Patent ID: 7264519
Filing Date: 2007-09-04
Classification: B63H

Abstract:
1. An outboard motor assembly comprising: a mounting bracket for mounting the outboard motor assembly on a watercraft; an internal combustion motor housed in a motor housing; a shaft assembly housed in a shaft housing said shaft assembly comprising a motor coupling, a transmission shaft, a gear assembly, and a drive shaft; an impeller-jet assembly, said impeller-jet assembly comprising: an inlet stator; an external housing attached to said inlet stator; an impeller configured to rotate within said external housing; and an exit stator attached to said external housing; wherein said motor coupling is coupled to said internal combustion motor such that said internal combustion motor causes said transmission shaft to rotate in the desired direction; said gear assembly is mounted between said transmission shaft and said drive shaft such that rotational motion is transferred from the said transmission shaft to said drive shaft; further wherein when said outboard motor assembly is mounted on a watercraft to propel said watercraft, said transmission shaft is oriented in a mostly vertical direction and said drive shaft is oriented in a mostly horizontal direction; further wherein said impeller-jet assembly is coupled to said drive shaft such that the rotation of said drive shaft causes the rotation of said impeller-jet assembly; and further wherein said housing comprises a step-less outer surface.