Abstract: The invention provides a powdered starting material for a nickel-based alloy for manufacturing a porous anode of a fuel cell containing 0.5 to 10% by weight of aluminum, titanium and/or zirconium. The powder is manufactured using a mixture of carbonyl nickel powder and a powder of an intermetallic aluminum, titanium and/or zirconium compound having a particle size of 1 to 10 microns. The powder is produced by mixing the carbonyl nickel powder with an amount of an intermetallic compound such that 0.5 to 10% by weight of the desired element or elements is present in the anode material, the intermetallic compound having a particle size of 1 to 10 mm. An anode for a fuel cell can be produced from the powder by applying the powder to a substrate and sintering it at 900.degree. to 1100.degree. C.

Abstract: Separator plate for stacking fuel cells of the molten-carbonate type, provided with openings for fuel inlet and fuel outlet and for inlet and outlet of oxidizing agent, the gas passages through the separator plate having a spring characteristic as a result of choosing a suitable profile therefore and as a result of a frame-type spring which is disposed around the active cell assembly, which frame-type spring contains built-in components for conveying the process gases, and the profile of the frame spring is matched to the spring characteristic of the gas passage.

Abstract: Each radially extending blade (12) of a wind motor is fitted near its tip with an auxiliary vane (13) which can result in an increase of efficiency. Different from known devices each auxiliary vane (13) is placed with respect to the blade (12) so that the low-pressure peaks of the vanes (13) and the blades (12) are separated one from the other rotation by more than 0.3-times the length of the largest chord. Preferably the auxiliary vanes (13) are designed so that its center of gravity lies in front of the blade (12). The lengthwise axis of the auxiliary vanes (13) makes an angle .alpha. lying between 10.degree. and 40.degree. with the rotational axis (11) of the blades (12), the lateral edges (17) of the vanes (13) is bevelled rearward with respect to the leading edge (16) under an angle .beta. from 15.degree. to 45.degree. and the surfaces meeting surfaces meeting at the lateral edges (17) make an angle .UPSILON. which approaches zero value.

Abstract: Improved process and device for extracting energy present in a flowing fluid medium wherein a supported hub with propellers or blades is placed in said medium and the blades are provided with a wing or vane at the tip. The wing is of such a form that it generates a "venturi effect" in the flowing medium by which a part of the fluid which should normally pass outside the propeller disc area, is drawn into the propeller. The improvement consists of mixing of fluid which normally should pass outside the venturi with fluid which has flowed through the blades by provisions on blades and/or wing or vanes.

Abstract: Flywheel set for accumulating energy with elastically supported bearings, resulting in a low critical speed, lying at all times under the operational flywheelspeed.The axial thrust taking bearings, or one bearing, may be operating with magnetic forces.Spherical pivot bearings may be fitted both at the bottom and at the top of the rotor.

Abstract: Flywheel rotor, particularly suitable for accumulating energy, built up from separate flywheels which are interconnected by means of an elastic link. The link may have the form of a solid of revolution comprising at least a single, relatively thin-walled bellows fold.At least one fold wall of the bellows fold may have the form of a truncated cone. The rotor may comprise cylindrical rotor parts as well as unperforated disks of Laval-shape.

Abstract: Electric solar or windpowerplant with flywheel battery in which the electric generator is in the form of a d.c. generator, electrically connected to brushless d.c. motors switched in parallel which can also act as generators and each of which is coupled to a flywheel.

Abstract: Windmill or solar plant for generating electric energy having a transmission in the form of an epicyclic gear transmission with sun wheel and planet wheels, the sun wheel of which is connected to the generator shaft, and the planet wheels being coupled with a regulator motor having two directions of rotation as well as a variable speed of rotation, the ring gear being driven directly or indirectly by the windmill or driving shaft.

Abstract: Vessel for weighing hot or cold fluid materials, having an elastic filling conduit of which a temperature difference may give a reading error. This error is corrected by a prestressing force on this conduit.