Quote: Originally Posted by Craig Payne (Post 355927) Like the recent Ampla , not so recent Gravity Deyer and the older Spira and the failed Briteck (forerunners of the Newtons ) and sort of like the Springblade ; another new spring loaded running shoe is coming up called Enko And now we have this Forward Displacement System patent that was just granted to Nike. Quote: An article of footwear includes an upper, a midsole positioned beneath the upper; and a forward displacement assembly positioned within the midsole. The forward displacement assembly may include a biasing member, an actuator element operably connected to the biasing member, and an extension assembly positioned in a forefoot region of the midsole and operably connected to the actuator element
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Nike patent for ‘Forward Displacement System’ running shoe
