Abstract: The invention relates to a method for producing a Bourdon tube pressure gauge 1, comprising at least a housing 2, a Bourdon tube 3 and a process carrier 5, wherein the process medium enters the Bourdon tube 3 via a fluid channel starting from the process carrier 5 and the process carrier 5 is constructed in two parts, wherein a first part is connected to the Bourdon tube 3 as a spring carrier 4 and a second part serves as a connecting element 18 and both parts are joined and connected in the housing 2. In order to enable a low bearing retention, it is provided for the manufacture of a Bourdon tube pressure gauge 1 that the connecting element 18 and/or the spring carrier 4 has a round shoulder 17, 23 and the shoulder 17, 23 is inserted into a radial bore 7 of the housing, wherein first a connection is made between the shoulder 17, 23 of the connecting element 18 and spring carrier 4 and then a connection of the shoulder 17, 23 to the housing 2.

Abstract: A connecting pole for an accumulator having a pole sleeve (1) which can be inserted in a sealed manner into a plastic housing part (8) of an accumulator housing and makes electrical contact with a cell connector (2), and having connecting elements for electrical connection of the pole sleeve (1) to an electrical conductor (3), with the electrical connection being secured by means of a mechanical lock against becoming loose. For this purpose, a contact-making element (5; 9) is provided on the pole sleeve (1) and is firmly connected to it, and on which a locking element (6; 10) can be placed with an interlock and/or a force fit in order to mechanically lock the electrical connection between the pole sleeve (1) and the electrical conductor (3).

Abstract: The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for hydraulic fluid. According to the invention, the housing (2) is tubular and (when viewed in cross-section) point symmetrical, e.g. cylindrical, square, triangular or polygonal. The advantage of the hydraulic pump unit is that is can be positioned and transported in the receptacles of conventional portable tank carriers, in particular for the tanks of protective breathing apparatus.

Abstract: A connecting pole for an accumulator having a pole sleeve (1) which can be inserted in a sealed manner into a plastic housing part (8) of an accumulator housing and makes electrical contact with a cell connector (2), and having connecting elements for electrical connection of the pole sleeve (1) to an electrical conductor (3), with the electrical connection being secured by means of a mechanical lock against becoming loose. For this purpose, a contact-making element (5; 9) is provided on the pole sleeve (1) and is firmly connected to it, and on which a locking element (6; 10) can be placed with an interlock and/or a force fit in order to mechanically lock the electrical connection between the pole sleeve (1) and the electrical conductor (3).

Abstract: The invention relates to a portable hydraulic pump unit (1) comprising a housing (2), a pump (5), a drive motor (6) for the pump (5), in particular in the form of an electric drive motor, in addition to a reservoir (13) for hydraulic fluid. According to the invention, the housing (2) is tubular and (when viewed in cross-section) point symmetrical, e.g. cylindrical, square, triangular or polygonal. The advantage of the hydraulic pump unit is that is can be positioned and transported in the receptacles of conventional portable tank carriers, in particular for the tanks of protective breathing apparatus.

Abstract: The invention relates to a rescue apparatus 1 with two tool halves 4, 5 that are arranged swingably on a head component 2, which tool halves in each case display a working tip 6, at least one working tip 6 being attached to the tool half 4, 5 so as to be longitudinally displaceable.

Abstract: The invention relates to a rescue apparatus 1 with two tool halves 4, 5 that are arranged swingably on a head component 2, which tool halves in each case display a working tip 6, at least one working tip 6 being attached to the tool half 4, 5 so as to be longitudinally displaceable.

Abstract: The invention relates to a lifting device for lifting heavy loads, e.g. derailed rail vehicles, for permanent or temporary installation, having at least one cylinder, in particular hydraulic cylinder, for actuating a mechanical ram, in which device cylinder 2 and ram 3 are separate from one another and the ram 3 is accommodated in a guide tube 4.

Abstract: The invention relates to a lifting device for lifting heavy loads, e.g. derailed rail vehicles, for permanent or temporary installation, having at least one cylinder, in particular hydraulic cylinder, for actuating a mechanical ram, in which device cylinder 2 and ram 3 are separate from one another and the ram 3 is accommodated in a guide tube 4.

Abstract: The invention concerns a membrane for a pressure sensor. The membrane has, on a flat central face (26), an annular attachment face (12), which is disposed concentric to the central face (26), and a non-flat connecting face (54), which links the central face (26) with the edge face (12). The connecting face (54) is formed from at least one annular step (36, 44, 52), which consists of one flat annular face (32, 40, 48) and one truncated-cone-shaped step face (30, 38, 46), which connects radially inward to the annular face. The annular faces (32, 40, 48) and the central face (26) lie in planes parallel to each other, whereby the heights (h1, h2, h3) of the step faces (30, 38, 46) measured perpendicular to the plane of the central face are very small in relationship to the width of the respective step. This stepped design of the membrane results in a high linearity of the characteristic of the membrane pressure sensor and at the same time to a steep slope of the characteristic in its linear region.

Abstract: A membrane pressure sensor has an assembly comprising a thin membrane and a base, on which an annular joining face is formed. The membrane has a waved edge region in which numerous annular wave troughs and wave crests succeed one another alternatingly in the radial direction. The waved edge region of the membrane is attached to the joining face of the base. The wave crests of the edge region form numerous annular protrusions on the side turned away from the joining face, which permit a high sealing action when the assembly is connected with an annular flange having a measurement material space. When the joining face is flat, at least all wave troughs of the waved edge region of the membrane are circumferentially soldered to the joining face.

Abstract: The invention relates to a displacement device for the horizontal displacement of heavy loads, especially of derailed rail vehicles or the like, having a lifting cylinder and a preferably hydraulically driven displacement mechanism, which allows the position of the load raised by the lifting cylinder to be varied, the lifting cylinder (2) being borne by a slide (6) which is horizontally movable, preferably in two opposite directions, the slide being disposed displaceably on the surface of a support and the piston rod (11) of a displacement cylinder arrangement being fixedly connected to the support without the one end of the piston rod (11) being latch-locked to the support in a displacement-dependent manner.

Abstract: A pressure guage connection for connecting a pressure sensing device such as a manometer or an electrical pressure detector to a pressurized vessel or conduit is disclosed. The connection element constitutes a cylindrical stem designed in one piece with the device carrier, with said cylindrical stem having a ring-type flange at its end. The ring-type flange places an attachment element to the cylindrical stem in an undetachable manner. The attachment element also has a deformation portion which is deformable in the radial direction after the placement onto the cylindrical stem, with a shoulder being formed as a result of the deformation and with the attachment element resting against the ring-type flange via this shoulder. The attachment element can be a clamping nut or a cap screw.

Abstract: The invention relates to a vanadium/phosphorus mixed oxide catalyst, a process for its preparation and its use for the preparation of maleic anhydride.The catalyst according to the invention is prepared by reacting a vanadium(V) compound with phosphoric acid and/or a compound forming phosphoric acid with heating, optionally in the presence of water, and subsequently treating the product obtained after the reaction with organic solvents and/or diluents having reducing activity, optionally in the presence of a promoter, at an elevated temperature.

Abstract: A process for the recovery of maleic anhydride from distillation residues containing the same is described whereby a residue containing phthalic anhydride is added to the residue of maleic anhydride prior to or after distillation of the maleic anhydride residue. By such a process maleic anhydride recovery is improved and the distillation residue remaining from distillation of the maleic anhydride out of the maleic anhydride residue remains removable by simple mechanical means from the distillation vessel.

Abstract: In a cigarette lighter including a housing containing an ignition mechanism, a cap-type member is pivotally mounted on the open end of the housing. The cap-type member includes a lug extending outwardly through an opening in the housing. The lug bears against an edge of the opening and the edge provides a fulcrum about which the lug and, in turn, the cap-type member pivot into the housing. The cap-type member is in engagement with the ignition mechanism so that it actuates the ignition mechanism when it is pivoted into the housing.

Abstract: In a cigarette lighter with a piezo-electric ignition mechanism and an electrode, the electrode is secured in an open-topped recess in a holder by a pin. The electrode is shaped to fit between the wall of the recess and the pin. A head on the pin forms a cover for the recess.

Abstract: Hydrocarbons containing from 4 to 20 carbon atoms are oxidized with a gas containing molecular oxygen in the presence of a catalyst and/or auxiliary agents. The resulting reaction mixture is saponified with an aqueous alkaline solution and the resulting alkaline solution containing organic impurities is subjected to liquid phase oxidation with a gas containing molecular oxygen in at least a stoichiometric quantity sufficient for completely burning the organic ingredients, the oxidation taking place in a reaction zone heated to at least 200.degree.C under a pressure sufficient to keep at least some of the water in the liquid phase. The alkali carbonate/bicarbonate solution formed is recycled to the hydrolysis stage.