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US 4,223,620 AGranted
Vessel-catamaran type
OwnerJean-Paul Dudouytinventor
Life of this patent
Estimating the term…
Abstract
A catamaran type vessel has two parallel hulls and a metal tubular framework linking the hulls. Rigid members extend longitudinally within the hulls and have extensions projecting from the upper surfaces of the hulls for coupling with the framework. This reduces hull stresses and allows lighter hulls. Expanded plastics foam may be used to hold the rigid members in the hulls. The hulls may be inclined inwardly to give an asymmetrical catamaran type configuration.
Claims9
A vessel of the catamaran type comprising two substantially parallel hulls each forming a caisson having a base and top surface;
- a frame of U-shaped configuration for interconnecting the two hulls, said frame including a pair of substantially parallel spaced-apart limb portions and an arcuately shaped central portion with each of said limb portions extending fore and aft above a respective one of said caissons, transversely extending longitudinally spaced means for interconnecting said limb portions, two rigid members, each one of U-shaped configuration extending longitudinally fore and aft along the bottom of each respective hull;
- each of said rigid members including an upstanding extension at each of its ends, the extensions extending from the base to the top surface of the respective hull;
- said frame interconnecting the hulls by engagement of said extensions with a respective limb portion of said frame.
Dependencies are inferred from the claim text.