Abstract: The present invention provides a to method for reinforcing a wind turbine blade, such as a root end. The root end comprises a first and a second bushing for attaching the wind turbine blade to a wind turbine hub, the bushings being located between an inner sidewall of the root end and an outer sidewall of the root end, the bushings being separated by retaining material, the method comprising forming a first injection channel in the retaining material; forming a first pressure release channel in the first retaining material, wherein the first pressure release channel is formed to be in fluid communication with the first injection channel in a region between the inner sidewall and the outer sidewall; and injecting adhesive material into the first injection channel at least until adhesive material enters the formed first pressure release channel. The invention also provides a wind turbine blade having a root end that has been reinforced using such a method. Further aspects are provided.

Abstract: The invention concerns a method of steering a vehicle, particularly an articulated vehicle, in which a valve element of a main valve is moved so that it releases or closes connections between a supply connection arrangement and a working connection arrangement in dependence of a steering direction and a steering angle. To improve the steering comfort, the movement speed of the valve element is controlled.

Abstract: A hydraulic steering arrangement with a steering handwheel which is connected with a hydraulic steering unit, and with a steering motor connected with a pump via a steering valve. In a steering arrangement of this kind, a simple construction is desired, though under maintenance of the required security. For this purpose, the steering valve can optionally be operated by a steering handwheel or by a hydraulic pressure generated by a control pressure generator.

Abstract: A hydraulic steering arrangement with a steering handwheel, which is connected with a hydraulic steering unit, and a steering motor, which is connected with a pump via a steering valve. In a steering arrangement of this kind an improvement of the steering comfort is desired. For this purpose, a supply line is located between the steering unit and the pump, and a pressure reduction valve is located in the supply line.

Abstract: A hydraulic steering arrangement, having a steering value, which connects a steering motor with a pump, and which has a slide with two front sides, the slide being adjustable by means of a pressure fluid both through a hydraulic steering unit with a steering hand wheel and through an electro hydraulic steering unit with a control pressure generator. The two steering units have working connections and the front sides of the slide are connected with shuttle valves, each of which is connected with hydraulic steering unit on the one side and with the electro hydraulic steering unit on the other side. A valve arrangement connects the working connection of both steering units, which has the highest pressure, with one front side of the slide, and the working connection of both steering units, which has the lowest pressure, with the other front side of the slide.

Abstract: A hydraulic steering arrangement (1) having a steering valve (2) is described, by way of which steering valve (2) a steering motor is in communication with a pump and which steering valve (2) has a slider (3) having two end faces (8), which slider (3) can be displaced by a pressure fluid by means of a hydraulic steering unit (4) having a steering handwheel (5), the hydraulic steering unit (4) having two work connections (6) and each work connection (6) applying a work pressure to a respective end face of the two end faces (8) of the slider (3) by way of a connection (7).

Abstract: The invention concerns a hydraulic steering arrangement (1), having a steering valve (2), which connects a steering motor with a pump, and which has a slide (3) with two front sides (8), the slide being adjustable by means of a pressure fluid both through a hydraulic steering unit (4) with a steering hand wheel (5) and through an electro hydraulic steering unit (6) with a control pressure generator, the two steering units having working connections (7) and the front sides (8) of the slide (3) being connected with shuttle valves (9), each of which being connected with the hydraulic steering unit (4) on the one side and with the electro hydraulic steering unit (6) on the other side.

Abstract: The invention concerns a method for emergency steering of a hydraulic steering arrangement (1) with a steering handwheel (2), in which a steering valve (5) is optionally operated via the steering handwheel (2) or via a control pressure generator (7), and a steering motor (4) is acted upon by a pump pressure of a pump (6) via the steering valve (5), as well as a hydraulic steering unit (3) for applying the method.

Abstract: The invention concerns a method of steering a vehicle, particularly an articulated vehicle, in which a valve element of a main valve is moved so that it releases or closes connections between a supply connection arrangement and a working connection arrangement in dependence of a steering direction and a steering angle.