http://www.freshpatents.com/Traversing-hoists-dtnewntc212.php USPTO Class 212 - Traversing hoists en-us Fri, 19 Dec 2008 00:02:57 -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/Combination-crane-dt20081211ptan20080302749.php Fri, 19 Dec 2008 00:02:57 -0800 A combination crane A is formed by connecting two crawler cranes 1L and 1R. Each crawler crane is provided with at least a lower propelling body 3 which can propel by crawlers 2, an upper revolving body 5 rotatably mounted on the lower propelling body 3 by a swing unit... http://www.freshpatents.com/Self-orienting-anti-two-block-switch-assembly-dt20081211ptan20080302750.php Fri, 19 Dec 2008 00:02:57 -0800 An anti-two block switch assembly for a crane is disclosed for preventing the crane from a two-blocking condition. The switch assembly includes a rotatable joint which allows the assembly to rotate about more than one axis. The switch assembly is also provided with a mounting plate and a mounting rod...