A rotor, comprising at least one rotor blade connectable to a rotor head, which rotor blade possesses a blade neck having a virtual flapping hinge in the form of a flexurally soft, flexurally elastic blade-neck portion, there being provided, in a blade-connector region of the blade neck, two auxiliary flapping hinges, spaced apart from one another in the radial longitudinal direction of the rotor blade with reference to a rotor radius, between which the virtual flapping hinge is substantially di...

A two vehicle has a tow pin which extends into a guide slot which is intersected by shunt slots. A change-over means on the floor automatically raises one selector pin on the vehicle while the vehicle is moving along the guide slot and lowers another selector pin so as to change the designation of the vehicle represented by a particular shunt slot.

A polyurethane foam encapsulated spring mattress assembly having a set of springs enclosed in a fabric envelope positioned within the mattress and covered with an open cell polyurethane foam, said envelope being covered with polyurethane foam while the springs are compressed.

An impeller of metal for ventilators, pumps, fans for internal combustion engines and fans for air-conditioning equipment composed of root portions formed on the blades to form a closed ring which is engaged by the rim of a hub.

A ferromagnetic magnetron target contains a pattern of blind holes with a circular cross-section distributed along a sputtering surface thereof. A process produces the target for a given magnetron source with a given tunnel field and includes determining and storing the tunnel field course when individual blind holes are provided in a new target surface, additively superimposing the determined tunnel field course of plural individual blind holes, comparing the resulting tunnel field course with ...

The inventive knitting tools, in particular knitting needles (6), have a body (7) which, for alignment, has on its narrow side projections (15, 16) which have precisely machined abutment surfaces (18, 19) on their end faces. The abutment surfaces (18, 19), can be produced, for example, during a suitable stage of the manufacturing process. One of the projections (15, 16) or an additional projection (17) can be provided with abutment surfaces (20, 21) which are used for longitudinal positioning of...

An inductive component, for the formation of a magnetic circuit has at least one wire winding and at least one core with a ferromagnetic core material. The core comprises a gap and at least one further gap to interrupt the magnetic circuit. The inductive component is characterized in that the gaps each have a gap width of at least 1.0 mm. The core comprises two pieces, for example, which are arranged opposed to each other across the gaps and separated from each other by the gap width. The compon...

To prevent honeycombing of containers of adjacent multipacks each having a container positioning top-carrier and which are combined together by means of a strapping band, cardboard or other material is placed between the juxtaposed surfaces of the cylindrical containers in each group before the strapping band is applied. Good package stability and minimal waste result.

In replacing a sleeve on a printing machine drum, the diameter of the drum is reduced by moving the drum parts toward one another to facilitate removing the sleeve, and/or mounting another sleeve onto the drum, and increasing the drum diameter by moving the drum parts away from one another.

The invention pertains to a coating for application to a substrate, whereby the coating comprises at least one the thermoplastic fluorine-containing polymer, and its hardness decreases from the first surface, which is destined for application to the substrate, in the direction of the second surface which is remote from the substrate. The hardness gradient can be achieved by adding filling or reinforcing agents or by addition of at least one thermoplastic polymer. The invention additionally perta...