Patent Application
20150064999
The present invention relates generally to personal flotation devices, and more particularly to wearable personal flotation devices. Personal flotation devices are commonly used to keep children or novice swimmers safe in the water by keeping the user afloat. Personal flotation devices are generally worn on the body, and add buoyancy to keep a user above water. However, problems can occur where the buoyancy provided by the personal flotation device may cause the user to be unbalanced and uncomfortable in the water. Where a user's center of gravity and center of buoyancy are greatly misaligned, a personal flotation device may even cause a user to flip over into the water and make it difficult for the user to get back upright, endangering the user. It can readily be appreciated that there is a need for a personal flotation device that keeps a user safe and upright in the water while still allowing for a comfortable range of movement. The present invention fulfills these needs and provides further related advantages.
The present invention may be embodied in a personal flotation device comprising a shirt having two sleeves; a front flotation pad attached to the shirt and positioned on a user's torso; and two flotation sleeves, each flotation sleeve attached to one of the shirt's two sleeves. The front flotation pad is positioned above the user's midriff such that the user's center of buoyancy is positioned at or above the user's center of gravity.
In one aspect of this embodiment, the front flotation pad may comprise a buoyant foam encased in a water-resistant fabric. Similarly, the two flotation sleeves may each comprise a buoyant foam encased in a water-resistant fabric.
The shirt may comprise a stretch fabric, such as spandex or Lycra.
In a preferred embodiment, the two flotation sleeves may be positioned on a user's upper arm. In a more specific aspect, the shirt may comprise two armholes where the two sleeves are attached to the shirt, and the distance from each armhole to the flotation sleeve may be approximate 0.5-2.0 inches. The distance from a top edge of the front flotation pad to the armhole may be approximately 2-6 inches.
In another aspect, the shirt may further comprise a securing means positioned on a back side of the shirt to secure the shirt around a user. The securing means may comprise any appropriate means, some known examples of which include a zipper, buckle, hook-and-loop fastener (e.g., Velcro), buttons, laces, hooks, magnets, and the like.
The personal flotation device may further comprise two side pads attached to opposite ends of the front flotation pad to wrap around a user's torso.
The present invention may also be embodied in a personal flotation device comprising a shirt having two sleeves, the shirt comprising a stretchable, water-resistant fabric; a front flotation pad attached to the shirt and positioned on a user's torso; two side flotation pads positioned on opposite sides of the front flotation pad and configured to be wrapped around a user's torso; and two flotation sleeves, each flotation sleeve attached to one of the shirt's two sleeves and positioned on the user's upper arms. The front flotation pad is positioned such that the user's center of buoyancy is positioned at or above the user's center of gravity.
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following drawings.
The present invention resides in a personal flotation device that can be worn by a user. A front elevational view of a personal flotation device 10 in accordance with an embodiment of the present invention is shown in
In the depicted embodiment, the torso flotation pad 16 comprises an encased front flotation pad 20 and graduated side pads 22. The front flotation pad 20 comprises a flotation foam encased in fabric (e.g., neoprene, nylon, spandex, Lycra, etc.) and sewn to the front of the shirt 12. The graduated side pads 22, also comprising encased flotation foams, are attached to the front flotation pad 20 and wrap around the user's torso to the user's back. The graduated side pads 22 are then buckled together in the back using a buckle 24. The size of the user may be accommodated by adjusting straps attached to the buckle 24.
The front flotation pad 20 is raised upward from the midriff area to permit congruity between the wearer's center of gravity and center of buoyancy. The raised foam placement permits the wearer to maintain a substantially perpendicular angle to the water, which encourages upright stability. Further, the raised front flotation pad 20 keeps the user's center of buoyancy at or above the user's center of gravity, which helps to keep the user's head above water and prevents the user from flipping over into the water.
The flotation sleeves 18 comprise buoyant foam encased in a fabric material (e.g., neoprene, nylon, spandex, Lycra, etc.) that is sewn to the sleeves 14 and positioned on the upper portion of a wearer's arm. Through this placement of the flotation sleeves 18, the wearer's anatomical congruity raises the user higher out of the water, increasing the wearer's freeboard, i.e., the distance between the edges of the wearer's mouth to the water. Higher placement out of the water reduces the wearer's likelihood of ingesting water. This is particularly true when a user is performing a waving action, which might be used to indicate struggle or need for assistance, but can lead to a lowering of the user's body into the water and ingestion of water. The placement of the flotation sleeves 18 high on the wearer's arm increases the wearer's freeboard while simultaneously permitting freedom of movement in the water.
In more particular embodiments, the distance between the front flotation pad 20 and the flotation sleeves 18 may be from 2.5 to 8 inches. This distance comprises the distance from the top of the front flotation pad 20 to the shirt 12's arm hole, which may be from 2 to 6 inches, and the distance from the arm hole to the edge of the flotation sleeve 18, which may be from 0.5 to 2 inches.
The shirt 12 may be made of a stretch fabric such as spandex or Lycra, which permits the wearer's anatomical shape to be accommodated by the fabric directly instead of having to rely upon the personal flotation device 10's adjustment means to secure the wearer. The stretch fabric may also provide an added benefit of providing sunburn protection for the wearer. In a preferred embodiment, the fabric provides sunburn protection of SPF 30 or above and, even more ideally, SPF 50 or higher.
The positioning of the zipper 26 and the buckle 24 on the wearer's back provides an added safety feature in that young children wearing the personal flotation device 10 cannot undo the buckle or the zipper. While a buckle 24 and a zipper 26 have been shown to secure the personal flotation device 10 on a user, it should be understood that any securing means may be used to accomplish this purpose. Numerous methods for securing a personal flotation device are known. Some examples include hook-and-loop fastener (e.g., Velcro), buttons, zippers, buckles, laces, hooks, magnets, and the like.
Although the invention has been disclosed with reference only to presently preferred embodiments, those of ordinary skill in the art will appreciate that various modifications can be made without departing from the invention. The specification and figures are, accordingly, to be regarded in an illustrative rather than a restrictive sense. As such, the present invention is defined only by the following claims and recited limitations.
This application claims the benefit of U.S. Provisional Application Ser. No. 61/873,774, filed on Sep. 4, 2013, the entire contents of which are incorporated by reference as if fully set forth herein.
| Number | Date | Country | |
|---|---|---|---|
| 61873774 | Sep 2013 | US |
