Devices

BPERFORMING OPERATIONS TRANSPORTING B66Lifting technology B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR

B66F3/00Devices

B66F3/005with rocking arm or sector B66F3/02with racks actuated by pinions B66F3/04with several racks B66F3/06with racks comprising pivotable toothed sections or segments B66F3/08screw operated B66F3/10with telescopic sleeves B66F3/12comprising toggle levers B66F3/14actuated through pawl-and-ratchet mechanisms B66F3/16actuated through bevel-wheel gearings B66F3/18actuated through worm gearings B66F3/20actuated through multiple or change-speed gearings B66F3/22Lazy-tongs mechanisms B66F3/24fluid-pressure operated B66F3/242suspended jacks B66F3/245comprising toggle levers B66F3/247pneumatically actuated B66F3/25Constructional features B66F3/26Adaptations or arrangements of pistons B66F3/28telescopic B66F3/30with positive brakes or lock B66F3/32with means for avoiding excessive shocks on completion of movements B66F3/35Inflatable flexible elements B66F3/36Load-engaging elements B66F3/38adjustable relative to piston B66F3/40inflatable B66F3/42with self-contained pumps B66F3/43Pyrotechnical jacks B66F3/44with self-contained electric driving motors B66F3/46Combinations of several jacks with means for interrelating lifting or lowering movements