baber/WOPTO huggingface dataset:
Patent DE-4040468-A1 (DE)
Title: Bis:cationic acid amide and imide cpds. - used as charge transfer agents in toner and charge controllers for powder and powder paint
Inventor: MACHOLDT HANS-TOBIAS DR
IPC: C07D487/04
Filed: 1990-12-17
Abstract: Charge transfer agents for toners and developers  used in electrophotographic copying and printing of data stored in an electronic, optical or magnetic system or in colour proofing and charge control agents for powder and powder paints are bis-cationic acid amide and imide derivs. of formula (I), (II) and/or (III): R1-8 independently = H or a hydrocarbon gp., opt.  contg. a hetero-atom; KR1R2 and K'R4R5 may = a ring system; if R1R2, R4 or R5 is connected to K or K' by a double bond, R3 or R6 is absent and/or one of R1-3 with R7 or R4-6 with or R8 = a 2-5C aliphatic bridge; A, A' and W1 = divalent, W2 = a tetravalent and W3 = a trivalent bridge based on a hydrocarbon, opt. contg. hetero-atoms, and W1 may also = a direct bond; K and K' independently = N, P, As or Sb; X(-) the stoichiometric equiv.  of (in)organic or (un)mixed anion(s). USE/ADVANTAGE - (I), (II) and (III) are colourless. The claims include their use in powders and paints for coating metals, wood, plastics, glass, ceramics, cement concrete, textiles, paper or rubber, esp. in triboelectric or electrokinetic spray powder paints. They have high and constant charge control properties, excellent temp. stability and very good dispersibility. They can be synthesised more economically than the usual charge control agents.
Patent DE-4040539-A1 (DE)
Title: Sound-proof fixing for air duct - consists of threaded rod screwed to bearer with nut and rubber buffer and metal washer
Inventor: DICK RENE
IPC: F24F13/02
Filed: 1990-12-18
Abstract: The fixing is for an air duct and is designed to deaden the sound. A vertical threaded rod (6) passes through a hole (10) in a bearer plate (7), and is secured to its underside by a nut (12) which allows a height adjustment. Between the nut and the bearer (7) are a rubber buffer (8) and a metal washer (11), and the bearer is fixed by a bolt (15) to the corner flanges (4,4') of adjoining duct panels (1,1'). USE/ADVANTAGE - A sound proof fixing which allows the sheet metal duct to be adjustably fixed.
Patent DE-4040667-A1 (DE)
Title: Changeover valve for mixer battery for water - consists of ventilation valve and air removal pipe with outlet
Inventor: BERG BURKHARD
IPC: E03C1/10
Filed: 1990-12-19
Abstract: The changeover valve (1), especially for the mixer water outflow in a buried mixer-battery (2), incorporates a changeover piece for switching over the water quickly. A ventilation valve (15) is positioned in parallel series with the downward-leading outlet (12) of the water-changeover valve (1). The water-changeover valve is connected to a buried block (20) belonging to the mixer battery (2). A dripping-water and air-removal pipe (151) leads from the ventilation valve (15) to a covering-collar (21). ADVANTAGE - A switch-over from one consumer to the other is effected quickly and water-hammering noises avoided due to under-pressure.
Patent DE-4101353-A1 (DE)
Title: Lapping machine with two lapping discs - has adjustment for eccentricity of lapping discs with respect to machine axis
Inventor: SCHMIEG RAINER
IPC: B24B37/04
Filed: 1991-01-18
Abstract: The lapping machine has two lapping discs (1, 2) which are adjusted eccentrically with respect to the axis of the lapping cage (7). The eccentricity adjusters of the two discs are coupled together and the lapping discs (1, 2) are interchangeable with discs of different diameters and thicknesses. The eccentricity of the lapping cage (7) and the upper lapping disc (2) can be adjusted independently of each other and the pressure of the upper lapping disc is adjustable. The required degree of eccentricity is controlled by a sensor and the pressure is controlled by a balance weight of variable mass. USE/ADVANTAGE - Lapping machine for producing a fine finish on the surface of brittle materials.
Patent DE-4102857-A1 (DE)
Title: Beam focussing control method for CD player - varying offset compensation voltage fed to focussing control circuit until bit error rate of scanned data signal reaches minimum
Inventor: BAAS DIETER
IPC: G11B7/09
Filed: 1991-01-31
Abstract: A light beam is focussed onto a record carrier, e.g. a CD, for sampling data and producing a data signal. A voltage is fed to a focussing control circuit for compensating for voltage offset. The compensation voltage is only varied until the bit error rate of the data signal falls below a set threshold. In a coarse equalisation process, a compensation voltage is determined and raised by a positive step +d, and the corresp. bit error rate (B1) is determined. The first compensation voltage is then reduced by a negative step -d and a second bit error rate (B2) is determined. The process is repeated until the two bit error rates are equal (B1=B2). USE/ADVANTAGE - Also for video disc, DRAW disc, and magneto=optical disc players. More reliable operation in presence of scratches, fingerprints or knocks.
Patent DE-4111131-A1 (DE)
Inventor: SEDLMEYER ROBERT
IPC: H04B1/66
Filed: 1991-04-06
Abstract: When digitized audio signals are transmitted or stored through interference-affected channels, transmission faults are detected and if necessary corrected or veiled at the reception side. To veil the transmission faults, the faulty signal section is muted or replaced by a signal section that precedes the faulty signal section in the same channel or by a simultaneously transmitted, intact signal section in a neighbouring channel. When data-reduced, digital audio signals are used, that according to their source encoding are time and/or spectrally distributed, only the faulty spectral values or partial bands or faulty groups of spectral values or partial bands are veiled.
Patent DE-4120019-A1 (DE)
Title: Brake drum with cylindrical application surface for brake lining
Inventor: EBBINGHAUS WILFRIED
IPC: F16D51/00
Filed: 1991-06-18
Abstract: The rabbet (15) overlaps in an axial direction the front edge of the brake lining (4), and has a depth in its radial direction which corresponds to the max. brake drum wear. A radial circulating arm of the rabbet is wave-form in shape. The brake lining has recesses on its outer edge facing the opening (14), which extend over the radial arm of the rabbet in an axial direction. A cover plate (11) above the rabbet a viewing window. On the floor of the drum a groove is fomed in the application surface.     The groove overlaps in an axial direction the rear edge of the brake lining, and in a radial direction has a depth which corresponds to the max. brake drum wear.
Patent DE-4120813-A1 (DE)
Inventor: GERNDT RUEDIGER
IPC: A63B69/18
Filed: 1991-06-24
Abstract: Disclosed is an aid for learning to ski, consisting of a substantially longitudinal tubular body (2) with two hand-grip sections (A, B) one at each end. The aid is used simultaneously by the instructor and pupil, being held approximately horizontally, with the instructor and the pupil each holding one of the hand-grip sections with both hands. Since the hand-grip sections (A, B) are staggered with respect to each other, the aid adapts automatically for use by instructors and pupils of different sizes.
Patent DE-4126354-A1 (DE)
Title: Ground target detector for aircraft - has sensor on lift-generating body dragged by strong, flexible cable behind aircraft
Inventor: FRIESE DIETER DIPL ING
IPC: F41G3/14
Filed: 1991-08-09
Abstract: The target detector uses sensors operating in different spectral ranges to detect ground targets. A sensor (10) is arranged on a lift-generating body (11) connected to an aircraft by a high-strength flexible cable (12). The body is formed as a stream-lined platform with height and stabilising control devices, or with fixed surfaces or lift and natural dynamic longitudinal stability, giving a sinusoidal movement when dragged behind the aircraft. The body may be stored in the aircraft before being ejected and inflated to its final form. The cable is pref. an optical cable for transmission of sensor signals to the aircraft. ADVANTAGE - Aircraft need not leave low-flying zone to detect ground targets.
Patent DE-4130093-A1 (DE)
Title: Cotton card-room equipment with multiple connections -  comprising sawtooth or wire clothing on set of swifts contained in housing
Inventor: LEIFELD FERDINAND
IPC: D01G9/20
Filed: 1991-09-11
Abstract: A cotton carding machine has sawtooth or wire clothing on a set of swifts contained in a housing. Arrangements are included to extract trash in the form of lead, seed, stem, sand, etc. This is achieved by means of separator blades running agasinst the direction of the carding elements and having extn. by suction, utilising a unified ducting system. The cotton fibre is fed into the machine through the roller pair with swifts running counter. A series of blades set into adjustable positions relative to the surface of the swift, are attached to the air extractor ducts at an angle which will separate the trash whilst the fibres are held onto the clothing teeth. The ends of the extractor tubes are held rigidly in the sides of the machine housing, and are sealed with rubber or similar flexible material, but in a manner which allows assembly and removal. ADVANTAGE - Multiple connections to separate suction tubes is avoided. The assembly and construction costs are lower. The suction in the various sections of the machine is unified, more efficient, and give better machine performance.
Patent DE-4132311-A1 (DE)
Title: Sawing method for separating components of semiconductor wafer or glass compound - using frozen liquid to secure wafer to base, and applying coolant for saw blade
Inventor: KOHLER GERD DIPL ING
IPC: B23D47/02
Filed: 1991-09-27
Abstract: The wafer is mounted on a base (10) acting as a chuck, the connection between them being made by freezing. The medium to be used for freezing is high purity water or deionised water freezing at a temp. between 0 and 50 deg.C. In the surface of the base are channels (18) guiding the saw blade which is cooled and lubricated by a sprayed on glucose solution which can also be used as the frozen medium. The medium is circulated through the base. USE/ADVANTAGE - For making ink jet printer heads. Blockage by particles produced by cutting operation is avoided.
Patent DE-4134465-A1 (DE)
Title: Crank gear with gear housing contg. crank shaft - has two toothed gear wheels, crank pin and connecting rod
Inventor: KROPP JUERGEN
IPC: F16H21/30
Filed: 1991-10-18
Abstract: The crank gear has a gear housing (10) in which is mounted a crank shaft (12) and a connecting-rod with bearing. An internally toothed cog wheel (14) is contained concentrically from the gear housing (10) to the crankshaft (12) bearing. A second, externally toothed cog wheel (18) rotates on the crank shaft's (12) crank pin (16) inside the first cog wheel (14). The second cog wheel's (18) part-circle radius is less than the first cog-wheel's (14) part circle radius by the crank's radius. The second cog wheel's (18) teeth are half as few as those of the first cog wheel (14). A disc (20) through which goes the crank pin (16) is positioned on the second cog wheel (18) and forms the connecting rod section. ADVANTAGE - The crank gear achieves a longer stroke, with a relatively small crank radius.
Patent DE-4140035-A1 (DE)
Title: Vehicle axle having two freewheel units - has pedal power actuation system using chain wheels to effect reverse movement.
IPC: B62M9/00
Filed: 1991-12-05
Abstract: The vehicle axle has two freewheel units to provide forward and reverse drive. It has gearwheels (14,15) each operating with a chain or cable (1). Two units are made up of drive components (3,4) on separate shafts (2) with locking action balls (6) contained in cages which are actuated by a lever (12) attached to a chain or cable driven wheel (8). USE/ADVANTAGE - Freewheel reversing system which can be actuated by muscle power working through pedals.
Patent DE-4140088-A1 (DE)
IPC: F16K17/16
Filed: 1991-12-05
Abstract: The invention relates to a pressure-relief device which consists of a two-part frame (1) and between the frame parts (4, 5) of which is clamped a bursting disc (2). On the inside, each frame part contains a depression (6) which ends at the front surface and serves to accommodate measuring devices, spacing washers or closing blocks (7, 8). <IMAGE>
Patent DE-4205838-A1 (DE)
Title: Pump with ring piston - has line contact between piston jacket and chamber jacket in sealing area
IPC: F04C2/04
Filed: 1992-02-26
Abstract: The pump has a ring- resp. cylinder-type piston, driven by a turntable eccentric, in the chamber of a pump housing. Piston jacket and chamber jacket form a sealing pin in any rotary position. The piston jacket carries a radially projecting sealing vane, and intake and outlet channels are located next to the vane. A tangent extends in the area of the sealing point on the intake and/or outlet side, to piston jacket and chamber jacket. In at least the top dead centre position of the piston, the tangent encloses an angle of less than or equal to 90 deg. with the connection line between the contact point of the slide guide of the sealing vane, and the rotary axis of the eccentric.
Patent DE-4205936-A1 (DE)
Inventor: DUERR WALTER DIPL ING
IPC: A61C17/14
Filed: 1992-02-27
Abstract: In order to remove particles of solids which are not yet stuck together from the walls of slightly inclined connecting ducts (32) which connect dental workstations (14) with a central separation unit (28), it is proposed that a flushing medium comprising air and water mixed together by turbulence should be circulated intermittently through the ducts. The flushing medium is produced by rapidly drawing through the ducts a volume of water held in a siphon trap at the inlet end of the ducts by opening a scavenging air valve which is provided there on the inlet side. A suction pump connected to the separation unit (28) is used for this purpose.
Patent DE-4207421-A1 (DE)
Title: Optoelectronic absolute or incremental angle sensor - has vernier spiral encoding and digitally addressable area or line sensor
Inventor: EGER ROLF G
IPC: G01D5/347
Filed: 1992-03-09
Abstract: The angle sensor has a code plate with a vernier code applied either alone or in addition to the usual code.  The vernier code has a spiral function for high resolution line/area sensors.  It is configurable for full absolute angle sensing or incremental sensing. Digitally addressable optoelectronic area or line sensors are used as optical sensors. Self-calibration is performed without reference transducers or comparison measurements. ADVANTAGE - Edge errors of absolute encoding are eliminated with spiral, whose optical quality need only be as high as finest track of conventional track code.
Patent DE-4209163-A1 (DE)
Title: Mixt. formation method for mixt.-compressing, remotely ignited IC engines - has with load change to non-stationary air mass flow fuel amount measured dependent upon air count
Inventor: FICKEL HANS-CHRISTIAN
IPC: F02D41/18
Filed: 1992-03-20
Abstract: The commencement of the measurement duration is selected later than the flow commencement of an air mass flow. The end of the measurement duration is selected earlier than the flow end of an air mass flow. The commencement and/or end of the measurement duration are alterable dependent upon the load point. At the commencement and/or end of the measurement duration a measurement cross-section of a fuel measurement device is opened and/or closed in accordance with a spring function. During the measurement duration, the measurement cross-section dependent upon air mass flow is variably selected. USE/ADVANTAGE - To improve a homogeneous fuel-air mixt. for an internal combustion engine.
Patent DE-4210240-A1 (DE)
Title: Valve-controlled hydraulic damping element - has flow control circuit enabling damper to act as position member.
Inventor: LA HAYE JOHANNES DE DIPL ING
IPC: F16F9/46
Filed: 1992-03-28
Abstract: The hydraulic damping element (10) has a cylinder (12) with a piston (14). On displacement of the piston the flow medium in the cylinder passes via a pipe (28) from one section (22,24) into the other section (24,22) of the cylinder. The pipe (28) can be blocked by a valve (30,32), so locking the damper. The damper can also act as a position member, in which case the pressure medium flow (26) is via a further pipe (50) and both valves (30,32) remain closed. USE/ADVANTAGE - Element for use in robots, vehicles, aircraft and weaponry in which the functions of damper and position member can be combined.
Patent DE-4210536-A1 (DE)
Title: Suspension damping characteristic controller for motor vehicle - uses stored values of transmission ratio with allowance for jerky re-engagement of clutch after change of gear
Inventor: ROEDER MANFRED DIPL ING
IPC: B60G17/016
Filed: 1992-03-31
Abstract: The vehicle is propelled by a combustion engine (1) with a manual gearbox (5) and a differential (17) driving an axle suspended from springs (25) and shock-absorbers (29) adjusted (27) by electronic control (31) responsive to sensors of engine and gearbox output shaft speeds (33,35) and accelerator pedal position (37). Ranges of values of engine speed to road speed ratio for individual gears are memorised with allowance for wheel slip and tachometer errors. The deg. of hardness of the suspension is varied in accordance with information representing the currently engaged gear. ADVANTAGE - Jerks caused by driver's action on accelerator pedal can be detected and counteracted without any special longitudinal accelerometer.
Patent DE-4212942-A1 (DE)
Title: Filling and emptying device for containers - has detachable outlet dish fitted on outlet funnel and bridged by pipeline connecting compressed air pipe and filling pipes together
Inventor: MAENNER WILLI
IPC: B65G65/30
Filed: 1992-04-18
Abstract: The supply pipe (15) of the dish (14) is connected to a compressed air generator by a pipe line (17) and the delivery pipe (16) is connected to the container filling pipe (21). A shut-off valve (19) and non-return valve (20) are located in the pipe (17) leading from the compressed air generator to the supply pipe. The compressed air and filling pipes (17,21) are flanged onto the supply and discharge pipes. The filling pipe of the container (10) which is to be emptied is closable by a non-return valve (24). USE/ADVANTAGE - Useful volume of container is increased while structural height remains same since vertical beams of container support frame are shortened.
Patent DE-4214870-A1 (DE)
Title: Formation of nonwoven fabric - using reject cloth reduced to small dimensions and fixed to body fabric by adhesive under pressure and heat
Inventor: TESCH GUENTER HORST
IPC: D04H13/00
Filed: 1992-05-05
Abstract: A process for economical production of textile material, form rejects. These are formed into small pieces and attached to a body fabric by mens of adhesive. The product is also claimed. The body fabric may be a netting, woven or knitted cloth, a web, or paper, and is coated on one or both sides with an adhesive, or adhesive foil. The layer of reject material may be selected from a wide source, and formed into the finished product, to which it may most suitably be adapted. This is stamped, cut or shredded into small dimensions of only a few millimetres. ADVANTAGE - The reject material is normally disposed of at the tip. It forms an economical product which can be employed in various directions.
Patent DE-4215244-A1 (DE)
Title: Round bale press - comprises press chamber above wedge shaped opening limited below by conveyor by finger arms above and by belts at sides
Inventor: VIAUD JEAN
IPC: A01F15/08
Filed: 1992-05-09
Abstract: One section (60) of the endless belt (58) passes from an upper roller (34) around another roller (52) which is fixed between pivotted arms (44), and then round the lower roller (28) and back up to another roller (30) above. From this roller (30) the belts run down to another roller (56) between the arms (44) and back up to a high level roller (32). They then pass around the upper (40) and lower (38) rear rollers and then forward around the low level roller (36), which is directly associated with the conveyor (48), and then vertically up to the upper roller (34). ADVANTAGE - The press chamber is fed from beneath and the material is not precompressed.
Patent DE-4216064-A1 (DE)
Title: Optical A=D converter usable at frequencies above 1 GHz - phase-shifts optical signals of coherent laser source after vertical and horizontal polarisation
Inventor: BIRKMAYER WOLFRAM DR
IPC: H03M1/36
Filed: 1992-05-15
Abstract: After distribution to the digitising stages, the optical signals are separated according to their polarisation. Thus each optical signal from a laser source is separated into horizontally and vertically polarised components. Then the phase of an optical signal of one polarisation is shifted, while the orthogonally polarised signal component remains unchanged. Both optical signals are resolved by a 45 deg. polariser in a common polarisation assembly, and then recombined and coherently superimposed. The 45 deg. angle refers to each polarisation. The relative phase shift is proportional to the electric field and thus to the applied voltage of the electric input signal. USE - For A/D conversion of RF modulated optical signals.
Patent DE-4217066-A1 (DE)
Title: Electric terminal appts. coupler to information bus - has bus coupling part and bus terminal part in part-housing
Inventor: KAMMERL FRANZ DIPL ING
IPC: H01R13/514
Filed: 1992-05-22
Abstract: A system specified bus coupling part (1) with a bus terminal part (2) are arranged in a part-housing (3). The latter can be connected with a user's specified applicator part (5) in a second part-housing (4) and a user's interface by a plug connector (6) and locks (7) to form a complete housing. In the second part-housing for the applicator part can be fitted connectors (8) for a load circuit on a device for transmission, a reception, of a field, such as IR light. Pref. the connectors (2, 8) for the bus and/or the load circuit are freely accessible by separate covers (11). USE/ADVANTAGE - For sensors etc. in an EIB-bus type building system, with adaptation facility for both the user and operator.
Patent DE-4224218-A1 (DE)
Title: Rapid, low-noise gas sensor of Kelvin probe type - uses probe output signal to measure difference between work functions of probe capacitor plates
Inventor: HANRIEDER WOLFGANG DIPL PHYS
IPC: G01N27/00
Filed: 1992-07-22
Abstract: A rapid gas sensor, for determining component concns. in a gas mixt., comprises a Kelvin probe, the oscillation of which is affected by the adsorbable compsn. of the gas mixt. to be evaluated. The probe output signal, obtd. by zero adjustment by a voltage supplied from a voltage regulating circuit, is used as a measure of the difference between the work functions of the probe capacitor plates and thus as a measure of the adsorbable compsn., the probe output signal pref. being differentiated by an RC differentiator. ADVANTAGE - The sensor has a short reaction time, operates reliably and is inexpensive to mfr.
Patent DE-4224694-A1 (DE)
Title: Electric light fitting with shade secured to bottom plate - has switch operatively coupled to lamp-shade and/or its holders, e.g. for activating speech generator when switching off or on
Inventor: HESSABI IRADJ DIPL ING
IPC: F21V23/04
Filed: 1992-07-25
Abstract: The shade (3) of the light fitting (1) is secured to a bottom plate (10) by holders (4). The light fitting contains an electric lamp, with a lamp switch (6) on the bottom plate. The switch is operatively coupled to the shade and/or to the holders. Pref. the holders are elastic and slidably coupled to the bottom plate, abutting the pushbutton type switch. Alternately a sensor switch may be used whose sensor line (5) is coupled to the shade and/or the holders. The sensor line is a flat strip cable, which may be an adhesive strip, with two conductive strips spaced so as to be bridged by a finger tip. ADVANTAGE - Simple design for easy switching-on in darkness.