baber/WOPTO huggingface dataset:
Patent DE-10342898-A1 (DE)
Title: Hydrodynamischer Drehmomentwandler
Inventor: SASSE CHRISTOPH
IPC: F16H45/02
Filed: 2003-09-17
Abstract: Ein
hydrodynamischer Drehmomentwandler umfasst eine mit Arbeitsfluid
gefüllte
oder befüllbare
Gehäuseanordnung
(18), ein Pumpenrad (30), ein in der Gehäuseanordnung (18) angeordnetes
und bezüglich
dieser um eine Drehachse (A) drehbares Turbinenrad (26), eine Überbrückungskupplungsanordnung
(50) zur wahlweisen Bereitstellung einer Drehmomentübertragungsverbindung
zwischen der Gehäuseanordnung
(18) und dem Turbinenrad (26), wobei die Überbrückungskupplungsanordnung (58)
wenigstens ein mit der Gehäuseanordnung
(18) drehbares erstes Reiborgan (60, 62) und wenigstens ein mit
dem Turbinenrad (26) drehbares zweites Reiborgan (64, 66) aufweist,
welche zur Bereitstellung der Drehmomentübertragungsverbindung in Reibkontakt
miteinander bringbar sind, wobei wenigstens eines der Reiborgane
(60, 62, 64, 66) zur Erzeugung einer die Reiborgane (60, 62, 64,
66) wenigstens bereichsweise umströmenden Fluidzirkulation (Z)
ausgebildet ist.
Patent DE-10342955-A1 (DE)
Title: Construction of international freight containers has internal modular facility for inclusion of lighting and refrigeration system
Inventor: MANN HANS
IPC: E04H5/02
Filed: 2003-09-17
Abstract: The container (1) conforms to international design standards with wall panels reinforced (2) Additional components used to provide such as refrigeration, lighting and climate control (5,6) are available as modules that can be readily installed and connected to a built in power bus. Normal anchor points (7) are provided for loading and unloading.
Patent DE-10343818-A1 (DE)
Title: Climate control system for vehicle has heating capacity control unit to control capacity of heating element so that temperature of heating element is made to be higher than target temperature if double mode is selected
Inventor: ITOH SATOSHI
IPC: B60H1/00
Filed: 2003-09-22
Abstract: The climate control system has a foot mode for blowing air into the bottom of the passenger compartment, a face mode for the blowing air into the top of the compartment, and a double mode in which air is blown into both the top and the bottom. A heating element (32) is installed in a housing (80) for air flowing through the housing. A heating capacity control unit (90) controls the capacity of the heating element so that the temperature of the heating element is made to be higher than the target temperature if the double mode is selected.
Patent DE-10345203-A1 (DE)
Title: Brennstoffeinspritzventil
Inventor: STIER HUBERT
IPC: F02M51/06
Filed: 2003-09-29
Abstract: Ein Brennstoffeinspritzventil (1), insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine, mit einem piezoelektrischen, elektrostriktiven oder magnetostriktiven Aktor (2) und einem mit dem Aktor (2) in Wirkverbindung stehenden Ventilschließkörper (7), der mit einer Ventilsitzfläche (13) zu einem Dichtsitz zusammenwirkt, weist einen Koppler (3) auf, der einen ersten Koppler-Abschnitt (23) und einen zweiten Koppler-Abschnitt (24) hat. Die beiden Koppler-Abschnitte (23, 24) sind gegeneinander axial beweglich und stehen miteinander über ein in einem Hydraulik-Volumen (36) befindliches Hydraulikmedium in Wirkverbindung. Das Hydraulik-Volumen (36) steht mit zumindest einem Ausgleichsraum (14) zum Austausch von Hydraulikmedium in Verbindung. Zumindest einer der Koppler-Abschnitte (23, 24) ist mit einem Spiel (32), welches durch einen Spalt (25) gebildet ist, geführt. Zumindest ein Ausgleichselement (15) gleicht die temperaturbedingten Volumenänderungen des Hydraulikmediums aus, wobei das Ausgleichselement (15) das Hydraulik-Volumen (36) wenigstens teilweise begrenzt und/oder im Hydraulik-Volumen (36) angeordnet ist.
Patent DE-10345526-A1 (DE)
Inventor: SCHIEHLEN MATTHIAS
IPC: G06F17/21
Filed: 2003-09-30
Abstract: In a method for acquiring data from a machine-readable document for assignment to fields of a database, individual data are extracted substantially automatically from the document and entered into the corresponding database fields. If data cannot be extracted from the document with a desired degree of reliability for one or more particular database fields, then the steps are executed of displaying the document onto the display screen, displaying on the display screen the at least one or more database fields for which the data cannot be extracted with the desired degree of reliability, and executing a proposal routine with which string sections in the vicinity of a pointer movable by a user on the display screen are selected, marked, and proposed for extraction.
Patent DE-10346528-A1 (DE)
Title: Zündschaltung
Inventor: ITO MASAYASU
IPC: H05B45/50
Filed: 2003-10-07
Abstract: Eine Beleuchtungsschaltung für das Beleuchten einer Fahrzeuglampe (10) mit einer lichtemittierenden Diode enthält: einen Schaltregler (114) zum Anlegen einer Ausgangsspannung auf der Grundlage einer Energieversorgungsspannung, Empfangen von einer DC-Energiequelle, vorgesehen an der Außenseite hiervon, zu der lichtemittierenden Diode (30) zum Zuführen eines Versorgungsstroms zu der lichtemittierenden Diode; einen Anormalzustandsdetektor (120) zum Detektieren eines anormalen Zustands der Beleuchtungsschaltung auf der Grundlage zumindest einer Größe der Ausgangsspannung des Schaltreglers, des Versorgungsstroms und der Energieversorgungsspannung und eine Ausgabesteuereinheit (116) zum Steuern der Ausgangsspannung des Schaltreglers auf der Grundlage des Versorgungsstroms oder der Ausgangsspannung des Schaltreglers und zum Absenken der Ausgangsspannung des Schaltreglers in einem Fall, wo der Anormalzustandsdetektor den anormalen Zustand detektiert.
Patent DE-10349589-A1 (DE)
Title: Milling head for use in gear fabrication, is constructed from two head bases engageable together and each having spaced apart cutting blades
Inventor: WIDL GERHARD
IPC: B24B3/34
Filed: 2003-10-24
Abstract: A milling head is constructed from two detachable head bases (12,22) engageable together and rotatable around a common axis (11). Each head base has circumferentially spaced cutting blades (36). When the head bases join together, the blades of both bases alternate each other along the circumferential direction. Independent claims are included for the following (a) a cutting tool for a milling head; (b) and a grinding method of a milling head.
Patent DE-10350185-A1 (DE)
Title: Filterreinigungsvorrichtung eines Wirbelungs-Staubsaugers
Inventor: JIN HYOUNG-JONG
IPC: B04C5/185
Filed: 2003-10-28
Abstract: Eine Filterreinigungsvorrichtung für einen Wirbelungs-Staubsauger, der einen Wirbelungskörper (10) mit einem Sauganschluss (13) und einem Abführanschluss (23), eine Staubsammelaufnahme (31), die mit dem Wirbelungskörper (10) zur Sammlung von Stäuben verbunden ist, welche aus der durch den Sauganschluss (13) eingesaugten Luft abgeschieden sind, und ein Filter (40) enthält, welches mit dem Abführanschluss (23) verbunden und in der Staubsammelaufnahme (31) angeordnet ist, weist eine Betätigungseinheit (61) auf, die unter dem Filter (40) angeordnet ist, um sich dem Filter (40) zu nähern und von diesem zurückzuziehen. Ein Verbindungsteil (73) ist zwischen der Betätigungseinheit (61) und einem Staubentfernungsring (51) eingefügt zu dessen Verschiebung in Verbindung mit den Annäherungs- und Rückziehbewegungen der Betätigungseinheit (61). Zwischen dem Filter (40) und der Betätigungseinheit (61) ist eine elastische Feder (71) eingefügt, die die Betätigungseinheit (61) veranlasst, sich von dem Filter (40) zurückzuziehen.
Patent DE-10353062-A1 (DE)
Title: Lagerstabile Siliconmassen
Inventor: WOERNER CHRISTOF
IPC: C08G77/38
Filed: 2003-11-13
Abstract: Siliconmassen, enthaltend DOLLAR A (A) 100 Gewichtsteile Organopolysiloxan(e) mit einem OH-Gehalt, bezogen auf Si-gebundene OH-Gruppen, von 1 bis 100 Gew.-ppm. DOLLAR A (B) 1-200 Gewichtsteile Füllstoff(e) mit einer spezifischen Oberfläche von mindestens 50 m·2·/g.
Patent DE-10355603-A1 (DE)
Title: Schaltvorrichtung und Anordnung zur Erfassung unterschiedlicher Positionen eines Türelements
Inventor: BLEIER KONRAD
IPC: H01H13/18
Filed: 2003-11-28
Abstract: Die Erfindung betrifft eine Schalteinrichtung mit einem beweglichen Schaltelement (26) und mit einem damit in einer Wirkverbindung stehenden elektrischen Schalter (38), bei der die Wirkverbindung zwischen dem Schaltelement (26) und dem elektrischen Schalter (38) trennbar ist. DOLLAR A Die Erfindung betrifft weiterhin eine Anordnung zur Erfassung wenigstens zweier unterschiedlicher Positionen eines beweglichen Türelements, bei der eine Wirkverbindung zwischen dem Türelement und der Schalteinrichtung trennbar ist. DOLLAR A Die Anordnung sowie die Schalteinrichtung eignen sich insbesondere zur Verwendung in Haushaltsgeräten wie beispielsweise elektrischen Kühlschränken oder Gargeräten.
Patent DE-10357101-A1 (DE)
Title: Cabriolet-Fahrzeug
Inventor: SCHONHORST HEIKO
IPC: B60J7/12
Filed: 2003-12-06
Abstract: Ein Cabriolet-Fahrzeug (1) mit einem einen flexiblen Bezug (5) aufweisenden beweglichen Dach (3), wobei der Bezug (5) von zumindest einem bei geschlossenem Dach (3) im wesentlikchen dem Verlauf der Dachform folgenden Gurt (9) untergriffen ist, der an quer zum Dach (3) angeordneten Gestängeteilen (7; 8) gehalten ist, wird so ausgebildet, daß zumindest ein Ende (9a) des Gurtes (9) eine Schlitzausnehmung (10) des Dachgestänges (7; 8) durchgreift und gegen ein Zurückziehen aus dieser durch eine Endverdickung (11) gesichert ist (Fig. 2).
Patent DE-10358591-A1 (DE)
Title: Vehicle interior crash pad for protection against impact injury is injection molded in foamable thermoplastic
Inventor: KUEHLEWIND RALF
IPC: B60R21/04
Filed: 2003-12-04
Abstract: Injury protection is provided by a flat, deformation resistant foamed body (3) comprising an injection molded thermoplastic plastic incorporating a blowing agent. The foamed body (3) is injection molded onto a supporting part (2) made of a non-foamed thermoplastic and forming part of a visible cladding component (1) in a vehicle. The blowing agent does not react with the thermoplastic, but produces gas on heating. Independent claims are included for: (A) a cladding part, e.g. a crash pad, for the underside of a steering column of a vehicle which incorporates the foamed pad; and (B) a process for manufacturing the claimed injury protection device in which a thermoplastic plastic with blowing agent is injected into a mold.
Patent DE-10358920-A1 (DE)
Title: Mechanical device with self-braking wheel for especially shopping trolley has guiding and connecting means to interconnect main and secondary wheel pivots so that their displacements are coordinated
Inventor: GROSSI GIANCARLO
IPC: B62B5/04
Filed: 2003-12-16
Abstract: The mechanical device with a self-braking wheel for especially a shopping trolley has a main wheel (6) mounted on a first pivot (8) and a secondary wheel (7) mounted on a second pivot (9). Guiding and connecting means (13) are provided for the pivots which serve to interconnect the pivots so that the displacements of the second pivot between a raised position and lowered position are coordinated with the displacements of the first pivot between a first and second position.
Patent DE-10359726-A1 (DE)
Title: Mengenmessung
Inventor: WITZEL ROLF
IPC: F04D15/00
Filed: 2003-12-19
Abstract: Kreiselpumpe mit ein oder mehreren Druckaufnehmern zur Erfassung eines von der Kreiselpumpe erzeugten Differenzdruckes (DELTAp) und einer Auswerteeinheit zur Ermittlung einer Fördermengenangabe (Q) aus einem Differenzdruck (DELTAp). Die Kreiselpumpe ist mit einem Antriebsmittel und einer Einrichtung zur Erfassung einer aufgenommenen Leistung (P) versehen, wobei aus den Messergebnissen vom Differenzdruck (DELTAp¶cal¶) und einer zum gleichen Betriebspunkt gehörigen Leistung (P¶cal¶) die Bildung einer pumpenspezifischen Kalibrierkurve (f(Q¶cal¶)) gemäß der Funktion DOLLAR A f(Q¶cal¶) = P¶cal¶/DELTAp¶cal¶ = Q¶cal¶/eta¶cal¶ DOLLAR A erfolgt und in der Auswerteeinheit gespeichert wird. Während eines Pumpenbetriebs erfolgt für einen jeweiligen Betriebspunkt aus den aufgenommenen Messwerten einer Ist-Leistung (P¶ist¶) bei zugehörigem Ist-Differenzdruck (DELTAp¶ist¶) ein Abgleich dieser Ist-Messwerte mit den gespeicherten Daten der Kalibrierkurve (f(Q¶cal¶)) und ein Abgleichwert bestimmt den Mengenstrom (Q¶ist¶) zum IST-Zeitpunkt der Messung.
Patent DE-10360482-A1 (DE)
Title: Hard coating film for cutting tools consists of a first layer on a substrate, a boron-or carbon-containing surface layer or a layer with composition gradient sandwiched between the first and surface layers
Inventor: YAMAMOTO KENJI
IPC: C23C28/00
Filed: 2003-12-22
Abstract: Hard coating film formed on a substrate includes: a first layer on the substrate, selected from groups 4A, 5A, or 6A metals; a boron (B)- and carbon (C)-containing surface layer, or a layer with a composition gradient, sandwiched between the first and surface layers, of thickness at least 0.05 micron, of B and C content of the first layer in the direction of the surface layer changing continuously or in steps. An Independent claim is included for a process for preparation of the film by sputtering a substrate from a target, with methane or nitrogen as sputtering gas (1), comprising one or more metals as above or alloys of these and at least one B- and C-containing target (4) in a vacuum chamber with substrate rotation, with formation of a hard coating film on the substrate.
Patent DE-10360704-A1 (DE)
Title: Treatment of ground water flows, e.g. from lignite mines, uses infiltration wells across the ground water flow with dosing units and control filters to add neutralizing agents and reagents to stabilize and improve the water quality
Inventor: SCHOEPKE RALPH
IPC: E21B43/00
Filed: 2003-12-19
Abstract: To add reagents to a flow of ground water, wells (1) with one or more supply wells (2) are formed across the water flow (GW) for the infiltration of neutralizing agents and reagents. A dosing unit (4) is in front of the outlet of each infiltration well, and a control filter (5) is after the dosing unit with a granular material and especially gravel. The flow from the wells with the additives forms an induced lateral flow (10) before entering a downstream reaction zone (11).
Patent DE-19503695-A1 (DE)
Inventor: REISING MICHAEL
IPC: B41F33/00
Filed: 1995-02-04
Abstract: The print machine, especially offset printers with exchangeable components such as colour, moisture and paint drums has an integrity test facility to check for the correct assembly of its components. Each removable component (1) has a permanent magnet (3). The resulting magnetic field is detected by a sensor (8) which generates a signal which is passed to a check unit. The sensor is fixed in a trunnion or locating journal (5) of the print drum or other component.
Patent DE-19504230-A1 (DE)
Title: Opto=electronic system with transmitter emitting light beam and remotely arranged receiver
Inventor: ALDIEK NORBERT
IPC: G08B13/184
Filed: 1995-02-09
Abstract: The two mirror surfaces are so arranged at a fixed specified angle (alpha) lying opposite each other, that the transmitted light beam (2) at the mirror surfaces is reflected once. The deflection unit (5) is rotated about an axis of rotation (D) vertically to the plane of the transmitted light beam (2). The angle alpha is equal to 45 deg. The deflection unit is formed by a pentaprism with the main angle alpha.  The deflection unit consists of a pentaprism array, formed of close lying arranged rod shaped prisms formed with the main angle (alpha).
Patent DE-19508085-A1 (DE)
Title: Sealing device for shaft
Inventor: GOERGENS DETLEF
IPC: F16C33/72
Filed: 1995-03-08
Abstract: The sealing device is for a rotating shaft (10). It has at least one sealing running surface (18,19) on the shaft and/or a surface (23) of the casing part (3) within a container (1) covered with a thin layer which has higher resistance to friction, abrasion and corrosion. The layer may consist of titanium nitride or titanium carbide, deposited from the gas phase by chemical or physical vapour deposition - or of aluminium oxide, in which case a flame spraying-on process is applied - or of chromium, in which case it is deposited galvanically.
Patent DE-19508583-A1 (DE)
Title: Quick-assembly furniture esp tables
Inventor: SCHAEFER DIRK
IPC: A47B3/06
Filed: 1995-03-13
Abstract: The furniture unit has an upper part supported by several identical legs (1,2,3) made of flat boards having on one long edge (4) in the intersecting area a pivot (5), and inside the board face in the intersecting area a recess (6) is made to hold the pivot of an adjoining leg. The pivot is rounded at the free end in plan view. The recess is set at an angle of pref. 70.5 degs. to the plane of the board. The imaginary through axis of the recess is inclined towards the pivot. The recess in plan view can form a trapeze whose base lines are at an angle of 60 degs. to the long edge. The legs can be made from wood, recycled plastics, board etc.
Patent DE-19509358-A1 (DE)
Title: Photovoltaischer Halbleiter-Infrarotdetektor
Inventor: SCHIMERT THOMAS R
IPC: H04N5/33
Filed: 1995-03-15
Abstract: Eine erfindungsgemäße Infrarotdetektorzelle umfaßt eine Mehrzahl von in gleichförmigen Abständen angeordneten linearen Segmenten, die ein optisches Gitter bilden. Jedes Segment ist über ihre Breite selektiv dotiert, um eine photovoltaische Diode zu bilden. Die linearen Segmente stellen zwischen elektrischen leitern einen ohmschen Kontakt her, um ein Detektionssignal einer Einzelzelle zu erzeugen. Die Zelle umfaßt einen optisch beugenden Resonanzhohlraum. Eine Feld- bzw. eine Matrixanordnung der Zellen kann ein Infrarotbild erzeugen. Es werden Zellenkonfigurationen zum Empfangen von in einer Dimension bzw. von linear polarisierter Strahlung als auch von zweidimensional bzw. unpolarisierter Strahlung angegeben.
Patent DE-19512113-A1 (DE)
Title: Shape-stabilised high-current battery cable for land- , sea- and air-craft
Inventor: BABIEL GERHARD PROF DR ING
IPC: H01B5/02
Filed: 1995-04-04
Abstract: The high current cable (1) has one end coupled to the battery terminal clamp, while its other end is connected to an electric consumer appliance, or to the car etc. chassis. Between its ends 2,3) the cable comprises a cross-sectional restriction (6), as a fuse, whose dimensions are adapted to the battery current. Pref. the cable is of strip type, originally stamped out of the basic material, then adapted to the assembly geometry by bending, and finally stiffened to obtain a stabilised shape. Typically stiffening beads (4) are formed along the cable longitudinal extension.
Patent DE-19512405-A1 (DE)
Title: Condensation heat exchanger for engine exhaust gas or flue gas from burner
IPC: B01D53/26
Filed: 1995-04-03
Abstract: Heat of exhaust gas from an internal combustion engine or of flue gas from a burner in a small power generator is transferred to a cooling medium and gas is condensed in a condensation heat exchanger equipped with a reaction vessel from which condensate is withdrawn and supplied via a pipeline to the gas duct of the heat exchanger for purification of the gas. Pref. the gas then passes in counterflow to the gas into a bottom trough, where it mixes with fresh condensate and flows back into the reaction vessel.
Patent DE-19519661-A1 (DE)
Inventor: BUGAJNY DANIEL
IPC: B65D19/00
Filed: 1995-05-30
Abstract: A support board, especially of the type used in the manufacture of concrete objects, comprises a number of wooden beams (1) which are placed with their lateral edges against each other, and tension rods (2) which are placed crosswise to the longitudinal direction of the beams (1) and parallel to the plane of the support board, crosswise through these beams (1) in order to hold these beams (1) against each other, characterized in that the tension rods (2) are resilient and clamp the beams (1) with a spring tension against each other. Each end of rod 2 screw-threadedly receives a nut 5 to clamp against the outermost beams 1 via rings 7 and a spring 6 is received at one end region of rod 2 between two rings 7. Profile strips 3 are arranged at the end of the beams 1. <IMAGE>
Patent DE-19522712-A1 (DE)
Inventor: WIGGER AUGUST DR
IPC: A01N43/54
Filed: 1995-06-22
Abstract: The proposed long shelf-life aqueous fungicidal formulation contains the following components: a) a compound of formula (I) in which the substituents have the following meanings: R<1> is either a phenyl group which can carry one to three of the groups cyano, halogen, C1-C4 alkyl, C1-C2 alkyl halide and C1-C4 alkoxy, or a pyrimidyl group which can carry a C1-C3 alkyl group and/or a phenoxy group, the latter being able to carry one to three of the groups cyano, halogen, C1-C4 alkyl, C1-C2 alkyl halide and C1-C4 alkoxy; A is oxygen or oxymethylene (-OCH2-); X is CH or N; Y is oxygen or NR<2>, R<2> being hydrogen, C1-C3 alkyl and C1-C3 alkoxy; at least up to 95 wt.% of said compound being the E-isomer; b) a surface active agent; c) a thixotropic additive; d) optionally a formulating auxiliary agent; e) optionally another active substance. The invention also concerns a process for producing the formulation in question and the use of the formulation to combat harmful fungi.
Patent DE-19524093-A1 (DE)
Title: Water treatment process and assembly combines biological, chemical and physical stages - third chemical stage partly oxidising prod. of second regeneration stage, then returned to first biological stage, for treating heavily polluted industrial effluent
Inventor: RESCHKE GUENTER DR
IPC: C02F1/44
Filed: 1995-07-01
Abstract: An assembly which treats effluent and waste water consists of a combination of biological, chemical and physical treatment stages. The novelty is that the treatment stages consist of: (a) a biological pre-treatment stage (1, 3, 5), with the pre-treated water being drained through an outlet (6) pipe to the second stage; (b) a second stage consisting of one or more absorbers (7a, 7b, 7c, 8), >= 1 of them can be regenerated, and surrendering treated water to a third stage through an outlet pipe (9); (c) a third chemical treatment stage (13, 16, 17, 18) which is linked to the absorbers (7a, 7b, 7c) to be regenerated, by means of an inlet (14a) and outlet (14b).
Patent DE-19528480-A1 (DE)
Title: Parallel geophones in monitoring seismic ground movements - has two geophones electrically interconnected is series and set at 180 degrees to each other
Inventor: EDELMANN HANS A K DR
IPC: G01V1/16
Filed: 1995-08-03
Abstract: The arrangement involves a second electrodynamic geophone (3) which is used on a parallel axis to the first geophone (1). The receiving head (4) of the second geophone is pointed in the opposite direction to that of the first geophone (2). The first geophone is set at 180 degrees in relation to the second geophone and they are electrically connected in series. They may be placed horizontally or vertically.
Patent DE-19529497-A1 (DE)
Title: Optical switch for two or more optical wavelength bands - has Mach-Zehnder interferometer and optical paths of differing path length for providing optical components with different wavelength bands
Inventor: HEISE GERHARD DIPL PHYS DR
IPC: G02B6/34
Filed: 1995-08-10
Abstract: The optical switch (1) allows simultaneous switching of at least 2 optical wavelength bands using a Mach-Zehnder interferometer for dividing the input (10) to the switch into 2 parts with the same wavelength band, fed to respective optical paths of differing optical path length, before being recombined. The obtained optical components have wavelength bands with different centre wavelengths and are fed to respective switch outputs (11,12), with selective variation of the optical path length difference, so that the quotient of the latter and each centre wavelength is a whole number.
Patent DE-19532034-A1 (DE)
Title: Air ventilation system for room
Inventor: MUELLER GOTTFRIED
IPC: F24F13/06
Filed: 1995-08-31
Abstract: The system comprises a series of fans (9), and a front plate (1) with a nozzle (2.2) having a blocking flap (4.2). The flap is rotatable about an axis (5.2) and/or is pivotably connected to the nozzle. The flap can close the nozzle outlet opening (3.2). The rotary axis is arranged outside the centre of the flap, which is connected to a drive mechanism.