Surfboard construction

Claim 2

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard, each surfboard portion including a body occupying most of the volume thereof and a cover layer of tough material extending about the body except at an inner surface thereof, the body being cut away at the top and bottom of the inner surface, and said surfboard portions positioned with the inner surfaces of their bodies facing one another; and a layer of hardened adhesive disposed between said inner surfaces of said bodies of said surfboard portions and in said cut away portions thereof and joined to said bodies and said cover layers.

Claim 3

The surfboard described in claim 1 wherein: said layer of hardened adhesive comprises epoxy resin.

Claim 4

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard; and a thick layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining them together, whereby to form a strengthening beam which also joins the surfboard portions, each of said surfboard portions including a body occupying most of the volume thereof and a cover layer of tough material disposed about substantially all of the body except on an inner surface of the body which faces the layer of adhesive, said body being cut away along the top and bottom of said inner surface; and said layer of adhesive extending into said cut away regions, whereby to provide a large area of contact with the cover layers and to form flanges at the top and bottom of the beam of hardened adhesive.

Claim 5

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard; and a thick layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining them together, whereby to form a strengthening beam which also joins the surfboard portions, each of said surfboard portions including a body occupying most of the volume thereof and a cover layer of tough material disposed about substantially all of the body except on an inner surface of the body which faces the layer of adhesive, said body being cut away along the top and bottom of said inner surface; and said layer of adhesive extending into said cut away regions, whereby to provide a large area of contact with the cover layers and to form flanges at the top and bottom of the beam of hardened adhesive.

Claim 6

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard; and a thick layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining them together, whereby to form a strengthening beam which also joins the surfboard portions, each of said surfboard portions including a body occupying most of the volume thereof and a cover layer of tough material with an inner face facing the body, said cover layer disposed about substantially all of the body except on an inner surface of the body which faces the layer of adhesive, said cover layer extending beyond the top and bottom of said body at the inner surface thereof; and said layer of adhesive extending along the inner face of the cover layer along the portions thereof which extend beyond the body, along a width of the cover layer which is greater than the thickness of the cover layer.

Claim 7

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard; and a thick layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining them together, whereby to form a strengthening beam which also joins the surfboard portions, each of said surfboard portions including a body occupying most of the volume thereof and a cover layer of tough material with an inner face facing the body, said cover layer disposed about substantially all of the body except on an inner surface of the body which faces the layer of adhesive, said cover layer extending beyond the top and bottom of said body at the inner surface thereof; and said layer of adhesive extending along the inner face of the cover layer along the portions thereof which extend beyond the body, along a width of the cover layer which is greater than the thickness of the cover layer.

Claim 8

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard, each surfboard portion including a body of lightweight material occupying most of the volume thereof; and a thick layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining directly to said bodies of lightweighT material of the two surfboard portions to hold them together, whereby to form a strengthening beam which also joins the surfboard portions.

Claim 9

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard, each surfboard portion including a body of lightweight material occupying most of the volume thereof; and a thick layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining directly to said bodies of lightweighT material of the two surfboard portions to hold them together, whereby to form a strengthening beam which also joins the surfboard portions.

Claim 10

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard, each surfboard portion including a body of lightweight material occupying most of the volume thereof and a separate cover layer of tough material surrounding the body except at an inner surface thereof; and means for joining the two surfboard portions together, including at least one layer of hardened adhesive extending along the height of the surfboard and joining directly to a body of lightweight materials of a surfboard portion; the cover layers on the bodies extending over the joining means and having edges lying over the joining means and held thereto by adhesive.

Claim 11

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard, each surfboard portion including a body of lightweight material occupying most of the volume thereof and a separate cover layer of tough material surrounding the body except at an inner surface thereof; and means for joining the two surfboard portions together, including at least one layer of hardened adhesive extending along the height of the surfboard and joining directly to a body of lightweight materials of a surfboard portion; the cover layers on the bodies extending over the joining means and having edges lying over the joining means and held thereto by adhesive.

Claim 12

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard, each surfboard portion including a body of lightweight material occupying most of the volume thereof and a cover layer of tough material disposed about substantially all of the body and having edges extending along the edges of the bodies; a layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining them together; and a thin strip of material extending along the length of the surfboard and disposed over the layer of hardened adhesive and the edges of the cover layers.

Claim 13

A surfboard comprising: first and second elongated surfboard portions, each extending in a direction along the length of the surfboard and each extending across approximately half the width of the surfboard, each surfboard portion including a body of lightweight material occupying most of the volume thereof and a cover layer of tough material disposed about substantially all of the body and having edges extending along the edges of the bodies; a layer of hardened adhesive extending along the height of the surfboard between the two surfboard portions and joining them together; and a thin strip of material extending along the length of the surfboard and disposed over the layer of hardened adhesive and the edges of the cover layers.