Abstract: A vehicle driving apparatus including, a first shaft provided at a center portion of a rotor and having a first bevel gear projected from an top surface of the rotor, a second bevel gear engaged with the first bevel gear and having an inner peripheral surface fitted to an outer peripheral surface of a second shaft extended in a horizontal direction, and a case having a first case forming a first housing space to accommodate the first shaft and the first bevel gear and a second case forming a second housing space to accommodate the second shaft and the second bevel gear. The second case has an opening at an upper surface thereof for inserting the second bevel gear and a cover to close the opening.

Abstract: A walk-behind working machine includes a motive power source, right and left transmission shafts, and a clutch for transmitting motive power from the source to the shafts. The transmission shafts are disposed in alignment with their respective ends butting against each other. The clutch includes a driving cylindrical member rotationally mounted around the transmission shafts. The transmission shafts have first grooves formed on their outer peripheral surfaces while the cylindrical member has second grooves formed on an inner peripheral surface thereof. The clutch further includes balls disposed between a space defined by the first and second grooves. The first groove is of substantially V-shaped configuration. The first groove has a leading end positioned between the ends of the transmission shafts.

Abstract: A flexible universal gear box for motor vehicles that mounts a pair of yokes movable relative to one another about a pivot member. The yokes are secured to different portions of the motor vehicle. The pivot member can be the main drive shaft of the motor vehicle or the joined wheel axles of the front or rear wheels of the vehicle, as examples. A first shaft member or first and second shaft members pass through the respective bodies of the yokes and join respective bevel gears that in turn are meshed with a pivot bevel gear connected to the pivot member. The movement of one portion of the body of the vehicle relative to the other portion of the body of the vehicle moves one yoke relative to the other yoke and simultaneously causes the rotation of the affected bevel gear around the pivot bevel gear to which it is meshed by way of the simultaneous movement of the affected shaft members.