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| Number | Title | Issue Date |
| 8070000 | Apparatus and method for assembling wind turbines An apparatus for assembling a wind turbine includes a crane boom having a main bearing cable coupled to a component for lifting the component during assembly of the wind turbine, and a control mechanism coupled to the crane boom for controlling the orientation of th... | 12/06/2011 |
| 5018933 | Device for transferring an invalid to and from an automobile A device (10) for transferring an invalid includes a beam (11) comprised of two telescopically received tubes (12,13); a track (14), slidably engaged within said beam capable of supporting a rolling trolley (15) and connected winch (16) for providing a ve... | 05/28/1991 |
| 4883184 | Cable arrangement and lifting platform for stabilized load lifting The present invention is directed to a cable arrangement and lifting platform for lifting a load in a stabilized manner. The lifting platform secures loads to a securing device and the platform is able to be suspended from a crane by an attachment carriag... | 11/28/1989 |
| 4584166 | Tooling system for remote load positioning A manually controlled tooling system for the remote placement and removal of a load, such as a plug, (12) at a location (6) inaccessible to maintenance personnel. The tooling provides for both horizontal and vertical movement of the load, and, in the pref... | 04/22/1986 |
| 4392574 | Tower crane A first cable portion runs from the crab over a pulley at the point of the jib point part to the winch on the foot part. A second cable portion runs from the crab over a pulley at the end lying on the pylon side, of the jib foot part, over a pulley mounte... | 07/12/1983 |
| 4181231 | Polar wye crane A three point suspension crane for use on a circular track having the hoist machinery disposed on the crane at points proximate the engagement of the crane with the track.... | 01/01/1980 |
| 3994401 | Crane equipped with dual trolleys In a crane having two crabs or trolleys on an approximately horizontal beam of the crane, the trolleys are moved along the beam by two cables whose ends are wound on a common, motor-driven drum, and which are trained over pulleys on the beam and on the tr... | 11/30/1976 |
