Modular footwear protuberance assembly

1. A protuberance assembly comprising:

a base comprising

a plurality of spaced apart peripheral rim portions, wherein each of said peripheral rim portions ends with a downwards protruding stopper; and

a screw bore configured to allow screwing of said base to a sole of a footwear, wherein said bore is positioned in an eccentric manner with respect to said protuberance assembly; and

a cap pivot element comprising a plurality of spaced apart internally protruding portions, each of said plurality of internally protruding portions corresponding to one of said plurality of base peripheral rim portions, and

a bore positioned correspondingly to said screw bore of said base, wherein when said cap is placed on said base and rotated, each of said plurality of internally protruding portions arrives under its corresponding peripheral rim portion and is stopped by said downward protruding stopper of said corresponding peripheral rim portion, thereby aligning said base and said cap.

2. The protuberance assembly according to claim 1 , wherein said base also comprises a socket open to a peripheral wall of said base, said socket configured to accommodate a locking fixture configured to lock said alignment of said base and cap.

3. The protuberance assembly according to claim 1 , wherein said locking fixture comprises a locking pin and a spring.

4. The protuberance assembly according to claim 1 , wherein also comprising a fastening fixture configured to fasten said base to a connecting element of an outsole of a footwear.

5. The protuberance assembly according to claim 4 , wherein in said connective element is a track, and wherein said fastening fixture comprises:

a track nut movably disposed in said track; and

a screw configured to be screwed in said nut.

6. The protuberance assembly according to claim 4 , wherein said screw bore is configured to provide several positions for fastening of said base to said track in a selected position by said screw and said track nut.

7. The protuberance assembly according to claim 1 , wherein said bore positioned correspondingly to said screw bore of said base is configured to allow access to said screw through said cap.

8. A method for adjusting a device comprising the protuberance assembly of claim 1 , mounted to a selected position on a bottom surface of a sole, comprising:

unlocking the alignment of said base and cap;

rotating said cap on said base to remove said cap from said base, wherein said base is kept firmly mounted to said selected position in said bottom surface of said sole;

rotating another cap on said base until an alignment of said another cap with said base is achieved; and

locking said alignment of said another cap and said base, thereby adjusting a device comprising the protuberance assembly.

9. The method according to claim 8 , wherein said base also comprises a socket opening to a peripheral wall of said base, said socket configured to accommodate a locking fixture, said locking fixture comprising a locking pin and a spring, and wherein the method also comprises locking said alignment of said base and cap when placed in said socket.

10. The method according to claim 8 , wherein said base also comprises said screw bore positioned in an eccentric manner with respect to said protuberance assembly, said screw bore configured to allow fastening of said base to a sole of a footwear, and

said cap also comprises said bore positioned correspondingly to said screw bore configured to allow access to a screw through said cap.

11. The method according to claim 10 , wherein said sole comprises a track and wherein said protuberance also comprises a fastening fixture comprising:

a track nut movably disposed in said track; and

a screw configured to be screwed in said nut.

12. The method according to claim 11 , wherein said fastening comprises fastening said base to said track in a selected position by said screw and said track nut.