Twin hull disassemblable rowboat

Claim 2

A twin hull disassemblable rowboat comprising: (a) a pair of generally identical elongated unitary buoyant hulls made from plastic material, said hulls being arranged and spaced side by side in parallel relation; (b) said hulls each having a bottom surface, a top surface and a pair of side surfaces; (c) said top surface having a pair of longitudinal edges and a series of longitudinally spaced notches; (d) a pair of tubular sleeves on each hull adjacent to the bow and stern, with the bow sleeve in one hull being transversely aligned with the bow sleeve in the other hull and the stern sleeve in one hull being transversly aligned with the stern sleeve in the other hull; (e) a flexible deck spanning the space between said hulls and having at one pair of edges elongated tubular sleeves and at the other pair of edges a plurality of longitudinally spaced fastening eyelets corresponding generally to and aligned with the notches in the opposing hull; (f) a pair of elongated spars extending through the corresponding deck sleeves, with the ends thereof extending beyond said deck sleeves and being respectively received in and carried by said pairs of aligned bow and stern sleeves; (g) removable tension means interposed between the eyelets of said flexible deck and said notches on the top surfaces of said hulls; and (h) removable pin fastening means extending through said bow and stern sleeves and the ends of said spars to maintain said deck and said hulls in assembled relation.

Claim 3

The twin hull disassemblable rowboat defined in claim 1 wherein each hull has a tough outer skin made from a suitable plastic material, with the interior of each hull being solid and made from a foam plastic material.

Claim 4

The twin hull disassemblable rowboat defined in claim 2 wherein said outer skin is polyethylene and said foam plastic material is polyurethane foam.

Claim 5

The twin hull disassemblable rowboat defined in claim 3 wherein each hull has an outer skin of approximately 3/16" thick and dimensions of 6' in length, 2' in height and 1' in width.

Claim 6

The twin hull disassemblable rowboat defined in claim 1 wherein said flexible deck is made from a polyvinyl chloride, dacron reinforced material.

Claim 7

The twin hull disassemblable rowboat defined in claim 1 wherein said bottom surface of each hull in elevation has a generally curved configuration from the bow to the stern.

Claim 8

The twin hull disassemblable rowboat defined in claim 1 wherein the notches in the top surface of each hull are spaced longitudinally along each of the longitudinal edges thereof, said notches having axes which extend generally perpendicular to the longitudinal axis of the hull.

Claim 9

The twin hull disassemblable rowboat defined in claim 1 wherein the side surfaces of each hull includes first side portions located generally below the water line which are straight and parallel and further includes second side portions generally above the water line which taper upwardly towards one another and terminate adjacent the top surface.

Claim 10

The twin hull disassemblable rowboat defined in claim 1 wherein said flexible deck is of generally rectangular configuration in plan.

Claim 11

The twin hull disassemblable rowboat defined in claim 1 wherein the end of each spar is connected to the corresponding stern or bow sleeve by a pair of removable quick release pins which extend through said bow or stern sleeve and the corresponding end of said spar to maintain said deck and said hulls in assembled relation.

Claim 12

The twin hull disassemblable rowboat defined in claim 1 wherein each hull is provided in the top surface thereof with one or more sockets, each of which is adapted to receive the stem of an oar lock.

Claim 13

The twin hull disassemblable rowboat defined in claim 11 wherein a pair of tubular sockets are provided in the top surface of each hull and are designed to selectively receive the stem of an oar lock.

Claim 14

The twin hull disassemblable rowboat defined in claim 12 wherein said elongated spars are tubular and made from aluminum.

Claim 15

The twin hull disassemblable rowboat defined in claim 1 wherein approximately 2/3 of the height of the hulls ride above the water level due to the buoyancy of the rowboat.

Claim 16

The twin hull disassemblable rowboat defined in claim 1 wherein said tubular sleeves at the bow and stern are molded into the hulls at the time of manufacture.

Claim 17

A twin hull disassemblable rowboat defined in claim 1 wherein the removable tension means are in the form of a plurality of tension ropes, each rope at one end thereof being fixedly secured to an eyelet, with the other end of the rope having an enlarged knot or head formed thereon, with the rope adapted to fit over the top surface of the hull and extend through the corresponding notch, with the knot fitting under and engaging the under surface of the notch.

Claim 18

A hull for a catamaran type water craft: (a) a unitary elongated buoyant body having a longitudinal axis, said body being made from plastic material and having a generally smooth and tough outer skin surrounding a foam plastic inner core; (b) said body having a bottom surface, top surface and a pair of side surfaces; (c) said bottom surface in elevation having a generally curved configuration from the bow to the stern; (d) the side surfaces including first side portions in the part of the body below the water line which are parallel and second side portions generally above the water line which are inclined upwardly towards one another and terminate adjacent said top surface: and (d) said top surface having a pair of longitudinal edges and a series of longitudinally spaced notches along each of the longitudinal edges thereof, said notches having axes which extend generally perpendicular to the longitudinal axis of the body, each notch being adapted to catch a knot at the end of a line.

Claim 19

A hull for a catamaran type water craft: (a) a unitary elongated buoyant body having a longitudinal axis, said body being made from plastic material and having a generally smooth and tough outer skin surrounding a foam plastic inner core; (b) said body having a bottom surface, top surface and a pair of side surfaces; (c) said bottom surface in elevation having a generally curved configuration from the bow to the stern; (d) the side surfaces including first side portions in the part of the body below the water line which are parallel and second side portions generally above the water line which are inclined upwardly towards one another and terminate adjacent said top surface: and (d) said top surface having a pair of longitudinal edges and a series of longitudinally spaced notches along each of the longitudinal edges thereof, said notches having axes which extend generally perpendicular to the longitudinal axis of the body, each notch being adapted to catch a knot at the end of a line.

Claim 20

The hull defined in claim 17 wherein said outer skin is polyethylene and said foam plastic material is polyurethane foam.

Claim 21

The hull defined in claim 18 wherein said body has an outer skin of approximately 3/16" thick and dimensions of 6' in length, 2' in height and 1' in width.

Claim 22

The hull defined in claim 17 wherein the top surface of said body is provided with one or more sockets, each of which is adapted to receive the stem of an oar lock.

Claim 23

The hull defined in claim 17 wherein approximately 2/3 of the height of the hull ride above the water level due to the buoyancy thereof.

Claim 24

The hull defined in claim 17 wherein a pair of tubular sleeves are located at the bow and stern of said body, said sleeves being molded into the body at the time of manufacture.

Claim 25

A twin hull disassemblable water craft of the catamaran type comprising: (a) a pair of generally identical elongated unitary buoyant hulls made from plastic material, said hulls being arranged and spaced side by side in parallel relation; (b) said hulls each having a bottom surface, a top surface and a pair of side surfaces; (c) said bottom surface in elevation having a generally curved configuration from the bow to the stern; (d) said top surface having a pair of longitudinal edges and a series of longitudinally spaced notches having axes which extend generally perpendicular to the longitudinal axis of the hull; (e) the side surfaces including first side portions located generally below the water line which are straight and parallel and second side portions generally above the water line which taper upwardly towards one another and terminate adjacent said top surface; (f) a pair of tubular sleeves on each hull adjacent the bow and stern, with the bow sleeve in one hull being transversely aligned with the bow sleeve in the other hull and the stern sleeve in one hull being transversely aligned with the stern sleeve in the other hull; (g) a flexible deck spanning the space betwen said hulls, said deck being of generally rectangular configuration in plan, said deck having at one pair of parallel edges elongated tubular sleeve and at the other pair of parallel edges a plurality of longitudinally spaced fastening eyelets corresponding generally to and aligned with the notches in the opposing hull; (h) a pair of elongated spars extending through the corresponding deck sleeves, with the ends thereof extending beyond said deck sleeves and being respectively received in and carried by said pairs of aligned bow and stern sleeves; (i) removable tension means interposed between the eyelets of said flexible deck and said notches on the top surface of said hulls; and (j) removable pin fastening means extending through said bow and stern sleeves and the ends of said spars to maintain said deck and said hulls in assembled relation.

Claim 26

A twin hull disassemblable water craft of the catamaran type comprising: (a) a pair of generally identical elongated unitary buoyant hulls made from plastic material, said hulls being arranged and spaced side by side in parallel relation; (b) said hulls each having a bottom surface, a top surface and a pair of side surfaces; (c) said bottom surface in elevation having a generally curved configuration from the bow to the stern; (d) said top surface having a pair of longitudinal edges and a series of longitudinally spaced notches having axes which extend generally perpendicular to the longitudinal axis of the hull; (e) the side surfaces including first side portions located generally below the water line which are straight and parallel and second side portions generally above the water line which taper upwardly towards one another and terminate adjacent said top surface; (f) a pair of tubular sleeves on each hull adjacent the bow and stern, with the bow sleeve in one hull being transversely aligned with the bow sleeve in the other hull and the stern sleeve in one hull being transversely aligned with the stern sleeve in the other hull; (g) a flexible deck spanning the space betwen said hulls, said deck being of generally rectangular configuration in plan, said deck having at one pair of parallel edges elongated tubular sleeve and at the other pair of parallel edges a plurality of longitudinally spaced fastening eyelets corresponding generally to and aligned with the notches in the opposing hull; (h) a pair of elongated spars extending through the corresponding deck sleeves, with the ends thereof extending beyond said deck sleeves and being respectively received in and carried by said pairs of aligned bow and stern sleeves; (i) removable tension means interposed between the eyelets of said flexible deck and said notches on the top surface of said hulls; and (j) removable pin fastening means extending through said bow and stern sleeves and the ends of said spars to maintain said deck and said hulls in assembled relation.

Claim 27

The twin hull disassemblable water craft defined in claim 23 wherein each hull has a tough outer skin made from a suitable plastic material, with the interior of each hull being solid and made from a foam plastic material.

Claim 28

The twin hull disassemblable water craft defined in claim 24 wherein said outer skin is polyethylene and said foam plastic material is polyurethane foam.

Claim 29

The twin hull disassemblable water craft defined in claim 25 wherein said flexible deck is made from a polyvinyl chloride, dacron reinforced material.

Claim 30

The twin hull disassemblable water craft defined in claim 25 wherein the notches in the top surface of each hull are spaced longitudinally along each of the longitudinal edges thereof, said notches having axes which extend generally perpendicular to the longitudinal axis of the hull.

Claim 31

The twin hull disassemblable water craft defined in claim 23 wherein the end of each spar is connected to the corresponding stern or bow sleeve by a pair of removable quick release pins which extend through said bow or stern sleeve and the corresponding end of said spar to maintain said deck and said hulls in assembled relation.

Claim 32

The twin hull disassemblable water craft defined in claim 23 wherein approximately 2/3 of the height of the hulls ride above the water level due to the buoyancy of the rowboat; said tubular sleeves at the bow and stern are molded into the hulls at the time of manufacture; and wherein the removable tension means are in the form of a plurality of tension ropes, each rope at one end thereof being fixedly secured to an eyelet, with the other end of the rope having an enlarged knot or head formed thereon, with the rope adapted to fit over the top surface of the hulls and extend through the corresponding notch, with the knot fitting under and engaging the under surfaces of the notch.