Abstract: The invention relates to a decoupling mat (1) with a continuous plastic layer (2), for example one fabricated via deep drawing, comprising elongated, rib-like formations (3) on a first broadside (B1), wherein the formations (3) simultaneously form groove-like recesses (5) on a second broadside (B2) lying opposite the first broadside (B1). In order to achieve a solution advantageous for use, emphasis is placed on having the formations (3) be bordered in their longitudinal extension (1) by sections (9) of a reduced height (h?) and/or width (c?), which simultaneously also form partial areas (10) of less depth (s?) and/or width (d?) bordered relative to the recesses (5). In addition, the invention relates to a floor structure, in particular in a building with a decoupling mat (1).

Abstract: The invention relates to a decoupling mat (1) with a continuous plastic layer (2), for example one fabricated via deep drawing, comprising elongated, rib-like formations (3) on a first broadside (B1), wherein the formations (3) simultaneously form groove-like recesses (5) on a second broadside (B2) lying opposite the first broadside (B1). In order to achieve a solution advantageous for use, emphasis is placed on having the formations (3) be bordered in their longitudinal extension (1) by sections (9) of a reduced height (h?) and/or width (c?), which simultaneously also form partial areas (10) of less depth (s?) and/or width (d?) bordered relative to the recesses (5). In addition, the invention relates to a floor structure, in particular in a building with a decoupling mat (1).

Abstract: A universal joint shaft for driving a roll of a rolling mill includes a connecting shaft, a first universal joint that is attached to a first end of the connecting shaft, a second universal joint that is attached to a second end of the connecting shaft, a coupling sleeve that includes a longitudinal axis that is connected to the first universal joint, which comprises a receiving bore with an opening for receiving a journal of a roll, wherein the receiving bore forms torque transmitting transmission faces, and which includes a first conical face that is arranged concentrically relative to the longitudinal axis, wherein the first conical face is provided for contacting a correspondingly designed first counter face at the journal of the roll, as well as a structure means by which the first conical face is loaded along the longitudinal axis towards the roll.