Tractor pump jet

Details Tractor pump jet Tractor pump jet

1998-12-04

1999-10-12

Avila, Stephen

Marine propulsion

Jet drive

440 47, B63H 1100

Patent

active

059646268

ABSTRACT:
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. A drive shaft extending from an upper gear case 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. The upper gear case includes a reverse shifting mechanism that permits the tractor pump jet to operate in either the forward or reverse direction.

REFERENCES:
patent: 2473603 (1949-06-01), Miller
patent: 2965065 (1960-12-01), Tinker
patent: 3112610 (1963-12-01), Jerger
patent: 3153905 (1964-10-01), Campbell
patent: 3249083 (1966-05-01), Irgens
patent: 3389558 (1968-06-01), Hall
patent: 3530673 (1970-09-01), Huber
patent: 3672169 (1972-06-01), Ufer
patent: 3734050 (1973-05-01), Kitai et al.
patent: 3849982 (1974-11-01), Hall
patent: 3906886 (1975-09-01), Elger
patent: 3939794 (1976-02-01), Hull
patent: 4023353 (1977-05-01), Hall
patent: 4281996 (1981-08-01), Mouraret
patent: 4459117 (1984-07-01), Jordan
patent: 5273467 (1993-12-01), Hall
patent: 5325662 (1994-07-01), Varney et al.
patent: 5846103 (1998-12-01), Varney et al.

Affiliated with

Also associated with

Rating

Tractor pump jet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tractor pump jet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tractor pump jet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-646704