Zf Friedrichshafen Ag

Zf Padova Srl.

Adone Bertolo

Fernando Gallato

Andrea Tognon

Daniele Sacchi

A transmission () for a marine outboard propulsion system () which comprises an input shaft () connectable to an engine (), a countershaft () arranged parallel to the input shaft (), several pairs of gears () for transmitting rotation of the input shaft () to the countershaft () and switching elements () for selectively engaging gears () to enable at least two forward gear ratios and one reverse gear ratio. The transmission () comprises an output shaft () which is arranged coaxial to the input shaft () and a PTO countershaft () adapted to drive at least one PTO-aggregate (). The transmission is part of a marine outboard propulsion system.

Transmission for a marine outboard propulsion system

A pivotal boat drive having a transmission unit () which is driven by a drive engine via a connection point (A). The connection point has an input shaft () of a drive device () that is rotatably positioned around a first rotational axis () and an output shaft () that is coupled with the input shaft () and rotatable around a second rotational axis (). The rotational axes () are neither parallel nor concentrically positioned with respect to one another. At least one additional connection point (B, C) is provided at the transmission unit (), at which an additional drive device (), driven by an additional drive engine, can be positioned to drive the output shaft ().

Boat drive comprising auxiliary drives

A sealing arrangement () for a pivotally arranged boat drive in a hull of a boat, the boat drive extends through a hull opening in the bottom of the boat. The boat drive forms, together with the hull of the boat or with a connecting piece () set into the hull of the boat, an annular gap. The annular gap is bridged by at least two flexible sealing elements (), and the at least two sealing elements () enclose at least one ring chamber () between them.

Sealing arrangement for a pivotable boat drive

A connecting piece () that can be set or inserted into the hull of a boat. The connecting piece has an opening () therein for the passage of a pivoted boat drive unit. An outer edge area () of the connecting piece () facilitates fixing and sealing of the connecting piece () relative to the hull of the boat. The connecting piece () comprises a sandwich structure and the sandwich structure generally comprises an inner steel plate () and an outer steel plate () and an elastomer material arranged therebetween.

Connecting piece that can be inserted into a boats hull

A control device, in particular for a boat drive, which comprises a control drive, a reduction gear system () and a control element () that can be pivoted through a steering angle. The reduction gear system comprises a multi-stage toothed gear transmission () with a toothed wheel () on the drive input side, and the control drive comprises two servomotors () which drive the toothed wheel () simultaneously but whose driving action are slightly opposed to one another.

Control device and boat drive comprising a control device

A drive arrangement for an inboard-outboard drive engine of a watercraft, comprising a drive unit () with an upper part () arranged in a hull () of the watercraft and a lower part () which projects through a sealed opening in the hull () into the surrounding water such that a drivetrain extends through the drive unit (). At least one propeller is supported by the lower part () and can be driven by a motor coupled to drive the upper part (). The upper part () is in contact with a carrier system which, by virtue of a plurality of supporting units (A-D), supports reaction forces and torques produced in the drive unit () in the longitudinal, transverse and vertical directions relative to the hull ().

Growing community of inventors

Padua, Italy

Adone Bertolo