Back to results
US 4,157,171 AGranted
Tensioning device for chains, wire ropes etc.
AssigneeSeasafe Transport AB
InventorKjell Hasselas
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSeasafe Transport AB
InventorKjell Hasselas
Estimating the term…
Tensioning device for chains etc. for lashing, for example, rolling cargo on ships' decks, comprising an oblong housing with a chain- or wire-rope-fastening device at one end, a threaded spindle journalled inside the housing, and on the spindle a non-rotatable sliding piece movable on rotation of the threaded spindle in the longitudinal direction of the housing and guided in it, the sliding piece projecting, with a part fitted with another chain- or wire-rope-fastening device, radially from a longitudinal slot in the housing, the which part is connected with a tubular element longitudinally displaceable on the housing, said tensioning device being able to be brought by means of said chain- or wire-rope-fastening devices at the side of a chain or wire rope for tensioning it, the threaded spindle owing inter alia to its being designed with low pitch on the gear reducton principle and to its bearing against the end of the housing by means of a collar, and owing to its drive connection on the housing in the form of a preferentially parallelepipedic power connection, unimpeded by the chain, for working with a motor-driven, preferentially pneumatically driven unit, so permitting rapid actuation of the tensioning device and a large tensional force during loading and discharging.
A tensioning device for chains and the like comprising an elongated hollow casing closed at each end and having a longitudinal slot formed in the wall thereof, a first hook member secured fixedly at one end of said casing and extending radially therefrom, a slidable body located in said casing, a second hook member integral with said body extending outwardly of said slot in opposition to said first hook member, screw means threadedly extending through said slidable body, said screw means extending outwardly of the end of said casing opposite said first hook member and having means for engagement with a power drive means, and a slidable sleeve surrounding said casing and integrally attached to said second hook member thereby resisting torque reaction between said casing and said slidable body.
A tensioning device for chains and the like comprising an elongated hollow casing closed at one end and having a longitudinal slot formed in the wall thereof, a first hook member secured fixedly at one end of said casing and extending therefrom, a slidable body located in said casing, a second hook member integral with said body extending outwardly of said slot, screw means threadedly extending through said slidable body, said screw means extending outwardly of the end of said casing and having means for engagement with a power drive means, and a slidable sleeve surrounding said casing and integrally attached to said second hook member thereby resisting reaction between said casing and said slidable body.
A tensioning device for chains and the like comprising in combination:
Dependencies are inferred from the claim text.