Abstract: In order to create a rotor blade of hybrid design comprising a vane and a blade root, the vane having a first vane portion made of a metallic material and a second vane portion made of a lightweight material, provision is made for a rear edge of the rotor blade to be formed on the second vane portion, and for the second vane portion to be joined to the first vane portion in a single-section-type manner.

Abstract: In order to create a rotor blade of hybrid design comprising a vane and a blade root, the vane having a first vane portion made of a metallic material and a second vane portion made of a lightweight material, provision is made for a rear edge of the rotor blade to be formed on the second vane portion, and for the second vane portion to be joined to the first vane portion in a single-section-type manner.

Abstract: In order to improve a piping comprising at least one pipe and reinforcement on the outer wall of each pipe in such a way as to increase the maximum permissible internal operating pressure, it is proposed that the reinforcement should be capable of expansion along the length of the pipe and capable of contracting radially in such a way that a bias pressure can be applied to the pipe around its circumference by the longitudinal expansion of the reinforcement.

Abstract: In order to create an adjusting ring for the synchronous alteration of the angle of pitch of guide vanes of a compressor having several bearing points for mounting on a compressor housing of the compressor, which can be manufactured at least partially from materials with a low coefficient of thermal expansion and is, nevertheless, compatible with a metallic compressor housing with respect to temperature, it is suggested that the adjusting ring comprise curved ring segments each arranged between two adjacent bearing points, the curvature of the ring segments decreasing during an increase in the temperature of the ring segments so that the bearing points between the ring segments are displaced outwards in a radial direction.

Abstract: In order to provide a joint connection, comprising a first joining piece with a first contact surface and a passage opening onto the first contact surface, and a second joining piece with a second contact surface and a recess opening onto the second contact surface, said first joining piece and second joining piece standing in a joining position in relation to one another, in which the contact surfaces abut one another and the passage and the recess together form a cavity, for joining pieces made from brittle materials it is proposed that a positive-locking element is disposed in the cavity; that the positive-locking element comprises a plastically inserted molding, which is cured in the cavity and abuts the joining pieces over their surface; that together with the first joining piece and the second joining piece, the positive-locking element forms a positive locking which secures the first joining piece and the second joining piece relative to one another in at least one direction of stress along the contact

Abstract: To improve a joint connection comprising a first part and a second part which are fixed relative to one another by positive connection in a direction of load such that essentially no lumped loads occur, it is proposed that the first part and the second part each have an undercut extending transversely to the direction of load, that in a joining position the undercuts stand facing one another and in spaced relation to one another in the direction of load and thereby form between them a space containing a positive connection element which is introduced in a formable state into and cured in the space and hence lies which surface-to-surface contact on the undercuts, and that the positive connection element and the undercuts exerting a pressure load on it together form the positive connection.

Abstract: This invention relates to an arbor assembly for a bearing spindle which presents thereto a multi-row of rolling bearing elements with an inherent moment fixing the spindle axis against tilting and, under constraint of that moment, supporting the spindle for anti-frictional high speed rotation. The assembly includes bearing retaining ring means and elastomer preloaded thereagainst providing yieldability in the spindle mounting, especially adapting it for use in a cutterbar drive to mow weeds, lawns and the like.