baber/WOPTO huggingface dataset:
Patent DE-3837141-A1 (DE)
Title: Steering device for steerable front wheels and rear wheels of vehicles
Inventor: LANG ARMIN
IPC: B62D7/15
Filed: 1988-11-02
Abstract: A steering device for steerable front wheels (3) and rear wheels (10) of vehicles has a front-wheel steering system (1) and a hydraulically supported rear-wheel steering system (6). Electric signals from a front-wheel steering angle sensor (11) a rear-wheel steering angle sensor (12) and a travel speed sensor (14) are prepared in an electronic control unit (15) for an electrical actuation of a control valve (16) of the rear-wheel steering system (6). The transmission ratio of the steering lock of the front wheels (3) and of the rear wheels (10) is changed as a function of the speed of the vehicle. In addition to the electric control signals, hydraulic control signals are fed to the control valve (16) for controlling the steering motor (1) of the rear-wheel steering system (6) from a master cylinder (17) which is drive-connected to the front-wheel steering system (1). <IMAGE>
Patent DE-3839935-A1 (DE)
Inventor: SCHIEFERSTEIN LUDWIG DR
IPC: C09D5/00
Filed: 1988-11-26
Abstract: The invention concerns the use of copolymers containing amino groups in aqueous, water-soluble solutions as temporary coatings in paint spray booths. The compositions are obtained by the copolymerization of (a) 15-90 % by wt. of a nitrogen-free monomer, or several such monomers, with an olefinic double bond and (b) 85-10 % by wt. of a linearly polymerizable monomer containing at least one tertiary amino group, or several such monomers, diallylamine, 2-vinylpyridine and/or 4-vinylpyridin, whereby the amino groups in the copolymers may by completely or partly neutralized or quarternized.
Patent DE-3903258-A1 (DE)
Title: Drive device for the sowing or metering unit of an agricultural machine
Inventor: KUSICKA BOHUMIL DIPL ING
IPC: A01C19/00
Filed: 1989-02-03
Abstract: The object of the invention is a drive device for the sowing or metering unit of an agricultural machine, with a carrier (8) which is connected pivotably to the machine frame (1) via a parallelogram suspension (5, 5') and on which the metering unit is mounted by means of its rotary drum (9) and the chain wheel thereof. An endless chain (17) runs via a driving chain wheel (12) fastened on a central shaft (11) which projects through a bearing (3) arranged in a holder (2) of the parallelogram suspension (5, 5'). The endless chain runs via a tension device and a sliding or rotating guide (18). Slipped into the hauling strand of the endless chain (17) driven by the driving chain wheel (12) is a compensating device (16) which is mounted on the upper bolt (6) of the carrier (8) of the sowing or metering device (9), on which bolt the pivotable pull rod (5) of the parallelogram suspension also engages. <IMAGE>
Patent DE-3904786-A1 (DE)
Title: Two-wheel brake operated by back-pedalling
Inventor: BECK ARMIN
IPC: B62L5/00
Filed: 1989-02-17
Abstract: By virtue of the brake-locking mechanism, already known from the last century, on the bottom-bracket bearing spindle, every modern bicycle brake may also be operated by back-pedalling if, in accordance with the invention, flexible transmission means for the braking force are used. By using a freewheel locking mechanism with only two latching positions which correspond to the horizontal crank-arm positions, it is ensured that from any position of the cranks back-pedalling brings about a transfer directly into the optimum braking position. Attempts to brake in the slack points are hence ruled out. The greater leg force allows both brakes to be operated simultaneously. By connecting the two two-wheel brakes in parallel by way of a piece of wood as balance, the two brakes can participate to any desired extent in the braking process. The larger travel of the pedal cranks relative to the hand lever also makes all-wheel braking possible by connecting the two brakes in series. By using different travel- and power-limiting devices the brakes, on the one hand, may be protected from overload and, on the other hand, the wheels may be protected from locking.
Patent DE-3905798-A1 (DE)
Title: Method for measuring damage in at least one area of a semiconductor wafer during the treatment of the semiconductor wafer
Inventor: ENGELHARDT MANFRED DIPL PHYS D
IPC: G01R31/265
Filed: 1989-02-24
Abstract: During the excitation of plasma and temperature waves in an area (3) of a semiconductor wafer (6), an interaction occurs between the plasma and temperature waves and the semiconductor wafer (6). The strength of this interaction is a measure of any damage present in this area (3), which influences the electrical yields of components contained in the semiconductor wafer (6). By means of contact-free excitation and measurement of the interaction between the temperature and plasma waves and the semiconductor wafer (6), statements on the electrical yields to be expected can be made even during the manufacturing process. The measuring method is used e.g. for the control of dry-etching processes during the manufacture of trench cells for highly-integrated DRAMs. <IMAGE>
Patent DE-3912369-A1 (DE)
Title: Vehicle with stepless hydrostatic mechanical power branch drive - has four shaft planetary differential and two sun gears meshing respectively with planet gears
Inventor: HAGIN FAUST DIPL ING
IPC: F16H47/04
Filed: 1989-04-14
Abstract: Two main shafts (10,11) are provided to give input or output and are respectively connected to different shafts of the planet differential (4).  At least two hydrostatic machines are provided, which respectively are connected in at least one working section of the power branch gear unit (1).  The effective driving power introduction point (26) of the drive side main shaft (10) lies spatially between the sun gear (27) arranged at a non-drive shaft (11) and the drive engine (2) arranged in front of the power branch gear unit (1). An energy storge flywheel (16) can be coupled as required to the shaft (11) by a clutch (KS).  The sun gear (27) arranged at the non drive side shaft (11) is designed with a dia. as small as possible and the planet gears (28,29) are arranged rotation proof on a shaft (30) rotationally located in the web (31). USE/ADVANTAGE - Drive unit for vehicle.  Further developed to give more compact unit whilst maintaining drive principle.
Patent DE-3914148-A1 (DE)
Title: Shuttle for a sewing machine, having a thread-cutting device
Inventor: KOSEKI KATSUMI
IPC: D05B65/00
Filed: 1989-04-28
Abstract: A shuttle for a sewing machine exhibits a thread-cutting device with a movable blade and a covering member with a protrusion which pushes a thread, retained by the movable blade, upwards in order to prevent the thread from snagging.
Patent DE-3915526-A1 (DE)
Title: Duplex-form electric motor or generator - has hollow rotor with internal stator coil and external stator coil
Inventor: HOPF ROLF
IPC: H02K23/56
Filed: 1989-02-13
Abstract: A hollow rotor (3) is set in rotation by two different magnetic fields, mutually independent. In the cavity of the rotor, an internal stator winding (4) is borne rigidly, and symmetrical to the rotor. The rigid position of the internal stator winding may be reached by an internal stator holder spike (5) on which the windings are borne inside the cavity in an internal rotor ball-bearing (9). At the other side, the spike may be attached to a centering plate (6) screwed to the housing (1). ADVANTAGE - Increased efficiency.
Patent DE-3917503-A1 (DE)
Inventor: MUELLER HELMUT FRANK OTTOMAR P
IPC: F24S23/00
Filed: 1989-05-30
Abstract: The exterior wall element has an outer plate (10) with lens-like optical elements (14). Radiation receiving elements (15) for energy recovery are located on the inner plate (11), in the focusing plane of the optical elements (14). The incident light can either be focused onto the radiation receiving elements (15) or onto transparent regions of the inner plate. The exterior wall element permits optional energy recovery or reflection, transmission of diffuse light taking place in both cases. 
<IMAGE>
Patent DE-3917604-A1 (DE)
Title: Method for cleaning root crops
Inventor: NORLYK JOHANNES RICHARD
IPC: A01D17/10
Filed: 1989-05-31
Abstract: Because root crops, such as, for example, beet (1), are rolled on a base (7) which is moved sideways under the beet (3, 4), the earth (11) adhering to the beet when it is picked up is stripped from the beet which is thereby cleaned. The base (7) consists of rods (8) which have drivers in the form of projections (16), the said rods (8) being mounted between flexible toothed belts (12), in such a way that the rods (8) are parallel to one another. The earth (11) will be capable of falling down between the rods and back onto the field. This avoids the need for the normal rough cleaning which otherwise entails significant damage attributable to pressure and which thereby reduces the quality of the harvested root crops. <IMAGE>
Patent DE-3919234-A1 (DE)
Title: Flap valve with sealing spring - has sealing spring, with valve closed, displaced by inclined sealing surface against action of tensioning spring
Inventor: KUCKERTZ WILHELM
IPC: F16K1/20
Filed: 1989-06-13
Abstract: The seal for a large flap valve consists of a sealing spring (6) and a tensioning spring fixed to either the valve flap or housing. With the valve open, the sealing spring is displaced from its unstressed state by the tensioning spring. The sealing surface (5), against which the sealing spring acts, is inclined so that, with the valve closed, the sealing spring is displaced in an opposite direction to that when open. USE/ADVANTAGE - Reduced load on the sealing spring for large flap valve.
Patent DE-3920879-A1 (DE)
Title: Magnetic accessory attachment aid for spectacles
Inventor: STEMME OTTO DR
IPC: G02C9/00
Filed: 1989-06-26
Abstract: To enable extra lenses (30,32) to be secured to a pair of spectacles in front of the normal lenses (18,20) a magnetic connection (22) can be incorporated in the frame (2) e.g. in the bridge piece (16). One magnet (36) is housed inside a bridge piece connecting the extra lenses (e.g. for sunglasses) and the other magnet (34) is in the main bridge piece.  Permanent magnets having high characteristic values such as energy density and permanence are incorporated, using alloys contg. at least one rare earth element and/or cobalt and/or by making them magnetically anisotropic. Their volume and weight are low enough for incorporating in the frame.
Patent DE-3922047-A1 (DE)
Title: Shaft bell for tunnel - comprises sectional frames and supports with built-in expansion devices
Inventor: AHRENFELD HILMAR
IPC: E21D11/05
Filed: 1989-07-05
Abstract: The shaft bell (1) may be used in tunnel workings. It comprises a number of frames (2,3) assembled from sections, which reach across the shaft and are connected by vertical flexible profiled supports (4,5). The frames and supports may be expanded in girth by inbuilt expansion devices (9). USE/ADVANTAGE - Gives support to the shaft sides as well as access to the gallery.
Patent DE-3924594-A1 (DE)
Inventor: ZIESAK HERBERT
IPC: B65D45/34
Filed: 1989-07-25
Abstract: A clamping ring closure (15) for sheet metal containers, such as pails or buckets or the like, is provided, in which the edge of the container and the edge flange of the lid are pressed firmly against one another and in a sealing manner with interposition of a seal with the aid of a slotted clamping ring (15), specifically with the aid of a toggle lever-type closure. The circumferential ends (15a) of the clamping ring are retained securely against lateral deflection and guided by a profiled part, matched to the trapezoidal profile of the clamping ring, in the form of an elongate bridging piece (20). The clamping lever (22) is constructed and arranged in such a way that, in the closed position of the closure, it grips over and secures the bridging piece (20) from the outside over its entire length with the ends of the clamping ring (15a, 15b), accommodated therein, with tight profile matching. <IMAGE>
Patent DE-3924680-A1 (DE)
Title: Polyamide polymers prodn. by post-condensing in solid phase
Inventor: HEINZ HANS-DETLEF DIPL CHEM DR
IPC: C08G69/30
Filed: 1989-07-26
Abstract: Particulate, high mol. polyamides (I) are prepd.  by (1) forming homogenous mixt. in melt of (A) comparativeely low mol. particulate polyamide with relative viscosity (RV) 2.5-5.5 (1 wt.% soln. in m-cresol, 25 deg.C) and (B) at least one masterbatch prepd. from (B1) at least one P cpd. of formulae (1)-(5), or corresp.  oligomeric or polymeric homologue of cpd. of formula (1) or (2), which can be open chain or cyclic, or salt (partic. Na, K, or NH4) or ester and (B2) a thermoplast; (2) cooling melt and granulating; (3) postcondensing in solid phase at 145-195 deg.C, where P content of (I) is 5-300 ppm, initial rate of postcondensation is increased by min. 100% compared with that of catalyst free (A), and if (B2) is polyamide, (B) can be prepd.  by polycondensing or polymerising polyamide-forming units in the presence of corresponding amt. of catalyst (B1). In formulae (1)-(5), R1 = H, 1-22C alkyl or aralkyl, 1-20C aryl or alkaryl, metal atom (partic. Na or K) or NH4; R2-R4 and R8 = 1-22C alkyl or aralkyl or 6-25C aryl or alkaryl; R5, R6 = H or 1-22C alkyl or aralkyl or 6-25C aryl or alkaryl; R7 = H, metal atom, NH4, or R2-R4; where R5, R6, R8 can also be multivalent, contg. more than 1 P atom per mol.
Patent DE-3924714-A1 (DE)
Title: Mechanism for machining wood panel edge faces - has tool with cutter edges, arranged in circular conical surface with specified sharp angle
Inventor: LANG MIKLOS DR
IPC: B27D5/00
Filed: 1989-07-26
Abstract: The rotary mechanism for machining the edges (6) of wood  panels (7), planks, or other wooden materials has the main cutter edges (3) of the tool (2) arranged in a circular conical surface (11), with a tip angle (SW) between 170 and 140 deg. The rotary axis (5) of the tool lies in a shaft angle (AW) between 5 and 20 deg. to the normal of the worked edge (6) in a palneplane approx. perpendicular to the direction of transport. ADVANTAGE - High surface quality and long tool service life.
Patent DE-3927372-A1 (DE)
Title: Tablet for computerised symbol manipulation of handwritten formulae - enables display of interpreted input giving real=time feedback to user
Inventor: HOTZ GUENTER PROF DR
IPC: G06K9/22
Filed: 1989-08-19
Abstract: A tablet for computerised manipulation of handwriting enables input of handwriting and maintenance of a standard notation allowing two-dimensional characters. The input device forms a unit with an output device so the whole system can be operated from one device by writing on a single surface. The handwritten input is converted into standard characters after a short delay so that the writer has real-time feedback on whether the computer has correctly interpreted the handwriting. USE/ADVANTAGE - For rapid, reliable conversion of handwritten formulae, text and designs into representations accessible for computer processing and storage.
Patent DE-3930574-A1 (DE)
Title: Receptacle for recording media of office printer - has paper support adjustable in inclination , and accepts standard thickness and thinner paper sheets
Inventor: SCHERER HORST
IPC: B65H31/00
Filed: 1989-09-13
Abstract: The receptacle (20) is mounted at an angle on the upper side of the machine so that the recording sheets fail into it under gravity after leaving the last transport roller of the machine. The receptacle accepts and holds a paper support (28) with latching elements (26,27) which can be positioned at two or more different angles to the vertical. USE/ADVANTAGE - For printer for receiving output paper sheets. Suitable for receiving standard thickness paper sheets and thinner sheets.
Patent DE-3933894-A1 (DE)
Title: Appts. to prevent flue gas formation in metallurgical process
Inventor: MOHNKERN HORSTMAR DIPL ING
IPC: C21C1/00
Filed: 1989-10-11
Abstract: Device for avoiding the formation of flue gases in metallurgical processes and when transporting molten metal from metallurgical vessels, esp. blast furnaces (10) to casting vessels has esp. discharge channels (15-16) which take the molten metal from the furnace's casting outlet, covered by hoods (22-24) so that minimal space exists above the molten metal. The transfer stations (17-19) at which the metal transfers esp. from the transporter and discharge channels into the casting vessel, and the outflow openings are shielded to render them gas tight. Inert gas flushes through this transfer point and the space in the covered channels. An inert gas mantel, circular in cross-section, protects the molten stream as it flows from the outlet into the casting vessel, and is generated at a pressure of pref. 1.5 bar. An inert gas pressure of pref. between 10 and 100 Pa above the external pressure is maintained in the furnace or transport unit, or both esp. over the transport and discharge channels, also at the transition pt. and in the interior of the casting vessel.  The inert gas also serves to cool the covers and shielding mechanisms and comprises nitrogen or similar gas, whose free oxygen component has been consumed by burning in a combustion chamber and which is finally cooled.
Patent DE-3936697-A1 (DE)
Inventor: FARR GLYN PHILLIP REGINALD
IPC: B60T8/40
Filed: 1989-11-03
Abstract: A modulator assembly (4) for modulating the supply of fluid to a brake (2) on a wheel (3) from a master cylinder (1) incorporates a dump valve (10) responsive to a wheel anti-lock signal and normally closed to isolate the brake (2) from an expander chamber (11) of which the effective volume is determined by movement of an expander piston (12) in bore (13), and an isolating valve (21, 22) between the master cylinder (1) and the brake (2), normally held in an open position by the piston (12) to permit free and unrestricted communication between the master cylinder (1) and the brake (2). This unrestricted communication facilitates bleeding of the main brake line, and gives free transmission of fluid to and from the brake (2) in a normal operating mode, but when an anti-skid signal is received, the dump valve opens, pressure fluid acts on the piston (12) which moves to close the isolating valve (21, 22) and then reduce the pressure acting on the brake. Fig 2 shows a dual circuit arrangement.   <IMAGE>
Patent DE-3938181-A1 (DE)
Inventor: LOESCH ROLF
IPC: C07D213/61
Filed: 1989-11-17
Abstract: A process for the preparation of pyridine-3-sulphonic acid free of heavy metal by oxidation of 3-chloropyridine to 3-chloropyridine N-oxide, replacement of chlorine by a sulpho group, followed by reduction to pyridine-3-sulphonic acid. The process can be carried out using the crude 3-chloropyridine N-oxide, followed by direct further reaction of the pyridine-3-sulphonic acid N-oxide in the presence of Raney nickel in alkaline solution.
Patent DE-3939076-A1 (DE)
Title: Mobile staircase for boarding aircraft
Inventor: WENZEL LOTHAR H DIPL ING
IPC: B64F1/315
Filed: 1989-11-25
Abstract: A mobile staircase to enable passengers to board an aircraft is made in three sections (10) which fit telescopically one inside another. The staircase is mounted on a motor vehicle and can be extended and swung upwards or downwards.  The motor vehicle chassis is made in two parts, a front part (1), and a rear part (2). These two parts are conncted by a swivelling joint which enables the rear part (2) to be swung about a horizontal axis (3) relative to the front part (1). This horizontal axis (3) is parallel to the rear axle (5) of the vehicle.
Patent DE-3940110-A1 (DE)
Inventor: BLASCHEK REIMUT DIPL ING
IPC: C02F3/20
Filed: 1989-12-05
Abstract: To introduce gas into bodies of water, a gas treatment mat is proposed, which is composed of a frame 1 designed as a buoyancy body, on which are mounted the gas treatment pipes 3. The frame 1 is provided with a central weight 5 in such a manner that it floats over the bottom in the bodies of water.
Patent DE-4003970-A1 (DE)
Title: Ported member operation - uses tool concentrically insertable through prodn. tubing on continuous length of remedial tubing
Inventor: HOPMANN MARK E
IPC: E21B34/14
Filed: 1990-02-09
Abstract: The appts comprises a cylindrical tubular housing with a fluid passageway which communicates with the interior of the remedial tubing, allowing fluid from the remedial tubing into it. An auxiliary appts. is carried by the remedial tubing and positioned adjacent one of the ports in the prodn. tubing which may be open or closed.
Patent DE-4006045-A1 (DE)
Title: Winder bobbin supply - has pivoting holding spindles and overhead conveyors with grippers which remove spent bobbins and insert full bobbins
Inventor: ZITZEN WILHELM
IPC: B65H67/06
Filed: 1990-02-26
Abstract: To exchange a used bobbin for a full bobbin at a textile machine, a winder, the holding spindle for the used bobbin is pivoted from its horizontal working position into the vertical, to be removed vertically upwards and displaced to one side. The new bobbin is brought in from the side above the holding spindle and lowered into place. The spindle, with the new bobbin, is swung back into the operating position for the next machine action. ADVANTAGE - The exchange of empty for full bobbins is simple, with min. handling, reducing change times in a simple appts.
Patent DE-4007851-A1 (DE)
Inventor: HERPEL CARSTEN DIPL ING
IPC: G06F15/00
Filed: 1990-03-12
Abstract: 2.1 For the purpose of data reduction, motion-compensating predictors are determined which are additionally improved by recognition and compensation of zoom and pan. 2.2 A vector histogram, which is used for determining a pan vector and the zoom factor is generated from data of a block-oriented motion estimator. A pure pan vector is determined from the vectors of greatest frequency. When the existence of a zoom is suspected, the pan vector is generated from a cleaned-up vector histogram. 2.3 The invention is preferably used in digital image processing systems.
Patent DE-4010333-A1 (DE)
Title: Lubricant cooling system for power transmission system - consists of housing with interlocking cog wheels, with heating pipe, oil container with connecting hole
Inventor: KIMURA MOTOAKI
IPC: F16H57/04
Filed: 1990-03-30
Abstract: The lubricant cooling system for a power transmission system has a housing (10) for at least two interlocking cog wheels, and for lubricant (26) into which part of each cog wheel dips. A heating pipe (12) with a heating (13a) and cooling (13b) part is fixed to the housing (10). The housing (10) has an oil container (11) positioned laterally from one of the two cog-wheels (14) and takes lubricant (26). A connecting hole (28) for the oil container (11) is positioned above the lubricant gauge (27) when the cog wheels (14,-e 16) are still. ADVANTAGE - The heating pipe is less easily damaged or broken by stones passing through it, without impairing the cooling effect of the lubricant.
Patent DE-4010993-A1 (DE)
Title: Textile clip between materials - resembles paper-clip with retaining hooks
Inventor: HESSE GUENTER DR MED
IPC: A44B99/00
Filed: 1990-04-05
Abstract: The textile clip secures two pieces of material together, temporarily or permanently. It is of metal or plastic, with retaining hooks by which it engages with the material, and generally in the form of a paper-clip. ADVANTAGE - Usable in place of a sliding-clasp fastener, press-button, safety-pin etc.
Patent DE-4012160-A1 (DE)
Inventor: DAHLHAUS ULRICH
IPC: F16J15/00
Filed: 1990-04-14
Abstract: A rotary shaft seal in which a filtering device is positioned in front of a main seal (2) in the direction of the space to be sealed off. The filtering device comprises a sealing lip (3) which surrounds the shaft to be sealed off with a cylindrical surface (5) at a radial distance D, the narrowness of which leads to a capillary action. At the axial end facing the space A to be sealed off, the cylindrical surface 5 is bounded by a conical surface 10 which encloses a cone angle of 60 to 120 degrees. <IMAGE>