https://patentscope.wipo.int/...=&tab=PCT+Biblio
Abstract from the above link:
An article of footwear may include an upper, an outsole, and a spring plate. The spring plate may be located above at least a portion of the outsole and may extend through at least medial forefoot and medial midfoot regions. The spring plate may have an unloaded shape in which a front portion of the spring plate in a forefoot region is downwardly bent relative to a rear portion of the spring plate located rearward of the front portion. The spring plate may comprise an open central region defined by a surrounding band and may be nondestructively removable from and replaceable into the upper. The article may further include at least one inner sole member shaped to rest securely within a void defined at least in part by the upper. The at least one inner sole member may be compressible in at least first and fifth metatarsophalangeal joint regions.
Even if this illegal for IAAF sanctioned running events, this could be really good for recreational running or supplementing ones training if it is found in mid range priced running shoes. Do any of you have any visibility into this. It sounds like you would have good ground feel, but the nice thing is that it's easier on the joints, but with a bit of springy return, it should not have that 'dead' mushy feeling like a lot of max cushioned shoes since there would be some energy storage and return from the shoe in addition to the store and return in your body's chain.
Personally as a person who has been running for 38 years, this sounds really exciting at least for training. I am not so worried about whether they are legal for racing or not.
Abstract from the above link:
An article of footwear may include an upper, an outsole, and a spring plate. The spring plate may be located above at least a portion of the outsole and may extend through at least medial forefoot and medial midfoot regions. The spring plate may have an unloaded shape in which a front portion of the spring plate in a forefoot region is downwardly bent relative to a rear portion of the spring plate located rearward of the front portion. The spring plate may comprise an open central region defined by a surrounding band and may be nondestructively removable from and replaceable into the upper. The article may further include at least one inner sole member shaped to rest securely within a void defined at least in part by the upper. The at least one inner sole member may be compressible in at least first and fifth metatarsophalangeal joint regions.
Even if this illegal for IAAF sanctioned running events, this could be really good for recreational running or supplementing ones training if it is found in mid range priced running shoes. Do any of you have any visibility into this. It sounds like you would have good ground feel, but the nice thing is that it's easier on the joints, but with a bit of springy return, it should not have that 'dead' mushy feeling like a lot of max cushioned shoes since there would be some energy storage and return from the shoe in addition to the store and return in your body's chain.
Personally as a person who has been running for 38 years, this sounds really exciting at least for training. I am not so worried about whether they are legal for racing or not.
