An electric shift actuator is provided in an engine cover in which an engine of an upper unit is accommodated, a forward/reverse shift mechanism is provided in a lower unit, and a shift transmission mechanism including a clutch rod is provided to transmit driving force of the electric shift actuator to the forward/reverse shift mechanism by connecting the electric shift actuator with the forward/reverse shift mechanism, in which the clutch rod is disposed vertically in an intermediate unit on the rear side of a drive shaft that transmits driving force of the engine.

A Gear change and gear change biasing mechanism for use in an automatic swimming pool cleaner in slightly off-set paths to cover a mostly square area, a fourth larger turn 46 will steer cleaner to a different area of pool indicated by arrow 47 where the pattern will repeat itself.

An electric shift actuator is provided in an engine cover in which an engine of an upper unit is accommodated, a forward/reverse shift mechanism is provided in a lower unit, and a shift transmission mechanism including a clutch rod is provided to transmit driving force of the electric shift actuator to the forward/reverse shift mechanism by connecting the electric shift actuator with the forward/reverse shift mechanism, in which the clutch rod is disposed vertically in an intermediate unit on the rear side of a drive shaft that transmits driving force of the engine.

A marine drive comprises an internal combustion engine that effectuates rotation of the driveshaft, a propulsor driven into rotation by the driveshaft so as to effect thrust, and a transmission that shifts amongst a forward gear, a reverse gear, and a neutral gear. The marine drive has a gear case housing on the bottom portion and a driveshaft housing around the driveshaft and positioned between the internal combustion engine and the gear case housing. The marine drive has a shift rod rotatable about its own axis, wherein rotation of the shift rod about its own axis shifts the transmission amongst the forward gear, the reverse gear, and the neutral gear. The marine drive also comprises an actuator positioned in the driveshaft housing that effectuates the rotation of the shift drive about its own axis.

A transmission assembly for a self-propelled machine includes a transmission housing fitted with an input shaft and an output shaft, a so-called drive shaft linked to the input shaft by an endless belt transmission and, arranged between the drive shaft and the output shaft, transmission elements including a control mechanism for reversing the rotational drive direction of the output shaft, and a clutch control mechanism, the direction reversing and clutch controls carried by the housing being mounted respectively movable, one between at least three positions: a neutral position, a forward position and a reverse position, the other between at least an engaged position and a disengaged position. The direction reversing control forms, in the neutral position, an element for blocking the clutch control in the disengaged position, and the clutch control forms, in the engaged position, an element for locking the direction reversing control in the forward or reverse position.

A manual transmission includes: a shift selection shaft (20); a shift inner lever (32) including an arm portion (32b) provided on an outer side of a tubular portion (32a) so as to project outwardly in a radial direction; an interlock plate (34) including a projection (34b) provided on an outer side of a boss portion (34a) so as to project outwardly in the radial direction; and a reverse shift arm (41) supported by a transmission case (C) via a bracket (42) in a pivoting manner. The bracket is provided with a regulation portion (46) for regulating inclination of the interlock plate at the time of a shift operation.

A friction drive transmission includes a drive pulley having an engaging face, a tip plate that supports the drive pulley and is configured to pivot about a pivot axis that is parallel to an axis of rotation of the engaging face of the drive pulley, and a friction ring that drives an axle. The friction ring may contact the engaging face of the drive pulley and may be moveable relative to the engaging face of the drive pulley to transition between forward rotation and reverse rotation. When the friction ring moves into a reverse rotation position for reverse rotation of the axle, the tip plate may pivot, with the drive pulley, about the pivot axis from a first position into a second position. The first position may be different from the second position.

A two-speed transmission system for an electric vehicle is disclosed. The system includes a housing, a one-way clutch assembly adapted to be mounted on an input shaft and to be coupled with a first gear drive assembly, a multi-plate friction clutch assembly adapted to be mounted on the input shaft and having a clutch hub disposed in the housing and mounted on the input shaft, a second gear drive assembly freely mounted on the input shaft and having external spline on an outer diameter adapted to be engaged with the clutch hub of the multi-plate friction clutch assembly. The one-way clutch assembly is adapted to rotate to operate the vehicle in the first gear drive when the input shaft is rotated in a drive direction, and the multi-plate friction clutch assembly is in a disengaged state when the vehicle is operated in the first gear drive.

The transmission unit (15) for motor vehicle (1) comprises a shaft (23) of the driving wheel, operatively connected to a main drive (19, 97) to control forward drive, and a reverse drive electric motor (21). The transmission unit further comprises a control bushing (47) rotated by the reverse drive electric motor (21), and a driven transmission bushing (63), operatively connected to the shaft (23) of the driving wheel. An actuator (121) is provided for controlling mutual coupling between the control bushing (47) and the driven transmission bushing (63) to transmit the motion of the reverse drive electric motor (21) to the shaft (23) of the driving wheel.

When a reverse select operation is performed, a pre-balk lever (180) rotates to a rotation position as a control rod (100) rotates. The pre-balk lever (180) has an engagement portion (190), which engages with a tip end portion of a pre-balk pin (162) at the rotation position. As a reverse lever (136) swings while they are engaged with each other, a shift rod (113) moves in such a direction as to activate a synchronizer (60). The engagement portion (190) has a guide surface (192), which guides the tip end portion of the pre-balk pin (162) to the engagement position while the pre-balk lever (180) is rotating toward the rotation position.