Ships – Building – Canal and ferry boats
Patent
1977-07-11
1979-01-30
Blix, Trygve M.
Ships
Building
Canal and ferry boats
114 61, 114 39, B63B 700
Patent
active
041364147
ABSTRACT:
A high performance portable knockdown boat structure having one or more unique inflatable hull structures in the form of a relatively low pressure envelope which tapers from its mid-length to its opposite ends, and is provided with a sectionalized light weight reinforcing tubular member which can be inserted endwise into a longitudinally extending surface sleeve. The reinforcing member is easily inserted into the sleeve when the envelope is deflated, and upon inflation of the envelope will be retained and anchored against removal. The unique envelope may be readily embodied in boats of the single hull type with or without an outrigger, as well as in boats having more than one hull, and particularly to provide a unique, lightweight, high performance catamaran.
As a catamaran, a pair of the inflatable envelopes are releasably interconnected by means of forward, mid and aft disconnectible bridging frames to a rigid longitudinal frame structure positioned between the inflatable envelopes, this rigid frame being fitted with the boat mast and rudder.
REFERENCES:
patent: 3056980 (1962-10-01), Holladay
patent: 3304899 (1967-02-01), Weatherly
patent: 3473502 (1969-10-01), Wittkamp
patent: 3812805 (1974-05-01), Forssell
patent: 3841251 (1974-10-01), Larson
patent: 3902443 (1975-09-01), McDougall
Blix Trygve M.
Keen D. W.
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