US3197155A - Device for tightening shoe laces - Google Patents

Device for tightening shoe laces Download PDF

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Publication number
US3197155A
US3197155A US311551A US31155163A US3197155A US 3197155 A US3197155 A US 3197155A US 311551 A US311551 A US 311551A US 31155163 A US31155163 A US 31155163A US 3197155 A US3197155 A US 3197155A
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Prior art keywords
housing
spring
drum
laces
braking
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Expired - Lifetime
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US311551A
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Chow Yut
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REV ANDREW SONG
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REV ANDREW SONG
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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C7/00—Holding-devices for laces
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/0036—Footwear characterised by the shape or the use characterised by a special shape or design
    • A43B3/0078—Footwear characterised by the shape or the use characterised by a special shape or design provided with logos, letters, signatures or the like decoration
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C11/00—Other fastenings specially adapted for shoes
    • A43C11/16—Fastenings secured by wire, bolts, or the like
    • A43C11/165—Fastenings secured by wire, bolts, or the like characterised by a spool, reel or pulley for winding up cables, laces or straps by rotation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G25/00—Household implements used in connection with wearing apparel; Dress, hat or umbrella holders
    • A47G25/80—Devices for putting-on or removing boots or shoes, e.g. boot-hooks, boot-jacks
    • A47G25/88—Devices for tucking ends of laces inside shoes or boots ; Devices for lacing

Definitions

  • This invention relates to a device for tightening the laces of a shoe.
  • the main object of the invention is to provide a construction of tightening device which is readily operable with two fingers of the one hand so as to permit loosening, braking, or automatic ⁇ spring-loaded tightening of the laces.
  • a second object of the invention is to apply a further improvement whereby the loosening or tightening movement may be readily controlled in the manner of a friction brake by a third finger or the same hand.
  • a device for tightening shoe laces comprises a housing apertured at spaced positions, a drum assembly rotatably mounted in the housing and having two shoe laces coiled concentrically thereon, each shoe lace passing out through one of the apertures of the housing, a spring acting between the housing and the drum assembly for rotation of the drum assembly with respect to the housing, and spring-loaded braking means acting between the housing and drum assembly and projecting at the exterior of the housing for manual shifting against the spring-loading to free the drum assembly.
  • the shoe laces can be pulled out of the housing, when the braking means are freed, so as to unwind off the drum and ⁇ at the same time wind up the loading spring. If the braking means is allowed to return to rest position the drum assembly is then locked in the tensioned condition. Subsequent operation of the braking means will allow the drum assembly to rotate under the influence of the loaded spring, whereby the tapes yare drawn back into the housing.
  • the drum assembly includes a pivot shaft rotatably mounted in the housing and carrying a drum for the flexible connector means, one end of said pivot shaft projecting at the exterior of the housing for engagement by the finger.
  • the braking means may comprise diametrically opposed radially-shiftable braking rods projecting at their outer end from the housing and each having a short portion to engage with a brake rim on the drum assembly, and spring-loading means acting outwardly against the inner ends of the rods to urge them into the position of braking engagement.
  • the springloading means for the braking rods consists of a C-spring which is disposed concentrically with the drum assembly and is common to the two braking rods.
  • FIG. 1 is a central vertical section through the device
  • FIG. 2 is a plan View, with part cut away to show details of internal construction
  • FIG. 3 is a perspective view, to a smaller scale, to show the manner of operation of the device with the fingers of one hand.
  • the device comprises a housing 1 which is open at its lower end 2, but is closed at its upper end by a cover 3.
  • the cover 3 has a central sleeve 4 which acts as a bearing for a hollow shaft 5 serving as a pivot.
  • the shaft 5V is of reduced diameter at its lower end and carries a retainer ange 6 and has a bore "i.
  • a drum .8 has a central apertured ange 9 which is engaged on the reduced portion of the shaft 5, enabling the drum to rotate Within the lower part of the housing.
  • On the drum are wound concentrically the turns 10 of two shoe laces 11, 12 which emerge from the housing through spaced apertures 13 i in its side wall.
  • the two laces 11, 12 are, in fact, constituted by a single length of shoe .lace the central portion 14 of which lace passes through apertures 15, 16 in the drum.
  • a springdrum 17 also engaged on the reduced portion of the shaft 5, the drum 17, the intermediate wall 17a, and the drum 8 being coupled by short pins 18 so as to be locked together for rotational movements.
  • a spiral spring 19 one end of which is connected in any convenient manner to a fixed point of the housing, and the other end of which is connected to the intermediate wall 17a, whereby the drums are rotationally spring-loaded with respect to the housing.
  • an annular raised brake rim 2t On the upper surface of the spring-drum is provided an annular raised brake rim 2t).
  • diametrically opposed slots in which are arranged two opposed braking rods 21, 22 terminating externally in finger buttons 23, 24.
  • Both of these rods abut at their inner ends against an outwardly-acting C- spring 25 lodged in the housing.
  • brake shoe elements 26 which can engage against the raised brake rim 20 of the spring-drum so as to brake the latter against rotation. It will be appreciated that in the rest position of the assembly, the rods 21, 22 are urged outwardly into braking condition, but can be pressed radially inwardly by finger pressure so as to release the drum to rotate.
  • the operation of the device is as follows: assuming that the two laces 11, 12 have been pulled fully out of the housing, e.g. at the time of putting the shoe onto the foot, the spring 19 will have become wound up on its spring drum, due to rotation of the latter, and will be under maximum tension.
  • the braking rods 21, 22 prevent the rotary parts from turning, so that the spring remains under tension.
  • the braking rods are pressed radially inwards by equal pressure applied on the two finger buttons 23, 24 thereby free the spring-drum and allowing the system to rotate under the action of the spring, thus causing the laces to be drawn in through the apertures 13 and wound upon the drum 8.
  • the pivot shaft 5 is coupled, for rotation, to the two drums.
  • the pressure of a third finger can be applied to the top .end ange 27 of the pivot shaft, as best seen in FIG. 3, thereby acting as a friction brake controlling the rapidity of movement of the rotary assembly. According to the amount of movement permitted by the fingers, the laces will be tightened to a greater or lesser extent by the tension of the spring.
  • buttons are again pressed radially inwards to free the spring-drum, whereupon the rotary system can rotate, winding up the spring, and allowing the laces to emerge to the desired extent from the housing.
  • a convenient manner of operation would be simply to grasp the device between two, or three fingers, as shown in FIG. 3, and pull the housing upwardly so as to draw out the laces.
  • the device can be made of relatively small dimensions so as to iit unobstrusively in position on a shoe, e.g, as an imitation buckle or other part of the decoration.
  • the action of tightening and loosening is substantially instantaneous, and there is no possibility of formation of knots. There is little if any frictional Wear involved on the laces, so that they may be expected to last for the life of the shoe without renewal.
  • a device for tightening shoe laces comprising a housing having a plurality of apertures at spaced positions, a drum assembly including an axial braking rim rotatably mounted in the housing, a shoe lace coiled concentrically on the drum assembly, saidl shoe lace being passed out through an aperture of the housing, Va coiled spring coupled to the housing and to the drum assembly for rotation of the drum assembly with respect to the housing,- diametrically-opposed radially-shiftable braking rods disposed in the housing and projecting at their outer end from said housing, a shoe on the inner endl of each.
  • braking rod to abut against the brakingrim of the drum assembly
  • a C-spring disposed in the housing concentrically with the ldrum assembly and abutting at its ends respectively against the inner end of the braking rods to urge said rods into braking engagement with the braking rim of the drum assembly.

Description

July 27, 1965 YUT cHoW DEVICE FOR TIGHTENING SHOE LAGES Filed Sept. 25, 1965 I7 27 5 2O 26 25 23 2| I9 FIG.I
I/Vl/f/VTO/Qf ,VUT @How United States Patent O 3,197,155 DEVICE FOR TIGHTENING SHOE LACES Yut Chow, Rev. Andrew Song, Pl). Box 5260, Kowloon, Hong Kong Filed Sept. 25, 1963, Ser.` No. 311,551 1 Claim. (Cl. 242-1071) This invention relates to a device for tightening the laces of a shoe.
The main object of the invention is to provide a construction of tightening device which is readily operable with two fingers of the one hand so as to permit loosening, braking, or automatic `spring-loaded tightening of the laces.
A second object of the invention is to apply a further improvement whereby the loosening or tightening movement may be readily controlled in the manner of a friction brake by a third finger or the same hand.
According to the present invention, a device for tightening shoe laces comprises a housing apertured at spaced positions, a drum assembly rotatably mounted in the housing and having two shoe laces coiled concentrically thereon, each shoe lace passing out through one of the apertures of the housing, a spring acting between the housing and the drum assembly for rotation of the drum assembly with respect to the housing, and spring-loaded braking means acting between the housing and drum assembly and projecting at the exterior of the housing for manual shifting against the spring-loading to free the drum assembly.
With such a construction, the shoe laces can be pulled out of the housing, when the braking means are freed, so as to unwind off the drum and `at the same time wind up the loading spring. If the braking means is allowed to return to rest position the drum assembly is then locked in the tensioned condition. Subsequent operation of the braking means will allow the drum assembly to rotate under the influence of the loaded spring, whereby the tapes yare drawn back into the housing.
In a preferred form, to obtain controlled movement of the drum assembly, a portion thereof projects at the exterior of the housing so as to act, when engaged by a third finger of the same hand, as a friction brake on the rotational movement of the drum assembly. In a convenient practical embodiment, the drum assembly includes a pivot shaft rotatably mounted in the housing and carrying a drum for the flexible connector means, one end of said pivot shaft projecting at the exterior of the housing for engagement by the finger.
The braking means may comprise diametrically opposed radially-shiftable braking rods projecting at their outer end from the housing and each having a short portion to engage with a brake rim on the drum assembly, and spring-loading means acting outwardly against the inner ends of the rods to urge them into the position of braking engagement. In a convenient arrangement, the springloading means for the braking rods consists of a C-spring which is disposed concentrically with the drum assembly and is common to the two braking rods.
In order that the nature of the invention may be readily ascertained, an embodiment of device for tightening shoe laces in accordance therewith is hereinafter particularly described by way of non-limiting example with reference to the figures of the accompanying drawing, wherein:
FIG. 1 is a central vertical section through the device,
FIG. 2 is a plan View, with part cut away to show details of internal construction,
FIG. 3 is a perspective view, to a smaller scale, to show the manner of operation of the device with the fingers of one hand.
In the construction illustrated, the device comprises a housing 1 which is open at its lower end 2, but is closed at its upper end by a cover 3.
The cover 3 has a central sleeve 4 which acts as a bearing for a hollow shaft 5 serving as a pivot. The shaft 5V is of reduced diameter at its lower end and carries a retainer ange 6 and has a bore "i. A drum .8 has a central apertured ange 9 which is engaged on the reduced portion of the shaft 5, enabling the drum to rotate Within the lower part of the housing. On the drum are wound concentrically the turns 10 of two shoe laces 11, 12 which emerge from the housing through spaced apertures 13 i in its side wall. The two laces 11, 12 are, in fact, constituted by a single length of shoe .lace the central portion 14 of which lace passes through apertures 15, 16 in the drum.
In the upper space of the housing is provided a springdrum 17 also engaged on the reduced portion of the shaft 5, the drum 17, the intermediate wall 17a, and the drum 8 being coupled by short pins 18 so as to be locked together for rotational movements. On the spring-drum 17 is mounted a spiral spring 19 one end of which is connected in any convenient manner to a fixed point of the housing, and the other end of which is connected to the intermediate wall 17a, whereby the drums are rotationally spring-loaded with respect to the housing. On the upper surface of the spring-drum is provided an annular raised brake rim 2t). In the upper part of the housing are provided diametrically opposed slots in which are arranged two opposed braking rods 21, 22 terminating externally in finger buttons 23, 24. Both of these rods abut at their inner ends against an outwardly-acting C- spring 25 lodged in the housing. On the braking rods are provided brake shoe elements 26 which can engage against the raised brake rim 20 of the spring-drum so as to brake the latter against rotation. It will be appreciated that in the rest position of the assembly, the rods 21, 22 are urged outwardly into braking condition, but can be pressed radially inwardly by finger pressure so as to release the drum to rotate.
The operation of the device is as follows: assuming that the two laces 11, 12 have been pulled fully out of the housing, e.g. at the time of putting the shoe onto the foot, the spring 19 will have become wound up on its spring drum, due to rotation of the latter, and will be under maximum tension. The braking rods 21, 22 prevent the rotary parts from turning, so that the spring remains under tension. When it is desired to tighten the laces, the braking rods are pressed radially inwards by equal pressure applied on the two finger buttons 23, 24 thereby free the spring-drum and allowing the system to rotate under the action of the spring, thus causing the laces to be drawn in through the apertures 13 and wound upon the drum 8. The pivot shaft 5 is coupled, for rotation, to the two drums. Accordingly, the pressure of a third finger can be applied to the top .end ange 27 of the pivot shaft, as best seen in FIG. 3, thereby acting as a friction brake controlling the rapidity of movement of the rotary assembly. According to the amount of movement permitted by the fingers, the laces will be tightened to a greater or lesser extent by the tension of the spring.
For release of the laces, the two finger buttons are again pressed radially inwards to free the spring-drum, whereupon the rotary system can rotate, winding up the spring, and allowing the laces to emerge to the desired extent from the housing. A convenient manner of operation would be simply to grasp the device between two, or three fingers, as shown in FIG. 3, and pull the housing upwardly so as to draw out the laces.
The device can be made of relatively small dimensions so as to iit unobstrusively in position on a shoe, e.g, as an imitation buckle or other part of the decoration. The action of tightening and loosening is substantially instantaneous, and there is no possibility of formation of knots. There is little if any frictional Wear involved on the laces, so that they may be expected to last for the life of the shoe without renewal.. Y Y l I claim:
A device for tightening shoe laces comprising a housing having a plurality of apertures at spaced positions, a drum assembly including an axial braking rim rotatably mounted in the housing, a shoe lace coiled concentrically on the drum assembly, saidl shoe lace being passed out through an aperture of the housing, Va coiled spring coupled to the housing and to the drum assembly for rotation of the drum assembly with respect to the housing,- diametrically-opposed radially-shiftable braking rods disposed in the housing and projecting at their outer end from said housing, a shoe on the inner endl of each. braking rod to abut against the brakingrim of the drum assembly, and a C-spring disposed in the housing concentrically with the ldrum assembly and abutting at its ends respectively against the inner end of the braking rods to urge said rods into braking engagement with the braking rim of the drum assembly.
References Cited by the Examiner UNITED STATES PATENTS 171,825 1/76 Lawton 242-107.1
365,481 6/87 Lyman 242--107.15
506,649 10/93 Watson 242-107.6
522,064 6/94 Keuffel 242-107.6
727,370 5/03 Edgerton et al. 242--107.6 2,514,628 7/50 Cortes 242-107.1 X Y2,923,490 2/60 Smith 242-96 FOREIGN PATENTS 683,181 11/52 Great Britain.
' Y MERVIN STEIN, Primary Examiner.
US311551A 1963-09-25 1963-09-25 Device for tightening shoe laces Expired - Lifetime US3197155A (en)

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Cited By (58)

* Cited by examiner, † Cited by third party
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US3918159A (en) * 1973-08-24 1975-11-11 Lawrence F Andrews Orthodontic appliance force equalizer
US4470558A (en) * 1982-06-16 1984-09-11 Lear Siegler, Inc. Retractable clothesline device
US4684076A (en) * 1985-06-06 1987-08-04 Lear Siegler, Inc. Retractable clothesline device
EP0540251A1 (en) * 1991-10-31 1993-05-05 William Carroll Shoelace tensioning device
US20030204938A1 (en) * 1997-08-22 2003-11-06 Hammerslag Gary R. Footwear lacing system
US20060156517A1 (en) * 1997-08-22 2006-07-20 Hammerslag Gary R Reel based closure system
US20070169378A1 (en) * 2006-01-06 2007-07-26 Mark Sodeberg Rough and fine adjustment closure system
US20100101061A1 (en) * 2005-06-27 2010-04-29 Shin Kyung Inc. Shoelace tightening device
US7950112B2 (en) 1997-08-22 2011-05-31 Boa Technology, Inc. Reel based closure system
US8277401B2 (en) 2006-09-12 2012-10-02 Boa Technology, Inc. Closure system for braces, protective wear and similar articles
US8381362B2 (en) 2004-10-29 2013-02-26 Boa Technology, Inc. Reel based closure system
US8424168B2 (en) 2008-01-18 2013-04-23 Boa Technology, Inc. Closure system
US8468657B2 (en) 2008-11-21 2013-06-25 Boa Technology, Inc. Reel based lacing system
US8516662B2 (en) 2010-04-30 2013-08-27 Boa Technology, Inc. Reel based lacing system
US8713820B2 (en) 2010-01-21 2014-05-06 Boa Technology, Inc. Guides for lacing systems
WO2015054722A1 (en) * 2013-10-14 2015-04-23 Mahe Falekava F A shoe lace fastening and locking device
US9101181B2 (en) 2011-10-13 2015-08-11 Boa Technology Inc. Reel-based lacing system
US9144168B2 (en) 2012-03-08 2015-09-22 The United States Of America, As Represented By The Secretary Of The Air Force Appendage-mounted display apparatus
US9149089B2 (en) 2010-07-01 2015-10-06 Boa Technology, Inc. Lace guide
US9179729B2 (en) 2012-03-13 2015-11-10 Boa Technology, Inc. Tightening systems
US9241539B1 (en) 2012-06-29 2016-01-26 Jeffrey Keswin Shoelace tightening method and apparatus
US9248040B2 (en) 2012-08-31 2016-02-02 Boa Technology Inc. Motorized tensioning system for medical braces and devices
USD751281S1 (en) 2014-08-12 2016-03-15 Boa Technology, Inc. Footwear tightening reels
USD758061S1 (en) 2014-09-08 2016-06-07 Boa Technology, Inc. Lace tightening device
US9375053B2 (en) 2012-03-15 2016-06-28 Boa Technology, Inc. Tightening mechanisms and applications including the same
US9439477B2 (en) 2013-01-28 2016-09-13 Boa Technology Inc. Lace fixation assembly and system
USD767269S1 (en) 2014-08-26 2016-09-27 Boa Technology Inc. Footwear tightening reel
US9516923B2 (en) 2012-11-02 2016-12-13 Boa Technology Inc. Coupling members for closure devices and systems
US9532626B2 (en) 2013-04-01 2017-01-03 Boa Technology, Inc. Methods and devices for retrofitting footwear to include a reel based closure system
USD776421S1 (en) 2015-01-16 2017-01-17 Boa Technology, Inc. In-footwear lace tightening reel
US9610185B2 (en) 2013-03-05 2017-04-04 Boa Technology Inc. Systems, methods, and devices for automatic closure of medical devices
US9629417B2 (en) 2013-07-02 2017-04-25 Boa Technology Inc. Tension limiting mechanisms for closure devices and methods therefor
USD788446S1 (en) * 2015-10-23 2017-06-06 Airtox International A/S Locking device for shoes
US9681705B2 (en) 2013-09-13 2017-06-20 Boa Technology Inc. Failure compensating lace tension devices and methods
US9700101B2 (en) 2013-09-05 2017-07-11 Boa Technology Inc. Guides and components for closure systems and methods therefor
US9706814B2 (en) 2013-07-10 2017-07-18 Boa Technology Inc. Closure devices including incremental release mechanisms and methods therefor
US9737115B2 (en) 2012-11-06 2017-08-22 Boa Technology Inc. Devices and methods for adjusting the fit of footwear
WO2017161044A1 (en) 2016-03-15 2017-09-21 Nike Innovate C.V. Box lacing channel for automated footwear platform
US9770070B2 (en) 2013-06-05 2017-09-26 Boa Technology Inc. Integrated closure device components and methods
US9872790B2 (en) 2013-11-18 2018-01-23 Boa Technology Inc. Methods and devices for providing automatic closure of prosthetics and orthotics
US9918865B2 (en) 2010-07-01 2018-03-20 3M Innovative Properties Company Braces using lacing systems
US9918516B1 (en) * 2017-02-08 2018-03-20 LNZ Products Inc. Lace 'N lock shoe tying system
US10070695B2 (en) 2010-04-30 2018-09-11 Boa Technology Inc. Tightening mechanisms and applications including the same
US10076160B2 (en) 2013-06-05 2018-09-18 Boa Technology Inc. Integrated closure device components and methods
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US10182935B2 (en) 2014-10-01 2019-01-22 Ossur Hf Support for articles and methods for using the same
US10251451B2 (en) 2013-03-05 2019-04-09 Boa Technology Inc. Closure devices including incremental release mechanisms and methods therefor
US10492568B2 (en) 2014-08-28 2019-12-03 Boa Technology Inc. Devices and methods for tensioning apparel and other items
US10499709B2 (en) 2016-08-02 2019-12-10 Boa Technology Inc. Tension member guides of a lacing system
US10543630B2 (en) 2017-02-27 2020-01-28 Boa Technology Inc. Reel based closure system employing a friction based tension mechanism
US10575591B2 (en) 2014-10-07 2020-03-03 Boa Technology Inc. Devices, methods, and systems for remote control of a motorized closure system
US10702409B2 (en) 2013-02-05 2020-07-07 Boa Technology Inc. Closure devices for medical devices and methods
US10772384B2 (en) 2017-07-18 2020-09-15 Boa Technology Inc. System and methods for minimizing dynamic lace movement
US10791798B2 (en) 2015-10-15 2020-10-06 Boa Technology Inc. Lacing configurations for footwear
US10842230B2 (en) 2016-12-09 2020-11-24 Boa Technology Inc. Reel based closure system
US11357279B2 (en) 2017-05-09 2022-06-14 Boa Technology Inc. Closure components for a helmet layer and methods for installing same
US11492228B2 (en) 2019-05-01 2022-11-08 Boa Technology Inc. Reel based closure system

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US522064A (en) * 1894-06-26 Tape-measure case
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US2514628A (en) * 1946-06-12 1950-07-11 Cortes Edmundo Electric cord holder and connector
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Cited By (111)

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Publication number Priority date Publication date Assignee Title
US3918159A (en) * 1973-08-24 1975-11-11 Lawrence F Andrews Orthodontic appliance force equalizer
US4470558A (en) * 1982-06-16 1984-09-11 Lear Siegler, Inc. Retractable clothesline device
US4684076A (en) * 1985-06-06 1987-08-04 Lear Siegler, Inc. Retractable clothesline device
EP0540251A1 (en) * 1991-10-31 1993-05-05 William Carroll Shoelace tensioning device
US7950112B2 (en) 1997-08-22 2011-05-31 Boa Technology, Inc. Reel based closure system
US20060156517A1 (en) * 1997-08-22 2006-07-20 Hammerslag Gary R Reel based closure system
US9339082B2 (en) 1997-08-22 2016-05-17 Boa Technology, Inc. Reel based closure system
US20080066346A1 (en) * 1997-08-22 2008-03-20 Hammerslag Gary R Reel based closure system
US7591050B2 (en) 1997-08-22 2009-09-22 Boa Technology, Inc. Footwear lacing system
US10362836B2 (en) 1997-08-22 2019-07-30 Boa Technology Inc. Reel based closure system
US9743714B2 (en) 1997-08-22 2017-08-29 Boa Technology Inc. Reel based closure system
US7954204B2 (en) 1997-08-22 2011-06-07 Boa Technology, Inc. Reel based closure system
US7992261B2 (en) 1997-08-22 2011-08-09 Boa Technology, Inc. Reel based closure system
US8091182B2 (en) 1997-08-22 2012-01-10 Boa Technology, Inc. Reel based closure system
US20030204938A1 (en) * 1997-08-22 2003-11-06 Hammerslag Gary R. Footwear lacing system
US10849390B2 (en) 2003-06-12 2020-12-01 Boa Technology Inc. Reel based closure system
US9867430B2 (en) 2003-06-12 2018-01-16 Boa Technology Inc. Reel based closure system
US8381362B2 (en) 2004-10-29 2013-02-26 Boa Technology, Inc. Reel based closure system
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