A kick down and kick up catamaran assembles by hand with holes in main spar and stern spar ends receiving threaded rods extending vertically from the side-by-side hulls, secured in place with hand knobs. A bow spar with a line to the mast lifts the mast to vertical and is then secured between the h
A kick down and kick up catamaran assembles by hand with holes in main spar and stern spar ends receiving threaded rods extending vertically from the side-by-side hulls, secured in place with hand knobs. A bow spar with a line to the mast lifts the mast to vertical and is then secured between the hulls. A mast operationally rests with its proximal end alongside the main spar, held in place by an easily removable cord that wraps the main spar and slips into a mast slot opening at the mast proximal end. A trampoline stretches between the main and stern spars providing a platform on which the operator sits, tightened by a plurality of adjustable straps between the trampoline and the stern spar.
대표청구항▼
Having described the invention, what is claimed is as follows: 1. A catamaran having horizontal left and right hulls connected in parallel, a main sail on a mast, a jib, and a rudder assembly, the improvement comprising, a main spar releasably horizontally connected centrally between the two hulls,
Having described the invention, what is claimed is as follows: 1. A catamaran having horizontal left and right hulls connected in parallel, a main sail on a mast, a jib, and a rudder assembly, the improvement comprising, a main spar releasably horizontally connected centrally between the two hulls, the mast removably attached thereto at a mast proximal end, a stern spar releasably connected horizontally between the two hulls at the catamaran astern from the main spar, a platform between the main spar and the stern spar, and wherein the rudder assembly comprises a rudder hingedly attached removably to each hull stem with a tiller extending from each rudder toward the rear spar, adapted to move the rudder on a vertical axis in steering the catamaran, and a tiller arm interconnecting the tillers at their distal end such that lateral movement of the tiller arm causes the rudders to move on their vertical axes, a bow spar releasably connected horizontally between the two hulls at the catamaran forward from the main spar, wherein the mast includes a vertical slot opening at the mast proximal end and further comprising a cord in a closed loop attaching the mast proximal end to the main spar by wrapping a lead portion of the loop from a main spar mast side around the main spar and back to the main spar mast side passing through a tail portion of the loop and then through the mast slot, the lead portion of the loop being releasably fastened in the mast slot, securing it alongside the main spar. 2. The catamaran of claim 1 further comprising a ball on the lead portion of the loop larger than the mast slot the fastens the loop lead portion in the slot by passing the lead portion of the loop under the mast and upward into the slot, the loop passing through the slot from the ball on one mast side to the main spar on the opposite mast side, the mast. 3. A catamaran having horizontal left and right hulls connected in parallel, a main sail on a mast, a jib, and a rudder assembly, the improvement comprising, a main spar releasably horizontally connected centrally between the two hulls, the mast removably attached thereto at a mast proximal end, a stern spar releasably connected horizontally between the two hulls at the catamaran astern from the main spar, a platform between the main spar and the stern spar, and wherein the rudder assembly comprises a rudder hingedly attached removably to each hull stem with a tiller extending from each rudder toward the rear spar, adapted to move the rudder on a vertical axis in steering the catamaran, and a tiller arm interconnecting the tillers at their distal end such that lateral movement of the tiller arm causes the rudders to move on their vertical axes, a bow spar releasably connected horizontally between the two hulls at the catamaran forward from the main spar, a plurality of trampoline straps extending from a trampoline rearward edge and ending in a fastener first part, a plurality of stern spar straps adjustable in length and extending from a stern spar forward edge and ending in a fastener second part adapted to engage the fastener first part, the trampoline tightened between the main spar and the stern spar by adjusting the length of the plurality of stern spar straps. 4. The catamaran of claim 3 wherein the trampoline further comprises a second trampoline loop at the trampoline rearward edge with a dowel running therethrough, disposed to distribute tension from the plurality of straps across the trampoline rearward edge. 5. The catamaran of claim 3 further comprising at least one looped jib strap sewn into the trampoline into which a jib can be quickly inserted and removed manually. 6. A catamaran having horizontal left and right hulls connected in parallel, a main sail on a mast, a jib, and a rudder assembly, the improvement comprising, a main spar releasably horizontally connected centrally between the two hulls, the mast removably attached thereto at a mast proximal end, a stern spar releasably connected horizontally between the two hulls at the catamaran astern from the main spar, a platform between the main spar and the stern spar, and wherein the rudder assembly comprises a rudder hingedly attached removably to each hull stern with a tiller extending from each rudder toward the rear spar, adapted to move the rudder on a vertical axis in steering the catamaran, and a tiller arm interconnecting the tillers at their distal end such that lateral movement of the tiller arm causes the rudders to move on their vertical axes, a bow spar releasably connected horizontally between the two hulls at the catamaran forward from the main spar, and a first set of two threaded rods upward from each hull over which matching holes in the main spar fit, removably secured thereon with main spar knobs with threaded holes that engage the threaded rods for quick, hand assembly and knockdown. 7. The catamaran of claim 6 further comprising a second set of two threaded rods upward from each hull over which matching holes in the stern spar fit, removably secured thereon with stern spar knobs with threaded holes that engage the threaded rods for quick, hand assembly and knockdown. 8. The method of assembling a catamaran amenable to facile knockdown from components that include left and right hulls having a first set of two threaded rods extending upward from each hull, centrally in the hull, a second set of two threaded rods upward from each hull astern in the hull, and a hinge first part on each hull stem disposed to hingedly receive a rudder assembly having a hinge second part; two rudder assemblies each with a hinge second part; a main sail on a mast that has vertical slot on one mast side at the mast proximal end longitudinal with the mast opening at the mast proximal end; a jib, a main spar with a pair of holes in each main spar end matching the first set of two threaded rods in each hull; a stern spar with a pair of holes in each main spar end matching the second set of two threaded rods in each hull; a trampoline secured to the main spar, a tiller arm; a bow spar, stern lines; and a bow line; a cord; a plurality of trampoline straps extending from a trampoline rearward edge and ending in a fastener first part; a plurality of stern spar straps adjustable in length and extending from a stern spar forward edge and ending in a fastener second part adapted to engage the fastener first part; a plurality of knobs with threaded holes matching the threaded rods of the hulls; comprising the following steps: (a) with the hulls in parallel, connecting the two hulls with the main spar, the first set of two threaded rods upward from each hull passing through the pair of holes in each main spar end; (b) removably threading knobs over first set of two threaded rods central in each hull; (c) connecting the two hulls wit the stern spar, the second set of two threaded rods upward from each hull passing through the pair of holes in each stern spar end, as the mast attached to the stern spar by the stern lines is brought to the mast stern along with the bow stern also attached to the mast with a bow line; (d) removably threading knobs over second set of two threaded rods astern in each hull; (e) extending the trampoline as a platform from the main spar toward the stern spar and connecting the plurality of trampoline straps extending from a trampoline rearward edge by engaging the respective fastener first parts with the fastener second parts of the plurality of stern spar straps, (f) adjusting the straps in length to tighten the trampoline between the main and stern spars; (g) hingedly attaching a rudder assembly to each hull stern by engaging the hinge first part on the hull stern with the hinge second part on the rudder assembly defining a hinge with a vertical axis on which the rudder swivels in steering the catamaran, with the tiller directed from the rudder toward the stern spar; (h) connecting a tiller arm between distal ends of the tiller such that lateral movement of the tiller arm causes the rudders to move on their vertical axes; (i) raising the mast with main sail attached from horizontal to vertical with the mast abutting the main spar perpendicularly through the bow line connected between the bow spar and the mast by pulling the bow spar forward and attaching it to the bow of each hull, stem lines connected between each of the first and second hulls sternward of the main spar and the mast intermediate its length and spaced apart from the main spar together with the bow line maintaining the mast vertical as guy lines. 9. The method of claim 8 further including the step tying the mast extension to the main spar with the mast alongside the main spar by wrapping the cord around the main spar and passing it through the slot, fastening it therein such that the cord passing through the slot is prevented from returning out of the slot back toward the main spar.
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이 특허에 인용된 특허 (14)
Pool Peter J. (5 Ulladulla Place Kareela ; Sydney ; N.S.W. ; 2232 AUX), Boat construction.
Morrelli Gino J. (Tustin CA) Melvin James H. (Westminster CA) Wake John A. (Dana Point CA) Thompson Kevin M. (Temecula CA) Miller Matt S. (Del Mar CA), Catamaran.
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