Deflectable cleat system for footwear
A sole portion for an item of footwear having a plurality of cleat systems, cleats, or plate structures that dissipate force by deflecting, deforming, displacing or otherwise shifting under selected force, or by facilitating cleat movement around a radial line during ground engagement.
1. A sole portion of a shoe, having a plurality of cleat systems, comprising:
each cleat system having a cleat having a head portion for engaging a ground surface and extending therefrom a post portion that has an end that engages a sole plate in the sole portion;
a concave or convex receptacle portion in the sole plate portion, the cleat post portion including a section having a complementary convex or concave shape that pivotably engages with the concave or convex receptacle portion in response to the shear force; and
one or more elastomeric elements are included in the cleat system that engage with the cleat head portion and/or the post to control the degree of deformation or deflection in response to a lateral shear force and to restore the cleat to its neutral position once the force is removed.
2. The sole portion of claim 1 wherein the elastomeric elements are configured and/or disposed to directionally control the deformation or deflection of the cleat.
3. The sole portion of claim 2 wherein the cleat system is configured to anisotropically allow for deformation or deflection primarily toward one of the lateral or medial sides of the shoe in response to a predetermined magnitude of shear force imposed upon the cleat.
4. The sole portion of claim 1 further comprising a convexity in the sole plate and a concavity in the cleat head portion, the convexity and concavity being pivotably engageable under the shear force.
5. The sole portion of claim 4 wherein the convexity includes a channel through which the cleat portion passes, and which defines a predetermined amount of travel for the cleat post portion.
6. The sole portion of claim 5 wherein at least one elastomeric element is disposed in the channel, the elastomeric element being in operative engagement with the post and convexity to control the degree of deflection of deformation.
7. The sole portion of claim 1 wherein the cleat post is disposed in a channel of the sole plate and the elastomeric element is disposed adjacent the cleat post within the channel so that it operatively engages the cleat post and the sole plate.
8. The sole portion of claim 7 wherein the elastomeric element comprises a ring disposed around the cleat post.
9. The sole plate of claim 1 wherein the receptacle is at least partially disposed in a channel of the sole and the elastomeric element is disposed adjacent the portion of the receptacle that is within the channel so that it operatively engages the receptacle and the sole plate.
10. The sole portion of claim 1 wherein the cleat post is disposed in a channel of the sole plate and the elastomeric element is disposed adjacent the cleat post within the channel so that it operatively engages the cleat post and the sole plate.
11. The sole portion of claim 1 wherein at an operative interface between the cleat head and the sole plate one or both of the cleat head and sole portion at the interface area comprises an elastomeric portion.
12. The sole portion of claim 1 wherein the elastomeric element at the interface comprises an elastomeric base portion of the cleat head.
13. The sole portion of claim 1 wherein the elastomeric element at the interface comprises an elastomeric base portion of the sole plate.
14. An item of footwear, having a cleat system, comprising:
an upper configured to receive a wearer's foot and a sole unit coupled to the upper for engaging the ground, the sole unit having a plurality of cleats protruding from the ground-facing surface of the sole unit, each cleat being in a cleat system, comprising:
the cleat having a head portion and base portion, the cleat being coupled to a post having a first end fixedly or removably anchored to the cleat and a second end fixedly or removably anchored to a plate portion in the sole unit, the cleat being laterally deflectable by (i) pivoting of the second end of the post relative to the plate portion and (ii) by pivoting and/or deformation action by an engagement of the base of the cleat with the ground facing surface of the sole unit; and
wherein one or more elastomeric elements are included in the cleat system that engage with the cleat head portion and/or the post to control the degree of deformation or deflection in response to a lateral shear force and to restore the cleat to its neutral position once the force is removed.
15. The item of footwear of claim 14 wherein the deflectability is facilitated by pivoting of complementary convex and concave surfaces associated with the second end of the post and the plate.
16. The item of footwear of claim 14 wherein the deflectability is facilitated by pivoting of complementary concave and convex surfaces that are associated with the post and a receptacle included in the plate portion.
17. The item of footwear of claim 14 wherein the deflectability is facilitated by pivoting of complementary concave and convex surfaces that are associated with a receptacle included in the plate portion and a sidewall of the plate portion.
18. The item of footwear of claim 14 wherein the deflectability is facilitated by pivoting of complementary convex and concave surfaces associated with the base of the cleat and the ground-facing surface of the sole unit.
19. The item of footwear of claim 15 wherein the deflectability is facilitated by deformation of the base portion of the cleat and/or a mounting portion of the sole unit adjacent the base portion.
20. A method of making a sole plate, comprising:
providing a cleat having a head portion for engaging a ground surface and extending therefrom a post or base portion that has an end that engages a sole plate for a sole portion of a shoe;
a concave or convex receptacle portion being in the sole plate portion, the cleat post or base portion including a section having a complementary convex or concave shape that pivotably engages with the concave or convex receptacle portion in response to the shear force; and
providing one or more elastomeric elements in the cleat system that engage with the cleat head portion and/or the post to control the degree of deformation or deflection in response to a lateral shear force and to restore the cleat to its neutral position once the force is removed.