Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Method of manufacturing a drive shaft
 An FRP drive shaft wherein the shaft body and the flanges are formed in a body and a method of manufacturing the same are disclosed. The shaft body is formed by winding a resin impregnated fiber on a mandrel having pins on its circumferential surface while hooking the fiber on the pins. The fiber is then circumferentially wound to form a hoop-like reinforcing band near each end of the shaft body. After the pins and end parts of the mandrel are removed, each end portion of the shaft body is expanded by a pressing mold to form a flange. After hot setting, the remaining part of the mandrel is removed. 
Toyota Jidosha Kabushiki Kaisha
B B B F B F Y F B B
B29C B29C B29C F16D B29C F16D Y10S F16C B29L B29C
inventional inventional inventional inventional inventional inventional additional inventional additional inventional
Tadao Masahiko Shigenori Yasuyuki Motohiro
Ohta Morinaga Tamaki Suzuki Mizuno