1976-03-04
1976-11-02
Blix, Trygve M.
Ships
Fenders
B63B 5902
Patent
active
039889971
ABSTRACT:
An inflatable, weighted boat fender is disclosed which is particularly suitable for protecting the hull of the boat during passage of the boat through locks. The fender comprises a sealed, flexible, fluidtight bag formed from two elongated sheets of flexible fluidtight material sealed together about their peripheries and having a transverse seal which forms first and second sealed compartments. The transverse seal is located closer to one end of the bag than the other. First and second ports are respectively provided in the first and second compartments for admitting air to the first compartment and for admitting a heavier substance such as water to the second compartment. Upon inflation, the inflated thickness of the first compartment is greater than the inflated thickness of the second compartment so that the first compartment, which contains the air, is capable of absorbing the shock between the boat hull and the wall of the lock, while the second compartment is protected against abrasion between the lock wall and the hull by the thickness of the air-filled first compartment. The liquid compartment serves to weight the bag so that it is not blown about and so that it retains its protecting position with respect to the hull.
REFERENCES:
patent: 1361902 (1920-12-01), Porteous
patent: 2028060 (1936-01-01), Gilbert
patent: 2960055 (1960-11-01), Tomek
patent: 3292566 (1966-12-01), Russell
Blix Trygve M.
Goldstein Stuart M.
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