Boat propeller transmission
AssigneeAB Volvo Penta
InventorsStaffan Mansson, Oddbjorn Hallenstvedt
Life of this patent
Estimating the term…
Abstract
Boat propeller transmission with a horizontal input shaft, a bevel gear set, a vertical intermediate shaft, an additional bevel gear set, and at least one horizontal propeller shaft. Between the bevel gear sets, a two-speed planetary gear set is engaged, to provide two gear speeds in the same direction between the input shaft and the propeller shaft. A control unit controls the shifting between the low and high gear speed. A sensor senses the position of a gear selector. When the gear selector is in the reverse position, the control unit locks the planetary gear set in the high speed position, regardless of the engine speed.
Claims6
Boat propeller transmission, comprising:
- an input shaft intended to be connected to an output shaft from a drive installation;
- a reversing mechanism driven by said input shaft for reversing the rotational direction of a propeller shaft relative to the rotational direction of the input shaft;
- and
- a gear set providing at least two different gear speeds in the same direction between the input shaft and the propeller shaft,
- wherein the gear set is coupled to a control unit, which is connected to a sensor, which senses the position of a gear selector, and that the control unit is disposed, in the reverse position of the gear selector, to lock the gear set in a high gear position, regardless of the rpm of the input shaft.
Dependencies are inferred from the claim text.