METAL CAP FOR SHOELACE TIP AND SHOELACE INCLUDING SAME

Abstract

One aspect of the present invention provides a metal cap for a shoelace tip of a shoelace. The metal cap includes a cylindrical hollow body. The body has a substantially closed first end, an open second end opposite to the first end, and a peripheral wall extending between the first and the second ends. The peripheral wall includes a longitudinal slot extending from the first end to the second end and a plurality of dents aligned longitudinally at locations opposite to the longitudinal slot. The longitudinal slot is defined by a first side edge and a second side edge of the peripheral wall, wherein a protrusion is formed at the first side edge and a notch is formed in the second side edge at a position corresponding to the protrusion. A number of radially inwardly protruding teeth are provided at a periphery of the open second end.

Claims

1. A metal cap for a shoelace, comprising: a substantially hollow cylindrical body having an inner space and a length in a longitudinal direction that is substantially equal to a length of a tip portion of the shoelace, wherein the cylindrical body has a substantially closed first end, an open second end opposite to the first end, and a peripheral wall extending from the first end to the second end; a fastening mechanism configured to allow the peripheral wall of the body to be circumferentially displaced with respect to the tip portion of the shoelace when subjected to a radial compression force so as to permit the inner space of the body to be reduced; a first attaching mechanism provided in the peripheral wall of the body and configured to radially engage with a plastic hoop fit on the tip portion of the shoelace when the inner space of the body is reduced; and a second attaching mechanism configured to bit into the shoelace and abut an end edge of the plastic hoop when the inner space of the body is reduced; wherein the fastening mechanism includes a longitudinal slot in the peripheral wall extending substantially from the first end to the second end of the body and defined by a first side edge and a second side edge of the peripheral wall and having a width between the first and second side edges; and wherein the peripheral wall further has a protrusion circumferentially protruding from the first side edge and a notch circumferentially recessed in the second side edge at a position corresponding to the protrusion.

2. A metal cap for a shoelace according to claim 1, wherein the second attaching mechanism includes a number of teeth radially inwardly protruding from the open second end of the body.

3-4. (canceled)

5. A metal cap for a shoelace according to claim 1, wherein the first attachment mechanism includes a number of dents radially inwardly recessed in the peripheral wall.

6. A metal cap for a shoelace according to claim 5, wherein the dents are formed at longitudinally aligned positions opposite the longitudinal slot.

7. A shoelace, comprising: a woven fabrics shoelace body; two tip portions each formed at one end of the shoelace body and having a length; two plastic hoops each fit and secured to one of the tip portions and has a length substantially equal to the length of the tip portion; and two metal caps according to claim 1 each fit and secured to one of the tip portions by means of the engagement between the first attachment mechanism and the plastic hoop and the abutment/engagement between the second attachment mechanism and the plastic hoop/the shoelace body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a schematic perspective view illustrating a prior art shoelace.

[0014] FIG. 2 is a schematic perspective view illustrating a prior art metal cap for a shoelace tip.

[0015] FIG. 3 is a schematic perspective view showing a metal cap for a tip portion of a shoelace according to an embodiment of a first aspect of the present invention.

[0016] FIG. 4A is a schematic exploded perspective view showing a shoelace according to a second aspect of the present invention.

[0017] FIG. 4B is a schematic assembled perspective view of the shoelace shown in FIG. 4A.

DETAILED DESCRIPTION OF THE INVENTION

[0018] Referring now to FIG. 3 in which a metal cap 10 for a shoelace according to a preferred embodiment of the first aspect of the present invention is illustrated to describe the present invention.

[0019] As shown in FIG. 3, the metal cap 10 for a shoelace includes a substantially hollow cylindrical body 11 having an inner space and a length in a longitudinal direction that is substantially equal to a length of a tip portion of the shoelace. The cylindrical body 11 includes a substantially closed first end 111, an open second end 112 opposite to the first end, and a peripheral wall 113 extending from the first end 111 to the second end 112. The metal cap 10 further includes a fastening mechanism configured to allow the peripheral wall 113 of the body 11 to be circumferentially displaced with respect to the tip portion of the shoelace when subjected to a radial clamping force so as to permit the inner space of the body to be reduced. According to the embodiment shown in FIG. 3, the fastening mechanism includes a longitudinal slot 120 in the peripheral wall 113 extending substantially from the first end 111 to the second end 112 of the body 11 and defined by a first side edge 121 and a second side edge 122 of the peripheral wall 113 and having a width H between the first and second side edges. Preferably, a protrusion 123 circumferentially protrudes from the first side edge 121 and a notch 124 is circumferentially recessed in the second side edge 122 at a position corresponding to the protrusion 123.

[0020] The metal cap 10 for a shoelace further includes a first attaching mechanism provided in the peripheral wall 113 of the body 11 and configured to radially engage with a plastic hoop fit on the tip portion of the shoelace when the inner space of the body is reduced (see FIGS. 4A and 4B). According to the embodiment shown in FIG. 3, the first attachment mechanism includes a number of dents 130 radially inwardly recessed in the peripheral wall 113 of the body 11. Preferably, the dents 130 are formed at longitudinally aligned positions opposite the longitudinal slot 120. In other embodiments, the dents may be formed at positions randomly scattered on the peripheral wall 113.

[0021] Additionally, the metal cap 10 for a shoelace further includes a second attaching mechanism provided at the open second end 112 of the body 11 and configured to radially bit into the shoelace and abut an end edge 47 of a plastic hoop 46 fit on a tip portion 44 of the shoelace (see FIGS. 4A and B) when the inner space of the body 11 is reduced. According to the embodiment shown in FIG. 3, the second attaching mechanism includes four teeth 140 radially inwardly protruding from the open second end 112 of the body 11. Preferably, the second attaching mechanism includes at least three teeth 140 which are circumferentially evenly spaced apart from each other at the second end 112 of the body 11. Although there are four semi-circle shaped teeth 140 shown in the embodiment illustrated in FIG. 3, yet the number and the shape of the teeth 140 are not limited to those illustrated in FIG. 3. For instance, there may be two or more teeth 140 provided at the second end 112 and the shape of the teeth 140 may be substantially triangle shape.

[0022] In use, the metal cap 10 of the present invention may be fit onto a plastic hoop 46 attached to a tip end portion 44 of a shoelace through the open second end 112 and secured to the shoelace by means of using a clamping tool (not shown) to apply a compression force onto the peripheral wall 113 of the body 11 to cause the peripheral wall 113 being circumferentially displaced, the slot 120 being closed and the internal of the body 11 being reduced, and thereby the dents 130 on the peripheral wall 113 engage with the plastic hoop 46 and the teeth 140 bite into the shoelace and abut the end edge 47 of the plastic hoop 46, as shown in FIGS. 4A and 4B.

[0023] A shoelace 40 according to a second aspect of the present invention is illustrated in FIGS. 4A and 4B. As shown, the shoelace 40 includes a shoelace body 42 formed of a woven fabrics; two tip portions 44 each formed at one end of the shoelace body 42 and having a length L; two plastic hoops 46 each fit and secured to one of the tip portions 44 and having a length substantially equal to the length L of the tip portion 44; and two metal caps 10 according to above-mentioned first aspect of the present application each fit and secured to one of the tip portions 44 by means of the engagement between the first attachment mechanism (e.g., the dents 130) and the plastic hoop 46 and the abutment/engagement between the second attachment mechanism (e.g., the teeth 140) and the end edge 47 of plastic hoop 46/the shoelace body 42.

[0024] Because the metal cap 10 of the present invention comprises the unique structural features described above, the metal cap 10 of the present invention can provide a much stronger bonding between the metal cap and the shoelace. Specifically, for a shoelace having traditional metal caps attached to its tip portions, it usually only requires a force approximately 15 kg to detach the traditional metal cap from the shoelace tip portion. For the metal cap 10 of the present invention on the other hand, according to results obtained from the tests performed by the inventor, it takes up to a force of approximately 25 kg to separate metal cap 10 for the shoelace. That is, the metal cap of the present invention can provide at least 60% higher bonding capability than the traditional metal caps can, and this in turn can provide the shoelace a even longer effective service life. Therefore, the metal cap and the shoelace having the metal cap of the present invention are creations that have a great industrial applicability.

[0025] Although the metal cap for a shoelace and the shoelace having the metal cap of present invention have been described above according to the preferred embodiments thereof, it is not intend to limit the scope of the present invention to specific structural features described above. In fact, there exist various modifications and variations under the principle and spirit disclosed above. It will be apparent to people skilled in this art that many modifications can be made to the disclosed structures without departing from the scope of the invention. Therefore, it is the intent of the appended claims to cover all such variations and modifications as come within the sprit and scope of this invention.