摘要:
An electrical machine (22) incorporates foil bearings (24) which are radially interposed between the stator assembly (26) and the permanent magnet of a rotor shaft (12), thus reducing the required axial length of the shaft and increasing the rotational speed at which the shaft bends incident to resonance.
摘要:
Compounds of the formula(R.sup.11 Re).sub.k O.sub.1 R.sup.12 .sub.m .multidot.L.sub.n (III)in whichR.sup.11 is a hydrocarbon group which is bonded to the rhenium via a carbon atom to which at least one hydrogen atom is still attached,R.sup.12 is aliphatic hydrocarbon radical which may contain silicon bridge atoms, or is an unsubstituted or substituted phenyl radical,L is a ligand which is bonded to the rhenium metal via one to three oxygen and/or nitrogen atoms, and theindex k is 1 or 2, the index 1 is an integer from 1 to three times k, the index m is zero or an integer from 1 to twice k, and the index n is an integer from 1 to three times k, and in which the indices k, l, m and n are selected such that their combination satisfies the 5-, 6- or 7-valence of rhenium.The invention also provides compounds of the formula(polymer).sub.f .multidot.(CH.sub.3 ReO.sub.3).sub.8 (VI)in which the rhenium compound CH.sub.3 ReO.sub.3 is bonded to the polymer via amine or amide nitrogen in the polymer. It further provides for the use of compounds of the formula R.sup.1.sub.a Re.sub.b O.sub.c (I) in which a is 1 to 6, b is 1 to 4 and c is 1 to 14 and the total of a, b and c is such that the 5-valence to 7-valence of rhenium is satisfied, with the proviso that c is not greater than three times b, and in which R.sup.1 represents an optionally fluorinated hydrocarbon, or of compounds of the formula (R.sup.11 Re).sub.k O.sub.l R.sup.12.sub.m .multidot.L.sub.n (III) or (polymer).sub.f .multidot.(CH.sub.3 ReO.sub.3).sub.g (VI), as catalysts for the oxidation of multiple C--C bonds and also provides processes of this type.
摘要:
A hand-held dispenser and applicator apparatus dispenses adhesive labels, stickers, or other such adhesive elements that are adhesive on at least one of the faces thereof, from a supply of such adhesive elements adhesively carried on a carrier tape, and furthermore designed to apply such adhesive elements to documents, cartons, album pages, or to other such workpieces. The apparatus comprises a guide structure defining a guide path for guiding adhesive-element-bearing carrier tape to a dispensing location and from there for guiding away the carrier tape freed of dispensed adhesive elements. An applicator platform, located along the guide path at the dispensing location, faces towards and is freely accessible to workpieces such that an adhesive element on a portion of carrier tape stationarily positioned on the applicator platform can be transferred to the workpiece by the user pressing the platform and thereby the adhesive element stationarily positioned thereon against the exact portion of the workpiece at which such workpiece is to receive the adhesive element. A manually activated intermittent-transport mechanism advances successive adhesive-element-bearing increments of carrier tape along the guide path into position on the applicator platform preliminary to the user pressing the applicator platform and stationarily positioned adhesive element thereon against the desired portion of the workpiece.
摘要:
A method for controlling or regulating a vacuum valve that includes a valve body (1) with a valve opening (2), a closing member (3), an actuator (5) for moving the closing member (3), and a control device (9) by which the actuator (5) is triggered and by which the pressing force acting on the elastic seal (4) in the closed position of the closing member (3) is set. The setting of the pressing force acting on the elastic seal (4) is performed as a function of at least one parameter that can be input by a user.
摘要:
The invention relates to a process for producing a catalyst for the catalytic combustion of hydrocarbons, in particular methane, wherein: a hexaaluminate of the formula MO.6Al2O3, where M is at least one alkaline earth metal and the at least one alkaline earth metal and the aluminum can also be partly replaced by at least one other metal, is prepared; and the hexaaluminate is milled to an average particle size D50 of less than 3 μm. The invention further relates to a catalyst as can be obtained by the process of the invention, a catalytic burner containing the catalyst and a fuel cell arrangement comprising the catalytic burners.
摘要翻译:本发明涉及一种用于生产用于烃,特别是甲烷的催化燃烧的催化剂的方法,其中:式M 6 Al 2 O 3的六铝酸盐,其中M是至少一种碱土金属和至少一种碱土金属, 铝也可以被至少一种其它金属部分替代; 并将六铝酸盐研磨至平均粒径D50小于3μm。 本发明还涉及通过本发明的方法获得的催化剂,包含催化剂的催化燃烧器和包含催化燃烧器的燃料电池装置。
摘要:
An aqueous catalyst solution comprising rhodium and an aqueous solution comprising sulfonated arylphosphines by reacting arylphosphines with oleum to form a sulfonation mixture, diluting the sulfonation mixture with water, extracting the diluted sulfonation mixture with a solution of a water-insoluble amine in a water-insoluble organic solvent, reacting the resulting water-immiscible organic phase with a solution of an inorganic base in water, adjusting the resulting aqueous solution of sulfonated arylphosphines of pH of up to 3 by addition of an acid, and passing an inert gas stream through the aqueous solution comprising sulfonated arylphosphines until sulfur dioxide is no longer liberated from the aqueous solution of sulfonated arylphosphines.
摘要:
An upright vacuum cleaner includes a housing having a nozzle assembly and a canister assembly. A suction generator and a dirt collection vessel are both carried on the housing. The vacuum cleaner also includes a detachable telescopic wand assembly. That wand assembly includes a first wand section, a second wand section, a wand lock for securing the two wand sections together and a trigger actuator for operating the wand lock. The trigger actuator is located remote from the wand lock on the wand assembly.