Abstract: A handle (10) for controlling a machine, has a largely vertical shaft (12) forming a grip part (11) and has an upper end forming a receptacle (14) that holds switch units (15-17) and a lower end forming a hand rest (20). The hand rest can be adjusted along the shaft (12) and can be detachably clamped to the shaft. The hand rest (20) comprises front and rear rest part (26, 27) that are pivotally, or swivelably, connected to one another. To prevent unintentional opening of the hand rest (20) by axial pressure on the latter, the two rest parts (26, 27) can be moved relative to one another in the axial direction to effect a locking and unlocking of their relative pivotabilities.

Abstract: A rocker switch (10) is provided with a mechanical switch unit consisting of a switch housing (11) made of plastic, a switching element (14) supported in spring-loaded manner on said switch housing so as to be capable of moving back and forth, and an actuating rocker (16) connected to the switching element (14), and also with limit-stop elements (48, 49, 51, 52) for limiting the actuating angle of the actuating rocker (16), and with an electrical switch unit. In order to obtain variable actuating angles and overcompression functions, the invention provides that the actuating rocker (16) is provided with an overcompression element (36) which in one or both of the actuating directions comes to be operationally connected to an overcompression stop (46, 47) on the switch housing (11) before the limit-stop elements (51, 52) come into operation.

Abstract: Improved reactors for catalytic, exothermic gas-phase reactions, which comprise, viewed in the flow direction of a feed gas, an inlet zone (1), a reaction zone (2) containing at least one catalyst (4) an outlet zone (3) for the product gas, are described. The reactors are provided in the region of the inlet zone (1) or in the region of the inlet zone (1) and the reaction zone (2) with means, for example an insulating liner (6) and/or apparatuses for the transport of cooling media, which reduce heat transport from the reaction zone (2) into the inlet zone (1) and thus reduce the risk of preignition of the feed gas mixture used or occurrence of undesirable secondary reactions in the inlet zone (1) and/or the interior walls of the reactor in the region of the inlet zone (1) or in the region of the inlet zone (1) and the reaction zone (2) consist of inert material.

Abstract: A control device for controlling a machine or similar vehicle. The control device includes a control lever, a fixed console upon which the control lever is movably mounted about at least two intersecting axes, a plurality of crossing holders mounted to the fixed console, each crossing holder having a longitudinal slit for guiding the control lever, and a mechanical device having force modifying points configured to be detected by tactile means during any movement of the control lever, wherein the mechanical device is positioned between the fixed console and the crossing holders, and above an installing plane of the fixed console, and wherein the intersecting axes of the crossing holders pass below an installation plane of the fixed console.

Abstract: The present application pertains to the use of bromelain preparing a medicament for increasing the IL-(8) level in an individual so as to reduce or prevent inflammation in said individual and as an adjuvant therapy during wound healing processes.

Abstract: By a method and a device for preventing corrosion on and in the region of a gas inlet nozzle during nitric acid condensation, contact of the condensing gas with the nozzle and with the surroundings of the nozzle are supposed to be minimized. This is achieved in that the gas inlet nozzle has a sleeve on the inside in the transition region to the interior of the condenser, by which sleeve a gas inlet orifice in the form of an annular gap is formed, whereby the annular space is provided with at least one feed opening for secondary air, so that an enveloping flow of secondary air is produced around the entering NO gas.

Abstract: A process is described for reducing the NOx concentration and N2O concentration from the residual gas from nitric acid production. The process encompasses the passing of the residual gas leaving the absorption column, prior to entry into the residual gas turbine, through a combination of two stages. The first stage here reduces the NOx content and the second stage the N2O content of the gas, the NOx/N2O ratio prior to entry of the gas into the second stage being in the range from 0.001 to 0.5, and this gas being brought into contact in the second stage with a catalyst which is substantially composed of one or more iron-loaded zeolites.

Abstract: The disclosure involves a method for reducing the content of NOx and N2O in gases. The method includes the conduction of a gas containing N2O and NOX over a series of two catalyst beds containing of one or more zeolites charged with iron followed by the: addition of a reduction agent for NOX between the catalyst beds. The first catalyst bed reaction zone is used to degrade the N2O and the catalyst bed second reaction zone reduces the NOX and breaks down at least part of the remaining N2O. The inventive device comprises at least one radially traversed catalyst bed.

Abstract: The invention relates to a thermostatic expansion valve having a valve element (33) which, for the throughflow of the refrigerant, closes and moves in the opening direction a valve seat (32) of a passage opening (29) arranged between the supply opening (27) and the discharge opening (31), and which is assigned to a first actuating element (36), the first actuating element (36) comprising a chamber (38) which is delimited with a first active face (37) and which contains a control charge (41), wherein an actuating element (46) is provided, which is thermally activated independently of the high pressure, the actuating movement of which actuating element (46) is coupled in terms of movement to the first active face (37) of the first actuating element (36) when a temperature-dependent actuating movement of the thermally activatable actuating element (46) acts counter to the actuating movement of the first active face (37) of the first actuating element (36), with a temperature threshold value of the thermally acti

Abstract: A rocker switch (10) is provided with a mechanical switch unit consisting of a switch housing (11) made of plastic, a switching element (14) supported in spring-loaded manner on said switch housing so as to be capable of moving back and forth, and an actuating rocker (16) connected to the switching element (14), and also with limit-stop elements (48, 49, 51, 52) for limiting the actuating angle of the actuating rocker (16), and with an electrical switch unit. In order to obtain variable actuating angles and overcompression functions, the invention provides that the actuating rocker (16) is provided with an overcompression element (36) which in one or both of the actuating directions comes to be operationally connected to an overcompression stop (46, 47) on the switch housing (11) before the limit-stop elements (51, 52) come into operation.

Abstract: A handle (10) for controlling a machine, has a largely vertical shaft (12) forming a grip part (11) and has an upper end forming a receptacle (14) that holds switch units (15-17) and a lower end forming a hand rest (20). The hand rest can be adjusted along the shaft (12) and can be detachably clamped to the shaft. The hand rest (20) comprises front and rear rest part (26, 27) that are pivotally, or swivelably, connected to one another. To prevent unintentional opening of the hand rest (20) by axial pressure on the latter, the two rest parts (26, 27) can be moved relative to one another in the axial direction to effect a locking and unlocking of their relative pivotabilities.

Abstract: The invention relates to a method for the production of nitric acid having a concentration of between 50 and 76%, from ammonia and gas containing oxygen, under pressure, according to a single pressure method or dual pressure method. The expansion of the residual gas takes place in at least two stages in a work efficient manner. At least one device for heating the previously expanded gas to a temperature of more than 450° is disposed between every other expansion stage, using waste heat from the production process of nitric acid.

Abstract: A process for producing nitric acid of a concentration in the range of 68 to 76% by weight, using the mono-pressure or the dual-pressure process in which the ammonia feedstock is combusted with the aid of compressed process air. The water vapour content of the process air used for combustion and/or stripping and imported from outside the system, is reduced in this process.

Abstract: The method comprises the following steps: conduction of the gas containing N2O and NOx over a series of two catalyst beds consisting of one or more zeolites° charged with iron: addition of a reduction agent for NOx between the catalyst beds; setting of a temperature of less than 500° C. in the first and second catalyst bed; setting of a gas pressure of at least 2 bar in the two catalyst beds; and the selection of a space velocity in the first and second catalyst bed that achieves a degradation of the N2O content of the gas in the first catalyst bed by a maximum of up to 90%, in relation to the N2O content at the entrance to the catalyst bed and an additional degradation of the N2O content of the gas in the second catalyst bed by at least 30% in relation to the N2O content at the entrance to the second catalyst bed. The first reaction zone is used to degrade the N2O and the second reaction zone reduces the NOx and breaks down at least part of the remaining N2O.

Abstract: A switch has a housing (11), a pair of switching units (17, 18) with buttons (19) that can be depressed to operate each switch unit, and a rocker (23) pivotally mounted on the housing to pivot clockwise and counterclockwise from a neutral position. An elastomeric diaphragm (30) mounted on a top wall (12) of the housing, extends across an aperture (13) in the housing, with first and second lower parts (28, 29) of the rocker passing through the diaphragm to rest closely above the buttons on the switch units. The diaphragm not only largely seals the switch units, but biases the rocker towards the neutral position.

Abstract: A control has a pivotal part with an operating surface that can be depressed by a person's foot or hand, with pivoting being sensed by a pivot sensor. A spring-operated mechanism urges the pivotal part toward an initial position while allowing it to pivot in both clockwise and counterclockwise directions from the initial position, the sensor indicating the amount of pivoting in either direction from the initial position. A damping unit for limiting the speed of depression includes a cylinder that contains fluid and a plunger that is depressed by the pivotal part into the cylinder to displace the fluid.

Abstract: The invention relates to a method for the production of nitric acid having a concentration of between 50 and 76%, from ammonia and gas containing oxygen, under pressure, according to a single pressure method or dual pressure method. The expansion of the residual gas takes place in at least two stages in a work efficient manner. At least one device for heating the previously expanded gas to a temperature of more than 450° is disposed between every other expansion stage, using waste heat from the production process of nitric acid.

Abstract: The present invention relates to the use of bromelaine proteases for inhibiting blood coagulation, especially for stimulating the production of plasmin, for inhibiting the production of fibrin and for inhibiting the adhesion of human thrombocytes on endothelilum cells. Especially the basic proteases isolable from raw bromelaine have proved to be particularly suitable proteases.

Abstract: A method and device for removal of N2O in nitric acid production are disclosed. The device is arranged after a heat exchanger, post ammonia burning, before the absorption tower and contains a catalyst, which essentially comprises one or several iron-loaded zeolites.

Abstract: The present application pertains to the use of bromelain preparing a medicament for increasing the IL-(8) level in an individual so as to reduce or prevent inflammation in said individual and as an adjuvant therapy during wound healing processes.