Patent ID: 11970912
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A tubular drive assembly comprising:
an outer tube having a first longitudinal axis and a polygonal cross-sectional contour having side faces and corner areas; and
an inner body having a second longitudinal axis, a polygonal cross-sectional contour having side faces and corner areas, and arranged within the outer tube;
wherein the inner body and the outer tube have a mutual axial overlap;
wherein the outer tube and the inner body have radial play so that the outer tube and the inner body have rotational freedom with respect to each other over an angular rotational freedom range between a first extreme rotational position and a second extreme rotational position; and
wherein at least one of the extreme rotational positions is defined by outer surfaces of at least three corner areas of the inner body contacting inner surfaces of respective side faces of the outer tube in respective substantially line-shaped contact zones that extend axially over substantially the entire axial length of the overlap.