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US 5,851,462 AGranted
Method for making a surfboard
AssigneeSun Own Industrial Co., Ltd.
InventorChing Hsi Chen
Life of this patent
Estimating the term…
Abstract
A method for making a surfboard includes a foamable material sheet cut into a number of panels and disposed in a mold device for hot pressing the panels and for expanding the panels to a prototype having a volume about 6 to 10 times greater than that of the panels. The prototype is then hot-pressed again for further expanding the prototype to the surfboard having a volume about 2 to 3 times greater than that of the prototype. The mold cavity includes tapered peripheral portions for forming tapered sides and tapered nose and tapered tail for the surfboard.
Claims6
A method for making a surfboard, said method comprising:
- providing and cutting a foamable material sheet into at least one panel,
- providing a first mold device having a mold cavity,
- engaging said at least one panel in said mold cavity of said first mold device,
- hot-pressing said at least one panel and heating said at least one panel and expanding said at least one panel to a prototype after said at least one panel is removed from said first mold device,
- providing a second mold device having a lower mold and an upper mold, said lower mold and said upper mold including a mold cavity having a size greater than that of said prototype for allowing said prototype to expand to a greater size,
- engaging said prototype in said mold cavity of said lower mold and said upper mold,
- hot-pressing said prototype and heating and foaming said prototype and filling said prototype in said mold cavity of said lower mold and said upper mold, and
- cooling said second mold device for forming said surfboard.
5 more elements
Dependencies are inferred from the claim text.