Drive unit for relatively small watercraft

US5336119A · kind A · utility

Assignee

• Schottel-Werft, Josef Becker GmbH & Co. KG · DE

Inventors

• Siegfried Lais · Spay, DE
• Gerd Krautkrämer · Braubach, DE
• Stefan Huth · Solingen, DE
• Stephan Schneider · Amberg, DE

Key dates

• Filing date: Aug 19, 1992
• Grant date: Aug 9, 1994
• Expiry date: Aug 19, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T70/5236
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A drive unit for a relatively small watercraft has a cylindrical underwater partial housing which carries, at one end, an electric motor to be operated photovoltaically, with which a propeller is arranged, at the other end, in such a way that it is seated on a shaft which is rotatably mounted in parallel relationship to the motor output shaft. The propeller shaft is supported in non-lubricated bearings in a partial housing connected to the cylindrical underwater partial housing. A toothed belt drive, having a toothed belt extending from the motor-side open end of the cylindrical underwater partial housing into the cylindrical underwater partial housing, to the motor shaft, is inserted between the motor output shaft and the propeller shaft. The assembled unit is passed, sealingly, through a bearing mounted in the bottom of the boat so that the assembled unit, in its entirety, is mounted fully rotatably around the longitudinal axis of the cylindrical partial housing, in the watercraft, without using a stop to limit rotary movement, such that the assembled unit can be arranged inboard, except for the propeller, the partial housing accommodating the propeller shaft, and the propeller-s…