Abstract: Described is a utility vehicle, in particular an agricultural tractor, with a front axle (3), which can be driven by a drive element of a first mulit-disc clutch (11), connected in a driven manner to the drive train (2) and a power take-off shaft (4) which can be driven by the drive train (2) at speed proportionately to the speed of the vehicle over the ground (ground speed power take-off). In order to keep expenditure low on the control of the disc clutch (11) and the power take-off shaft (4), it is proposed that the power take-off shaft can be driven at a speed proportional to the speed of the vehicle over the ground by a second multi-disc clutch (12) which has a drive element connected in a driven manner to the drive train (2), and that both multi-disc clutches (11, 12) are actuated in common.

Abstract: A twin-clutch device includes first and second clutch actuating mechanisms; a first clutch disconnection/connection control mechanism for exerting on the first clutch actuating mechanism a controlling force for switching disconnection/connection of the first clutch actuating mechanism; and a second clutch disconnection/connection control mechanism for exerting on the second clutch actuating mechanism a controlling force for switching disconnection/connection of the second clutch actuating mechanism. The first and second clutch disconnection/connection control mechanisms include control actuating members that are supported on a fixing member in a non-rotating state while being allowed to move in a direction along rotation axes of a first driven rotary member and second driven rotary member, the control actuating members being respectively connected to first and second clutch actuating mechanisms via bearings.

Abstract: A twin clutch device wherein a second clutch is arranged coaxially and radially inside of a first clutch outer which forms an annular plate portion. One clutch inners of both clutches is arranged between a clutch member which constitutes a portion of the outer of the first and second clutches and an annular plate portion. Lifter pins have axes arranged parallel to a rotary axis of first and second clutches and axially movably penetrate both clutch inners to bring one ends thereof into contact with pressure plates. First and second drive control members are capable of applying control forces to disconnect the first and second clutches against spring forces of first and second clutch springs. A second clutch outer is rotated together with the first clutch outer and is arranged coaxially with the first clutch. A pair of clutch outers are connected in a relatively non-rotatable manner with each other.

Abstract: To reduce the axial size of a twin-clutch device including first and second clutch actuating mechanisms arranged in parallel along the axes of first and second driven shafts that are coaxial. A first clutch disconnection/connection control mechanism is provided for switching disconnection/connection of the first clutch actuating mechanism. A second clutch disconnection/connection control mechanism is provided for switching disconnection/connection of the second clutch actuating mechanism. A second clutch disconnection/connection control mechanism is arranged between first and second clutch inners so that at least a part of the second clutch disconnection/connection control mechanism is accommodated in at least one of first and second cylinder portions.

Abstract: A starting clutch includes a clutch inner that is secured to and supported by a drive plate boss fitted to a crankshaft near the end thereof. A one-way clutch is fitted to the outer periphery of the cylindrical portion extending inwardly. A clutch outer forms an annular portion that covers the outer periphery of the drive plate. A hollow disk portion covers the inner surface and is rotatably supported by the crankshaft. The one-way clutch is clamped by the inner peripheral edge of the hollow disk portion of the clutch outer from the outer peripheral side in cooperation with the cylindrical portion of the drive plate boss, and the inner peripheral edge of the hollow disk portion of the clutch outer abuts against a flange portion of the drive plate boss extending along the inner surface of the drive plate in the centrifugal direction thereof.

Abstract: A new transfer case with a new and improved clutch actuator and operator is disclosed. The operator is operably connected to a first element of a ball ramp type transfer case clutch actuator that can be rotated, relative to a second element of the clutch actuator, to effect or release compression in the disk pack of the transfer case clutch. The operator comprises a moving coil linear actuator having a stationary magnet and a coil that is mounted adjacent to the stationary magnet for reciprocating movement which is controlled by controlling the flow of current through the coil. Linear movement of the coil is translated into rotational movement of the first element of the clutch actuator by a connecting rod.

Abstract: A clutch mechanism includes: an input rotary member for receiving an input torque; a hub for receiving the torque from the input rotary member; first friction discs held by the hub; second friction discs arranged to be pressed against the first friction discs to achieve a torque-transmitting engagement therebetween; a drum supporting the second friction discs and stopped by the drum support bearing against movement in one axial direction; and an output rotary member for receiving the torque from the drum. Transmission of the torque from the drum to the output rotary member is achieved by a spline coupling therebetween. Axial movement of the drum in one direction is stopped by an end surface of a drum support bearing mounted in a housing. The hub is splined to the input rotary member for axial movement relative to the rotary input member.

Abstract: To provide a clutch release mechanism which can restrain vibrations of a ball while allowing the ball to be loosely fitted when it is not in operation to ensure the engaged state of a clutch. A clutch release mechanism is configured in such a manner that a gap is defined between a clutch cam plate or a receiving plate and a ball unit so that the ball unit can slide between the clutch cam plate and the receiving plate. An urging spring is provided for urging the ball unit in the direction of being slid toward the clutch cam plate. A C-ring for restricting the ball unit from coming out from a boss member is attached to the peripheral portion of the boss member.

Abstract: The present invention is a wheel conveyor comprising side frames, plate-shaped stays provided with wheel unit attachment grooves at an upper surface, and wheel units having fixed projections capable of being inserted into the wheel unit attachment grooves provided on an upper surface of the plate-shaped stays, the wheel units comprising two wheel attachment bodies, and a wheel rotatably provided between the two wheel attachment bodies, wherein, on plate-shaped stays provided spanning in a longitudinal direction across the side frames, one or a plurality of wheel units are detatchably attached in a line arrangement in a longitudinal direction of the side frames, and one or a plurality are detatchably attached in a line or interleaved arrangement in a widthwise direction.

Abstract: A coin processing device includes: a passage along which a coin is transferred from an upstream-end toward a downstream-end thereof; an opening formed on the passage; a gate including a guide section that constitutes a part of the passage while the opening is closed and has a stepped portion formed at a portion of the guide section which is closer to the downstream-end of the passage, the gate being tilted so as to lift a portion thereof which is closer to the upstream-end of the passage in a state where the opening is closed to open the opening; and a gate mechanism for causing the coin to fall though the opening by tilting the gate. In this coin processing device, while the gate is open, the stepped portion receives a portion of the coin in the direction of the upstream.

Abstract: Comb plate (18) for a passenger conveyor (2) with a conveyor band and a moving flange a number of teeth (24) arranged on it essentially parallel to one another across the width of the conveyor band, which mesh in use with grooves (6) provided on the upper surface of the conveyor band characterised by a deflector guard (26) which is arranged at the lateral edge of the comb plate (18) and extends a certain height above the upper surface of the comb plate (18).

Abstract: People conveyor (2) including an endless conveyor band (4) extending through an inclined portion (6), a first and a second turnaround portions (8) and a return portion (5) of an endless path and comprising a plurality of steps (10) connected to and driven by a step chain (12), the steps (10) comprising a step roller (18), the people conveyor (2) further including a step roller track (20) for guiding the step roller (18), the step roller track (20) extends along the path of the conveyor band (4) and has an inner and an outer rails (24, 22) for supporting the step roller (18), and a device (20) for restraining the step roller (18) against one of the inner and outer rails (24, 22).

Abstract: Disclosed is an oscillating system arranged so that a gravity center of a movable member and a torsional axis of a resilient support are easily registered with each other to prevent deformation of the movable member due to its dead weight or deviation of deformation from symmetrical deformation, wherein the oscillating system includes a substrate 301, a movable member 302 with hard magnetic members 310 and 311, resilient supports 304 and 305 for supporting the movable member for torsional vibration about a torsional axis 312 with respect to the substrate, and a magnetic field producing device for driving the movable member relative to the substrate, wherein the movable member 302 has recesses 306 and 307, and wherein the hard magnetic members are fixed while their end portions are aligned with end faces 308 and 309 corresponding to the recesses.

Abstract: An induction subsystem for a conveyor sortation system and method of inducting articles includes providing a plurality of tandem conveying surfaces. The speeds of the conveying surfaces are individually controllable. At least one sensor is provided for sensing articles on at least one of the conveying surfaces. A control is responsive to the at least one sensor for controlling the speeds of said conveying surfaces in a manner that controls relative positions of articles. The control defines a plurality of feedback-gapping algorithms. Each of the feedback-gapping algorithms is defined between adjacent conveying surfaces for adjusting relative speeds of those adjacent conveying surfaces as a function of at least one parameter of the articles. The control controls relative positions of articles with the feedback-gapping algorithms beginning with a pair of adjacent conveying surfaces and cascading through adjacent pairs of adjacent conveying surfaces.

Abstract: A roller cleaning system (10) for an oven (20) equipped with a series of motorized rollers (21) each of which is in turn connected to a relative motor-reducer (24) for rotation activation, in turn connected to a relative frequency converter (25) driven by a respective control and activation device (26), said roller cleaning system (10) comprising a control and regulation unit (14) to independently control the rotation rate and direction of each roller of the series of motorized rollers (21) for the advancing of one or more flat blooms (40) and for cleaning at least one roller (34) causing the detachment of the flakes of oxide therefrom by scraping it against a flat bloom (40) with a variation in the rotation rate and/or direction of the same.

Abstract: A device for stopping a continuous product stream of the products of a rotary press, with a height conveyor which has a lower loading region to which the products are supplied via a first conveying means, and an upper delivery region, from which the products are conveyed to a reception container via a second conveying means, wherein on the downstream side of the delivery region of the height conveyor a switch is assigned to the second conveying means, a third conveying device being connected to this switch, the lower end of which is assigned to the loading region of the height conveyor, so that the products are supplied to the second or third conveying means depending on the condition of the switch

Abstract: A belt-conveyor device includes a detecting unit that detects a belt position in a width direction of the endless belt for a plurality of times within more than a cycle of the endless belt, the width direction being a direction orthogonal to direction of travel of the endless belt; an average calculating unit that calculates an average belt position from the belt positions detected by the detecting unit; a storing unit that stores therein a plural sets of correction values and belt positions; and a meander correcting unit that corrects meander of the endless belt based on a correction value that corresponds with the average belt position in the storing unit.

Abstract: A power tool includes an optical speed control switch for controlling the variable speed of an electrical motor in the tool. The tool includes a moveable member having a reflective surface and the moveable member traversing a distance between a stop position and a full speed position, a biasing member operatively coupled to the moveable member to bias the moveable member toward the stop position, an optical signal generator for generating an optical signal, the optical signal generator being oriented so that the optical signal is directed toward the reflective surface of the moveable member, and a speed control signal generator for generating a speed control signal that corresponds to a reflection of the generated optical signal reflected by the reflective surface of the moveable member.

Abstract: A bendable, washable, watertight key switch assembly is disclosed to include a polymeric flexible top layer made, which has key caps and a conducting member respectively bonded to the inside wall of each key cap, a polymeric flexible bottom layer defining with the flexible top layer an accommodation space, and a thin film circuit board set in the accommodation space and sealed to the flexible top layer and the flexible bottom layer with an adhesive, the thin film circuit board having printed switch contacts corresponding to the conducting members in the key caps for the contact of the associating conducting members to output a corresponding electric signal and a cable electrically connected to the printed switch contacts and extended out of the flexible top layer and the flexible bottom layer at one side for connection to an external electronic device.

Abstract: An elongate contact switch with several partial contact areas has associated illumination means for indicating the actuation mode and also the actuation point to an operator in order to increase operational safety. The illumination means are directly associated with individual partial contact areas or can indicate the progress of movements for operating the contact switch by applying a finger and pulling the same along a contact area. Moreover, malfunctions can be indicated.

Abstract: The present invention provides a long-life push button switch having no variations in operation characteristics. A push button switch includes: a housing formed by a base in which fixed contacts are disposed on a bottom face, and a cover assembled to the base; an operating member slidably inserted in the axial direction in the housing; a guiding part which is formed obliquely from a ceiling face of the cover to the inside and along which the tip of an operation piece of the operating member slides; and a movable contact housed in the housing and pressed against the fixed contact, thereby opening a circuit. The guiding part along which the tip of the operating piece of the operating member can slide and a reinforcing part continued from the ceiling face of the cover at least on one side of the guiding part are formed at the edge of a through hole formed in the ceiling face of the cover.

Abstract: A button is applied to an electronic apparatus with a circuit board. The button includes a function part, at least a status switching part, a flexible member and a pressing part. The function part is disposed on the circuit board, and the status switching part is disposed on the circuit board. The pressing part is connected to the flexible member. When the user presses the pressing part by applying an external force, the function part makes electrical contact with the circuit board to activate a specific function. If the external force is increased, the status switching part will make electrical contact with the circuit board to activate another specific function.

Abstract: A switch panel including a switch unit is mounted on a dashboard of an automotive vehicle. The switch unit has switches for operating devices mounted on the vehicle and ornamental members disposed between the switches. The ornamental member is composed of a base portion and a portion extending from the base portion. Front surfaces of the extending portion and the base portion are covered with an ornamental light-reflecting layer. The front surface of the extending portion is positioned flush with a touch surface of the switch. The front surface of the base portion is sloped so that light incident thereon is reflected toward a direction not in parallel to a gap formed between the extending portion and the switch. The light reflected on the sloped surface is invisible while the front surface of the extending portion is clearly visible, enhancing ornamental design effects of the switch unit.

Abstract: A driving bracket for use in the power transmission and distribution industry that uses an electrically conductive portion to route current to a handle of a current interrupter when the current interrupter shunts current away from opening electrical switch contacts. The electrically conductive portion is mounted on a swing arm assembly and the driving bracket and the handle eliminate the previously used dedicated electrical contacts as well as various internal wiring required to connect those contacts.

Abstract: A current interrupter for use in the power transmission and distribution industry that uses an electrically conductive handle to route current through the current interrupter when the current interrupter shunts current away from opening electrical switch contacts. The electrically conductive handle eliminates the previously used dedicated electrical contacts. The current interrupter has a spring, known as a charging spring, to enhance its opening sequence. The charging spring in conjunction with the guide springs in the interrupter provides an added opening force allowing the internal contacts of the current interrupter to open faster, thus reducing the amount of internal arcing experienced by the current interrupter. The interrupter has a driving bracket a portion of which is electrically conductive. As the handle moves along the conductive portion of the driving bracket, the contacts remain closed even as the handle approaches that point on the bracket past which the contacts will separate.

Abstract: A transportation-robust bi-stable latch mechanism preserves low actuation forces by means of an auxiliary mechanism blocking the effects of shock forces during transportation.

Abstract: A circuit for actuating a switch includes a conductive liquid switch comprising a conductive liquid droplet and a control processor configured to receive a switching signal and configured to provide at least one actuation pulse to the conductive liquid droplet to initiate movement of the conductive liquid droplet based on a duration of a time period between the switching signal and a preceding switching signal.

Abstract: A foil-type pressure sensor includes a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer, the spacer comprising at least one recess defining an active area of the pressure sensor. At least two electrodes are arranged in the active area of the pressure sensor between said first and second carrier foils in such a way that, in response to a pressure acting on the active area of the pressure sensor, the first and second carrier foils are pressed together against the reaction force of the elastic carrier foils and an electrical contact is established between the at least two electrodes. According to the invention, at least one of the carrier foils includes a multi-layered configuration with at least two layers of different materials.

Abstract: An exemplary frame assembly (2) includes a frame (21), plural posts (212), a button member (22), and plural push buttons (222). The frame includes a bottom wall (211). The posts are formed at the bottom wall. The button member includes a fixing board (223) having plural fixing holes (225). Plural protuberances (2252) are formed on an inner wall surrounding each fixing hole. Each push button connects to the fixing board by an elastic connector (221). Each post is interferentially engaged in a corresponding fixing hole.

Abstract: A membrane switch solves the problem of requiring a spacing layer or spacers as in the prior art, and includes an upper membrane, a lower membrane. The upper membrane has an upper elastic tongue, an upper hollow portion formed around the upper elastic tongue, and a first conductive trace printed on a top surface of the upper membrane with a first contact formed on the upper elastic tongue. The lower membrane has a lower elastic tongue corresponding to the upper elastic tongue, a lower hollow portion formed around the lower elastic tongue, and a second conductive trace printed on a bottom surface of the lower membrane with a second contact on the lower elastic tongue. The lower elastic tongue penetrates through the upper hollow portion of the upper membrane and elastically extends above the upper elastic tongue. When the lower membrane is depressed, the second contact contacts the first contact.

Abstract: According to one embodiment, an electronic apparatus includes a housing and a button. The housing contains a switch. The button is arranged in the housing, opposed to the switch and configured to operate the switch. The switch is positioned off a center of the button.

Abstract: The invention is a process for the purification of ethanol. In one embodiment the process comprises boiling a degassed beer feed (106) in a pre-boiler (110) to provide a vapor by-pass fraction (112) that by-passes the conventional beer column and is fed into the rectifier column (124). The process allows free capacity in the rectifier column of new or established plants to be filled by ethanol-water vapor and/or condensate streams that do not originate from the beer column.

Abstract: An apparatus for manufacturing carbon nanotubes includes: a reaction chamber having an inlet at a bottom and an opposite outlet at a top thereof, and a substrate region configured for accommodating a substrate for growing carbon nanotubes thereon; an electric field generating device configured for generating an electric field around the substrate region, the electric field being substantially perpendicular to the substrate; and a magnetic field generating device configured for generating a magnetic field around the substrate region, the magnetic field being substantially perpendicular to the substrate.

Abstract: A display element comprising a single layer of porous material and a discrete drop of liquid. Application of a voltage between the liquid and the layer causes movement of the liquid and consequential optical changes to the element.

Abstract: A machine 1 for treating substrates S comprises an infeed area 6, at least a first process chamber 2, a second process chamber 3, a third process chamber 4, and a fourth process chamber 8 for the execution of a treatment, for example the application of a coating to a substrate S for coating, as well as an outfeed area 7. The four process chambers 2,3, 4 and 8 are connected to a central transport chamber 5. The first process chamber 2 fourth process chamber 8 are each arranged between one of the lock areas 6 or 7 and the central transport chamber 5 in series. The second process chamber 3 and the third process chamber 4 are connected in parallel and independently accessible from each other to the central transport chamber.

Abstract: A sputtering apparatus comprises a substrate unit that includes a substrate on which a target material is deposited in a chamber and a target unit on which a plurality of target sections formed of the target material are arranged. The sputtering apparatus further comprises a cathode plate that supplies electric power to surfaces of the plurality of target sections and a plurality of gas supply ports provided on regions between the plurality of target sections.

Abstract: A sputter apparatus with a pipe cathode is arranged such that the supply of power, cooling fluid and other media to the pipe cathode takes place via flexible lines or tubes which can be wound about a receptor. If the pipe cathode completes a pendulum movement, the lines and/or tubes are wound onto the receptor or wound from it. The pendulum movement of the pipe cathode is preferably such that the pipe cathode is rotated by a certain first angle in a first direction and subsequently by a certain second angle in a second direction, the second angle differing from the first angle. Methods for operating the sputter apparatus are also disclosed.

Abstract: A method for forming a metal film with a reduced surface roughness is described. A sputtering process is conducted using a metal target to deposit a layer of metal on a substrate, wherein the DC power density over the sputtered surface of the metal target is set higher than 5 W/inch2, and the layer of metal has a thickness of 4000? or less.

Abstract: The disclosure relates to a well cooler (3) for cooling a cooling medium of a driving unit on a ship (1), such as a marine motor, by means of outboard water (8), which well cooler (3) can be placed in a well space (2) present in the (1), which lies at least partially below the outboard water level and which in open communication with the outboard water (8), the well cooler (3) comprising at least one cooling element (4) for the cooling medium, which extends into the well space (2) and which is surrounded by outboard water (8) during operation, and the ship (1) furthermore being provided with a cathodic corrosion protection system (10). The object of the disclosure is to provide a well cooler (3) of the above kind which on the one hand exhibits and retains an effective cooling efficiency, and which on the other hand is not affected by stray current corrosion, which reduces the life span of the well cooler.

Abstract: At present, the cathode stripping process as it is carried out today presents the disadvantage of being carried out manually or through equipment specially designed for this task, but inevitably it requires human intervention whether for stripping or classification. Due to the above a robot system has been developed to automate the process of cathode stripping process. The robotic system is composed mainly of a robotic manipulator (1) of at least 5 degrees of freedom, and a gripping mechanism (2) which allows to take a cathode, (3) from a feeding rack (4) located at one of its sides, and which moves the cathodes through a defined path to the stripping station (5), where synchronized with the carousel the cathode (3) stripping method from the base plate will take place in a sequential and programmed way through different operations of hammering, bending and separation.

Abstract: An apparatus for collecting and removing gases emitted by an aluminum reduction cell consists of at least one channel extending between a suction inlet and exhaust outlet. At least one curvilinear partition extends within the channel, so as to divide it into respective gas suction zones. Such zones are formed to change the direction of the gas flow from substantially vertical at the suction inlet to substantially horizontal at the exhaust outlet.

Abstract: An improved apparatus for treating plate-like work pieces with a designated chemical solution, including printed circuit boards, including (1) a tank for holding the chemicals, agitation frame and roller assembly, (2) a frame that holds two rollers covered in brush or sponge like material, (3) a guide rail assembly attached to a roller frame, (4) a slotted block attached to a guide rail (5) a disk with a bottom shaft coupling and top pin to move slotted block, (6) a low rpm motor that attaches to disk coupling.

Abstract: Simple and economic electrolytic synthesis of peracetic acid is performed, and cold drink containers, etc., are sterilized/cleaned with an aqueous solution of peracetic acid thus obtained. Peracetic acid is electrolytically synthesized from acetic acid and/or acetate and an oxygen-containing gas as starting materials in the presence of a solid acid catalyst in an electrolytic cell. An object to be cleaned is sterilized/cleaned with an aqueous solution of peracetic acid thus obtained. Peracetic acid can be simply obtained at a reduced cost. The sterilizing/cleaning of an object to be cleaned with peracetic acid can be conducted efficiently.

Abstract: It is described a finite interelectrodic gap-cell for oxygen evolving-electrochemical processes comprising a package of planar anodes secured to a rack and a package of planar cathodes intercalated to the anodes secured to a frame. The cathode package can be handled separately or jointly with the anode package by means of a lifting device. The cell is particularly useful in metal electrowinning processes and in softening processes of calcareous waters by microelectrolysis.

Abstract: So as to provide a target arrangement with improved mounting and dismounting ability, the target arrangement comprises a plate along a plane (E) which has a border (7) defined by a first wedge surface (5u) angled to the addressed general plane (E) and a second wedge surface (5l) which is substantially planar as well and angled with respect to the generic plane (E). The two wedge surfaces mutually convert in a direction along the addressed plane (E) and from a more central area of the plate outwardly.

Abstract: The invention provides an indium oxide-tin oxide powder which can be produced at low cost and which can provide a high-density sputtering target having a prolonged target life, and a sputtering target employing the powder. The indium oxide-tin oxide powder containing an In—Sn oxide as a predominant component is characterized in that the oxide powder contains no compound oxide (In4Sn3O12) detectable through X-ray diffraction and has a SnO2 solid solution amount in In2O3 of 2.3 mass or more, the SnO2 solid solution amount being calculated from the precipitated SnO2 content (mass %) obtained from the ratio between integral diffraction intensity attributed to In2O3 (222) and integral diffraction intensity attributed to SnO2 (110).

Abstract: The present invention provides a pulsed plasma arc source capable of applying diamond-like carbon coatings, other hard wear resistant coatings or metal coatings to a substrate. The pulsed plasma arc source is based on the use of a magnetron sputtering system for initiation of the pulsed arc discharge. The pulsed plasma arc source can be scale up to coat large substrates.

Abstract: The invention relates to a method for producing an electrode suitable for the sensitive and/or specific electrochemical detection of an analyte in an aqueous first liquid, said electrode being a composite electrode, a printed electrode or a carbon electrode which is superficially contacted with a hydrophobic second liquid prior to detection, and with the proviso that the electrode is not produced from a non-curing paste consisting of mineral oil and conductive particles only.

Abstract: The present invention provides a packaging structure of a gas detector and the method for making the same. The packaging structure of the gas detector includes a printed circuit board, a detection device and a ventilation cover. The detection device is attached to the printed circuit board by adhesive, and metallic wires are formed on the printed circuit board by wire-bonding process. The ventilation cover is positioned at the printed circuit board to cover the detection device. Signal terminals of the detection device are electrically connected with the contact terminals of the printed circuit board so as to test and check signals of the detection device. In this regard, the present invention is used to test and package a plurality of detection devices using one printed circuit board and without metallic terminals so that cost of the gas detector is significantly reduced.

Abstract: A device for measuring the pressure of a gas mixture composed of gas components has an amperometric sensor that works on the limiting current principle, having two electrodes connected to a direct voltage that are situated on a solid electrolyte, of which one electrode is covered by a diffusion barrier, and a measuring element for measuring the limiting current flowing via electrodes as a measure for the gas pressure. For the purpose of error-free measurement of the gas pressure in a gas mixture in which the concentration of the gas components fluctuates with time, means are provided which fix the mole fraction of a gas component, drawn upon for pressure measurement, that is present upstream of the diffusion barrier at a constant 100%, at least during the pressure measuring phase.