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US 4,575,050 AGranted
Mobile cable winch
AssigneeRotzler GmbH & Co. KG
InventorPeter Bechmann
Life of this patent
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AssigneeRotzler GmbH & Co. KG
InventorPeter Bechmann
Estimating the term…
In a portable cable winch the smooth shell of a motor-driven cable drum is provided with at least one conical surface having an angle of inclination corresponding to the angle of friction between the load-bearing cable and the cable drum. A clamping disk driven in synchronism with the cable drum pulls the load-bearing cable away from the smaller-diameter end of the conical surface and towards a cable storing means. The cable has applied thereto a clamping force which is transmitted as a pulling force back to the cable section to be drawn in via the conical surface. In an embodiment in which the shell of the cable drum is subdivided into two conical surfaces having identical angles of inclination but being disposed on the axis of the cable drum extending in opposite directions, it is possible also to employ the cable winch for raising and lowering loads upon the direction of rotation of the cable drum being reversed to alternatingly guide the cable onto the one or the other of the two conical surfaces. In both cases the cable drum is operated as a pull-through drum so as to prevent the individual turns of the cable from being superimposed, with the result that it is possible to drive the drum independently of the length of the cable by applying a constant invariable torque thereto.
A cable winch comprising a motor-driven cable drum operating as a pull-through type drum, a load-bearing cable held in position on said cable drum for a plurality of turns by a clamping force in the direction of a disk driven in synchronism with the cable drum, said cable drum including a shell having a conical shape and an angle of inclination throughout its entire length which corresponds to the angle of friction between said load-bearing cable and said cable drum, and wherein the load-bearing cable is pulled into the cable drum at the shell end having the larger diameter, wherein said clamping disk is mounted on a shaft driving said cable drum and a first guide pulley is rotatably supported for rotation about an axis parallel to the axis of said shaft, said first guide pulley for guiding said load-bearing cable between said cable drum and said clamping disk;
A cable winch comprising a motor-driven cable drum operating as a pull-through type drum, a load-bearing cable held in position on said cable drum for a plurality of turns by a clamping force in the direction of a disk driven in synchronism with the cable drum, said cable drum including a shell having a conical shape and an angle of inclination throughout its entire length which corresponds to the angle of friction between said load-bearing cable and said cable drum, wherein the load-bearing cable is pulled into the cable drum at the shell end having the larger diameter, and wherein the shell of said cable drum is subdivided into two conical surfaces having identical angles of inclination and disposed on the axis of said cable drum with the conical surfaces extending in opposite directions and that said load-bearing cable is supported by a guide pulley rotatably mounted parallel with the shell, which deflects the cable being paid off the shell to the said clamping disk.
The cable winch comprising a motor-driven cable drum operating as a pull-through type drum, a load-bearing cable held in position on said cable drum for a plurality of turns by a clamping force in the direction of a disk driven in synchronism with the cable drum, said cable drum including a shell having a conical shape and an angle of inclination throughout its entire length which corresponds to the angle of friction between said load-bearing cable and said cable drum, wherein the load-bearing cable is pulled into the cable drum at the shell end having the larger diameter, and wherein said cable drum is subdivided into at least first and second conical surfaces having identical angles of inclination and disposed in identical attitudes to extend in the direction of the axis of said cable drum, the diameter of the larger diameter end of the first conical surface provided for pulling in said load-bearing cable being identical with or smaller than the diameter of the larger-diameter end of the second conical surface which is wrapped by the section of said load-bearing cable which is paid out by the smaller-diameter end of the first conical surface, the cable section deflected by a first guide pulley whose axis extends parallel to the drum axis.
A cable winch comprising a motor-driven cable drum operating as a pull-through type drum, a load-bearing cable held in position on said cable drum for a plurality of turns by a clamping force in the direction of a cable storing means, said clamping force generated by a clamping disk driven in synchronism with the cable drum, said cable drum including a shell having a conical shape and an angle of inclination corresponding to the angle of friction between said load-bearing cable and said cable drum, wherein the load-bearing cable is pulled from the cable drum at the shell end having the smaller diameter to the cable storing means while the load-bearing cable is pulled into the cable drum at the shell end having the larger diameter, wherein said cable drum is subdivided into at least first and second conical surfaces, the first and second conical surfaces disposed in identical attitudes to extend in the direction of and parallel to the axis of said cable drum and parallel to each other, and wherein the diameter of the larger diameter end of the first conical surface provided for pulling in said load-bearing cable is identical with or smaller than the diameter of the larger-diameter end of the second condical surface which is wrapped by the section of said loadbearing cable which is paid out by the smaller-diameter end of the first conical surface, the cable section deflected by a guide pulley whose axis extends parallel to the drum axis.
A cable winch comprising a motor-driven cable drum operating as a pull-through type drum, a load-bearing cable held in position on said cable drum for a plurality of turns by a clamping force in the direction of a cable storing means, said clamping force generated by a clamping disk driven in synchronism with the cable drum, said cable drum including a shell having a conical shape and an angle of inclination corresponding to the angle of friction between said load-bearing cable and said cable drum, wherein the load-bearing cable is pulled from the cable drum at the shell end having the smaller diameter to the cable storing means while the load-bearing cable is pulled into the cable drum at the shell end having the larger diameter, and wherein said cable drum is subdivided into at least first and second conical surfaces having identical angles of inclination and disposed in identical attitudes to extend in the direction of the axis of said cable drum, the diameter of the larger diameter end of the first conical surface provided for pulling in said load-bearing cable being identical with or smaller than the diameter of the larger-diameter end of the second conical surface which is wrapped by the section of said load-bearing cable which is paid out by the smaller-diameter end of the first conical surface, the cable section deflected by a first guide pulley whose axis extends parallel to the drum axis.
A cable winch comprising a motor-driven cable drum operating as a pull-through type drum, a load-bearing cable held in position on said cable drum for a plurality of turns by a clamping force in the direction of a cable storing means, said clamping force generated by a clamping disk driven in synchronism with the cable drum, said cable drum including a shell having a conical shape and an angle of inclination corresponding to the angle of friction between said load-bearing cable and said cable drum, wherein the load-bearing cable is pulled from the cable drum at the shell end having the smaller diameter to the cable storing means while the load-bearing cable is pulled into the cable drum at the shell end have the larger diameter, and wherein the shell of said cable drum is subdivided into two conical surfaces having identical angles of inclination and disposed on the axis of said cable drum with the conical surfaces extending in opposite directions and that said load-bearing cable is supported by a guide pulley rotatably mounted parallel with the shell, which deflects the cable being paid of the shell to the said clamping disk.
Dependencies are inferred from the claim text.