The present innovation relates generally to propulsion mechanisms for propeller-driven vehicles and vessels, and, more particularly, to gear-driven transmissions for airboats.

The present innovation relates generally to propulsion mechanisms for propeller-driven vehicles and vessels, and, more particularly, to gear-driven transmissions for airboats.

This application describes clutch mechanisms for use in a steering control system, e.g., a steering control system used to steer a trolling motor for a boat. Such clutch mechanisms can reduce and avoid damage to the steering control system (e.g., a steering motor) when the system is subjected to unusually large impact loads (e.g., when the trolling motor or boat contacts an obstruction). The clutches described in this application can be used to decouple the steering control system from a steering shaft (or other drive mechanism) upon application of a large impact load, thus reducing damage to and increasing the lifespan of such system. In some cases, the clutch is a ball and spring mechanism. In other cases, the clutch is a slip tooth mechanism.

This application describes clutch mechanisms for use in a steering control system, e.g., a steering control system used to steer a trolling motor for a boat. Such clutch mechanisms can reduce and avoid damage to the steering control system (e.g., a steering motor) when the system is subjected to unusually large impact loads (e.g., when the trolling motor or boat contacts an obstruction). The clutches described in this application can be used to decouple the steering control system from a steering shaft (or other drive mechanism) upon application of a large impact load, thus reducing damage to and increasing the lifespan of such system. In some cases, the clutch is a ball and spring mechanism. In other cases, the clutch is a slip tooth mechanism.

A motor comprising: (a) a stator having a plurality of ferrous cores surrounded by a plurality of windings; (b) a pair of rotors positioned on opposing sides of the stator, each rotor including a ring gear; and (c) a drive shaft extending through a cutout of the stator, the drive shaft having a pinion gear positioned near an end of the drive shaft in communication with the ring gears of the rotors; wherein the rotors rotate in opposing directions so that the ring gears translate a movement of the rotors to the drive shaft through the pinion gear to rotate the drive shaft in a direction substantially orthogonal to a direction of rotation of the rotors.

A motor comprising: (a) a stator having a plurality of ferrous cores surrounded by a plurality of windings; (b) a pair of rotors positioned on opposing sides of the stator, each rotor including a ring gear; and (c) a drive shaft extending through a cutout of the stator, the drive shaft having a pinion gear positioned near an end of the drive shaft in communication with the ring gears of the rotors; wherein the rotors rotate in opposing directions so that the ring gears translate a movement of the rotors to the drive shaft through the pinion gear to rotate the drive shaft in a direction substantially orthogonal to a direction of rotation of the rotors.

A bionic underwater robot for achieving a variety of motions is disclosed. The bionic underwater robot includes a head and one or more tail structures. Each of the one or more tail structures includes one or more joint structures. Each of the one or more joint structures includes a connection plate, and a modular assembly, comprising an upper servo motor, a lower servo motor, and a bevel gear mechanism, is motorized for performing various movement motions of the joint structure. The bevel gear mechanism is integrally formed by an intermediate bevel gear, a first bevel gear, and a second bevel gear. The upper servo motor drives the first bevel gear from a first side of the modular assembly, while the lower servo motor drives the second bevel gear from a second side.

A bionic underwater robot for achieving a variety of motions is disclosed. The bionic underwater robot includes a head and one or more tail structures. Each of the one or more tail structures includes one or more joint structures. Each of the one or more joint structures includes a connection plate, and a modular assembly, comprising an upper servo motor, a lower servo motor, and a bevel gear mechanism, is motorized for performing various movement motions of the joint structure. The bevel gear mechanism is integrally formed by an intermediate bevel gear, a first bevel gear, and a second bevel gear. The upper servo motor drives the first bevel gear from a first side of the modular assembly, while the lower servo motor drives the second bevel gear from a second side.

There is provided a ship propulsion machine including: a drive shaft; a drive gear fixed to the drive shaft; a front gear meshed with the drive gear; a rear gear meshed with the drive gear; a rear propeller provided on an inner propeller shaft; a front propeller provided on an outer propeller shaft; a casing having a gear chamber; a second bearing that supports a front end side of the outer propeller shaft at a rear portion of the casing; a third bearing that supports the inner propeller shaft and the outer propeller shaft in a manner rotatable with respect to each other. The third bearing is disposed on an inner peripheral side of a shaft portion of the rear gear, and the second bearing is disposed on an outer peripheral side of the shaft portion of the rear gear.

There is provided a ship propulsion machine including: a drive shaft; a drive gear fixed to the drive shaft; a front gear meshed with the drive gear; a rear gear meshed with the drive gear; a rear propeller provided on an inner propeller shaft; a front propeller provided on an outer propeller shaft; a casing having a gear chamber; a second bearing that supports a front end side of the outer propeller shaft at a rear portion of the casing; a third bearing that supports the inner propeller shaft and the outer propeller shaft in a manner rotatable with respect to each other. The third bearing is disposed on an inner peripheral side of a shaft portion of the rear gear, and the second bearing is disposed on an outer peripheral side of the shaft portion of the rear gear.