Flotation foam lined pontoon log

Details Flotation foam lined pontoon log Flotation foam lined pontoon log

1995-09-29

1996-11-19

Avila, Stephen

Ships

Displacement-type hull

Multiple hulls

114357, B63B 100

Patent

active

055752314

ABSTRACT:
A foam lined pontoon log in which polyurethane flotation foam is sprayed onto the interior surfaces of the pontoon log and adheres to the interior surfaces of the pontoon log. The flotation foam is built up to a desired thickness, but does not completely fill the interior of the pontoon log. The foam lining of the pontoon log interior surface provides the pontoon log with improved resistance to water leakage through the outer shell of the log, improved structural rigidity, and improved sound dampening. The pontoon log may have a nose cone section at its bow end with splash guard plates. The interior of the nose cone section is filled with flotation foam to a height above the splash guard plates to prevent water ingress associated with pin-sized holes resulting from welding of the splash guard plates to the pontoon log body.

REFERENCES:
patent: 4046091 (1977-09-01), Lomas, III et al.
patent: 4348972 (1982-09-01), Parsons
patent: 4738215 (1988-04-01), McMahon
patent: 4827859 (1989-05-01), Powell
patent: 5259330 (1993-11-01), Faulkner

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