http://www.freshpatents.com/Rotary-shafts-gudgeons-housings-and-flexible-couplings-for-rotary-shafts-dtnewntc464.php USPTO Class 464 - Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts en-us Mon, 6 Feb 2012 13:33:23 -0800 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/-dt20120202ptan20120028722.php Mon, 6 Feb 2012 13:33:23 -0800 One embodiment may include a torsional vibration damper having a primary element, a secondary element and a spring device for torsionally elastic coupling of the primary and the secondary element in the circumferential direction, which spring device has at least one spring element, which is arranged between a first and... http://www.freshpatents.com/-dt20120202ptan20120028723.php Mon, 6 Feb 2012 13:33:23 -0800 A propeller shaft includes a first shaft and a second shaft. The first shaft has a torque transmission face in which a plurality of fine grooves extending in a first direction (face width direction) is formed. The second spline shaft is coupled to the first spline shaft so as to...