The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2005
Filed:
Apr. 30, 2003
Dai Gil Lee, Daejeon, KR;
Jin Kook Kim, Daejeon, KR;
Hak Sung Kim, Asan-si, KR;
Jong Woon Kim, Seoul, KR;
Dai Gil Lee, Daejeon, KR;
Jin Kook Kim, Daejeon, KR;
Hak Sung Kim, Asan-si, KR;
Jong Woon Kim, Seoul, KR;
Korea Advanced Institute of Science and Technology, Daejeon, KR;
Abstract
The propeller shaft comprises a transmission shaftconsisting of a hollow metal tubewith excellent torque transmissibility and a composite material prepregshaving higher specific stiffness than a metal material and stacked to the inner surface of the metal tube, and metal yokesmounted on both ends of the transmission shaft and assembled with other devices. The composite material prepregs is co-cure bonded while applying an axial compressive preload to the transmission shaft and creating a vacuum in a space between a vacuum bag inserted in the transmission shaft and the composite material prepregs of the transmission shaft. Teethor embossmentsand adhesive-retaining groovesare formed on inner surfaces of the metal yokes, so the transmission shaft is desirably compression-fitted into the metal yokes. Accordingly, the propeller shaft has advantages of securing improved impact, abrasion, and water resistance.