in those respective ratios, a second shift element movable between a forward, a neutral and a reverse position for operating said second transmission in those respective ratios, said first and said second shift elements being movable in like directions with the forward position of said first shift element corresponding to the reverse position of said second shift element and vice versa, a first shift control movable between a forward, a neutral and a reverse position, and a second shift control movable between a forward, a neutral and a reverse position, said first and said second shift controls being movable between their positions in like directions, the improvement comprising motion transmitting means operatively connecting said first shift control with said first shift element and said second shift control with said second shift element, said motion transmitting means being constructed and arranged for providing that the movement of said first and said second shift controls in the same direction from their forward position to their reverse position effect opposite movement of said shift elements.
Dependencies are inferred from the claim text.