3ff2c1cd_Kosuke___Patent_applications__Description
[Patent application number] 20130340563 [Published] 12-26-2013 [Description] 
NEUTRAL POSITION LOCKING APPARATUS AND REAR WHEEL STEERING SYSTEM INCLUDING THE SAME - A rear wheel steering system includes a rack shaft, a neutral position locking apparatus that restricts the movement of the rack shaft in a rack axis direction, and a pin-driving device that drives a restriction pin. The neutral position locking apparatus has the restriction pin and a pin-receiving portion formed in the rack shaft. The restriction pin has a first pin-sidewall portion slanted with respect to a pin axis and a second pin-sidewall portion parallel to the pin axis. The pin-receiving portion has a first shaft-sidewall portion that contacts the first pin-sidewall portion when the position of the rack shaft in the rack axis direction is at a neutral position, and a second shaft-sidewall portion that contacts the second pin-sidewall portion when the position of the rack shaft in the rack axis direction is at a restriction position different from the neutral position.
Kosuke - Patent applications