Abstract: Alkene aldehyde sulfoxylates are more effective than their saturated aldehyde sulfoxylate counterparts as systemic pesticides for protecting plants.

Abstract: A rotor bearing assembly for a wind power engine exhibits great stability and strength, and reduces flexural stresses on a mast of a wind power engine.The bearing body (2) is suspended from and mounted on a horizontal pivot axis (X) and carries a rotor assembly (3) on a short lever arm and an aerodynamic airfoil (5) on a log lever arm (4). In connection with a descending force, an airfoil (5) produces a counter torque about the horizontal pivot axis (X) opposed to the dynamic pressure-dependent torque due to the rotor assembly (3).

Abstract: An alkali-metal dithionite is readily transformed into an aldehyde sulfoxylate microbicide which is absorbed through plant leaves and is more stable against oxidation.

Abstract: A rotor for operation without the influence of flow-guiding stationary housings or channels in a flow medium contained in a space of unlimited dimensions, particularly for a wind power plant or a helicopter or an autogiro, comprising one set of rotor blades and a shroud arranged in the region of the periphery of the rotor and formed as an axially symmetrical outer annular shroud rotating in unison with the rotor. The outer annular shroud in cross-section lying in an imaginary plane extending through the rotor axis has a profile the angle of which is greater than its critical (stalling) angle of attack with respect to a flow direction extending parallel to the rotor axis. The profile is adapted to generate a lift force under the effective flow conditions given at rotation of the rotor within the operational rotational speed range, and is oriented such that its suction side forms the inner side of the annular shroud.

Abstract: A turbine rotor comprising radially extending blades having inner and outer ends and an axially symmetrical annular shroud having upstream and downstream ends affixed to the blades adjacent the outer ends thereof and rotating with the blades. The annular shroud increases in diameter from its upstream end to its downstream end such that a passage formed thereby widens from its upstream intake opening towards it downstream outlet opening, with the annular shroud in radial section having a profile adapted to produce a lift force under onflow conditions and being oriented such that its suction side forms the interior surface of the annular shroud facing the passage and that its angle of attack relative to a direction extending parallel to the central axis of the annular passage is smaller than the critical (stalling) angle of the profile. A further annular shroud may be fixed to the inner ends of the blades.

Abstract: An electromagnetic driving device which includes two parts which are movable relative to one another, each part supporting a plurality of magnetic poles which act together with the magnetic poles of the other respective part to produce a force causing a relative movement of the parts. The poles of at least one part are designed as electromagnetic poles whose magnetic polarization is controlled. The poles of at least one part are arranged in at least three groups extending in the direction of relative movement and the pole spacings within each group, measured in the direction of relative movement, being constant and of equal magnitude in all groups. The poles of the other respective part which cooperate with the poles disposed in groups are arranged in at least one grouping which extends at an angle to the direction of relative movement and which traverses the entire width covered by the pole groups of said first part.

Abstract: A wind-driven power plant comprising at least one rotor having a gyration axis, a base, a carrier construction pivotable on said base about an upstanding axis, a support structure pivotable on said carrier construction about a tilt axis in a manner permitting precession of said rotor, said rotor being rotatably supported by said support structure and rotatable about said gyration axis, an adjusting device for pivoting said carrier construction on said base in response to changes in horizontal wind direction, a setting device for exerting torque directly or indirectly on the rotor gyration axis or on the rotor which has a torque vector component extending perpendicularly to the rotor gyration axis and perpendicularly to the upstanding axis, said tilt axis intersecting both the rotor gyration axis and the upstanding axis and forming an angle with both, and a control device for controlling the magnitude of movement of said adjusting and setting devices in response to the rotor rotational speed and the desired wi

Abstract: A tethered wind-driven floating power plant which includes a support body carrying at least one rotor assembly, a current generator coupled to the rotor and alignment assembly for aligning the rotor to face into the wind, a ground anchor and at least one captivating stay connecting the floating power plant to the anchor. The support body is hollow and gas-filled to carry its own weight as well as the weight of the rotor assembly, current generator and alignment assembly. The support body is connected to the captivating stay through a joint connection having three degrees of freedom. The rotors are gimbal-mounted, at a variable relative position with respect to the support body but in fixed positions relative to one another.

Abstract: A rotor arrangement for an aircraft comprising two coaxially counter-rotatable rotators, each rotor being journaled freely rotatable about an imaginary axis of rotation common to both rotors on or through a fuselage part or a support member, each fuselage part or support member being either rigidly connected to or journaled on the fuselage, each rotor together with the other respective rotor or with the component part of the support member or fuselage part supporting the first mentioned rotor constituting an integral part of an electromotor by forming the counteracting parts of the electromotor ("rotor" and "stator") which rotate relative to one another by securing a plurality of poles of the electromotor to the respective rotor and by arranging on the other counter-rotating rotor or on the component part of the support member or fuselage part supporting the first mentioned rotor the corresponding poles of the electromotor facing toward the poles of the respective rotor such that a reciprocal field effect exi