baber/WOPTO huggingface dataset:
Patent DE-4002210-A1 (DE)
Inventor: KLENK MARTIN DIPL ING
IPC: F02D41/14
Filed: 1990-01-26
Abstract: In a process for cutting off the fuel supply to a misfiring cylinder of an internal combustion engine, the misfiring can be detected by any desired method. After the fuel supply is cut off, any difference between the value of misfiring data and the value before shut off is determined. If no substantial change has occured, the fuel supply remains shut off. If, however, a substantial change has occurred, fuel is supplied to the corresponding cylinder until misfiring is detected in this cylinder. The advantage of this process is that the fuel supply can be shut off very quickly without tedious preliminary test, but at the same time this rapid decision can be reversed if it proves to be premature and incorrect.
Patent DE-4002782-A1 (DE)
Title: Piston engine with rotary inlet and outlet valves - makes use of control tube rotatable in bush
Inventor: CEBULJ MITJA
IPC: F01L33/00
Filed: 1990-01-31
Abstract: The IC engine has rotatable inlet and outlet valves for the admission and release of liq. and gas. A head (2) of a working cylinder (1) has a through hole (4) arranged vertically to the longitudinal axis of the cylinder. A sliding bush (5) is enbedded in the hole and is rotatably attached at both ends with sections (7) in the housing, with a control tube (9) slidingly and rotatably arranged in the bush. USE/ADVANTAGE - IC engine which avoids the need for a special transmission to drive the valves and which reduces the radial force of the piston against the cylinder.
Patent DE-4008343-A1 (DE)
Inventor: NAKAHATA AKIMASA
IPC: C09D201/10
Filed: 1990-03-15
Abstract: This invention provides a curable composition comprising:   I) a resin component containing as essential functional groups epoxy group, and silanol group and/or hydrolyzable group directly attached to silicon atom, II) at least one crosslinking agent selected from the group consisting of carboxylic acid compounds, polyisocyanate compounds and aminoaldehyde resins, and III) at least one curing catalyst selected from the group consisting of organometallic compounds, Lewis acids, protonic acids and compounds having Si-O-Al bond or bonds.
Patent DE-4014090-A1 (DE)
Title: Tyre valve fitted to vehicle wheel - has levers and weights to cause valve to open with sudden drop in wheel speed, reducing tyre pressure
Inventor: BUCK JOHANNES
IPC: B60C23/00
Filed: 1990-05-02
Abstract: A valve (1) is fixed to a vehicle wheel by a system of levers and weights that move the valve towards the wheel centre with increasing wheel speed. A hose connects the valve to the tyre. With a sudden drop in wheel speed, e.g. on braking hard, a further weight opens the valve against a spring to reduce the tyre pressure. The partially deflated tyre now has more contact area with the road to increase the braking effect. USE/ADVANTAGE - Improved braking of vehicle wheel under emergency conditions.
Patent DE-4018292-A1 (DE)
Title: Walking stick with detachable lifting. handle - has telescopic or rigid sleeve with outer casing and pressure-knob
IPC: A45B3/00
Filed: 1990-06-07
Abstract: The walking stick incorporates a detachable lifting aid and has a telescopic or rigid slide sleeve (1) which can be locked in position. A lock release is displaced by 180 degrees on both sides and is worked by pressure on a knob. The stick can be slit on both sides and contains an  automatically operating spring pulley. The stick may have a round, square, oblong or oval casing, and can itself have any cross section. ADVANTAGE - Should the stick fall on the ground, pressure by the foot onto a release knob on both sides of the stick lifts it up again.
Patent DE-4020901-A1 (DE)
Inventor: HORVAT IVAN
IPC: C09D11/50
Filed: 1990-06-30
Abstract: The invention concerns a marking fluid based on an aqueous solution of hydroxypyrenetrisulphonic acid with an alkaline pH. To improve the properties of such a fluid in many respects, it is proposed to add to it mono-, oligo- or polysaccharides, polyols derived therefrom by reduction, or mixtures of the substances mentioned.
Patent DE-4024365-A1 (DE)
Title: Monomer building blocks prepn. - by reacting ester(s) of fatty acids with bi:functional cpds. capable of reacting with hydroxyl or amino
Inventor: FRISCHE RAINER DR
IPC: C08G69/34
Filed: 1990-08-01
Abstract: Prepn. of monomer building blocks (I) comprises reacting esters of fatty acids contg. ester hydroxyl gps., or esters or salts of fatty acids contg. amino gps. either alone or as a mixt. with suitable bifunctional cpds. which are capable of reacting with hydroxyl or amino gps. esp.  on the addn. of catalysts and in a suitable solvent. Two moles of such fatty acid esters, whose fatty acid gps. can be identical or different, are coupled with each other via the hydroxyl or amino gps. by means of the bifunctional cpd. The use of (I) is the mfr. of polymers by coupling via the carbonyl function using suitable bifunctional gps.  in the usual way is also claimed. The esters of fatty acids contg. hydroxyl- or amino gps.  are methyl or ethyl esters. The bifunctional cpds. are diisocyanates or activated dicarboxylic acid derivs. The bifunctional cpds. used in the polymer prepn. are diamines, polyamines, aminoalcohols, diols or polyols. The monomers are cleaved in the usual manner to produce the free hydroxy- or amino fatty acids. ADVANTAGE - This prepn. selectively removes functionalised fatty acids and their derivs. from fatty acid mixts. in which the fatty acid contact is relatively low. The use of the monomers offers a variation in the props.  of the synthetic materials formed.
Patent DE-4027933-A1 (DE)
Title: Drive mechanism for power-actuated swing door - is enclosed in rotatable housing with sealed cover and with overload safety device
Inventor: EBERLEIN HERBERT DIPL ING
IPC: E05F15/614
Filed: 1990-09-04
Abstract: A swinging door is opened and closed by means of an electric motor installed in a housing (2) below floor level. The door is attached by lugs (5) to a rotatable housing (4). This housing is driven by a shaft (14) which has its upper end supported in a bearing (15). The bearing (15) is mounted on a bracket (9) which is attached to the drive housing (8). The bearing is thus enclosed in the rotatable housing which is sealed with a cover. The actuating mechanism is provided with an overload safety device (16). In an alternative design the bearing may project above the rotatable housing which is then fitted with a different type of cover. USE - Power actuated swing doors.
Patent DE-4028781-A1 (DE)
Title: Tilting closure for containers such as tubes of paste - consists of two holes flush with each other, and outer and inner parts
Inventor: HEIDEN PETER VON DER
IPC: B65D47/26
Filed: 1990-09-11
Abstract: The tilting closure is for containers, esp. tubes containing paste or viscous contents emerging through a first hole (B1).  It consists of an inner fixed part (IV) enclosed by an outer tilting part (AV) containing a second hole (B2). The outer part (AV) matches inside the outer shape of the inner part (IV) and widens constantly from a common pivot point (DK) into a bell shape (GV). Two opposite facing sides are flattened to (AF) guide the tilting movement. The two protruding bell edges (L, R) act as manual controls for pressing the closure piece open or shut. USE/ADVANTAGE - The closure system does not get stuck and easily opens and closes.
Patent DE-4036905-A1 (DE)
Title: Fuel pump drive system for vehicular combustion engine - samples control signal at centre of half=cycle with sampling width dependent on engine operational parameters
Inventor: WILFERT THOMAS DIPL ING
IPC: F02D41/30
Filed: 1990-11-20
Abstract: The pump (10) is driven by a polyphase induction motor (11) subject to control (12) by a transistor bridge circuit (T1-T6) between positive and negative supply voltage lines (30,31). The phases of the motor (11) are fed from separate nodes (24-26). The quanity of fuel delivered is controlled by variation of the supply frequency and/or effective voltage according to signals from an engine speed controller sensitive to battery voltage, engine temp. etc. ADVANTAGES - Flexible control of the quantity pumped is achieved by signal sampling within a half-cycle, and the system meets the requirements of mass production.
Patent DE-4037219-A1 (DE)
Title: Linear two-stage amplifier - uses operational amplifier and output transistor in conjunction with voltage sources to limit output and provide compensation
Inventor: FOSCO GUIDO
IPC: H03F1/32
Filed: 1990-11-22
Abstract: The two stage amplifier has an operational amplifier (OV) and a transistor (T1). In particular, negative feedback is applied through the base-emitter of transistor (T1) to the converting input of amplifier (OV). A voltage limiter (D1) between the inverting input and the output of the operational amplifier (OV) limits operation of transistor (T1). Preferably, a battery or its equivalent (D2, C1, R5), is utilised to compensate for base emitter voltage. USE/ADVANTAGE - Linear amplifiers. Linear characteristics.
Patent DE-4038147-A1 (DE)
Title: Spraying of concrete mixts.
Inventor: DRS JOSEF F DIPL ING
IPC: C04B24/00
Filed: 1990-11-30
Abstract: In a process for spraying a concrete mixt. onto a substrate, the concrete mixt. contains a stabiliser which is a Ca-chelating agent (I). (I) is pref. (a) a phosphonic acid (or salt) contg. at least one OH or amino gp., (esp. aminotri(methylenephosphonic acid) and/or (b) a hydroxycarboxylic acid (esp. citric acid) or a poly- or pyrophosphate, and is used in an amt. of 0.1-5 wt.% based on the wt. of cement and mineral additives. Activation may be effected with a mixt. of alkali metal aluminate and potash, used in an amt. of 1-25 wt.% based on the wt. of cement and mineral additives. A concrete mix for dry spraying comprises 12-20 wt.% cement, 0.4-2.5 wt.% mineral additives, 68-80 wt. % aggregate, 0.1-5 wt. % (based on cement and mineral additives) of (I), 0-2.5 wt.% (based on cement) of non-mineral additives, and 0-10 wt.% moisture.
Patent DE-4038387-A1 (DE)
Inventor: STEINIKE ULRICH
IPC: D01H1/38
Filed: 1990-12-01
Abstract: The whorl-cleaning device proposed can be driven along the spinning machine and has a head with a cutting blade and suction nozzle. This head is mounted in a housing which is fitted with wheels running on rails and with a positioning device which operates using markings on the spinning machine. The positioning device thus determines, by means of these markings, the position of the whorl-cleaning device with respect to the spindles on the machine. The invention calls for the positioning device and the head (17, 117) to be a single unit mounted on the housing (1, 101) so that it is adjustable in height. In addition, the markings form a horizontal stop at a given vertical distance from the annular grooves (34). The positioning device aligns the unit vertically with the annular groove (34) when the unit is acted on by the stop. The device can also have several heads (17, 117) whose distance apart is the same as the distance between the spindles.
Patent DE-4039368-A1 (DE)
Title: Rotary IC engine - has ceramic sealing rings to reduce wear on rings and inner surface of housing
Inventor: SABET HUSCHANG DIPL ING
IPC: F01C1/063
Filed: 1990-12-10
Abstract: The rotary piston internal combustion engine has sealing rings (72) in the ring grooves (76) of the rotor wall (24) of a ceramic material. They have a ground and/or polished sliding surface (78) matching the curved inner surface (70) of the housing (10). Each has a spring (82) to apply presssure to it against the inner surface (70) of the housing (10). The ceramic material has a Mohs' hardness of more than 8.5 and pref. 9-9.5, pref. using silicon nitride or silicon carbide. The inner surface (70) of the housing (10) is coated with a wear-resistant material pref. of chrome oxide or nickel with enbedded silicon carbide crystals such as Nikasil (RTM). The ring groove (76) and sealing ring (72) have a circular outline. The sliding surfaces (78) are chamfered or rounded at the outer and inenr edges. A wave spring (82) is inserted between the sealing ring (72) and the base (84) of the ring groove (76), or a slitted spring ring (90) is fitted in a sealed fit against the outer flanks (94) of the ring groove (76). ADVANTAGE - Designed for an engine which operates on the "cat and mouse" principle, the sealing system reduces wear on the sealing rings and the inner surface of the housing.
Patent DE-4101222-A1 (DE)
Title: Vehicle axle bearing system - has taper-roller bearings on different dia. partly overlapping in axial direction
Inventor: WILKS EBERHARD
IPC: B60B27/00
Filed: 1991-01-17
Abstract: The bearing system for a vehicle axle has a pair of taper-roller-bearings on the free end of a steerable or rigid axle. The races of the bearings are of different dia. These races (4A-C; 4D-F) partly overlap in the axial direction. They can be supported from each other in the axial direction by an internal annular shoulder on an enclosing flange rotating with the wheel, and adjusted axially by a front ring (5) secured by screws to the axle tube. USE/ADVANTAGE - Low cost vehicle axle bearing with easy assembly and narrow width.
Patent DE-4101737-A1 (DE)
Title: Prepn. of olefinic cpds. by reacting carbonyl cpds. and di:azo-alkane - in presence of tert. phosphane and organo-rhenium oxide catalyst
Inventor: HERRMANN WOLFGANG ANTON PROF D
IPC: C07C49/683
Filed: 1991-01-22
Abstract: The prepn. of olefinically unsatd. cpds. (I) comprises reacting a carbonyl cpd. of formula O=CR1R2 (II) with a diazo cpd. of formula N=CR3R44 (III) in which the diazo gp.  is bonded to a non-aromatic C atom, in the presence of a tert. phosphane cpd. and a catalytic amt. of an organorhenium oxide of formula (R5)aRebOc (IV) in an organic solvent. In the formulae, R1-R4 are H or a hydrocarbyl or heterocyclic gp., each opt. substd., R3 and R4 can also be COR6 or COOR6, or one of R3 and R4 can be NO2 or Me3Si, or R3 and R4 together with the aliphatic C atom can also form a ring, R5 is a non-aromatic 1-10C hydrocarbyl gp. or 7-9C aralkyl and is at least partially fluorinated, provided that the cpd. contains not more than 3 gps. with more than 6C atoms per Re atom, and at least one H is attached to the alpha-C and a is 1-6, b is 1-4, c is 1-14, provided that a+b+c is so that the 5-7 valency of Re is maintained and c is not greater than 3b. USE/ADVANTAGE - (I) are intermediates in a wide variety of syntheses e.g. of natural substances, perfumes. The process avoids the Wittig reaction and hence the use of phosphonylides which on account of their air- and water-sensitivity, are difficult to handle. The rhenium catalysts (IV) are air-, water- and heat-stable and the reaction conditions are mild.  The reaction is highly chemoselective, in that only the carbonyl gp. in (II) reacts, despite the presence of other functional gps. All the reactants are readily available. (IV) are completely stable in water, so there is no need to use anhydrous solvents, and a two phase water/organic solvent system can be used, facilitating sepn. of prods.
Patent DE-4105352-A1 (DE)
Title: Electric machine with rotor and stator formed from compressed metallic powder - bonded by soft magnetic highly permeable metal particles covered by thin insulating layer
Inventor: HEUBNER WILHELM
IPC: H02K1/27
Filed: 1991-02-21
Abstract: The motor or generator has a rotor (2) and a stator (1). Magnets (3) are attached to the rotor (2) and the windings (4) are arranged in the stator (1). The rotor (2) and/or the stator (1) is formed from compressed metal powder. The powder mixture mainly includes weakly magnetic, highly permeable metal particles surrounded by a thin electrically isolating layer, and binding means. 0.1-8 per cent parts by weight of glass fibre, carbon fibre, ceramic fibre or plastic fibre are added to the metal powder. The thickness of the added fibres is in the same order as the size of the powder granules and the length of the fibres is pref. 0.1-3mm. ADVANTAGE - Simple and inexpensive construction with low e.m. loss despite high mechanical stress, e.g. from centrifugal force.
Patent DE-4105504-A1 (DE)
Title: Lightweight CRT - with image screen glass layers of different X=ray absorption coefficients
Inventor: NAKAMURA KOJI
IPC: H01J29/86
Filed: 1991-02-19
Abstract: A CRT has an image screen with an image region and a peripheral edge region, the image region consisting of outer and inner glass layers with different x-ray absorption coeffts. Pref. the outer layer has a greater x-ray absorption coefficient and is thicker than the inner layer.  The two layers are bonded together by welding or by a transparent adhesive having a refractive index corresponding to that of the glass.  Alternatively, the layers are spaced by a predetermiend distance. ADVANTAGE - The CRT has light wt. and x-radiation scattering from the image region is prevented.
Patent DE-4106850-A1 (DE)
Title: Synchronisation device for free-running phase regulation circuit - has phase angle corrected for transmission path delay
Inventor: MITTELMEYER HANS DIPL ING
IPC: B60L15/00
Filed: 1991-03-04
Abstract: The synchronisation device provides a required phase angle value (theta 2) from a phase angle value (theta) and its first differential (omega), transmitted over a relatively long transmission path. The required phase angle value (theta 2) and the transmitted phase angle value (theta) are used to obtain a delay value corresponding to the transmission time of the transmission path, which can be added to the phase angle value (theta), to provide a time corrected phase angle values (theta 2) which is then transmitted. USE - For magnetically-levitated vehicle drive control
Patent DE-4107021-A1 (DE)
Title: TV monitor in car passenger compartment - has filter with variable transparency in front of monitor screen for image visibility adjustment
Inventor: TODORIKI TSUYOSHI
IPC: H04N5/72
Filed: 1991-03-05
Abstract: In-front of the monitor (1) screen a filter (2) is fitted with a variable transparency for adjusting a visible region of the image. The adjustment blocks the screen light in the direction of the driver's seat. A sensor detects the car movement and generates a corresp. signal (4). A control system (9) operates the filter in dependence on the signal such that no image is transmitted from the screen to the driver's seat side, when the car is moving. A dead zone at the filter is generated by application of a preset voltage, interrupting transmission of TV images to the driver's seat. The visible region is limited by a laminar filter (10) coacting with the screen filter to form a second dead zone at the driver's  position. ADVANTAGE - Widened dead zone in driver's direction, even if driver should shift towards front seat passenger.
Patent DE-4113519-A1 (DE)
Title: Continuous ultrasonic testing appts. for pipe longitudinal weld seam - has ultrasonic test head with vibrator, holder with roller support and water coupling chamber
Inventor: KLATZER STEFAN DIPL ING
IPC: G01N29/27
Filed: 1991-04-25
Abstract: The arrangement for the continuous measurement of a pipe's (3) longitudinal weld seam (2) immediately after welding contains at least one ultrasonic testt head (14) with a vibrator (15) adjustable w.r.t. the head angle relative to the pipe surface (4).  The test head and pipe are coupled via water. The head is mounted adjustably in a holder with a roller support enabling it to move in a horizontal plane (HE) transverse to the pipe's central longitudinal plane (MLE). The coupling water path is formed as a water chamber supplied with weld cooling water at below 20 deg.C. USE/ADVANTAGE - The arrangement is simplified in construction and use. It can be used for testing pipes with different dia.
Patent DE-4117180-A1 (DE)
Title: Ignition system with detachable cover for motor vehicle IC engine - has additional thermal decoupling provided by layer of insulation between ignition coils and cylinder head cover
Inventor: HAUSSMANN GERHARD DIPL ING
IPC: F02P3/02
Filed: 1991-05-25
Abstract: Each sparking plug is supplied from a coil (8) lying on a surface (9) forming part of the cylinder head cover (5). All plugs are protected by a common cover (14) which rests on a higher surface (12) and is held in position by withdrawable screws (27) and washers (28). The heat sink (11) under each coil (8) is sepd. from the cylinder head cover (5) by an additional thermal insulation layer (25). The cover (5) itself is secured by longer screws (26) to the cylinder head. ADVANTAGE - Individual sparking plugs are easily accessible without detriment to dissipation of heat from ignition coils.
Patent DE-4117784-A1 (DE)
Inventor: SCHWEDEN JUERGEN DR
IPC: A61K47/48
Filed: 1991-05-31
Abstract: Described is a new method of preparing protein/polyalkylene glycol conjugates by reacting an activated polyalkylene glycol derivative with a protein.
Patent DE-4122159-A1 (DE)
Title: Reflector for bicycle wheel - has convex rear and cylindrical side reflective surfaces and convex translucent front one
Inventor: HARTMANN JAN DIRK
IPC: B62J6/20
Filed: 1991-07-04
Abstract: The reflector has a transparent and partly-reflecting body on a bracket fixed to the spokes of a bicycle wheel. The body has a reflective convex-domed rear side (9), a reflective cylindrical side surface (8), and a convex-domed translucent front side (7). The bracket can have a slot-shaped rear opening (3) for fixing to a spoke, which can be undercut to fit round the nipple by which the spoke joins onto the rim. There can be two or more bodies, facing to the same or opposite sides, and two slots in the bracket so as to fit over adjacent spokes. ADVANTAGE - Ease of installation and compact assembly on wheel.
Patent DE-4122402-A1 (DE)
Inventor: DIAMANTSTEIN TIBOR PROF
IPC: C12N15/24
Filed: 1991-07-04
Abstract: Described is the use of interleukine 10 to produce drugs with a tumour-inhibiting action.
Patent DE-4125342-A1 (DE)
Title: Rectangular articles positioner for palletising-machine conveyor - is controlled by computer realigning individual articles by engagement with chain-driven buckets undergoing selective rotation
Inventor: STAMBERA ADOLF
IPC: B65G47/244
Filed: 1991-07-31
Abstract: A number of buckets (1) rotatable about their vertical axes are arranged on a pair of continuously revolving chains (2) above the feeder conveyor (8) on which the articles (G) are arrested at a gate (24). When an optical barrier (19) shows at least three articles in position, the gate (24) opens allowing each article (G) in turn to proceed for realignment by a bucket (1) rotated through either 90 or 180 deg. by fingers (10, 11) and stops (25, 26) controlled by a computer. ADVANTAGE - Simplifies process so that single packages can be set immediately into predetermined position for palletisation.
Patent DE-4127367-A1 (DE)
Title: Folding wheelchair with pneumatic tyres - can be folded flat for convenient transport and storage
IPC: A61G5/08
Filed: 1991-08-19
Abstract: The folding wheelchair has a base frame (1) made from a tube bent to a U shape with wheels (8) fitted with pneumatic tyres fitted at the open end of the U shape. The base frame (1) supports a second U shape frame (4) which slopes upwards and is supported by a strut. The lower end of the strut is attached by H shaped members (3) to the base frame (1). The second U shaped frame and the strut together support a chair with a seat (7) and a backrest (12). The pivoted joints of the chair structure enable it to be folded flat for convenient transport and storage. USE/ADVANTAGE - Wheelchair which can be folded flat for transport or storage.