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US4796555A Expired / Lapsed US ⏱️ 0.0 years remaining

Knockdown type inflatable sailboat

Assignee: Individual
•
Filing: 1987-09-29
•
Granted: 1989-01-10
•
Expires: 2007-09-29
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Abstract

Abstract A knockdown type inflatable sailboat which has a carrier system composed of two inflatable rafts assembled with a plurality of U-like fastening elements of a hull assembly and which uses a power system located on the bow with a main mast to support a sail which is further fastened by means of a rod and two riggings, and a steering system composed of rudders and water breakers.

Inventors

  • 👤 Herry Chang

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 14:37
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06; B63B7/08; B63B7/085; B63H; B63H9/00; B63H9/04

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 219 words
A knockdown type inflatable sailboat comprising: twin inflatable, elongated mutually spaced rafts having sides and fore and aft ends; breakwater means disposed beneath said rafts for stabilizing said sailboat; stress elimination system including a plurality of U-shaped fastening rods disposed on the upper surface of said rafts in a mutually spaced relationship with the ends thereof depending on opposite sides of said rafts; stress distribution means coupling the ends of each U-shaped rod to a corresponding side portion of said raft whereby weight disposed on said U-shaped rods will be carried by the sides of said rafts said means comprising a plurality of mutually spaced plates, each plate affixed to a side of a raft adjacent an end portion of each of said U-shaped rods and a plurality of sleeves, each mounted on one of said plates surrounding an end each of said U-shaped rods; at least one stress rod extending substantially the length of each raft along the upper surface thereof interconnecting respective U-shaped fastening rods, and at least three connecting rods extending laterally between said rafts connecting a pair of U-shaped rods thereon; rudder means carried by said sailboat at the aft end of aid rafts for steering said sailboat; sail means including a mast mounted on a connecting rod connecting the fore ends of said rafts.
Claim 2
Dependent Claim 219 words
A knockdown type inflatable sailboat comprising: twin inflatable, elongated mutually spaced rafts having sides and fore and aft ends; breakwater means disposed beneath said rafts for stabilizing said sailboat; stress elimination system including a plurality of U-shaped fastening rods disposed on the upper surface of said rafts in a mutually spaced relationship with the ends thereof depending on opposite sides of said rafts; stress distribution means coupling the ends of each U-shaped rod to a corresponding side portion of said raft whereby weight disposed on said U-shaped rods will be carried by the sides of said rafts said means comprising a plurality of mutually spaced plates, each plate affixed to a side of a raft adjacent an end portion of each of said U-shaped rods and a plurality of sleeves, each mounted on one of said plates surrounding an end each of said U-shaped rods; at least one stress rod extending substantially the length of each raft along the upper surface thereof interconnecting respective U-shaped fastening rods, and at least three connecting rods extending laterally between said rafts connecting a pair of U-shaped rods thereon; rudder means carried by said sailboat at the aft end of aid rafts for steering said sailboat; sail means including a mast mounted on a connecting rod connecting the fore ends of said rafts.
Claim 3
Dependent Claim 11 words
The sailboat of claim 1 wherein said rafts are kidney shaped.
Claim 4
Dependent Claim 22 words
The sailboat of claim 2 when said breakwater means includes a single breakwater disposed depending from a connecting rod between said rafts.
Claim 5
Dependent Claim 19 words
The sailboat of claim 1 wherein said rudder means includes twin rudders, one disposed behind each of said rafts.
Claim 6
Dependent Claim 16 words
The sailboat of claim 1 wherein each raft comprises interconnected pontoons interconnected along a longitudinal side.
Claim 7
Dependent Claim 25 words
The sailboat of claim 1 wherein said rudder means comprises a single rudder disposed to depend from a connecting rod and located between said rafts.
Claim 8
Dependent Claim 301 words
A knockdown type inflatable sailboat comprising: twin inflatable, elongated mutually spaced rafts having sides and fore and aft ends; breakwater means disposed beneath said rafts for stabilizing said sailboat; stress elimination system including a plurality of U-shaped fastening rods disposed on the upper surface of said rafts in a mutually spaced relationship with the ends thereof depending on opposite sides of said rafts; stress distribution means coupling the ends of each U-shaped rod to a corresponding side portion of said raft whereby weight disposed on said U-shaped rods will be carried by the sides of said rafts said means comprising a plurality of mutually spaced plates, each plate affixed to a side of a raft adjacent an end portion of each of said U-shaped rods and a plurality of sleeves, each mounted on one of said plates surrounding an end each of said U-shaped rods; at least one stress rod extending substantially the length of each raft along the upper surface thereof interconnecting respective U-shaped fastening rods, and a plurality of connecting rods extending laterally between said rafts each releasably connecting a pair of U-shaped rods thereon; a deck extending between and releasably connected to said stress rods; each U-shaped rod mounting a laterally opening sleeve on the upper surface thereof which receives an end of a connecting rod therein so that when said deck is connected to said stress rods said connecting rod end are retained in said sleeves, and when said deck is loaded the stress rods will be urged together and the ends of the connecting rods will be tightly retained in the sleeves; rudder means carried by said sailboat at the aft end of said rafts for steering said sailboat; sail means including a mast mounted on a connecting rod connecting the fore ends of said rafts.
Claim 9
Dependent Claim 301 words
A knockdown type inflatable sailboat comprising: twin inflatable, elongated mutually spaced rafts having sides and fore and aft ends; breakwater means disposed beneath said rafts for stabilizing said sailboat; stress elimination system including a plurality of U-shaped fastening rods disposed on the upper surface of said rafts in a mutually spaced relationship with the ends thereof depending on opposite sides of said rafts; stress distribution means coupling the ends of each U-shaped rod to a corresponding side portion of said raft whereby weight disposed on said U-shaped rods will be carried by the sides of said rafts said means comprising a plurality of mutually spaced plates, each plate affixed to a side of a raft adjacent an end portion of each of said U-shaped rods and a plurality of sleeves, each mounted on one of said plates surrounding an end each of said U-shaped rods; at least one stress rod extending substantially the length of each raft along the upper surface thereof interconnecting respective U-shaped fastening rods, and a plurality of connecting rods extending laterally between said rafts each releasably connecting a pair of U-shaped rods thereon; a deck extending between and releasably connected to said stress rods; each U-shaped rod mounting a laterally opening sleeve on the upper surface thereof which receives an end of a connecting rod therein so that when said deck is connected to said stress rods said connecting rod end are retained in said sleeves, and when said deck is loaded the stress rods will be urged together and the ends of the connecting rods will be tightly retained in the sleeves; rudder means carried by said sailboat at the aft end of said rafts for steering said sailboat; sail means including a mast mounted on a connecting rod connecting the fore ends of said rafts.
Claim 10
Dependent Claim 11 words
The sailboat of claim 7 wherein the rafts are kidney shaped.
Claim 11
Dependent Claim 22 words
The sailboat of claim 7 wherein said breakwater means includes a single breakwater disposed depending from a connecting rod between said rafts.
Claim 12
Dependent Claim 19 words
The sailboat of claim 7 wherein said rudder means includes twin rudders, one disposed behind each of said rafts.
Claim 13
Dependent Claim 16 words
The sailboat of claim 7 wherein each raft comprises interconnected pontoons interconnected along a longitudinal side.
Claim 14
Dependent Claim 25 words
The sailboat of claim 7 wherein said rudder means comprises a single rudder disposed to depend from a connecting rod and located between said rafts.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-01-10 1992-07-11 1993-01-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-01-10 1996-07-11 1997-01-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-01-10 2000-07-11 2001-01-10 $7700.00 Window Closed / Lapsed

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