Propulsion means for a boat

Details Propulsion means for a boat Propulsion means for a boat

2005-05-03

2005-05-03

Sotelo, Jesus D. (Department: 3617)

Marine propulsion

Diverse engine means

C440S038000

Reexamination Certificate

active

06887115

ABSTRACT:
A propulsion aggregate for boats of planing type is disclosed. The aggregate (10) comprises at least one inboard engine (5) disposed in a supporting frame (6), at least one first drive shaft (1) having a propeller (3), which shaft (1) extends through the boat hull (11) at the stern section of the boat, at least one rudder (12), and a second drive shaft (2) that extends through the stern section of the boat and drives a water turbine (4). The first drive shaft (1) is in direct connection with the power take-off (7) of the engine (5) via a releasable coupling (8) and said first drive shaft (1) is in operation during forward propulsion above a certain speed only, and the second drive shaft (2) is connected to the power take-off (7′) of the engine (5) and is arranged at a higher level than the propeller (3) and said second drive shaft (2) is in operation at forward propulsion at low speeds and at reverse motion.

REFERENCES:
patent: 1325275 (1919-12-01), Clough
patent: 4461620 (1984-07-01), Brachet
patent: 4568289 (1986-02-01), Heidrich et al.
patent: 5520558 (1996-05-01), Kobayashi
patent: 09142384 (1997-06-01), None
patent: 09142385 (1997-06-01), None

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