Marine jet drive
First Claim
1. In an improved marine jet drive for propelling a vessel with a forward and a rearward end, a driving means including an engine, an impeller, a drive shaft coupling the driving means to the impeller, an impeller housing around the impeller, a diffusor housing attached to the impeller housing, a nozzle housing attached to said diffusor housing and an intake duct disposed in front of said impeller housing, the improvement comprising:
- (a) an inner housing, the inner housing disposed inside said diffusor housing and rotatively supporting the impeller;
(b) a rear flexible coupling disposed within the inner housing, the rear flexible coupling flexibly connecting the impeller to the drive shaft; and
(c) a forward flexible coupling, the forward flexible coupling flexibly connecting the driving means to the drive shaft.
6 Assignments
0 Petitions
Accused Products
Abstract
This invention relates to a marine jet drive having improved operation, especially in regard to having efficient adaptation to propulsion engine and hull design; having a drive shaft with flexible coupling at each end, internal to the jet drive; having through-the-nozzle engine exhaust; having simplified, combined means of steering and reversing; having controllable nozzle aperture and trim control; having combination reverse flow deflector and trim plane; having means to disengage the engine from the jet to obtain true neutral; having protection from and removal of debris in the water intake duct; generally having fewer overhauls, easier serviceability and lighter weight.
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Citations
6 Claims
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1. In an improved marine jet drive for propelling a vessel with a forward and a rearward end, a driving means including an engine, an impeller, a drive shaft coupling the driving means to the impeller, an impeller housing around the impeller, a diffusor housing attached to the impeller housing, a nozzle housing attached to said diffusor housing and an intake duct disposed in front of said impeller housing, the improvement comprising:
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(a) an inner housing, the inner housing disposed inside said diffusor housing and rotatively supporting the impeller; (b) a rear flexible coupling disposed within the inner housing, the rear flexible coupling flexibly connecting the impeller to the drive shaft; and (c) a forward flexible coupling, the forward flexible coupling flexibly connecting the driving means to the drive shaft. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification