When engaging a driving gear (14) with a driven gear (16) for the purpose of starting an engine (30), a pressing force is applied to the driving gear (14) towards one side in the axial direction from a cam plate (32) which is prevented from rotating, there...

An electric starter motor (ESM) drives a drive shaft (DS) (12). A driven shaft (DNS) (16) with an active link to the DS couples to a pinion shaft (PS) (30). A steep screw thread (18) between the DS and the DNS's driver (15) as well as a forward-feed device...

In a starter (1), a cylindrical tube (7) is slidablly engaged with an outer peripheral surface of an output shaft (4) through a bearing (9) in an axial direction. A front end of the tube (7), which supports a pinion (6), is closed to define an enclosed spa...