Tractor pump jet

Details Tractor pump jet Tractor pump jet

B - Operations, Transporting

63

H

B63H 11/08 (2006.01) B63H 1/28 (2006.01) B63H 23/08 (2006.01) F02B 61/04 (2006.01)

Patent

CA 2183835

A marine pump jet includes a rotor located upstream and in front of the rotor drive mechanism. The lower unit of the tractor pump jet has a rotor housing which substantially surrounds the rotor and a stator housing located downstream, of the rotor and rotor housing. The drive shaft extending from the powerhead of an outboard motor enters the stator hub where a pinion gear engages a crown gear attached to the rotor shaft. This places the rotor drive mechanism downstream of the rotor so that the rotor is substantially the first mechanical element that water initially comes into contact with. The inlet opening of the pump jet is larger than the outlet opening at the outlet of the stator housing. Because the rotor operates on essentially undisturbed, non-turbulent water, it is more efficient than traditional pump jets where the rotor is located aft of the drive mechanism. According to an alternative embodiment, a reverse shifting mechanism permits the Tractor Pump Jet to operate in either the forward or reverse direction.

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