Apparatus and method for lacing

Abstract

A lacing apparatus is provided comprising a lace which maybe threaded through a plurality of apertures defined by at least two portions of an article; a connector for connecting the free ends of the lace to one another, so that when the free ends of the lace are connected to one another, the lace forms a continuous loop; and a mechanical locking device for receiving the lace and releasably locking at least two portions of the lace in proximity to one another when at least a portion of the lace has been threaded through the apertures and the free ends of the lace are connected to one another. Footwear incorporating features of this apparatus, as well as methods of releasably lacing together two or more objects, are also disclosed.

Description

TECHNICAL FIELD

The present invention relates to apparatus and methods for releasably securing two or more objects, or portions thereof, in proximity with one another by employing at least one lace which is threaded through two or more apertures defined by the objects or portions thereof.

BACKGROUND

Articles which each employ a lacing system to releasably secure two or more portions of the article in proximity with one another have long required that the user tie together the free end portions of a lace which has been threaded through a plurality of eyelets in respective portions of the article. In footwear, for example, the lace typically is first threaded through eyelets in respective halves of an upper portion of the footwear, and the halves are synched together by pulling upon the free end portions of the threaded lace. Once the halves have been synched together as desired the user ties together the free end portions of the lace to prevent the upper portion halves from spreading apart, thereby securing the footwear to the foot. While alternative configurations are known which do not employ a threaded lace to releasably secure two or more portions of an article together, footwear and other articles which employ such a lacing system remain popular for many reasons, including their ability to firmly and adjustably secure portions of the subject article together.

Unfortunately, many articles which employ one or more laces for these purposes put the user to the inconvenience of having to tie the free end portions of the threaded lace together to maintain a secure fit during use of the article. Often, the free end portions become untied inadvertently, causing the user inconvenience and creating a potentially hazardous condition should the user step upon one of the free end portions while walking or running. Where time is critical, such as for example during athletic competition, the burden of retying the loose free end portions of a shoe lace can prove to be detrimental. To prevent lace from becoming untied during use, multiple knots often are used to tie together the free end portions, which in turn further complicates the process of untying the free end portions and removing the footwear when desired. Moreover, for those who lack the ability or inclination to tie and untie the free end portions of the lace, footwear which incorporates a lace configuration may not be feasible or appealing.

U.S. Pat. No. 3,296,669 to Elder, Jr. discloses footwear which does not require the user to tie the free ends of a shoelace. While the configuration disclosed there has certain advantages over other types of laced footwear, the lacing system described requires the use of fixed tabs at the free ends of the shoelace to prevent the free ends from being pulled through the eyelets when the shoelace is pulled by the user. Such fixed tabs do not enable the user to adjust the length of the shoelace without causing damage to the structure which retains the lace within the eyelets. The disclosed locking device further requires the user to employ sufficient dexterity to align the lace along a path formed by the locking device and to press the lace in between prongs which define the path in order to secure the lace in place.

Thus, a need still exists for efficient lacing apparatus which does not depend upon the user to tie and/or untie the free end portions of the lace and yet permits the free ends of the lace to be rigidly yet adjustably connected to one another while providing the advantages of a threaded lace for securing footwear to a foot.

SUMMARY OF THE INVENTION

This invention is deemed to satisfy this need in a highly efficient and novel way. In one embodiment, this invention provides lacing apparatus which comprises (a) a lace which may be threaded through a plurality of apertures defined by at least two portions of one or more articles; (b) connecting means (e.g., a clamp) for connecting the free ends of the lace to one another, so that when the free ends of the lace are connected to one another, the lace forms a continuous loop; and (c) mechanical locking means (e.g., a wheel lock-type cord fastener) for receiving the lace and releasably locking at least two portions of the lace in proximity to one another when at least a portion of the lace has been threaded through the apertures and the free ends of the lace are connected to one another. The articles, portions of which define the apertures through which the lace is threaded, may be comprised of a wide variety of objects including virtually anything which may be releasably laced together. Suitable non-limiting examples include bags, blouses, skirts, girdles, footwear, medical support straps, and the like. Footwear is a particularly suitable article, non-limiting examples of which include one or more shoes, boots, sandals, etc. For convenience only, the preferred embodiments of this invention will be illustrated hereinafter as applied to footwear. Preferably, the connecting means is a clamp, and more preferably the clamp comprises two halves of a hollow, open-ended cylinder, each of the two halves being connectable to one another so that, when connected, the halves may form the hollow cylinder, and wherein the clamp further comprises lace retention means (e.g., one or more spiked flanges) for retaining at least a portion of each of the free end portions of the lace within the hollow cylinder. In another preferred embodiment, the clamp further comprises a secondary flange extending radially outwardly from the outer surface of the hollow cylinder for receiving and retaining an unlaced portion of the continuous loop formed by the lace, and one of the halves of the hollow cylinder defines an aperture through which the free ends of the lace may be threaded. In this way, a user may access the free ends of the lace once threaded through the aperture and cut or otherwise remove excess length from the lace to thereby adjust the length of the lace which effectively forms the continuous loop.

Another embodiment of this invention provides footwear which comprises (a) a sole; (b) an upper footwear portion connected to the sole and defining two or more apertures; (c) a lace which may be threaded through the apertures; (d) connecting means for connecting the free ends of the lace together to form a continuous loop; and (e) mechanical locking means for receiving the lace and releasably locking at least two portions of the lace in proximity to one another when at least a portion of the lace has been threaded through the apertures and the free ends of the lace are connected to one another.

In yet another embodiment of this invention, a method of releasably securing two or more objects together is provided. The method comprises (a) threading a lace through (1) mechanical locking means for receiving the lace and releasably locking at least two portions of the lace in proximity to one another and (2) through two or more apertures formed by the objects, (b) connecting together the free ends of the lace to form a continuous loop, (c) pulling upon the threaded lace so as to bring the objects into proximity with one another, and (d) securing the mechanical locking means so as to releasably lock the lace portions in proximity to one another, thereby inhibiting separation of the objects.

These and other embodiments and features of the invention will become still further apparent from the ensuing description, appended claims and accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view in perspective of a shoe which incorporates a preferred lacing apparatus of this invention.

FIG. 2 is a plan view of a component part of the apparatus of FIG. 1.

FIG. 3 is a cross-section of the component part of FIG. 2 taken along line 3,3 in FIG. 2.

FIG. 4 is an elevated view in perspective of the component part of FIG. 2.

FIG. 5 is a top view in perspective of a shoe which incorporates another preferred lacing apparatus of this invention.

FIG. 6 is a plan view of a component part of the apparatus of FIG. 5.

FIG. 7 is a cross-section of the component part of FIG. 6 taken along line 7,7 in FIG. 6.

In each of the above figures, like numerals are used to refer to like or functionally like parts among the several figures.

DETAILED DESCRIPTION OF THE INVENTION

As may now be appreciated, this invention enables portions of one or more articles to be brought into proximity with one another and releasably yet securely retained in such position through the use of lace, all without requiring the tying of free ends and without the inconvenience and potential hazard presented by dangling free ends of a lace. The invention also enables the threaded lace to be secured in place efficiently and durably and into the form of a continuous loop to facilitate the use of the lace.

Referring now to the accompanying drawings, FIGS. 1–4 illustrate a preferred embodiment of this invention. FIG. 1 illustrates one view of apparatus of this invention which has been installed on footwear in the form of a shoe 10, partially broken away. As depicted, shoe 10 is comprised of a sole 12 and an upper footwear portion 14 connected thereto. Upper footwear portion 14 includes two flap portions 11 and 13, which in turn include a plurality of eyelets 16 so that portions 11 and 13 define a plurality of apertures 18 through which a lace 20 has been threaded. Lace 20 has two free ends 22, 22 which, although not required, are proximate to the front end, i.e., the end opposite from the heel (not shown) of shoe 10, and which are connected to one another by connecting means in the form of a plastic clamp 24, thereby placing lace 20 in the form of a continuous loop.

Lace 20 also is threaded through mechanical locking means in the form of a wheel lock-type cord fastener 26, the configuration of which is fully described in U.S. Pat. No. 3,564,670 to Bengtsson. An example of a similarly suitable fastener of this type may be seen in U.S. Pat. No. 5,477,593 to Leick. Leick discloses a locking device for a lace. The locking device includes a body, a circular shaped locking wheel, and a pusher. A cavity within the body receives the wheel and allows the wheel to move longitudinally with respect to the body. The pusher attaches to the wheel and actuates the wheel along the length of the body. As shown in FIGS. 5 and 6 of Leick, each end of a lace are fed through an input aperture and an output aperture so that the lace is located between the locking wheel and an inside wall of the body. The locking of the strands of the laces occurs by a wedging effect via the cooperation of the body and the wheel. Fastener 26 receives the lace and is configured to releasably lock at least two portions of lace 20 in proximity with one another, to thereby secure the lace, and in turn the portions of footwear upper portion 14 through which the lace is threaded, together. A loop segment 28 extends from fastener 26.

With particular reference to FIGS. 2–4 it may be seen that clamp 24 is in the shape of an open-ended hollow cylinder formed from two halves 30 and 32 which are hinged together along respective longitudinal edges so as to pivot relative to one another about a longitudinal axis represented in cross-section on FIG. 3 as pivot point P. Halves 30 and 32 may be clamped together by a snap fit provided by beveled flanges 34 and 36 which extend longitudinally along the respective edges of halves 30 and 32 which are opposite the hinged connection. Clamp 24 further comprises lace retention means in the form of a plurality of spiked flanges 38 which extend from an inner surface 40 of the hollow cylinder formed by halves 30 and 32 into the space S within the hollow cylinder. This particular clamp is especially preferred because it provides the advantage of a streamline connection between the free ends of the lace to prevent hang ups between the clamp and surrounding material during use, and yet it also provides a secure connection between the free ends of the lace. Without being bound by theory, it is thought that the pulling force exerted on the lace and transferred therethrough typically is less inclined to cause this clamp to open inadvertently on account of the linear longitudinal relationship between the lace and the clamp.

FIGS. 5–7 illustrate another preferred embodiment of this invention. This embodiment differs from that illustrated in FIGS. 1–4 in the design and configuration of clamp 24. As depicted in FIGS. 5–7, half 30 of clamp 24 has been modified so that a secondary flange 42 extends out radially from an outer surface 41 of the hollow cylinder formed by halve 30. In addition, half 30 defines an elongate aperture 44 through which free ends 22,22 of lace 20 are visible in FIG. 6. Flange 42 is curved in cross-section to facilitate the retention of loop segment 28 of lace 20, as seen on FIG. 5. In this way, loop segment 28 may be retained to prevent it from dangling to the side of shoe 10, if desired. Alternatively or in addition, free ends 22,22 may be threaded through aperture 44 and cut to adjust the overall length of lace 20 to thereby reduce the size of loop segment 28, reducing the need to retain segment 28 and prevent it from dangling to the side of shoe 10. It will now be appreciated that the secondary flange may take on one of many forms, and such form is no limitation of this invention so long as the secondary flange is capable of retaining the lace to prevent the loop segment from dangling to the side of the shoe.

It will be appreciated by those of ordinary skill in the art that the connecting means of this invention may comprise a wide variety of mechanical devices, including but not limited to snaps, male-to-female twist locks, hook-and-loop type material, and the like. Preferably, the connecting means comprises a clamp, as described with particularity above. Those of ordinary skill in the art will also appreciate that the lace retention means of this invention may be comprised of a wide variety of devices, non-limiting examples of which include snaps, hooks, straps, and the like. However, the lace retention means preferably comprises a secondary flange as described in detail above.

Claims

1. An article of footwear comprising: a. a shoe having a first flap and a second flap, said first and second flaps having a plurality of eyelets extending between a first end and a second end of said flaps;b. a lace comprising a first end and a second end, said lace having a length sufficient to be threaded through said plurality of eyelets starting at said first end and ending at said second end of said flaps; andc. a flange located proximate said second ends of said flaps;wherein when said lace is secured at said second end of said flaps, at least one loop is formed adjacent said first ends of said flaps, andwhen said at least one loop is received by said flange, said at least one loop extends from said first ends of said flaps proximate said second ends of said flaps.

2. The article of footwear of claim 1, further comprising a releasable clamp located proximate said second ends of said flaps, said flange being formed on said releasable clamp.

3. The article of footwear of claim 2, said releasable clamp further comprising: a. respective input apertures that receive said first and said second ends of said lace, andb. respective output apertures through which said first and said second ends of said lace pass, wherein, when at least one of said first and said second ends of said lace are pulled through said respective input and output apertures, said releasable clamp releasably secures said lace inward on the length of said lace from said at least one of said first and said second lace ends.

4. The article of footwear of claim 1, further comprising a locking mechanism adapted to releasably receive said lace so that a portion of said lace forms a loop between said first end and said second end of said lace, said locking mechanism being adapted to allow for the adjustment of the length of said loop.

5. The article of footwear of claim 1, wherein said lace is an elastic material.

6. The article of footwear of claim 2, said releasable clamp further comprising a plurality of gripping surfaces for releasably securing said first and said second ends of said lace.

7. The article of footwear of claim 4, said locking mechanism further comprises a body and a wheel, wherein said wheel is slidably received by said body so as to releasably secure said lace within said body.

8. The article of footwear of claim 3, wherein said respective output apertures are combined to form a single output aperture.

9. The article of footwear of claim 1, wherein said flange is curved.

10. An article of footwear comprising: a. a sole;b. an upper portion connected to said sole and defining a plurality of eyelets;c. a lace comprising a first end and a second end, said lace having a length sufficient to be threaded through said plurality of eyelets starting at a second side of said plurality of said eyelets and ending at said first side of said plurality of said eyelets; andd. a flange located at said first side of said plurality of eyelets proximate a toe portion of said upper portion, said flange defining a recessed portion;wherein when said lace is secured at said first side, at least one loop is formed adjacent said second side of said plurality of eyelets distal from said toe portion, andsaid at least one loop is received by said flange recessed portion.

11. The article of footwear of claim 10, further comprising a releasable clamp located at said first side of said plurality of eyelets, wherein, when at least one of said first and said second ends of said lace are pulled through said releasable clamp, said releasable clamp releasably secures said lace inward on the length of said lace from said at least one of said first and said second ends.

12. The article of footwear of claim 11, where said releasable clamp defines said flange.

13. The article of footwear of claim 10, where said recessed flange portion is concave in shape.

14. The article of footwear of claim 10, further comprising a locking mechanism having: a. a body; andb. a wheel,wherein said wheel is slidably received in said body so as to releasably secure said lace within said body so that a portion of said lace forms said at least one loop between said first end and said second end of said lace, andsaid locking mechanism being adapted to allow for the adjustment of the length of said loop.

15. The article of footwear of claim 10, wherein said lace is an elastic material.

16. The article of footwear of claim 11, said releasable clamp further comprising respective input apertures that receive said first and said second ends of said lace, and respective output apertures through which said first and said second ends of said lace pass.

17. A method of lacing footwear comprising: a. providing a shoe having a first and a second flap, said flaps defining a plurality of eyelets therein extending from a first side to a second side;b. passing a lace through said plurality of eyelets beginning at said second side and ending at said first side so that tightening said lace tends to pull said flaps toward each other, wherein said lace has a first end and an opposite second end;c. providing a flange defining a recess at said first side of said plurality of eyelets;d. forming at least one loop in said lace at said second side of said plurality of eyelets;e. securing said at least one loop around said flange so that said at least one loop extends from said second side of said plurality of eyelets proximate to said first side of said plurality of eyelets.

18. The method of lacing footwear of claim 17, wherein step (b) includes initially threading said first and said second ends of said lace through said second side of said plurality of eyelets which are located furthest from a toe end of said shoe so that said first and second ends of said lace finally thread through said first end of said plurality of eyelets which are proximate said toe end of said shoe so that said at least one loop is located distal from said toe portion of said shoe.

19. The method of lacing footwear of claim 17, step (d) further comprising locking together at least two points along the length of said lace, said at least two points being between said first end and said second end of said lace so that said at least one loop is formed between said at least two points.

20. The method of lacing footwear of claim 19, wherein said step of locking further includes securing together said at least two points along the length of said lace in a cord fastener.

21. The method of lacing footwear of claim 20, further comprising selecting said two points by sliding said cord fastener toward or away from said first and second ends of said lace to respectively increase or decrease the length of said at least one loop.

22. The method of lacing footwear of claim 17, further comprising securing said first end and said second end of said lace in a releasable clamp having a. respective input apertures for receiving said first and said second ends of said lace;b. respective output apertures through which said first and said second ends of said lace are passable; andc. a plurality of gripping surfaces that releasably secure said lace in said releasable clamp.

23. The method of lacing footwear of claim 22, the step of securing said first and said second ends of said lace in said releasable clamp further comprising passing at least one of said first end and said second end of said lace through its respective input and output apertures of said releasable clamp so that a sufficient amount of said lace passes therethrough to define a desired length of said lace.

24. The method of lacing footwear of claim 23, said method further comprising, following the step of securing said first and said second ends of said lace in said releasable clamp, cutting an excess length of lace from said at least one of said first and said second ends of said lace.

25. The method of lacing footwear of claim 22, wherein said flange is formed on an outer surface of said releasable clamp.

26. The method of lacing footwear of claim 17, wherein said recess is bounded by a curved wall.