Twin jet drive for watercraft

Details Twin jet drive for watercraft Twin jet drive for watercraft

1995-08-11

1998-09-01

Basinger, Sherman

Marine propulsion

Jet drive

440 40, 440 42, B63H 1108, B63H 11113

Patent

active

058002227

ABSTRACT:
A number of embodiments of jet propulsion systems for watercraft that employ twin impellers contained within a common housing assembly at the end of a common inlet duct having a single water inlet opening that can be positioned centrally of the watercraft to avoid drawing air in during abrupt maneuvering. By using twin impellers, the use of straightening vanes can be substantially eliminated. In addition, a small dividing wall extends from the area forwardly of the impellers only into the water inlet ducts sufficiently so as to reduce counter-effects of swirling from between the two impellers and without requiring any substantial change in direction of the water flow from the water inlet opening to the impellers.

REFERENCES:
patent: 3641964 (1972-02-01), Lee
patent: 4086867 (1978-05-01), Stricker et al.
patent: 4276035 (1981-06-01), Kobayashi

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