WO2001042081A1 - Maillot de bain flottant et son procede de fabrication - Google Patents

Maillot de bain flottant et son procede de fabrication Download PDF

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Publication number
WO2001042081A1
WO2001042081A1 PCT/US2000/041991 US0041991W WO0142081A1 WO 2001042081 A1 WO2001042081 A1 WO 2001042081A1 US 0041991 W US0041991 W US 0041991W WO 0142081 A1 WO0142081 A1 WO 0142081A1
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WO
WIPO (PCT)
Prior art keywords
flotation
wearer
swimsuit
backsheet
buoyancy
Prior art date
Application number
PCT/US2000/041991
Other languages
English (en)
Inventor
Patti C. Gilmer
Original Assignee
Gilmer Patti C
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gilmer Patti C filed Critical Gilmer Patti C
Priority to AU45045/01A priority Critical patent/AU4504501A/en
Publication of WO2001042081A1 publication Critical patent/WO2001042081A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D7/00—Bathing gowns; Swim-suits, drawers, or trunks; Beach suits
    • A41D7/001—Non-sinkable swim-suits, drawers or trunks

Definitions

  • This invention relates generally to articles of apparel for water sports and the like, and more particularly to swimsuits for providing flotation to the wearer and specific means of construction of such swimsuits.
  • flotation swimsuit One simple type of personal flotation device that has been found to be especially well adapted for use by children and non-swimmers is the flotation swimsuit.
  • Flotation swimsuits are generally less obtrusive than standard personal flotation devices, such as life jackets. Thus, the wearer of a flotation swimsuit feels more natural, allowing the wearer to learn to swim without feeling overly dependent upon a flotation device. Additionally, flotation swimsuits may enhance the safety of children since it is more difficult for a child to remove a flotation swimsuit than it is to remove a vest or other similar flotation device.
  • Flotation swimsuits have been developed in a variety of designs. However, each of these suffers from disadvantages. For example, many flotation swimsuits rely upon inflatable compartments to provide buoyancy. I lowever, inflatable compartments usually require inflation immediately prior to use and may become ineffective if punctured, thereby placing a child at risk for drowning. Other flotation swimsuits rely upon blocks of closed cell foam or like materials to provide buoyancy. However, the use of a single, monolithic foam block has been found to be impractical since large foam blocks are generally bulky and not amenable to inclusion in a comfortable swimsuit.
  • Flotation swimsuits using multiple smaller foam blocks have been developed which are less bulky and obtrusive than suits using single foam blocks and have been found to be aesthetically more appealing. These suits typically include a number of smaller foam blocks distributed at strategic locations within the swimsuit to ensure proper flotation and to maximize the likelihood that the airways of the wearer will remain above the surface of the water.
  • the foam blocks have been inserted into open pockets, however, there is some danger that blocks may fall out of an open pocket, or be removed by a child. Accordingly, it is desirable to place the foam blocks in closed pockets to prevent their removal.
  • a floatation swimsuit having simplified sewing while still simulating the structure of a suit having numerous individual floatation elements. Furthermore, it is an object of the present invention to provide a floatation swimsuit which provides a properly balanced buoyancy to ensure that the wearer's head and breathing passages remain above the surface of the water but which allows for a feeling of natural flexibility to aid the wearer in to learn to swim. It is yet another object of the present invention to provide a floatation swimsuit which may be easily donned and removed.
  • the above objectives are accomplished according to the present invention by providing a floatation swimsuit having a unitary contoured floatation element for providing strategically distributed buoyancy to a wearer and for simulating the structure of several individual floatation elements.
  • the flotation swimsuit includes a form-fitting torso covering which includes a retaining pocket for enclosing the unitary flotation element.
  • the unitary flotation element includes a backsheet formed from a layer of buoyant material having a thickness within a first predetermined range for providing general buoyancy to a wearer and having an inner surface for presentation toward the wearer and an outer surface for presentation away from the wearer.
  • the unitary flotation element also includes a plurality of enhanced buoyancy regions integrally carried by the backsheet in fixed relative positions for providing enhanced buoyancy to strategically selected areas of the wearer's body.
  • Each of the enhanced buoyancy regions is formed from a buoyant material having a thickness substantially greater than that of the backsheet and each enhanced buoyancy region extends outwardly from the outer surface of the backsheet.
  • the floatation element may include a distributed buoyant layer having strategically positioned thickened areas to provide balanced floatation and may optionally include a fastenable opening in the chest region to allow easier donning and removal of the suit.
  • FIG. 1 illustrates a front perspective view of an unitary flotation element for use in a flotation swimsuit in accordance with a first embodiment of the present invention.
  • FIG. 2 illustrates a front perspective view of a set of separate blocks of buoyant foam as are typically used in prior art flotation swimsuits.
  • FIG. 3 illustrates a front view of a prior art floatation swimsuit utilizing the separate blocks of buoyant foam of claim 2.
  • FIG. 4 illustrates a front view of a floatation swimsuit utilizing a unitary flotation element in accordance with the embodiment of FIG. 1.
  • FIG. 4B illustrates a cross sectional view through a portion of the flotation swimsuit
  • FIG. 5 illustrates a front view of a sleeved floatation swimsuit having a whole body flotation member including enhanced buoyancy regions in accordance with a second embodiment of the present invention.
  • FIG. 6 illustrates a front view of a sleeveless floatation swimsuit having a whole body flotation member including enhanced buoyancy regions in accordance with a second embodiment of the present invention.
  • FIGS. 7A-C illustrate front views of flotation swimsuits having a variety of upper torso enhanced buoyancy regions for use in accordance with variations of the embodiments of FIGS. 5 and 6.
  • FIGS. 8A-G illustrate front views of a flotation swimsuits having a variety of lower torso enhanced buoyancy regions for use in accordance with variations of the embodiments of FIGS. 5 and 6.
  • FIG. 9 illustrates a front view of a floatation swimsuit having a upper torso distributed buoyancy layer and including enhanced buoyancy regions in accordance with a yet another embodiment of the present invention.
  • FIGS. 10A and 10B illustrate front views of flotation swimsuits having fastenable chest openings in accordance with yet another embodiment of the present invention.
  • FIG. 11 illustrate front and rear views, respectively, of a flotation swimsuit having a fastenable back opening in accordance with yet another embodiment of the present invention.
  • FIG. 12A and 12B illustrate front and rear views, respectively, of a single front flotation element in accordance with a preferred embodiment of the present invention.
  • FIG. 13 A and 13B illustrate front and rear views, respectively, of a rear flotation element in accordance with a preferred embodiment of the present invention.
  • Flotation swimsuit A includes a form-fitting torso covering 60 having an element retaining pocket 54 for enclosing an unitary flotation element 20 depicted in FIG. 1.
  • Unitary flotation element 20 includes a backsheet 22 from which protrude a plurality of enhanced buoyancy regions 24, 26, 28 and 30, for providing additional buoyancy to selected areas of flotation swimsuit A, thereby strategically controlling its buoyancy distribution. As shown in FIG. 4,
  • FIG. 4 illustrates a front perspective view of a prior art set of separate foam elements 34, 36, 38 and 40 such as would typically be used to provide targeted buoyancy in a traditional flotation swimsuit B.
  • FIG. 3 it is necessary to individually stitch each foam element 34, 36, 38 and 40 into its own respective element retaining pocket 42, 44, 46 and 48 to ensure that the elements remain at targeted locations.
  • the shown configuration has the advantage of allowing targeted distribution of buoyancy to the upper and lower torso regions of the wearer and has been found to be aesthetically pleasing.
  • the stitching required to form and close numerous element retaining pockets 42, 44, 46, and 48 adds greatly to the complexity and expense of the stitching and construction steps required to produce flotation swimsuits B incorporating multiple foam elements.
  • FIG. 4 illustrates a front view of a floatation swimsuit A utilizing the unitary flotation element 20 of FIG. 1.
  • unitary flotation element 20 may attached to the form- fitting torso covering 60 of flotation swimsuit A utilizing a fabric sheet 52 which is stitched to form-fitting torso covering 60 of flotation swimsuit A to form an element retaining pocket 54 enclosing unitary flotation element 20.
  • the stitching required to form element retaining pocket 54 and enclose unitary flotation element 20 is considerably less complex and expensive than the stitching that would be required to form the multiple element retaining pockets 42, 44, 46, and 48 used in a traditional flotation swimsuits such as swimsuit B shown in FIG. 3.
  • FIG. 4B illustrates a cross sectional view through a portion of a flotation swimsuit A (taken along cut line ⁇ - ⁇ ) incorporating a unitary flotation element 20 (shading indicates
  • a form-fitting torso covering 60 is provided which, in the preferred embodiment, is a variant of a simple one-piece swimsuit.
  • Form-fitting torso covering 60 is constructed from a fabric sheet 62 defining an inner surface 64 for presentation toward a wearer and an outer surface 66 for presentation away from the wearer.
  • fabric sheet 62 is a nylon/lycra fabric sheet, although other fabrics suitable for use in conventional swimsuits may also be acceptable.
  • Unitary flotation element 20 is maintained adjacent the outer surface 66 of form-fitting torso covering 60 by fabric sheet 52 which is affixed to form-fitting torso covering 60 by stitching 68 to form unitary element retaining pocket 54.
  • fabric sheet 52 may be affixed to form-fitting torso covering 60 by a variety of other methods such as adhesives, lamination or rivets.
  • Unitary flotation element 20 includes a backsheet 22 having a first predetermined thickness and constructed from a buoyant material for providing general buoyancy to a wearer.
  • a plurality of enhanced buoyancy regions 24 and 28 extend outwardly from the outwardly disposed surface of backsheet 22 at fixed relative positions for providing additional, strategically targeted buoyancy to specific areas of the wearer's body.
  • buoyancy is targeted to the wearer's upper and lower torso regions to stabilize the wearer's flotation and to maximize the distance between the wearer's air passages and the surface of the water.
  • Each enhanced buoyancy region 24 and 28 is constructed from a buoyant material and has a thickness in a second predetermined range which is substantially greater than the thickness of backsheet 22.
  • unitary flotation element 20 is constructed from a single piece of buoyant material which encompasses both backsheet 22 and enhanced buoyancy regions 24, 26, 28 and 20 as illustrated in FIG. 1.
  • unitary flotation element 20 may molded from a closed-cell foamed plastic which is of a thermoformable grade, such as a foam from the polyolefin family of materials.
  • the foamed plastic should be relatively lightweight, having a density of no more that 4 pcf (pounds per cubic foot).
  • floatation element 20 is a cross-linked polyethylene foam material having a density of approximately 2 pcf, such as is used in some other personal flotation devices.
  • an expanded polypropylene foam having a similar density could also be used.
  • a second unitary flotation element having a similar structure may also be included for attachment to the rear of form-fitting torso covering 60 as necessary to provide an appropriate buoyancy distribution to keep a wearer's head above the surface of a body of water.
  • fabric sheet 52 is laminated to the outwardly disposed surface of unitary flotation element 20, thereby ensuring that fabric sheet 52 closely follows the contour of unitary flotation element 20.
  • the periphery of fabric sheet 52 may then be sewn to torso covering 60 to form an element retaining pocket 54.
  • Laminating fabric sheet 52 to unitary flotation element 20 ensures that no shifting of unitary flotation element 20 occurs within element retaining pocket 54.
  • laminating fabric sheet 52 to unitary flotation element 20 also results in a finished flotation swimsuit A which simulates the aesthetically desirable contoured look which would be obtained by attaching multiple foam elements in a traditional flotation swimsuit B as shown in FIG. 3.
  • unitary floatation element 20 will be formed as follows.
  • the foam material is cut to a suitable pre-molding size, called a blocker, and heated in a conveyorized, computer-controlled oven.
  • a suitable pre-molding size called a blocker
  • the blocker is removed from the oven conveyor and placed between two machined aluminum mold halves attached to the platens of a hydraulic or air-cylinder operated press.
  • the press is operated, closing the mold halves around the heated blocker, forcing the foam into the desired shape, and holding it there while the material is cooled to a temperature sufficiently cool enough to allow it to maintain the desired shape.
  • the molded blocker, containing one or more of the desired flotation elements 20 is then removed from the molds and any necessary trimming of unwanted flashing is done.
  • the fabric material may be laminated to the foamed plastic in either a one-step or a two-step process.
  • the one-step process two fabric layers are utilized, one for the top of the foam and one for the bottom of the foam. Both of the layers are pre-coated on one side with a heat-activated adhesive, and are placed on the top or the bottom, respectively, of the foam blocker during the foam heating process.
  • the fabric is affixed to the foam through a combination of heat and pressure.
  • the fabric conforms to the shape the foam is being forced into during the molding process.
  • This molded composite may then be removed from the molds as described above, and any necessary trimming of unwanted flashing is done. If desired, a specific amount of flashing may be left, which will be a combination of fabric/foam/fabric in which the foam has been compressed to as minimal thickness, thereby facilitating subsequent sewing operations necessary to complete the flotation suit.
  • the fabric is affixed to the molded foam component in a secondary operation.
  • a pre-molded foam component is placed between two machined aluminum mold halves that are heated, with the two pieces of fabric, with their pre-coating of heat-activated adhesive, being placed on the top and the bottom of the foam.
  • the press is operated, laminating the fabric to the foam as it is being stretched to follow the contours of the pre-molded foam.
  • the two-step method could be employed to allow the fabric to extend beyond the dimensions of the pre-molded and already trimmed foam part in order to eliminate any foam in the sewabje area, thus making the sewing operations easier to perform.
  • FIGS. 12A and B and 13 A and B illustrate a front and rear views of a presently preferred configuration of flotation elements for use in a flotation swimsuit A.
  • each of front and rear flotation elements 60 and 62 include a plurality of enhanced buoyancy regions 66 disposed atop a backsheet 68. Additionally, each back sheet 68 includes a plurality of inwardly disposed flexion channels 70 for allowing the flotation element 60 or 62 to flex to fit the form of the wearer. Flexion channels 70 increase the flexibility of the flotation swimsuit A, and in conjunction with a properly balanced buoyancy distribution can assist a wearer in learning to swim without creating a feeling of unnatural stiffness or buoyancy upon which the wearer may become dependent.
  • the front and rear floatation elements shown respectively in FIGS 12 and 13 represent a configuration providing approximately 12 pounds of buoyancy.
  • the cubic volume of the components represented by these drawings is 350 in 3 .
  • Other sizes will have proportional increases or decreases in the buoyancy provided by virtue of the proportional increases or decreases in their cubic volume.
  • these changes in cubic volume may be made by increasing or decreasing the "footprint" of the part, or by increasing or decreasing the thickness of the part, or by a combination of both of these methods.
  • flotation components having a total flotation specification of 9 pounds of buoyancy would require 75% of the cubic volume necessary to provide 12 pounds of buoyancy.
  • the design of this 9 pound part would be done incorporating this absolute cubic volume value.
  • Other desired bouyancies can be achieved by similarly varying the dimensions of the flotation elements.
  • fabric components, form-fitting torso covering 60 and element retention pockets 54 include a dye which may be slowly bleached upon exposure to chlorinated water and/or sunlight, providing an indication to the wearer that the fabric materials of the swimsuit are likewise beginning to degrade.
  • FIG. 5 and FIG. 6, respectively, illustrate front views of sleeved and sleeveless floatation swimsuits C having a distributed flotation layer and including enhanced buoyancy regions in fixed relative positions in accordance with a second embodiment of the present invention.
  • a form-fitting torso covering 100 is provided, which includes a distributed layer of buoyant material 101 (indicated by speckling) distributed throughout a substantial portion thereof.
  • Enhanced buoyancy regions 102, 104, 106 and 108 are provided at selected fixed sites upon the surface of form- fitting torso covering 100 to provide strategically distributed buoyancy to the wearer.
  • Form-fitting torso covering 100 is preferably constructed from a flexible, high- strength, buoyant material such as the closed-cell neoprene commonly used in the construction of wet suits for swimmers and divers.
  • form- fitting torso covering 100 and any associated sleeves may include one or more layers of fabric laminated or otherwise attached to the buoyant material.
  • it may also be preferable to include a component which is opaque to ultraviolet radiation in the construction of form- fitting torso covering 100 to provide a wearer with protection from harmful solar radiation.
  • Enhanced buoyancy regions 102, 104, 106 and 108 are preferably integrally molded to protrude from the outer surface of form- fitting torso covering 100.
  • enhanced buoyancy regions 102, 104, 106, and 108 may also be attached to the outer surface of form-fitting torso covering by stitching or may be enclosed within element retaining pockets similar to those discussed with regard to the embodiment of FIG. 1 and 4. In either case, enhanced buoyancy regions 102, 104, 106 and 108 should has a thickness substantially greater than that of form- fitting torso covering 100. In embodiments wherein enhanced buoyancy regions 102, 104, 106 and 108 are not integral to form-fitting torso covering 100, they are preferably constructed of a material having a greater buoyancy and less flexibility than the material of which form-fitting torso covering 100 is composed.
  • FIGS. 7A-C illustrate front perspective views of a variety of upper torso enhanced buoyancy regions for use in accordance with variations of the embodiment of FIGS. 5 and 6.
  • Upper torso enhanced buoyancy region 110 may be rectangular as shown in FIG. 7 A, ovoid as shown in FIG. 7B, or any of a variety of other shapes as long as the center of buoyancy is conducive to maintaining the wearer's breathing passages above the surface of the water.
  • the upper torso enhanced buoyancy 110 region may also include a plurality of smaller enhanced buoyancy regions 112 and 114 disposed to provide buoyancy to selected regions of the upper torso of the wearer, such as the shoulder regions.
  • flotation swimsuit C also includes a lower torso enhanced buoyancy region 120 for providing additional buoyancy to the wearer.
  • FIGS. 8A-G illustrate front perspective views of a variety of lower torso enhanced buoyancy regions 120 for use in accordance with variations of the embodiment of FIGS. 5 and 6.
  • the lower torso enhanced buoyancy regions 120 may come in a wide variety of configurations including circumferentially distributed blocks (FIGS. 8 A through 8D and 8G) or a single circumferential band (FIGS. 8E and 8F)
  • FIG. 9 illustrates a front view of a floatation swimsuit D having an upper torso distributed buoyancy region 130, and including several enhanced buoyancy regions 132 in accordance with a yet another embodiment of the present invention.
  • distributed buoyancy region 130 is limited to the upper region of the torso of the wearer, and is not present at the lower torso and leg regions 134. Concentration of buoyancy in the upper torso region should also help to maintain the wearers air passages above the surface of the water in circumstances.
  • i: is preferable to provide a fastenable torso opening 140 to allow easier donning and removal of a flotation swimsuit E.
  • FIGS. 11A and 11B illustrate front perspective views of flotation swimsuits having a fastenable chest openings 140.
  • chest opening 140 may be fastened using a full length closure mechanism 142 such as a zipper or hook and loop fastener 144.
  • chest opening 140 may be fastened using a periodically spaced closure mechanism 146 such as ties, hooks, snaps, buttons, clasps, or adjustable straps with quick connect clasps.
  • FIGS. 11A and 11B illustrate a front and rear views, respectively, of a flotation swimsuit F having a distributed buoyancy region 130 (indicated by shading) and a fastenable back opening 150 in accordance with yet another embodiment of the present invention. As shown in FIG.
  • the fastenable closure mechanism 150 may include a full length closure mechanism 152 such as a zipper or hook and loop fastener.
  • rear fastenable opening 150 may be fastened using a periodically spaced closure mechanism such as a set of ties, hooks, snaps, buttons, clasps, straps, or adjustable straps having quick connect clasps.
  • buoyant collar 154 may be desirable to include a buoyant collar 154 to provide additional buoyancy beyond that provided by distributed buoyancy region 130.
  • the use of a buoyant collar 154 also may be used to ensure that the head of a very small child or unconscious wearer is kept above the surface of the water.
  • the Coast Guard has set minimum buoyancy values for personal flotation devices which correspond to the relative weights of the child wearers.
  • a minimum of 4.5 - 7.0 pounds of buoyancy is mandated for infants and small children weighing between thirty and forty pounds and a minimum of 11.0 pounds of buoyancy is required for children weighing between fifty and ninety pounds.
  • the maximum buoyancy likely to be necessary is approximately 19.0-20.0 pounds.
  • the Coast Guard regulations also mandate that no less than 50% of the required minimum buoyancy be distributed to front portion of the wearer in order to ensure a proper relative balancing of the wearer to maximize the distance between the wearers breathing passages and the surface of the water when the wearer is floating freely.

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  • Textile Engineering (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

L'invention concerne un maillot de bain flottant (A) fournissant une flottabilité stratégiquement répartie à un nageur. Ledit maillot de bain flottant comprend un revêtement de torse à liaison de forme (60) pourvu d'une poche de retenue (54) destinée à renfermer un élément flottant monobloc (20). Cet élément flottant monobloc comprend une feuille arrière (22) formée dans une couche de matériau de bouée dont l'épaisseur se situe dans une première plage prédéterminée de façon à fournir une flottabilité générale au nageur, une surface intérieure tournée vers le nageur, et une surface extérieure éloignée dudit nageur. L'élément flottant monobloc comprend également plusieurs régions à flottabilité améliorée (24, 26, 28, 30) intégralement supportées par la feuille arrière, de façon à fournir une flottabilité améliorée à des parties spécifiques du corps du nageur. Chacune des régions à flottabilité améliorée est formée à partir d'un matériau de bouée dont l'épaisseur est sensiblement supérieure à celle de la feuille arrière, et chaque région s'étend vers l'extérieur à partir de la surface extérieure de la feuille arrière.
PCT/US2000/041991 1999-11-08 2000-11-07 Maillot de bain flottant et son procede de fabrication WO2001042081A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU45045/01A AU4504501A (en) 1999-11-08 2000-11-07 Flotation swimsuit and method for construction thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16430599P 1999-11-08 1999-11-08
US60/164,305 1999-11-08

Publications (1)

Publication Number Publication Date
WO2001042081A1 true WO2001042081A1 (fr) 2001-06-14

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PCT/US2000/041991 WO2001042081A1 (fr) 1999-11-08 2000-11-07 Maillot de bain flottant et son procede de fabrication

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WO (1) WO2001042081A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7226330B2 (en) 1999-11-08 2007-06-05 Future Products Corporation Flotation swimsuit and method for construction thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540067A (en) * 1967-09-14 1970-11-17 Colette Deruaz Buoyant garment
US5423087A (en) * 1990-10-03 1995-06-13 Krent; Edward D. Body protective device
US5459874A (en) * 1989-03-19 1995-10-24 Patti Gilmer Construction of flotation swimsuits

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540067A (en) * 1967-09-14 1970-11-17 Colette Deruaz Buoyant garment
US5459874A (en) * 1989-03-19 1995-10-24 Patti Gilmer Construction of flotation swimsuits
US5423087A (en) * 1990-10-03 1995-06-13 Krent; Edward D. Body protective device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7226330B2 (en) 1999-11-08 2007-06-05 Future Products Corporation Flotation swimsuit and method for construction thereof

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Publication number Publication date
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