http://upload.wikimedia.org/wikipedia/commons/c/c2/Involute_wheel.gif http://upload.wikimedia.org/wikipedia/commons/1/14/Gears_animation.gif http://paulscottinfo.ipage.com/linkages/zresources/7hoekens/Hoekens_linkage_animated.gif http://mw.concord.org/modeler/showcase/mechanics/SliderCrank.gif http://royalmechanical.files.wordpress.com/2011/07/swing_door_operator_animation.gif http://www.museum.kyoto-u.ac.jp/english/materials/mechBAnimation.gif http://upload.wikimedia.org/wikipedia/commons/7/74/Planeetwielmechanisme.gif http://1-media-cdn.foolz.us/ffuuka/board/wsg/image/1340/32/1340328026984.gif http://www.asahi-net.or.jp/~pg9t-ogr/sde/mc2/mc2_normalcebyshev.anim.gif http://www.asahi-net.or.jp/~pg9t-ogr/sde/mc2/mc2_mirrorchebyshev2.anim.gif http://livedoor.4.blogimg.jp/amosaic/imgs/8/e/8e2b0e93.gif http://www.idaj.co.jp/popup/img/abaqus_64.gif http://www.idaj.co.jp/popup/img/abaqus_67.gif http://www.saturn.dti.ne.jp/~y-maeda/3SlotsGeneva.gif http://www.saturn.dti.ne.jp/~y-maeda/6SlotsGeneva.gif http://www.saturn.dti.ne.jp/~y-maeda/VG_Animation_0.gif http://pds.exblog.jp/pds/1/201205/01/47/d0179447_1463343.gif http://www.cadcamcae.net/fedem/img_appli/launch_mechanism_animated_2.gif http://www.kumagaya.or.jp/~tarai/linkgear.gif