Patent classifications
B63H20/20
Multi-speed transmissions for marine propulsion devices
A transmission for an outboard motor, the transmission having an input shaft with an input gear non-rotatably fixed thereto and rotatable by an engine. A countershaft has a countershaft driven gear and a reverse driving gear non-rotatably fixed thereto, where the countershaft driven gear meshes with the input gear. An output shaft has first and second driven gears non-rotatably fixed thereto. First and second driving gears mesh with the first and second driven gears, a reverse idler gear meshes with the reverse driving gear, and a reverse driven gear meshes with the reverse idler gear. First and second clutches selectively rotate the first and second driving gears with the countershaft in first and second modes at first and second speeds in forward rotation, respectively, and a reverse clutch selectively rotates the output shaft with the reverse driven gear in a reverse mode with reverse rotation.
Device for propelling a navigational seacraft, and navigational seacraft provided with such a device
The present invention concerns an outboard propulsion device for a navigational seacraft comprising a propulsion means (4), at least one engine (1) supplying torque to a drive shaft (20) extending out of the engine and driving a transmission shaft (3) intended to supply torque to the propulsion means, the drive shaft and the propulsion shaft being in a fixed relative orientation, and a transmission means (2) connected at the input to the drive shaft (20) in order to receive the engine torque and transmit it, in the form of modified torque, to the transmission shaft (3) to which it is connected at the output, and the transmission shaft (3) is a double universal joint shaft (30, 31) that extends in an inclined manner between the transmission means (2) and the propulsion means (4).
Device for propelling a navigational seacraft, and navigational seacraft provided with such a device
The present invention concerns an outboard propulsion device for a navigational seacraft comprising a propulsion means (4), at least one engine (1) supplying torque to a drive shaft (20) extending out of the engine and driving a transmission shaft (3) intended to supply torque to the propulsion means, the drive shaft and the propulsion shaft being in a fixed relative orientation, and a transmission means (2) connected at the input to the drive shaft (20) in order to receive the engine torque and transmit it, in the form of modified torque, to the transmission shaft (3) to which it is connected at the output, and the transmission shaft (3) is a double universal joint shaft (30, 31) that extends in an inclined manner between the transmission means (2) and the propulsion means (4).
Systems and methods for absorbing shock with counter-rotating propeller shafts in a marine propulsion device
A system for rotating an inner propeller shaft within a gearcase via a driveshaft. The system includes a stub shaft that extends between forward and aft ends and is rotatable within the gearcase. A forward gear is rotatably coupled to the stub shaft, where the forward gear meshes with the driveshaft and is engageable to become rotatably fixed to the stub shaft such that rotating the driveshaft rotates the stub shaft. A shock absorbing coupler is positioned within the gearcase, where the coupler has forward and aft ends, where the forward end of the coupler is engageable with the aft end of the stub shaft, and where the aft end of the coupler engageable with the inner propeller shaft. The coupler is torsional between the forward and aft ends such that shock is absorbable between the inner propeller shaft and the driveshaft.
Systems and methods for absorbing shock with counter-rotating propeller shafts in a marine propulsion device
A system for rotating an inner propeller shaft within a gearcase via a driveshaft. The system includes a stub shaft that extends between forward and aft ends and is rotatable within the gearcase. A forward gear is rotatably coupled to the stub shaft, where the forward gear meshes with the driveshaft and is engageable to become rotatably fixed to the stub shaft such that rotating the driveshaft rotates the stub shaft. A shock absorbing coupler is positioned within the gearcase, where the coupler has forward and aft ends, where the forward end of the coupler is engageable with the aft end of the stub shaft, and where the aft end of the coupler engageable with the inner propeller shaft. The coupler is torsional between the forward and aft ends such that shock is absorbable between the inner propeller shaft and the driveshaft.
Divided gear wheel for a power transmission system used in a marine engine
The present application relates to power transmission system used in marine engines and in particular to a divided gear wheel (11, 12), for a power transmission system 1,2, used in marine engines, to a power transmission system used in marine engines to a method to operate said power transmission system and to a marine engine comprising a power transmission system.
Divided gear wheel for a power transmission system used in a marine engine
The present application relates to power transmission system used in marine engines and in particular to a divided gear wheel (11, 12), for a power transmission system 1,2, used in marine engines, to a power transmission system used in marine engines to a method to operate said power transmission system and to a marine engine comprising a power transmission system.
Trolling motor for an overboard person
The trolling motor for an overboard person comprises a trolling motor and a wrist worn device. The trolling motor may be a battery-operated propulsion device that is operable to propel and steer a water craft. The wrist worn device may be worn by a person on the water craft. A control unit within the trolling motor may communicate wirelessly with the wrist worn device and may be cognizant of a relative position of the wrist worn device with respect to the water craft. If the person falls overboard, a separation distance between the wrist worn device and the control unit may increase. Upon a determination that the separation distance has exceeded a predetermined distance threshold, the control unit may direct the trolling motor to energize, deenergize, or reverse direction such that the trolling motor may move the water craft closer to the person.
Trolling motor for an overboard person
The trolling motor for an overboard person comprises a trolling motor and a wrist worn device. The trolling motor may be a battery-operated propulsion device that is operable to propel and steer a water craft. The wrist worn device may be worn by a person on the water craft. A control unit within the trolling motor may communicate wirelessly with the wrist worn device and may be cognizant of a relative position of the wrist worn device with respect to the water craft. If the person falls overboard, a separation distance between the wrist worn device and the control unit may increase. Upon a determination that the separation distance has exceeded a predetermined distance threshold, the control unit may direct the trolling motor to energize, deenergize, or reverse direction such that the trolling motor may move the water craft closer to the person.
ELECTRIC POWERED OUTBOARD MOTOR
An electric outboard motor 1 includes an operating part 33 that is switchable between forward and reverse rotation positions; a control device 35 configured to switch, based on the position of the operating part, a drive state of an electric motor 8 between forward, reverse, and neutral states. When the position of the operating part is switched from the forward rotation position to the reverse rotation position (ST1 Yes) while a watercraft is moving (ST2: Yes), the control device causes the drive state to transition from the forward rotation state to the reverse rotation state (ST3) such that, before completion of the transition, the drive state is held to be the neutral state for a predetermined time period (ST4).