Abstract: A non-aqueous dispersion containing, in addition to organic solvents,A) from 15-85% by weight of a dissolved film-forming component of hydroxyl group- and carboxyl-group containing polyesters, (meth)acrylic copolymers or mixtures thereof in which up to half the molecules may be esterified with 1 molecule of maleic acid each, andB) from 15-85% by weight of a disperse phase of uncross-linked (meth)acrylic copolymers having a hydroxyl number of at least 300, obtainable by the radical polymerization ofa) from 80-100% by weight of hydroxyalkyl (meth)acrylates andb) from 0-20% by weight of other .alpha.,.beta.-monounsaturated monomers in the dissolved film-forming component.

Abstract: A ventilator housing with at least one protective screen for covering a ventilator positioned in a housing, whereby through-hole borings for fastening the protective screen with fastening elements are provided in the walls of the housing. The fastening elements are formed as pin-shaped fastening studs, which can be inserted into the through-hole borings of the housing walls, and which have, on their peripheral surfaces, tongue-like springy counter-hooks which are directed in the direction opposed to the direction of insertion of the stud, being angularly to the longitudinal axis of the stud, so that after insertion of the studs into the borings, at least one counter-hook engages the housing wall under prestressing.

Abstract: An external rotor motor, especially for driving fans, including a stationary inside stator, an outside rotor, and a stator-lamination pack of the inside stator having a central bore into which there is installed, with the aid of a clamping seating, a stator bushing which is connected mechanically on one side with the motor flange carrying the external rotor motor. Inside the stator bushing, there is a turnable shaft which is fixedly secured, on the side lying opposite the motor flange, within a rotor bushing of the turnable outside rotor. The motor flange includes on the inside, a hollow cylindrical added piece with an inward-directed annular crosspiece, which abuts against the stator-lamination pack. The stator bushing, installed with the aid of a clamping seating in the central bore of the stator-lamination pack, has an outward-directed annular crosspiece which is seated against the inward-directed annular crosspiece of the cylindrical added piece of the motor flange.