|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B29C-033/50 B29C-065/02 B29C-031/30|
|미국특허분류(USC)||264/511 ; 264/452 ; 264/554 ; 264/571|
|발명자 / 주소|
|인용정보||피인용 횟수 : 14 인용 특허 : 11|
Sailboards having a tucked rail are made from a flexible, resilient mold so that the seam of the board is along its bottom edge instead of at its point of greatest breadth. A flexible mold part having the contour of the sailboard to be produced has an opening smaller than the greatest breadth of the board. The mold is first flexed so that its opening is sufficiently wide to receive the blank that forms the body of the sailboard. Secondly, the blank is inserted into the flexed mold, and thirdly, the mold is released and its resiliency returns it to its or...
A method of producing a seamless sailboard from a blank that is pervious to air, comprising the steps of: providing a flexible and resilient mold part having an internal cavity means of predetermined breadth and configuration and having an open end of less breadth than the breadth of said internal cavity means; providing a flat, laterally extending flange means about the peripheral border of said open end; increasing the breadth of said open end by flexing said mold part; introducing said blank into said internal cavity means; releasing said mold part so...