Shoelace adjustment mechanism

Information

  • Patent Grant
  • 6694643
  • Patent Number
    6,694,643
  • Date Filed
    Monday, April 7, 2003
    21 years ago
  • Date Issued
    Tuesday, February 24, 2004
    20 years ago
  • Inventors
  • Examiners
    • Kavanaugh; Ted
    Agents
    • Rosenberg, Klein & Lee
Abstract
A shoelace adjustment mechanism that provides for fastening shoelaces on shoes in which a shoelace is contiguously routed through a tightening and securing structure consisting of a plurality of shoelace winding sheaves along with the shoelace adjustment mechanism disposed on the left vamp and the right vamp such that the arrangement is capable of the rapid shoelace tensioning and loosening, the shoelace adjustment mechanism of the invention herein thereby affording greater practical value.
Description




BACKGROUND OF THE INVENTION




1) Field of the Invention




The invention herein relates to footwear componentry, specifically a shoelace adjustment mechanism, wherein a shoelace is contiguously routed through a tightening and securing structure consisting of a plurality of shoelace winding sheaves along with the shoelace adjustment mechanism disposed on the left vamp and the right vamp such that the arrangement is capable of rapid shoelace tensioning and loosening, the shoelace adjustment mechanism of the invention herein thereby affording greater practical value.




2) Description of the Prior Art




A conventional shoe typically has a plurality of eyelets disposed in the left and the right vamps through which a shoelace is inserted is an alternating crisscross fashion and then tightened and loosened to provide for wearing the shoe. The interlacing and tying approach of such conventional shoelaces is especially challenging for grade-school children, whose shoelaces often loosen because of poor knotting and insufficient tension, with the situation even more difficult for younger children. In view of such shortcomings and the need to make the tie-on type shoelace more practical, the applicant of the invention herein conducted research and development to further improve its practical value through the invention herein based on numerous years of professional experience gained while engaged in manufacturing. Following extensive testing and refinement, the applicant successfully complete the shoelace adjustment mechanism of the present invention.




SUMMARY OF THE INVENTION




The primary objective of the invention herein is to provide a shoelace adjustment mechanism in which a shoelace is contiguously routed through a tightening and securing structure consisting of a plurality of shoelace winding sheaves along with the shoelace adjustment mechanism disposed on the left vamp and the right vamp such that the arrangement is capable of rapid shoelace tensioning and loosening, thereby affording the shoelace adjustment mechanism of the invention herein greater practical value.











To enable the examination committee a further understanding of the structural features and innovative content as well as the advantages and other particulars of the present invention, the brief description of the drawings below are followed by the detailed description of the invention herein.




BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is an isometric drawing of the invention herein.





FIG. 2

is an isometric drawing of the shoelace winding sheave


13


of the invention herein.





FIG. 3

is an isometric drawing of the bearing block


14


of the invention herein.





FIG. 4

is a cross-sectional drawing of the shoelace winding sheave


13


and the left and right vamps


11


and


12


.





FIG. 5

is a cross-sectional drawing of the shoelace adjustment mechanism


2


of the invention herein and the left vamp


12


.





FIG. 6

is an exploded drawing of the shoelace adjustment mechanism


2


of the invention herein.





FIG. 7

is an isometric drawing of the push button


3


of the invention herein, as viewed from the rear.





FIG. 8

is an isometric drawing of the cover plate


4


of the invention herein, as viewed from the rear.





FIG. 9

is an isometric drawing of the coupling component


5


of the invention herein, as viewed from the rear.





FIG. 10

is an isometric drawing of the spool


6


of the invention herein, as viewed from the rear.





FIG. 11

is an orthographic drawing of an embodiment of the invention herein.











DETAILED DESCRIPTION OF THE INVENTION




Referring to

FIG. 1

,

FIG. 2

,

FIG. 3

,

FIG. 4

, and

FIG. 5

, the invention herein includes a plurality of shoelace winding sheaves


13


disposed on the left vamp


11


and the right vamp


12


of a shoe


1


, with a shoelace


15


of an appropriate length routed tensively between a shoelace adjustment mechanism


2


capable of automatic shoelace tightening or loosening and the plurality of shoelace winding sheaves


13


. Each said shoelace winding sheave


13


is a hollow tubular construct having an axial hole


131


through the center and an annular binding groove


132


formed around the exterior that are mounted in the left vamp


11


or the right vamp


12


and, furthermore, an annular bearing groove


133


formed around the said shoelace winding sheave


13


. There is a bearing block


14


, a hollow tubular component having a load flange


141


along the upper level, interior side, and an annular binding groove


142


around the exterior that is mounted in the right vamp


12


, with the said shoelace adjustment mechanism


2


seated on the load flange


141


at the upper level of the bearing block


14


.




Referring to

FIG. 6

, the said shoelace adjustment mechanism


2


is comprised of a push button


3


, a cover plate


4


, a coupling component


5


, a reel


6


, a lower base


7


, a helical and a coil spring


8


and


9


, and the shoelace


15


, wherein:




The said push button


3


, referring to

FIG. 7

, has an arcuate prominence


31


across the top edge, a bore


32


formed within its tubular body and, furthermore, two holes


33


disposed through the tubular body, and a semicircular lock tab


34


situated on two sides at the bottom edge of the said push button


3


.




The cover plate


4


, referring to

FIG. 8

, has a circular opening


41


through its center; a semicircular notch


42


is reticulated at two extremities of the cover plate


4


inner surface and, furthermore, a plurality of semicircular locating indentations


43


are arrayed at equal intervals along the inner surface of the cover plate


4


.




The coupling component


5


, referring to

FIG. 9

, has a round recess


51


disposed in one end and a square recess


52


in its other end; a lock tab


53


projects from each of the two sides of the said coupling component


5


, a pin


54


is situated on one side of each said lock tab


53


and, furthermore, a beveled surface


55


is formed at the extreme lateral edges of the said lock tabs


53


.




The reel


6


, referring to

FIG. 10

, has a round recess


61


formed inside one end and, furthermore, with a plurality of check blocks


62


protruding inward from its top extent; an annular spooling groove


63


is disposed around the exterior of the said reel


6


and a clasp tab


64


protrudes from one side of the said spooling groove


63


; a circular recess


65


is formed inside one end of the said reel


6


and a hole


60


is fabricated through the center; a retaining tab


67


is situated on the inner lateral extent of the circular recess


65


and a concentric spring


68


of a multi-wound arrangement is contained in the circular recess


65


with its outermost extremity secured onto the restraining tab


67


.




The lower base


7


is discoidal in shape and has a perforation


71


through one side and a spindle shaft


72


projecting from the center of its bottom extent, the said spindle shaft


72


having a rectangular mounting column


73


at the tip, a hole


74


in the center, and a slot imposed along the center.




To enable the said shoelace adjustment mechanism


2


of the invention herein, one extremity of the shoelace


15


is inserted through the perforation


71


of the lower base


7


and attached to the clasp tab


64


at one side of the reel


6


spooling groove


63


, while the opposite extremity of the shoelace


15


is inserted through the holes


33


of the push button


3


and restrained at one side of the push button


3


by means of a clip


151


; the said reel


6


is sleeved onto the lower base


7


spindle shaft


72


, wherein the center extremity of the concentric spring


68


is inserted into the slot of the spindle shaft


72


, the spindle shaft


72


is extended through the round recess


61


of the reel


6


, the coil spring


9


is placed into the hole


74


in the center of the rectangular mounting column


73


at the tip of the spindle shaft


72


and, furthermore, such that the said coil spring


9


protrudes slightly from the mounting column


73


; the square recess


52


in the bottom extent of the coupling component


5


is snug fitted onto the rectangular mounting column


73


at the tip of the spindle shaft


72


and, furthermore, the said lock tabs


53


engage the check blocks


62


at the top extent of the reel


6


; the helical spring


8


is placed within the round recess


51


in the top extent of the coupling component


5


, the bore


32


formed within the push button


3


sleeved onto the top end of the coupling component


5


, and the cover plate


4


and the lower base


7


are conjoined to complete the entire shoelace adjustment mechanism


2


.




Following the assembly of the said structural components, the said shoelace


15


is routed between the plurality of shoelace winding sheaves


13


on the left vamp


11


and the right vamp


12


and the shoelace adjustment mechanism


2


; the said shoelace


15


is of an appropriate routing length according to differences in shoe size, one extremity of the shoelace


15


is attached to the clasp tab


64


at one side of the reel


6


and the opposite extremity of the shoelace


15


is inserted through the holes


33


of the push button


3


and restrained at one side of the push button


3


with a clip


151


; the concentric spring


68


contained in the circular recess


65


is capable of powerfully and automatically revolving the reel


6


, since the lock tab


53


projecting from each of the two sides of the coupling component


5


engage the check blocks


62


protruding inward from its top extent of the reel


6


, when the user depresses the push button


3


of the shoelace adjustment mechanism


2


, the coupling component


5


is shoved down at the same time, causing the disengagement of the lock tabs


53


at the two sides of the coupling component


5


from the reel


6


check blocks


62


and releasing the torque of the concentric spring


68


such that the reel


6


automatically draw in the shoelace


15


, with said shoelace


15


moved in the direction indicated by the arrowheads shown in

FIG. 11

to simultaneously pull the left vamp


11


and the right vamp


12


closer together; to loosen the shoelace


15


, the push button


3


is depressed once again, after which the vamps are spread apart by the slipping out the feet.




The push button


3


of the invention herein can also be partially depressed to disengage the lock tabs


34


situated on two sides at the bottom edge of the said push button


3


from the semicircular locating indentations


43


of the cover plate


4


and then rotated clockwise or counter-clockwise to tighten or loosen a small section of the shoelace


15


and thereby finely vary the degree of overall shoelace tension.




In summation of the foregoing section, since the invention herein improves upon the shortcomings of the conventional product, is an original arrangement among products in the same category, provides even greater practicality, and the disclosed structure is definitely capable of achieving its claimed objectives, the present invention is submitted for review and the granting of the commensurate patent rights.



Claims
  • 1. A shoelace adjustment mechanism, wherein a plurality of shoelace winding sheaves are disposed on the left vamp and the right vamp of a shoe, with a shoelace of an appropriate length routed tensively between the said shoelace adjustment mechanism capable of automatic shoelace tightening or loosening and the said plurality of shoelace winding sheaves; each said shoelace winding sheave is a hollow tubular construct having an axial hole through the center and an annular binding groove formed around the exterior that are mounted in the said left vamp or the said right vamp and, furthermore, an annular bearing groove formed around the said shoelace winding sheave; there is a bearing block, a hollow tubular component having a load flange along the upper level, interior side, and an annular binding groove around the exterior that is mounted in the said right vamp, with the said shoelace adjustment mechanism seated on the said load flange at the upper level of the said bearing block, the features of which include:the said shoelace adjustment mechanism is comprised of a push button, a cover plate, a coupling component, a reel, a lower base, a helical and coil spring, and the said shoelace; the said push button has an arcuate prominence across the top edge, a bore formed within its tubular body and, furthermore, two holes disposed through the tubular body, and a semicircular lock tab situated on two sides at the bottom edge of the said push button; the said cover plate has a circular opening through its center; a semicircular notch is reticulated at two extremities of the cover plate inner surface and, furthermore, a plurality of semicircular locating indentations are arrayed at equal intervals along the inner surface of the said cover plate; the said coupling component has a round recess disposed in one end and a square recess in its other end; a lock tab projects from each of the two sides of the said coupling component, a pin is situated on one side of each said lock tab and, furthermore, a beveled surface is formed at the extreme lateral edges of the said lock tabs; the said reel has a round recess formed inside one end and, furthermore, with a plurality of check blocks protruding inward from its top extent; an annular spooling groove is disposed around the exterior of the said reel and a clasp tab protrudes from one side of the said spooling groove; a circular recess is formed inside one end of the said reel and a hole is fabricated through the center; a retaining tab is situated on the inner lateral extent of the said circular recess and a concentric spring of a multi-wound arrangement is contained in the said circular recess with its outermost extremity secured onto the said restraining tab; the said lower base is discoidal in shape and has a perforation through one side and a spindle shaft projecting from the center of its bottom extent, the said spindle shaft having a rectangular mounting column at the tip, a hole in the center, and a slot imposed along the center; to enable the said shoelace adjustment mechanism of the invention herein, one extremity of the said shoelace is inserted through the said perforation of the said lower base and attached to the said clasp tab at one side of the said reel spooling groove, while the opposite extremity of the said shoelace is inserted through the said holes of the said push button and restrained at one side of the said push button by means of a clip; the said reel is sleeved onto the said lower base spindle shaft, wherein the center extremity of the said concentric spring is inserted into the said slot of the said spindle shaft, the said spindle, shaft is extended through the said round recess of the said reel, the said coil spring is placed into the said hole in the center of the said rectangular mounting column at the tip of the said spindle shaft and, furthermore, such that the said coil spring protrudes slightly from the said mounting column; the said square recess in the bottom extent of the said coupling component is snug fitted onto the said rectangular mounting column at the tip of the said spindle shaft and, furthermore, the said lock tabs engage the said check blocks at the top extent of the said reel; the said helical spring is placed within the said round recess in the top extent of the said coupling component, the said bore formed within the said push button sleeved onto the top end of the said coupling component, and the said cover plate and the said lower base are conjoined to complete the entire said shoelace adjustment mechanism.
US Referenced Citations (5)
Number Name Date Kind
5157813 Carroll Oct 1992 A
5177882 Berger Jan 1993 A
5327662 Hallenbeck Jul 1994 A
5502902 Sussmann Apr 1996 A
5848457 Silagy Dec 1998 A
Foreign Referenced Citations (1)
Number Date Country
290847 Nov 1988 EP