Angle between two sliding directions of the blue slider is A deg. Angle between sliding directions of the runways is B = (180 – 2.A) deg.
Transmission ratio of linear displacement between the pink slider and the blue one is 1. When the pink slider moves regularly, so does the blue.
It is an embodiment of “Transmission of linear displacement 7a”.
The pin of the pink slider is replaced by a rectangular key that creates an angle A with the sliding direction of the yellow slider.
With other value of B, the transmission ratio differs from 1.
In substance it is a wedge mechanism.