IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0348848
(1982-02-16)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
8 인용 특허 :
0 |
초록
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A hand-carryable flying sailboat for kite and water sports in which a lightweight rigid frame supports an airfoil-defining fabric stretched over the frame for flying and a sail assembly is carried dorsally by the frame and enables sail propulsion of the craft, whereby the craft can perform in the wa
A hand-carryable flying sailboat for kite and water sports in which a lightweight rigid frame supports an airfoil-defining fabric stretched over the frame for flying and a sail assembly is carried dorsally by the frame and enables sail propulsion of the craft, whereby the craft can perform in the water or in the air, alternately and continually.
대표청구항
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1. Hand-carryable flying sailboat for kite and water sports, comprising a rigid, lightweight frame, kite string and bridle attachment means carried by said frame, and including port and starboard hull members and fore and aft crossbars extending therebetween, sheet material supported by said frame i
1. Hand-carryable flying sailboat for kite and water sports, comprising a rigid, lightweight frame, kite string and bridle attachment means carried by said frame, and including port and starboard hull members and fore and aft crossbars extending therebetween, sheet material supported by said frame in lifting surface-defining relation, and an upright sail assembly cooperating with said frame means to maintain a lifting surface shape in said sheet material; said frame, sail and sheet material being relatively proportioned in weight, shape and area such that the sailboat sails on water and flys in the air for use as a kite. 2. Hand-carryable flying sailboat according to claim 1, in which said hull members comprise open-top hull-shaped floats of a length greater than said sheet material. 3. Hand-carryable flying sailboat according to claim 2, in which said hull members terminate in rudder-shaped fins. 4. Hand-carryable flying sailboat according to claim 1, in which said crossbars comprise lightweight, rigid dowels, said hull members defining opposed dowel retaining means, whereby said dowels are separably connectible to said hull members in parallel relation. 5. Hand-carryable flying sailboat according to claim 4, in which said hull members comprise open-top hull-shaped plastic shells having upwardly divergent inner and outer walls, and including also means defining coaxial dowel-retaining apertures on said inner and outer walls, whereby a dowel end is connectible to a hull member at said apertures at both the inner and outer walls of said hull member. 6. Hand-carryable flying sailboat according to claim 5, in which said hull member inner and outer walls have in their outer surfaces series of parallel ribs formed therein at an acute angle to the horizontal. 7. Hand-carryable flying sailboat for kite and water sports, comprising a rigid, lightweight frame defining a locus of bridle attachment and including port and starboard hull members and fore and aft dowel crossbars extending therebetween, the relatively forward of said cross bar dowels providing anchor points for a kite bridle, said hull members defining guides for said bridle forward of said anchor points, sheet material supported by said frame in lifting surface-defining relation, and an upright sail assembly cooperating with said frame means to maintain a lifting surface shape in said sheet material during flight in the air; said sail, frame and sheet material being relatively proportioned in weight, shape and area such that the sailboat sails on water and flys in the air. 8. Hand-carryable flying sailboat according to claim 1, in which said sheet material comprises a tough flexible water-resistant fabric. 9. Hand-carryable flying sailboat according to claim 8, in which said sheet material fabric is generally rectangular, and includes fore and aft edge margins respectively connected to said fore and aft crossbars, and free side edge margins. 10. Hand-carryable flying sailboat according to claim 9, including also a longitudinal bar coupled to said crossbars defining the longitudinal distance therebetween, and in which said sheet material fabric is of greater longitudinal extent than the longitudinal distance between said crossbars, whereby said sheet material fabric maintains an airfoil shape responsive to air flow thereover in sailboat flight. 11. Hand-carryable flying sailboat according to claim 10, in which the longitudinal extent of said sheet material is adjustable between said crossbars by partially rolling up said sheet material on a crossbar. 12. Hand-carryable flying sailboat according to claim 11, including also crossbar retaining means on said hulls, said crossbars being separably retainable by said retaining means in sheet material fabric unrolling blocking relation. 13. Hand-carryable flying sailboat according to claim 12, in which said fore and aft sheet material fabric edge margins define crossbar dowel-receiving loops. 14. Hand-carryable flying sailboat for kite and water sports, comprising a rigid, lightweight frame defining a locus of bridle attachment and including port and starboard hull members and fore and aft crossbars extending therebetween, sheet material supported by said frame in lifting surface-defining relation, and an upright sail assembly cooperating with said frame means to maintain a lifting surface shape in said sheet material; said frame, sail and sheet material being relatively proportioned in weight, shape and area such that the sailboat sails on water and flys in the air, and in which said sail assembly comprises a mast at right angle to the plane of said hull members and footed on said frame at said fore crossbar, a boom normal to the mast and overlying said sheet material, a sail stretched between said mast and boom, and stays extending upward from said hull members to support said mast in position in tension against said forward crossbar, whereby said fore crossbar is centrally slightly downwardly bowed at the leading edge of the lifting surface-defining sheet material in dihedral defining relation. 15. Hand-carryable flying sailboat according to claim 14, in which said sail comprises flexible water-resistant fabric, said mast and boom are dowels, and including also means defining dowel-retaining apertures for securing said mast to said fore crossbar and said boom to said mast. 16. Hand-carryable flying sailboat for kite and water sports, comprising lifting surface-defining sheet material extending fore and aft and centered on and parallel with the sailboat longitudinal axis, frame means including transversely spaced longitudinally disposed port and starboard hull members, a longitudinal axial bar dowel, and longitudinally spaced, transversely disposed crossbars connected to said longitudinal dowel and said hull members for supporting said sheet material, and a vertically disposed, longitudinal axis aligned sail assembly including a sail adapted to drive said sailboat forward in water, a mast, boom and stays supporting said sail and arranged to tension the frame means to centrally slightly downwardly bow the relatively forward of said crossbars to maintain a lifting surface shape in said sheet material during flight in the air, said hull members having a weight, shape and relative spacing providing buoyancy keeping said sailboat afloat and aright while sailing in water, said sheet material lifting surface having an area and shape providing flying lift to said said boat responsive to air flow over said sheet material. 17. Hand-carryable flying sailboat according to claim 16, in which said hull members comprise upwardly open synthetic organic plastic, hull-shaped floats located outboard of said sheet material in a lower parallel plane extended fore and aft of said sheet material. 18. Hand-carryable flying sailboat according to claim 17, in which said crossbars and said longitudinal bar comprise lightweight, rigid dowels arranged in an H shape, said hull members defining opposed dowel retaining means, whereby said dowels are separably retainable on said hull members to separate upon crash impact preferentially to breaking of the hull members. 19. Hand-carryable flying sailboat according to claim 18, in which said hull members have upwardly divergent inner and outer walls, and including also means defining dowel retainers on said inner and outer walls, whereby said crossbar dowel ends are retainable on said hull members. 20. Hand-carryable flying sailboat according to claim 19, in which said inner and outer hull member walls have in their outer surfaces series of parallel ribs formed therein at an acute angle to the horizontal. 21. Hand-carryable flying sailboat according to claim 19, including also a kite bridle, and in which the relatively forward one of said crossbar dowels provides anchor points for said kite bridle, said hull members defining guides for said bridle forward of said anchor points. 22. Hand-carryable flying sailboat according to claim 19, in which said lifting surface-defining sheet material comprises a tough flexible water-resistant fabric. 23. Hand-carryable flying sailboat according to claim 22, in which said sheet material fabric lies above said crossbar and longitudinal bar dowels, is generally rectangular, and includes fore and aft edge margins respectively connected to said fore and aft crossbar dowels, and free side edge margins. 24. Hand-carryable flying sailboat according to claim 23, in which said sheet material fabric is of greater length than the longitudinal distance between said crossbar dowels along the longitudinal axis of said sailboat, whereby said sheet material fabric maintains an airfoil shape responsive to air flow thereover in sailboat flight. 25. Hand-carryable flying sailboat according to claim 24, in which the longitudinal extent of the sheet material is adjustable between said crossbar dowels by partially rolling up said sheet material on one of said crossbar dowels. 26. Hand-carryable flying sailboat according to claim 25, including also crossbar securing means on said hulls, said crossbars being separably securable by the securing means in sheet material fabric unrolling blocking relation. 27. Hand-carryable flying sailboat according to claim 26, in which said fore and aft sheet material fabric edge margins define dowel receiving loops. 28. Hand-carryable flying sailboat according to claim 27, in which said sail assembly comprises a mast at a right angle to the plane of said hull members, a right angle footing said mast to said frame fore crossbar, a boom supported by a bracket normal to the mast, a sail stretched between said mast and boom, and stays extending upward from and anchored at said crossbar dowels at said hull members supporting said mast in position in tension against said forward crossbar, whereby said fore crossbar is centrally slightly downwardly bowed at the leading edge of said lifting surface-defining sheet material. 29. Hand-carryable flying sailboat according to claim 28, in which said sail comprises flexible water resistant fabric, said mast and boom are dowels, and including also brackets defining dowel retainers securing the mast to the crossbar and the boom to the mast. 30. The combination of a hand-carryable flying sailboat bracket and kite dowels, said bracket retaining said dowels securably for flight, said bracket comprising a generally planar, triangular perimeter, molded plastic web formed by plural, apex-intersected, dissimilar size triangles, tubular sleeves defined by said triangles to be open-walled in the plane of the web, said dowels being received in passing relation by said sleeves beyond the plane of said web and a side edge margin-stiffening rib between said sleeve open wall and said web perimeter. 31. Hand-carryable flying sailboat for kite and water sports, comprising a lifting surface-defining sheet material fabric stretched between a pair of transversely disposed dowels and removably secured thereto by loops at the fore and aft edge margins of said fabric, a pair of formed plastic hulls having a deep V cross-section and upwardly diverging inner and outer walls, said hulls having opposed separately formed dowel retainers in coaxial relation with said dowels for securing the dowels separably to the hulls at the hull inner and outer walls, a longitudinal axis aligned dowel bar coupled between said transversely disposed dowels and forming therewith and with said hulls a rigid frame structure with said lifting surface fabric centrally thereabove and in an elevated parallel plane relative to the plane of said hulls; a sail assembly adapted to drive the sailboat forward on the water and comprising an upright mast dowel, a boom dowel normal to said mast secured by a bracket, a separately formed right angle fitting securing said mast to said forward dowel, rigging tensioning said mast against the forward one of said transversely disposed dowels in dowel-downward-deflecting relation, and a sail stretchedly secured to said mast and boom; said hulls extending forwardly beyond said fabric and defining forward of said forward dowel a guide aperture for a kite bridle, said forward dowel defining port and starboard bridle anchor points on the hull centerlines respectively.
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