A self-inflating swimming aid comprises a flotation member having a core of open cell foam closely encompassed in a waterproof casing of impermeable plastic. An inflation valve allows fluid communication with the foam core through the cover. The device is inflated by opening the valve so that the foam core may assume its expanded shape, and is deflated by compressing the foam core to force the air out of the flotation member through the valve. Once the flotation member is deflated to a desirable size and shape, the valve may be closed and the device may be folded or rolled up for storage.
SELF-INFLATING SWIM AID
01.11.2018
Patent
Elektronische Ressource
Englisch