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US4337543A Expired / Lapsed US ⏱️ 0.0 years remaining

Collapsible trimaran boat

Assignee: Individual
•
Filing: 1980-10-23
•
Granted: 1982-07-06
•
Expires: 2000-10-23
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Abstract

Abstract A trimaran type boat having center, port, and starboard elongated floats which are hinged together at corresponding juxtaposed side edges to enable the port and starboard floats to be pivoted between an operatable position in which the floats are transversely oriented to accommodate flotation of the boat and a collapsed position in which the port and starboard floats are folded into the center float to reduce the overall width of the boat without appreciably increasing the height so as to facilitate its storage and transport.

Inventors

  • 👤 William R. Van Ulzen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 17:14
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/14; B63B7/00; B63B7/02; B63B2001/145; B63B34/00

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 238 words
A collapsible trimaran-type boat comprising three parallel individual longitudinal float sections, each float section having two tapering sides and a top surface, said float sections constituting a center section of a generally inverted isosceles triangular cross-sectional configuration and port and starboard sections each of a generally right angle triangular cross-sectional configuration, one side of each port and starboard float section being the hypotenuse of said right angle triangular cross-sectional configuration, hinge components connecting said center float section at one upper corner edge of its top surface to said starboard float section at its top surface at the intersection of said one side thereof, other hinge components connecting said center float section at the opposite upper corner edge to said port float section at its top surface at the intersection of said one side thereof, said port and starboard float sections being pivotal relative to said center float section about said hinge components between a collapsed position where the hypotenuse of each port and starboard float section is juxtaposed with said-side of said center float section resulting in said boat at its float sections having a generally rectangular configuration and an operative floating position where said float section top surfaces are generally planar and said hypotenuses of said port and starboard float sections are angularly displaced from said sides of said center float section, and means for securing said port and starboard float sections in their operative floating position.
Claim 2
Dependent Claim 238 words
A collapsible trimaran-type boat comprising three parallel individual longitudinal float sections, each float section having two tapering sides and a top surface, said float sections constituting a center section of a generally inverted isosceles triangular cross-sectional configuration and port and starboard sections each of a generally right angle triangular cross-sectional configuration, one side of each port and starboard float section being the hypotenuse of said right angle triangular cross-sectional configuration, hinge components connecting said center float section at one upper corner edge of its top surface to said starboard float section at its top surface at the intersection of said one side thereof, other hinge components connecting said center float section at the opposite upper corner edge to said port float section at its top surface at the intersection of said one side thereof, said port and starboard float sections being pivotal relative to said center float section about said hinge components between a collapsed position where the hypotenuse of each port and starboard float section is juxtaposed with said-side of said center float section resulting in said boat at its float sections having a generally rectangular configuration and an operative floating position where said float section top surfaces are generally planar and said hypotenuses of said port and starboard float sections are angularly displaced from said sides of said center float section, and means for securing said port and starboard float sections in their operative floating position.
Claim 3
Dependent Claim 60 words
The boat of claim 1 wherein said port and starboard float section securing means includes parts carried by each of the float sections at their respective top surfaces which abut as the port and starboard float sections are shifted into their operative position to restrict further opening pivotal movement of said port and starboard float sections about said hinge components.
Claim 4
Dependent Claim 19 words
The boat of claim 2 wherein said abutment parts constitute a rail carried by said float section top surfaces.
Claim 5
Dependent Claim 54 words
The boat of claim 3 and a securement member constituting a component of said port and starboard float section securing means removably connected across said abutment parts when the port and starboard float sections are in their operative position to prevent further movement of the port and starboard float sections about said hinge components.
Claim 6
Dependent Claim 18 words
The boat of claim 1 and a cockpit formed in said top surface of said center float section.

References Cited (Backward Citations)

US3126558A Cited
US2495412A Cited
US3108295A Cited
US3193851A Cited
US3485198A Cited
US3877094A Cited
US3812805A Cited
US3929085A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-07-05 1986-01-04 1986-07-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-07-05 1990-01-04 1990-07-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-07-05 1994-01-04 1994-07-06 $7700.00 Window Closed / Lapsed

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