Abstract: A coupling device for coupling two components in a torque-conducting manner including a first coupling component having a first external toothing and a second coupling component having a second external toothing. In addition, the coupling device has a sliding sleeve having an internal toothing which is permanently engaged with the first external toothing and can be selectively brought into engagement with the second external toothing. Furthermore, a locking unit is provided which can selectively assume a locking state in which the sliding sleeve is held in a form-fitting manner in a rotationally coupled state. In addition, the locking unit can selectively assume an unlocking state.

Abstract: A multi-ply tissue paper product includes at least three plies. The tissue paper product includes a first inner ply being a creped ribbed ply and having a basis weight of 10 to 30 gsm, and a first outermost ply and a second outermost ply on each side of said inner ply, the first and second outermost plies being non-ribbed plies, wherein a creped ribbed ply is a ply including ribs and valleys providing an average core roughness Rk in the range 10 to 300 ?m, and peaks being 4 to 12 per cm as measured along said first direction; and wherein a non-ribbed ply is a ply displaying no parallel ribs and valleys extending continuously along any direction of the ply or displaying parallel ribs and valleys extending continuously along any direction of the ply, the ribs and valleys providing peaks being less than 4 per cm.

Abstract: A fibrous product, especially tissue paper product, non-woven product, or a hybrid thereof, especially hygiene and cleaning product, has at least one ply, the surface of which is partly covered with an embossing pattern. The pattern includes at least one first zone being micro-embossed with at least 30 embossing depressions per cm2, preferably 30 to 160 embossing depressions/cm2, more preferably 30 to 120 embossing depressions/cm2, and most preferably 45 to 100 depressions/cm2, forming a background embossing area. A plurality of second zones are unembossed and form a motif element. In addition to the second zones, at least one third zone is largely surrounded by linear depressions. Also disclosed is an embossing roll and an embossing device including a method for manufacturing such fibrous products.

Abstract: A magnetic dispersion comprising finely divided iron power or iron alloy powder having a BET value of more than 35 m.sup.2 /g dispersed in a polymeric binder and organic solvent, whose filterability is markedly improved, is obtained by using certain low molecular weight phosphoric esters of the general formula I or II ##STR1## combined with a dispersion-active compound which contains at least one polar group capable of adsorption on the magnetic pigment. The polar group of the dispersion-active compound can be an acid or alkaline or amphoteric group or a group capable of hydrogen bonding or polarization. The dispersion-active compound can be a polycondensate, a polyaddition product or a chain growth copolymer which can also be used in the magnetic dispersion combined with customary other polymeric binders.

Abstract: A watchman's tour recording system which includes a watchman's unit having a clock means for producing digital time signals, a station identification signal producing means for producing digital station signals, at least two digital bit storage or memory means and special address means arranged to direct the digital time and station identification signals into predetermined locations in the memory means so that their storage capabilities are most effectively utilized. Novel photoelectric station identification signal generating means are also disclosed.