Inflatable, noncollapsible, personal flotation device
First Claim
Patent Images
1. A flotation device comprising:
- a bag made of a tightly woven fiber of a group of synthetic long-chain polymeric amides with recurring amide groups forming a flotation chamber;
means for injecting polyisocyanate (OCN--R--NCO) and polyol (HO--R'"'"'--OH) into the bag to form an evenly distributed layer of pliant foam material within the flotation chamber after the chemicals react;
an aluminized polyester film material between said bag and a wearer to protect a user from an exothermic reaction resulting from the chemicals reacting within the bag; and
means for attaching the bag to the user.
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Accused Products
Abstract
The inflatable, non-collapsible, flotation device (INCFD) utilizes foam mng chemicals within a flotation chamber where the materials react and harden to form a layer of pliant foam, such as polyurethane. The foam, during reaction, conforms with the shape of the wearer and hardens to provide both flotation and physical protection from exterior objects.
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Citations
11 Claims
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1. A flotation device comprising:
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a bag made of a tightly woven fiber of a group of synthetic long-chain polymeric amides with recurring amide groups forming a flotation chamber; means for injecting polyisocyanate (OCN--R--NCO) and polyol (HO--R'"'"'--OH) into the bag to form an evenly distributed layer of pliant foam material within the flotation chamber after the chemicals react; an aluminized polyester film material between said bag and a wearer to protect a user from an exothermic reaction resulting from the chemicals reacting within the bag; and means for attaching the bag to the user. - View Dependent Claims (2)
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3. A flotation devices comprising:
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a bag forming a flotation chamber; means for injecting a plurality of chemicals into the bag to form an evenly distributed layer of pliant material within the flotation chamber after the chemicals react; an aluminized polyester film material between said bag and a wearer to protect the wearer from an exothermic reaction resulting from the chemicals reacting within the bag; and means for attaching the bag to the user.
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4. A flotation device comprising:
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a bag forming a flotation chamber; means for injecting a plurality of chemicals into the bag to form an evenly distributed layer of pliant material within the flotation chamber after the chemicals react; an aluminized polyester film material between said bag and a wearer to protect the wearer from an exothermic reaction resulting from the chemicals reacting within the bag; means for attaching the bag to the user; and a tubular distribution device with openings at preselected points along the tubular device that evenly distribute the rigid foam precursor material generated by the chemical reaction within the flotation chamber.
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5. A flotation device comprising:
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a bag forming a flotation chamber; means for injecting a plurality of chemicals into the bag to form an evenly distributed layer of pliant material within the flotation chamber after the chemicals react; an aluminized polyester film material between said bag and a wearer to protect the wearer from an exothermic reaction resulting from the chemicals reacting within the bag; means for attaching the bag to the user; and means for attaching an external rescue device to the bag for lifting the user.
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6. A flotation device comprising:
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a bag forming a flotation chamber; means for injecting a plurality of chemicals into the bag to form an evenly distributed layer of pliant material within the flotation chamber after the chemicals react; an aluminized polyester film material between said bag and a wearer to protect the wearer from an exothermic reaction resulting from the chemicals reacting within the bar; means for attaching the bag to the user; and a metallic ring attached to the bag for lifting the user.
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7. A flotation device comprised of:
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a water repellant bag forming a flotation chamber; means for mixing chemical reagents into the bag to form a pliant foam; means for distributing the pliant foam formed by the mixing of the chemical reagents equally to all portions of the flotation chamber; an aluminized polyester film between said bag and a user to protect the user from an exothermic reaction of the polyurethane precursor; means for securing the bag to a user; and means for attaching an external rescue device to the bag for lifting the user. - View Dependent Claims (8, 9, 10)
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11. A method for providing buoyancy to an object comprising the steps of:
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injecting polyisocyanate (OCN--R--NCO) and polyol (HO--R'"'"'--OH) into a bag made of a tightly woven fiber of a group of synthetic long-chain polymeric amides with recurring amide groups so as to form a pliant foam when the chemicals react thereby filling the bag with a pliant, uncollapsable foam; and placing an aluminized polyester film material around the bag to protect the object from an exothermic reaction resulting from the chemicals reacting within the bag.
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Specification