Method of manufacturing laminated mold and laminated mold

U.S. patent: 7,226,341

Assigned: Kabushiki Kaisha Bridgestonen Crown moldings have long been considered the hallmarks of upscale homes. Historically, builders have marketed these moldings as expensive upgrades and finish carpenters have charged handsomely to install these trims in existing homes.Sponsored in part by NEEBCO, New Hampshire Business Review and Pella Doors and Windows, the show will feature displays by Delia, NH Tool Outlet, Insulated Concrete Forms of NH and more.

Summary: The invention of the second aspect provides the manufacturing method of the laminated mold comprising the laminate being formed of a plurality of thin sheets laminated in a widthwise direction or in a peripheral direction of the tire, and the manufacturing method is characterized in comprising the steps of laminating those thin sheets under the condition that the excess portions of them, which exceed the shape of the tire crown portion, are left on the side contacting with the tire stepping face, and after proceeding the lamination step, removal of the excess portions is carried out by means of a shot blast. By virtue of such a process, the profile of the laminated mold on the side of the tire stepping side can be formed quite the same with that of the tire as originally intended, and as a result the tire, which has both of the profile and the performance equivalent to those obtained through the casting mold currently in use, can become to be realizable easily. It is noted that, though the profile of the tire crown portion as given above is generally meant by that which is taken in a widthwise direction, but nevertheless the present invention also includes the profile taken in a peripheral direction of the tire crown portion such as change in depth of grooves in a peripheral direction of the tire.