BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a personal flotation device and, in particular, to an inflatable personal flotation device.
2. Description of the Related Art
Personal flotation devices are often worn during the performance of water activities such as swimming, surfing, windsurfing, kiteboarding, kitesurfing, wakeboarding, jet skiing, boating, fishing, etc. It is desirable that the personal flotation device used during the performance of water sports be inflatable as opposed to pre-formed from a buoyant material. This is because pre-formed personal flotation devices are typically bulky and may interfere with user motion and performance. Inflatable personal flotation devices can be conveniently carried in a deflated state so as not to interfere with user motion and performance.
There accordingly remains a need for an improved inflatable personal flotation device.
SUMMARY OF THE INVENTION
There is accordingly provided a flotation device for a user. The flotation device comprises a shoulder strap and a cross strap connected to the shoulder strap. There is an inflatable bladder extending along the shoulder strap and an inflation means for inflating the inflatable bladder. The shoulder strap is configured to extend over one shoulder of the user and under a first arm of the user. The first arm of the user is opposite to the said one shoulder of the user. The cross strap is configured to extend under a second arm of the user. The cross strap may be releasably connected to the shoulder strap. The shoulder strap may be adjustable. The cross strap may be substantially horizontal when the user is standing upright.
The flotation device may include an oral inflation tube in fluid communication with the inflatable bladder. The inflatable bladder may be disposed within a pouch, and the pouch may include a flap for accessing the oral inflation tube. The oral inflation tube may include a two-way valve. Alternatively or simultaneously, the inflation device may include a compressed gas inflation system which includes a compressed gas cartridge, a cartridge inflator in fluid communication with the inflatable bladder, and a pull string which when pulled actuates the cartridge inflator to puncture the compressed cartridge resulting in compressed gas being discharged into the inflatable bladder. The pull string may be disposed within a liner. The inflatable bladder may be disposed with a pouch and the pull string may extend through the pouch.
BRIEF DESCRIPTIONS OF DRAWINGS
The invention will be more readily understood from the following description of the embodiments thereof given, by way of example only, with reference to the accompanying drawings, in which:
FIG. 1 is a front perspective view of an improved inflatable personal flotation device showing the device in a closed and deflated configuration;
FIG. 2 is a first front elevation view thereof showing the flotation device in a closed and deflated configuration;
FIG. 3 is a second front elevation thereof showing the flotation device partially cut-away in a closed and deflated configuration;
FIG. 4 is a front perspective view thereof showing the flotation device in a partially open and deflated configuration;
FIG. 5 is a third front elevation view thereof showing the flotation device in a fully open and deflated configuration;
FIG. 6 is a fourth front elevation view thereof showing the flotation device in a fully open and inflated configuration;
FIG. 7 is a rear perspective view of the personal flotation device showing the device in a closed and deflated configuration;
FIG. 8 is a first rear elevation view thereof showing the flotation device in a closed and deflated configuration;
FIG. 9 is a second rear elevation view thereof showing the flotation device partially cut-away in a closed and deflated configuration;
FIG. 10 is a rear perspective view thereof showing the flotation device in a partially open and deflated configuration;
FIG. 11 is a third rear elevation view thereof showing the flotation device in a fully open and deflated configuration;
FIG. 12 is a fourth rear elevation view thereof showing the flotation device in a fully open and inflated configuration;
FIG. 13 is a top plan view of the flotation device in a fully open and inflated configuration as viewed from a right shoulder of a user;
FIG. 14 is a top perspective view of the flotation device in a fully open and inflated configuration as viewed from a left shoulder of a user;
FIG. 15 is a front perspective view of a user wearing the flotation device showing the flotation device in a closed and deflated configuration;
FIG. 16 is a front perspective view of the user wearing the flotation device showing the flotation device in a fully open and deflated configuration;
FIG. 17 is a front perspective view of the user wearing the flotation device showing the flotation device in a fully open and inflated configuration;
FIG. 18 is a rear perspective view of the user wearing the flotation device showing the flotation device in a closed and deflated configuration;
FIG. 19 is a rear perspective view of the user wearing the flotation device showing the flotation device in a fully open and deflated configuration; and
FIG. 20 is a rear perspective view of the user wearing the flotation device showing the flotation device in a fully open and inflated configuration.
DESCRIPTIONS OF THE PREFERRED EMBODIMENTS
Referring to the drawings and first to FIGS. 1 to 14, an improved inflatable flotation device 10 is shown. The flotation device 10 includes an elongate pouch 12 and a cross strap 14. In this example, and as best shown in FIG. 1, a first end 16 of the cross strap 14 is fixedly connected to a loop-shaped shoulder strap 26 on which the pouch 12 is disposed. A second end 18 of the cross strap 14 is releasably connected to a flap 15 of the shoulder strap 26 which extends along a longitudinal edge 17 of the pouch 12. In this example, a fastener or mating connection in the form of a buckle 20 connects the second end 18 of the cross strap 14 to the shoulder strap 26. The buckle 20 allows for adjustment of the flotation device 10. In other examples, the cross strap may be either fixedly or releasably connected to the shoulder strap at both ends. The cross strap 14 extends substantially horizontal when a user is standing upright as shown in FIGS. 15 to 20. Other means may also be employed to releasably secure the strap to the pouch.
Referring back to FIG. 1, the pouch 12 is provided with a zipper 22 extending along a length thereof which allows the pouch 12 to be in a closed configuration as best shown in FIGS. 1 and 7. In other examples, other means such as fasteners in the form of hook and loop fastener strips sold under the trademark VELCRO® may be used to close the pouch 12. The pouch 12 houses an inflatable bladder 24 as best shown in FIGS. 3 and 9. When the bladder 24 is deflated the bladder fits snugly in the pouch 12. Unzipping the zipper 22 allows the pouch 12 to be in an open configuration exposing the bladder 24 as best shown in FIGS. 5 and 11.
FIGS. 13 and 14 best show the loop-shaped shoulder strap 26 on which the pouch 12 is disposed. As shown in FIGS. 13 and 14, in this example, the pouch 12 does not extend completely about the shoulder strap 26. Rather ends 11 and 13 of the pouch 12 are spaced apart. End portions 27 and 29 of the shoulder strap 26 are free of the pouch 12. A fastener or mating connection in the form of a buckle 31 connects the end portions 27 and 29 of the shoulder strap 26 together and allows for adjustment of the shoulder strap 26. In other examples, the shoulder strap may be endless.
In this example, the flotation device 10 is provided with two inflation means or inflators. There is an oral inflation tube 28, best shown in FIG. 3, and a compressed gas inflation system 30, best shown in FIG. 11. The oral inflation tube 28 is in fluid communication with the bladder 24 and is provided with a two way valve 25 which is shown in FIG. 3 only. The two way valve 25 allows a user to manually inflate and deflate the bladder 24. In this example, the oral inflation tube 28 may be accessed by lifting an access flap 19 on the elongate pouch 12 as best shown in FIG. 2. Referring back to FIG. 11, the compressed gas inflation system 30 includes a compressed gas (CO2 in this example) cartridge 32, a cartridge inflator 33 in fluid communication with the bladder 24, and a pull string 34 which when pulled actuates the cartridge inflator to puncture the compressed gas cartridge. This results in the discharge of gas into the bladder 24 and the inflation of the bladder. There is a handle 36 at a free end of the pull string 34 to facilitate pulling of the pull string. The pull string 34 is disposed in a sheath in the form of a polyethylene liner 35. The liner 35 cushions a user's shoulder from the pull string, particularly when the pull string 34 is pulled. In other examples other inflation means may be provided, for example, foam compressed in a canister may be used to inflate the bladder.
In use, and as shown in FIGS. 15 and 17, a user 50 positions the shoulder strap 26 to extend over his shoulder 52 and under his arm 54 opposite to said shoulder 52. The cross strap 14 is thereby positioned under the other arm 56 of the user. The cross strap 14 and is connected to the pouch 12 by the buckle 20. This secures the flotation device 10 to the user in an unobtrusive manner and the flotation device 10 does not interfere with user motion.
To deploy the flotation device 10 using the oral inflation tube 28 the user 50 may access the oral inflation tube through the access flap 19 as shown in FIG. 15 or the user may unzip the pouch 12 to access the oral inflation tube 28 as shown in FIG. 16. The bladder 22 may then be orally inflated to the state shown in FIGS. 17 and 20. The inflating bladder 24 automatically unzips the zipper 22 if the bladder is inflated by accessing the oral inflation tube 28 through the access flap 19.
To deploy the flotation device 10 using the compressed gas inflation system 30, the user 50 simply pulls the pull string 34 which extends through the pouch 22 as best shown in FIG. 1. The pull string 34 actuates the cartridge inflator 33 to puncture the compressed gas cartridge 33. This results in the discharge of gas into the bladder 24 and the inflation of the bladder. The inflating bladder 24 automatically unzips the zipper 22.
The user 50 is not required to unzip the zipper 22 prior to deploying the flotation device 10 using the compressed gas inflation system 30. This is because a portion 22a of the zipper 22, best shown in FIGS. 9 to 11, is weakened and will burst open in response to the force from the inflating bladder. For example, the weakened portion 22a of the zipper 22 may be a QuickBurst™ zipper which will burst open in response to the force from the inflating bladder 24. There is a protective flap 23 which covers the QuickBurst™ zipper as shown in FIGS. 7 and 8.
It will be understood by a person skilled in the art that in other examples the flotation device may include multiple bladders and the flotation device may be constructed from a variety of materials including but not limited to nylon, neoprene and polyurethane.
It will also be understood by a person skilled in the art that many of the details provided above are by way of example only, and are not intended to limit the scope of the invention which is to be determined with reference to the following claims.
Patent Application
20120252291
