Stranded synthetic fiber rope
AssigneeInventio AG
InventorClaudio De Angelis
Life of this patent
Estimating the term…
Abstract
A rope has a rope core formed of load-bearing aramide fiber strands laid parallel to each other in concentric layers of strands and strands of an outermost layer laid with opposite lay to the rope core. As a result of the opposite lay, the torques which occur in the layers of strands when under load cancel each other out and a non-twisting rope structure is achieved. An elastic intersheath is positioned between the oppositely laid layers of strands to protect the strands against abrasion and to transmit the torque over a wide area in the rope.
Claims15
A synthetic fiber rope having a plurality of load bearing strands comprising:
- a plurality of load bearing strands of multiple synthetic fibers laid together to form at least two concentric layers of said strands including an outer layer and an adjacent inner layer, said strands of said inner layer being laid in a first direction of lay opposite to a second direction of lay of said strands of said outer layer;
- and
- an elastically deformable intermediate layer positioned between said inner layer and said outer layer of said strands whereby when a torque is applied to said outer layer, said intermediate layer fills all interstices between said strands of said inner layer and said outer layer thereby preventing relative movement between said strands and said intermediate layer and causing a homogenized transmission of the torque applied to said outer layer over substantially an entire abutting surface of said inner layer.
An elevator installation comprising:
- an elevator car;
- a traction sheave;
- and
- a synthetic fiber rope in friction contact with said traction sheave and supporting said elevator car, said rope having a plurality of load bearing strands of synthetic fibers laid together to form at least two concentric layers of said strands including an outer layer and an adjacent inner layer, said strands of said inner layer being laid in a first direction of lay opposite to a second direction of lay of said strands of said outer layer;
- and
- an elastically deformable intermediate layer positioned between said inner layer and said outer layer of said strands whereby when a torque is applied to said outer layer, said intermediate layer fills all interstices between said strands of said inner layer and said outer layer thereby preventing relative movement between said intermediate layer and said strands and causing a homogenized transmission of the torque applied to said outer layer over substantially an entire abutting surface of said inner layer.
A synthetic fiber rope having a plurality of load bearing strands comprising:
- a plurality of load bearing strands of synthetic fibers laid together to form at least two concentric layers of said strands including an outer layer and an adjacent inner layer, said strands of said inner layer being laid in a first direction of lay opposite to a second direction of lay of said strands of said outer layer, said outer layer being surrounded by a sheath filling intermediate spaces between said stands of said outer layer at an outer circumference of the rope;
- and
- an elastically deformable intermediate layer positioned between said inner layer and said outer layer of said strands whereby when a torque is applied to said outer layer, said intermediate layer fills all interstices between said strands of said inner layer and said outer layer thereby preventing relative movement between said intermediate layer and said strands and causing a homogenized transmission of the torque applied to said outer layer over substantially an entire abutting surface of said inner layer.
Dependencies are inferred from the claim text.