US3136026A - Method for producing a device for joining two flexibel elements - Google Patents

Method for producing a device for joining two flexibel elements Download PDF

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US3136026A
US3136026A US19640962A US3136026A US 3136026 A US3136026 A US 3136026A US 19640962 A US19640962 A US 19640962A US 3136026 A US3136026 A US 3136026A
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Prior art keywords
fabric
hairs
joining
loops
support
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Mestral George De
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Velcro SA
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Velcro SA
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Priority to CH725860 priority Critical
Priority to US117639A priority patent/US3114951A/en
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Priority to US19640962 priority patent/US3136026A/en
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    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0023Woven or knitted fasteners
    • A44B18/0038Male or hook elements
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S2/00Apparel
    • Y10S2/912Garment having a hook-loop type fastener
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/27Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
    • Y10T24/2733Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener] having filaments formed from continuous element interwoven or knitted into distinct, mounting surface fabric
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/27Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
    • Y10T24/2767Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener] having several, repeating, interlocking formations along length of filaments

Description

June 9, 1964 G. DE MESTRAL 3,136,026
METHOD FOR PRODUCING A DEVICE FOR JOINING TWO FLEXIBLE ELEMENTS Original Filed June 16, 1961 51 4 1 4 3 3 4 m v 3 I IlIlIIIlIIIIIIII/IIII"Ill:
INVENTOR GEORGE DE MESTRAL ATTORNEY United States Patent 3,136,026 METHOD FOR PRODUCING A DEVICE FOR J OINING TWO FLEXIBLE ELEMENTS George De Mestral, Commugny, Vand, Switzerland, as-
signor, by mesne assignments, to Velcro S.A., Lenzerheirie, Switzerland, a corporation of Switzerland Original application June 16, 1961, Ser. No. 117,639, now
Patent No. 3,114,951, dated Dec. 24, 1963. Divided and this application May 21, 1962, Ser. No. 196,409
7 Claims. (Cl. 28-72) This application is a division of my copending application Serial No. 117,639, filed June 16, 1961, now Patent No. 3,114,951.
Swiss Patents Nos. 295,638 and 339,155 disclose a joining device employing two supports, in this case two sheets of a velvet kind of fabric, each of these sheets being provided, on at least one of its faces, with a number of hooking members. These hooking members may be formed either of loops, or of hooks obtained by cutting a leg of a loop.
It will readily be understood that by applying two sheets of this kind of fabric one against the other, their hooks and their loops engage one within the other, and the two sheets remain hooked. This separation requires that a certain force be applied to the two sheets to withdraw them one from the other. Such hooking or joining devices are designed to be utilized in particular as closing devices for clothes, curtains or other articles, as a substitute for slide closing devices, buttons and other attachments of this kind, everywhere where a flexible, invisible and easily opened closure olfers advantages.
The invention relates to a joining device of the kind described in the two above mentioned patents, but of simplified construction. The joining device according to the invention comprises two supports in the shape of strips provided, on at least one of their faces, with a number of hooking members, these supports being designed to be applied one against the other, the hooking members of one of the supports being constituted by loops. This device is characterized by the fact that the hooking members of the other support are constituted by hairs folded back towards the corresponding face of the support.
The invention also has for an object a method of manufacture of this device, characterized in that, after having formed a support provided with standing up hairs, these are subjected to pressure, simultaneously to a heat treatment, so as to cause them to fold back against the corresponding face of the support and to remain fixed in the folded over position.
The accompanying drawing shows, diagrammatically FIGURE 2 shows'a step of the method of manufacture of the joining device.
FIGURE 3 shows, in section, how the hooking devices of the two supports of the joining device engage one within the other.
FIGURE 4 is a plan view of the support showing the hairs folded back.
FIGURE 5 shows a modified embodiment of the method of manufacture shown in FIGURE 2.
FIGURE 6 is a section showing how the booking members of a joining device engage one within the other, according to a modified method of manufacture.
FIGURE 7 is a plan view of the support with the folded back hairs, according to this modified method.
FIGURE 8 is a diagrammatical view in section of "Ice another embodiment of the joining device in the hooking position.
Referring to FIG. 1, the uncut velvet kind of fabric shown is manufactured by forming a base which comprises several weft threads 1 and several warp threads 2. The hairs 3 of this fabric are formed by means of additional warp threads 4 which have been passed over metallic bars, not shown, in the shape of spikes. Once they have been passed around these bars, the additional warp threads 4 constitute loops which are then cut so as to produce, each one, two hairs 3.
Another method of manufacture of a velvet kind of fabric, of the same kind as that shown in FIG. 1, may also be obtained by weaving simultaneously two strips each formed of a base comprising several weft threads 1 and several warp threads 2, additional warp threads being disposed, during a same weaving operation, between the two strips, so as to join the same. Once the weaving of these two strips is finished, it is sufiicient to cut the additional warp threads, disposed substantially perpendicular to their base and joining them together, in order to obtain two independent strips of fabric each provided with the hairs 3.
Preferably, these additional warp threads 4 are of artificial material, for example thermoplastic material, so as to be able to preserve, after a heat treatment, the form which has been given to them. These additional warp threads may be either single-ply or multi-ply.
The followingstep in the method of manufacture of the joining device consists in folding back the hairs 3 in the direction of the corresponding face of the support formed by the fabric base 1, 2. This operation may be carried out by applying a flat object 10 against the hairs 3 of the fabric in order to fold them back, for example all of them simultaneously to a same side, as shown in FIG. 2. In order that the hairs 3, once they have been folded back, may retain their position, the fabric may be subjected, near its base 1, 2, to a heat treatment, for example by means of infra-red ray lamps, by means of a vapour jet or a heated air jet directed as shown by the arrows 5 of FIG. 2. Thus, the foot of each of the hairs 3 assumes the shapes-shown in the drawing and retains the same after cooling and polymerization of the material forming the hair. In order to increase the resistance to tearing of the hairs 3 out of the fabric 1, 2, the fabric may be subjected to impregnation, for example with gluing products.
When a fabric of the kind shown in FIG. 2, having all the hairs 3 folded back on the same side, is applied against a strip of fabric 6 of the uncut kind provided on one of its faces with a number of small loops 7, the hairs 3 grip the small loops 7 and offer a strong resistance to a cutting force exerted in the direction of the arrows 8 and 9 (FIG. 3). In the direction which is the reverse of that of the arrows, the resistance is practically nonexistent. As regards the separation of the fabric 6 from the fabric 1, 2, in a direction transversal to the latter, the necessary effort for such a separation is relatively small. Such a fabric, according to FIG. 2, is therefore only applicable under certain particular circumstances, in which the force to separate the two objects to be joined is always exerted in a definite direction and by cutting.
It is however possible to manufacture a fabric of the kind shown in FIG. 2 which olfers a higher resistance to separation than the latter in all cutting directions, when it is applied against a fabric of the uncut kind, such as the fabric 6. FIG. 5 shows, as it happens, a modification of the method of manufacture of the joining device, according to which the hairs 3, instead of all being folded back in the same direction, are folded back in various directions. To that end, it is sufiicient to apply a flat object, such as the object 10, against the fabric 1, 2, carrying out if necessary a reciprocating movement, so as to produce a spreading of the hairs 3 in all directions. Thereafter, the heat treatment applied against the base of the fabric holds the hairs 3 in their folded back position. The fabric may then be subjected to an impregnation operation in order to improve the anchoring qualities of the hairs 3 in the base of the fabric 1, 2.
FIG. 6 shows how the hairs 3 of the fabric according to this modified embodiment engage in the small loops 7 of an uncut fabric 6. It will be seen from this illustration that the joining device will resist the separation of the two strips of fabric, by cutting, in whatever direction the cutting efforts are made.
FIG. 7 shows diagrammatically, in plan, how a fabric may present itself according to this embodiment.
FIG. 8 shows another embodiment of the joining device, in which the additional warp threads 4 forming the hairs 3 are constituted by threads of thermoplastic material, for example of the nylon kind, provided with notches 11 forming hooks. These additional warp threads 4 are therefore formed with these notches 11 before the Weaving operation. The presence of these notches 11 on the folded back hairs 3 appreciably increases the resistance to separation of the hooking device, when these hairs 3 engage in the small loops 7 of an uncut fabric 6.
Preferably, this fabric with folded back hairs 3, according to the embodiment shown in FIG. 8, is produced as a result of the same operations already described above with reference to FIGS. 2 and in particular.
Obviously, the notches 11 may have any shape, they may be serrated or in the shape of cells the edges of which would form two oppositely placed teeth.
As a modification of the embodiment according to FIG. 8, the notches 11 could be formed on the standing up hairs after the weaving operation, these standing up hairs 3 being then folded back against the base of the fabric.
In the preceding embodiments, it has always been a question of forming the support for the hooking members by a weaving operation. However, it is obvious that one could employ as a support for the hooking members any strip or plate of plastic material, for example, on which the hooking members would have been applied afterwards by electrostatic dispersion and gluing.
The standing up hairs 3 could also be obtained as one with the plate forming the support by extrusion of plastic material through a screen during the molding of the supporting plate, so as to form the hairs 3.
I claim:
1. A method for producing a device for joining two flexible elements comprising forming two supports, providing one of said supports with a plurality of loops, providing the other support with a plurality of upstanding straight-lined elements directed towards said loops, subjecting said upstanding straight-lined elements substantially simultaneously to a heat treatment source and to a pressure source in such a direction that said elements are directed in a plurality of directions each at an acute angle to said other support, thereby providing a plurality of said straight-lined elements directed in different directions for engagement with said loops of said one of said supports.
2. A method for producing a device for joining two flexible elements comprising forming one support, providing said one support with a plurality of loops, weaving together a plurality of weft threads and a plurality of warp threads together with a plurality of auxiliary warp threads, forming a plurality of loops with said auxiliary warp threads, forming a plurality of upstanding straightlined elements directed towards said loop of said one support from said so-formed loops of said auxiliary warp threads, subjecting said upstanding straight-lined elements substantially simultaneously to a heat treatment source and to a pressure source in such a direction that said elements are directed in a plurality of directions each at an acute angle to said so-woven plurality of weft threads and plurality of warp threads with said auxiliary warp threads, thereby providing a plurality of said straightlined elements directed in diiferent directions for engagement with said loops of said one support.
3. The method of claim 1 wherein said upstanding straight'lined elements are of thermoplastic material.
4. The method of claim 3 including the step of forming notches in said upstanding straight-lined elements prior to said step of subjecting said elements to said heat treatment source and to said pressure source.
5. The method of claim 2 wherein said upstanding straight-lined elements are of thermoplastic material.
6. The method of claim 5 including the step of forming notches in said upstanding straight-lined elements prior to said step of subjecting said elements to said heat treatment source and to said pressure source.
7. A method for producing a device for joining two flexible elements comprising forming two supports, providing one of said supports with a plurality of loops, providing the other support with a plurality of upstanding straight-lined elements directed towards said loop, subjecting said upstanding straight-lined elements substantially simultaneously to a heat treatment source and to a pressure source in such a direction that said elements are directed at an acute angle to said other support, thereby providing a plurality of said straight-lined elements for engagement with said loops of said one of said supports.
References Cited in the file of this patent UNITED STATES PATENTS 108,739 Taylor Oct. 25, 1871 1,357,929 Van Heusen Nov. 2, 1920 2,389,565 Taberlet Nov. 20, 1945 2,806,476 Thompson Sept. 17, 1957 2,820,277 Forster Jan. 21, 1958 2,979,914 Miller Mar. 28, 1961 3,000,384 Piers Sept. 19, 1961 3,009,235 De Mestral Nov. 21, 1961 3,020,613 Morin Feb. 13, 1962 3,031,730 Morin May 1, 1962 FOREIGN PATENTS 183,720 Austria Apr. 15, 1955 1,064,360 France May 13, 1954 1,039,964 Germany Oct. 2, 1958

Claims (1)

1. A METHOD FOR PRODUCING A DEVICE FOR JOINING TWO FLEXIBLE ELEMENTS COMPRISING FORMING TWO SUPPORTS, PROVIDING ONE OF SAID SUPPORTS WITH A PLURALITY OF LOOPS, PROVIDING THE OTHER SUPPORT WITH A PLURALITY OF UPSTANDING STRAIGHT-LINED ELEMENTS DIRECTED TOWARDS SAID LOOPS, SUBJECTING SAID UPSTANDING STRAIGHT-LINED ELEMENTS SUBSTANTIALLY SIMULTANEOUSLY TO A HEAT TREATMENT SOURCE AND TO A PRESSURE SOURCE IN SUCH A DIRECTION THAT SAID ELEMENTS ARE DIRECTED IN A PLURALITY OF DIRECTIONS EACH AT AN ACUTE ANGLE TO SAID OTHER SUPPORT, THEREBY PROVIDING A PLURALITY OF SAID STRAIGHT-LINED ELEMENTS DIRECTED IN DIFFERENT DIRECTIONS FOR ENGAGEMENT WITH SAID LOOPS OF SAID ONE OF SAID SUPPORTS.
US19640962 1960-06-23 1962-05-21 Method for producing a device for joining two flexibel elements Expired - Lifetime US3136026A (en)

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US117639A US3114951A (en) 1960-06-23 1961-06-16 Device for joining two flexible elements
US19640962 US3136026A (en) 1960-06-23 1962-05-21 Method for producing a device for joining two flexibel elements

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522637A (en) * 1968-03-06 1970-08-04 George C Brumlik Self-gripping fastening filament
US3748701A (en) * 1970-04-29 1973-07-31 Velcro Sa Soulie Adhesive element in cloth form
US3921258A (en) * 1971-08-13 1975-11-25 Ingrip Fasteners Asymmetrical self-gripping device
US4198734A (en) * 1972-04-04 1980-04-22 Brumlik George C Self-gripping devices with flexible self-gripping means and method
US4290832A (en) * 1976-08-13 1981-09-22 Minnesota Mining And Manufacturing Company Method for making fasteners
EP0052338A1 (en) * 1980-11-14 1982-05-26 Yoshida Kogyo K.K. Hooked fabric fastener tape and method of producing same
US4646397A (en) * 1984-06-18 1987-03-03 Yoshida Kogyo K. K. Surface-type fastener
US4769855A (en) * 1987-01-23 1988-09-13 Elephant Garment Co., Ltd. Baby's night gown
WO1995022918A1 (en) * 1994-02-28 1995-08-31 Velcro Industries B.V. Woven self-engaging fastener
US5473800A (en) * 1993-04-08 1995-12-12 Magictape Co., Ltd. Separable fastening component
US5884374A (en) * 1997-11-20 1999-03-23 Velcro Industries B.V. Fastener members and apparatus for their fabrication
US5887320A (en) * 1997-03-21 1999-03-30 Velcro Industries B.V. Fastener component with flexible fastener members
US5928059A (en) * 1998-01-27 1999-07-27 Wicks; Trenna Ruston Maternity garment
US6018852A (en) * 1998-03-02 2000-02-01 Velcro Industries B.V. Touch fastener tape
US6533981B1 (en) 1997-01-21 2003-03-18 Velcro Industries B. V. Molding of fasteners and other features
US20040143942A1 (en) * 2003-01-27 2004-07-29 3M Innovative Properties Company Web constructions with severed elongate strands
US6930277B2 (en) 1997-09-10 2005-08-16 Velcro Industries B.V. Fastener element molding
US20100107292A1 (en) * 2008-10-17 2010-05-06 Thales Headset Including a System for Securing the Visor by Microfibres
US8690472B2 (en) 2009-03-25 2014-04-08 Airbus Operations Limited Orientation of interfacing projections

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US108739A (en) * 1870-10-25 Improvement in harness-hooks
US1357929A (en) * 1920-05-28 1920-11-02 John Manning Van Heusen Garter
US2389565A (en) * 1942-11-05 1945-11-20 Fred R Taberlet Nonmetallic separable fastener and method of making the same
FR1064360A (en) * 1951-10-22 1954-05-13 New velvet type fabric
AT183720B (en) * 1951-11-30 1955-11-10 Degussa Zipper
US2806476A (en) * 1954-05-06 1957-09-17 Hazle D Thompson Dress comb
US2820277A (en) * 1954-10-26 1958-01-21 Forster Karl Method and apparatus for making a hooked pile fabric
DE1039964B (en) * 1957-06-27 1958-10-02 Wilhelm Uhrig Coil spring zipper
US2979914A (en) * 1959-12-31 1961-04-18 Frick Co Product chiller
US3000384A (en) * 1960-01-04 1961-09-19 Jr Eber F Piers Fastener tie
US3009235A (en) * 1957-10-02 1961-11-21 Internat Velcro Company Separable fastening device
US3020613A (en) * 1959-02-20 1962-02-13 Louis H Morin Ladder-like burr separable fastener
US3031730A (en) * 1958-09-26 1962-05-01 Louis H Morin Burr-type closure or coupling element

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US108739A (en) * 1870-10-25 Improvement in harness-hooks
US1357929A (en) * 1920-05-28 1920-11-02 John Manning Van Heusen Garter
US2389565A (en) * 1942-11-05 1945-11-20 Fred R Taberlet Nonmetallic separable fastener and method of making the same
FR1064360A (en) * 1951-10-22 1954-05-13 New velvet type fabric
AT183720B (en) * 1951-11-30 1955-11-10 Degussa Zipper
US2806476A (en) * 1954-05-06 1957-09-17 Hazle D Thompson Dress comb
US2820277A (en) * 1954-10-26 1958-01-21 Forster Karl Method and apparatus for making a hooked pile fabric
DE1039964B (en) * 1957-06-27 1958-10-02 Wilhelm Uhrig Coil spring zipper
US3009235A (en) * 1957-10-02 1961-11-21 Internat Velcro Company Separable fastening device
US3031730A (en) * 1958-09-26 1962-05-01 Louis H Morin Burr-type closure or coupling element
US3020613A (en) * 1959-02-20 1962-02-13 Louis H Morin Ladder-like burr separable fastener
US2979914A (en) * 1959-12-31 1961-04-18 Frick Co Product chiller
US3000384A (en) * 1960-01-04 1961-09-19 Jr Eber F Piers Fastener tie

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522637A (en) * 1968-03-06 1970-08-04 George C Brumlik Self-gripping fastening filament
US3748701A (en) * 1970-04-29 1973-07-31 Velcro Sa Soulie Adhesive element in cloth form
US3921258A (en) * 1971-08-13 1975-11-25 Ingrip Fasteners Asymmetrical self-gripping device
US4198734A (en) * 1972-04-04 1980-04-22 Brumlik George C Self-gripping devices with flexible self-gripping means and method
US4290832A (en) * 1976-08-13 1981-09-22 Minnesota Mining And Manufacturing Company Method for making fasteners
EP0052338A1 (en) * 1980-11-14 1982-05-26 Yoshida Kogyo K.K. Hooked fabric fastener tape and method of producing same
US4646397A (en) * 1984-06-18 1987-03-03 Yoshida Kogyo K. K. Surface-type fastener
US4769855A (en) * 1987-01-23 1988-09-13 Elephant Garment Co., Ltd. Baby's night gown
US5473800A (en) * 1993-04-08 1995-12-12 Magictape Co., Ltd. Separable fastening component
WO1995022918A1 (en) * 1994-02-28 1995-08-31 Velcro Industries B.V. Woven self-engaging fastener
US5457855A (en) * 1994-02-28 1995-10-17 Velcro Industries, B.V. Woven self-engaging fastener
US6533981B1 (en) 1997-01-21 2003-03-18 Velcro Industries B. V. Molding of fasteners and other features
USRE40858E1 (en) * 1997-01-21 2009-07-21 Velcro Industries B.V. Fastener element molding
US5887320A (en) * 1997-03-21 1999-03-30 Velcro Industries B.V. Fastener component with flexible fastener members
US6930277B2 (en) 1997-09-10 2005-08-16 Velcro Industries B.V. Fastener element molding
US6524507B1 (en) 1997-11-20 2003-02-25 Velcro Industries B.V. Process and apparatus for forming fastener elements
US5884374A (en) * 1997-11-20 1999-03-23 Velcro Industries B.V. Fastener members and apparatus for their fabrication
US20030127769A1 (en) * 1997-11-20 2003-07-10 Velcro Industries B.V., A Netherlands Corporation Fastener members and apparatus for their fabrication
US5928059A (en) * 1998-01-27 1999-07-27 Wicks; Trenna Ruston Maternity garment
US6018852A (en) * 1998-03-02 2000-02-01 Velcro Industries B.V. Touch fastener tape
US20040143942A1 (en) * 2003-01-27 2004-07-29 3M Innovative Properties Company Web constructions with severed elongate strands
US7052565B2 (en) 2003-01-27 2006-05-30 3M Innovative Properties Company Web constructions with severed elongate strands
US20060113041A1 (en) * 2003-01-27 2006-06-01 3M Innovative Properties Company Web constructions with severed elongate strands
US20100107292A1 (en) * 2008-10-17 2010-05-06 Thales Headset Including a System for Securing the Visor by Microfibres
US8690472B2 (en) 2009-03-25 2014-04-08 Airbus Operations Limited Orientation of interfacing projections
US20140158294A1 (en) * 2009-03-25 2014-06-12 Airbus Operations Limited Orientation of interfacing projections
US9144961B2 (en) * 2009-03-25 2015-09-29 Airbus Operations Limited Orientation of interfacing projections

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