Back to results
US 5,321,901 AGranted
Studs and sockets for studded footwear
AssigneeTrisport Limited
InventorPaul A. Kelly
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTrisport Limited
InventorPaul A. Kelly
Estimating the term…
In a stud and socket combination for studded footwear, a moulded plastics socket (1) provides a threaded axial hole (5) bounded by an inner ring (9). A co-axial outer ring (10) is radially separated from the inner ring to leave an annular space (11). A plastics stud moulding (19) comprises an externally threaded sleeve (21) which can be screwed into the socket hole and a co-axial ring (26) which is spaced radially outwards from the sleeve to slide over the inner socket ring (9) and enter the annular space (11) when the stud and socket are assembled. Four part-cylindrical webs (29) project axially from the ring (26) into the space (11) and provide four axially-extending locking ribs (28) at 90.degree. intervals which project radially outwards from the ring. On the inner surface of the outer ring (10) of the socket are formed four corresponding formations providing recesses (15) to receive the ribs (28). Each recess is bordered on one side by a lead-in ramp (16) and on the other side by a stop block (17). When the stud is screwed into the socket the projections ride over the ramps in turn, offering increasing resistance to rotation successively, until finally the projections engage the stop blocks (17) to prevent further rotation.
A combination of a stud and a socket for studded footwear in which the socket is formed with an internal screw-thread for receiving an externally screw-threaded spigot on the stud and in which the stud and socket have radially facing locking formations operative to come into mutual spigot-stopping engagement only upon the spigot being screwed into the socket to a predetermined axial position in which the stud and socket are fully assembled, the interengaged locking formations preventing the spigot from being screwed any further into the socket and affording resistance to unscrewing, at least one of the locking formations yielding resiliently to permit that unscrewing to occur, one of said locking formations comprising at least one radial projection and the other locking formation comprising at least one recess and stop means arranged to be engaged by the projection immediately beyond the recess so as to impede the stud from being screwed any further into the socket, said other of said locking formations comprising a radially-facing lead-in ramp over which the projection rides before snapping into the recess adjacent to the stop means.
Dependencies are inferred from the claim text.