baber/WOPTO huggingface dataset:
Patent DE-3835917-A1 (DE)
Title: Hydraulic shock absorber
IPC: F16F9/50
Filed: 1988-10-21
Abstract: Hitherto known shock absorbers for motor vehicles in the initial phase amplify the shock and the body oscillation when running over uneven ground. A new damping law is intended to remedy this defect. The shock absorber piston acts on a free piston by way of a tension and compression spring, the spring force of which actuates a double-acting pressure valve in the shock absorber piston. The double-acting pressure valve results in a linear behaviour of the damper force in response to the spring deflection from the middle position. Due to the double-acting non-return valve, connected parallel to the double-acting pressure valve, the damping is operative only in rebound into the middle position. In all motor vehicles the new shock absorber permits a distinct minimising of the oscillation amplitudes and the number of oscillations of the vehicle mass for the same suspension parameters.
Patent DE-3838845-A1 (DE)
Inventor: POTTHOFF HEINRICH DR
IPC: B61F5/30
Filed: 1988-11-17
Abstract: The invention relates to a spacial suspension of individually sprung railway vehicle wheels, in which the wheel unit comprising the wheel, the wheel bearing, the non-rotating wheel carrier and, if applicable, a drive and/or brake mechanism can perform steering and/or suspension movements with respect to the vehicle, and in which the wheel carriers are movably connected via links to the vehicle and to the wheel carrier of the opposite wheel and the point of articulation of at least one link (17-20) on the vehicle (21) can be adjusted according to the travelling state, such as forward or reverse travelling, travelling straight or round a bend, braking or driving and/or according to the state of wear of the wheel rims. 
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Patent DE-3841636-A1 (DE)
IPC: E04G13/02
Filed: 1988-12-10
Abstract: Until now, no satisfactory proposals have been made for a more reliable protection of the flexible form work used in producing essentially round concrete works below ground. It is proposed to use the joining of individual mats known from the case of lagging mats for underground work also as the tying means, made up of such joined-together mats, which interlink in a way resistant to tensile forces when pressure is exerted by the concrete filled into the form work.
Patent DE-3843117-A1 (DE)
Inventor: KUEFNER-MUEHL ULRIKE DIPL CHEM
IPC: C07D519/00
Filed: 1988-12-22
Abstract: Xanthines of formula (I) and their optical isomers and acid-addn. salts are new: R1 = 1-6C alkyl, 3-4C alkenyl or 3-4C alkynyl; R2 = 1-6C alkyl, 3-4C alkenyl, 3-4C alkynyl or opt. substd. benzyl; R3 = (a) C-bonded satd. or unsatd. 5- to 7-membered heterocyclyl contg. one or more O and/or S atoms, opt. substd. by 1-6C alkyl, oxo, CHO, CH2OR4, CH2OR7, COOR4 or CONR5R6; where furyl and thienyl gps. are opt. also substd. and tetrahydrofuryl gps. are opt. also substd; (b) 4-8C cycloalkenyl opt. substd. by 2-4C alkenyl; (c) a 4-8C cycloalkanone or cycloalkanol gp. opt. alpha-substd. by 2-6C alkenyl, 2-6C alkynyl, opt. substd. benzyl, CH2OR4, CH2COOR7 or CH2CH2CN; (d) 3-8C cycloalkyl opt. substd. by 1-6C alkyl, =CH2, =NNHAr, =NNHR, =NOH, OCONHAr, OCONHR, OR4, OR7, (CH2)xCOOR4, (CH2)xNR4R4, (CH2)xCONR5R6, (CH2)xOR4, (CH2)xOR7 or =CHA; (e) 3-8C cycloalkyl gem-substd. by OH and 1-6C alkyl, vinyl, allyl or opt. substd. phenyl or (1-4C alkyl)phenyl; (f) 3-8C cycloalkyl gem-substd. by ORa and ORb, or (g) 3,4-methylenedioxyphenyl, 3,4-ethylenedioxyphenyl, 2-fluorenyl, 9-fluorenyl or a bicyclic gp., e.g. of formula (i)-(iii). Ar = opt. substd. aryl; R = 1-6C alkyl, x = 0-4; A = COOR4, CN, CONR5,R6, CH=CHCOOR4, CH=CHCONR5R6, CH2OR4 or CH2OR7; Ra and Rb = 1-4C alkyl, or Ra+Rb = 2-3C alkylene opt. substd. by 1 or 2 of 1-5C alkyl, 2-6C alkoxycarbonyl and 1-5C hydroxyalkyl; R4 = H, 1-13C alkyl, 3-13C alkenyl, propargyl, trityl or opt. substd. 3-6C cycloalkyl or benzyl; R5 = H, 1-6C alkyl or opt. substd. 3-6C cycloalkyl; R6 = H, 1-6C alkyl, opt. substd. benzyl, (CH2)nNR5R5, ((CH2)nO(CH2)mO)k(CH2)nNR5R5, (CH2)nQ(CH2)nNR5R5, or C-bonded piperidinyl opt. substd. ; or NR5R6 is a 5- to 7-membered ring opt. contg. another heteroatom and opt. substd. ; n = 2-8; m = 2-6; k = 0 or 1; Q = piperazine-1,4-diyl opt. substd. ; R7 = acyl derived from a natural amino acid, 2-14C alkanoyl, methyloxyacetyl, camphanoyl, abietoyl, 4-aminobutyryl, opt. substd. benzoyl or COB1; B1 = opt. substd.
Patent DE-3843728-A1 (DE)
Title: Superconductive coil arrangement and a method for its production
Inventor: SHIMAMOTO SUSUMU
IPC: H01F41/04
Filed: 1988-12-23
Abstract: In the case of a superconductive coil arrangement, superconductive wires (12) are laid in a casing tube (11) which is also used as a conduit for passing liquid helium through. The casing tube (11) is inserted into a reinforcing vessel or housing (14) which comprises two vessel segments (14-1, 14-2) which are welded to one another. The reinforcing vessel (14) is surrounded by winding insulation (15) and earth or ground insulation (16). <IMAGE>
Patent DE-3900278-A1 (DE)
Title: Trim for the lower part of leather goods and a reinforcement containing a trim
Inventor: AMBAL GILBERT
IPC: B68F1/00
Filed: 1989-01-07
Abstract: Trim and reinforcement, consisting of the trim and an attachment for leather articles, in which the trim and the attachment contain devices for their connection.
Patent DE-3907781-A1 (DE)
Title: Method and device for the digital measurement of phase
Inventor: GERRATH KARL-HEINZ DR
IPC: G01R25/00
Filed: 1989-03-10
Abstract: A method and device for the digital measurement of phase with increased resolution, a phase modulation being impressed on one (S1 or S2) or both signals, the phase difference of which is to be detected, at a subharmonic f1/n or respectively, f2/n already during the generation of the signals or, for example, with the aid of a controlled phase shifter (5) in the signal path or in that, alternatively, the sampling clock for the phase meter (1, 2, 3, 4) is modulated correspondingly in such a manner that the zero crossings of the signal of a multiplier (3), which is to be sampled and to be averaged, are distributed over various sampling time slots in a defined manner during several periods, in which method the position of the zero crossing can be determined with increased resolution from the known distribution over at least one modulation period, for example with the aid of a filter (4) buffer memory (8), clock generator (7) and accumulator (9), and thus the amplitude of the interference signals due to the time quantisation can be reduced. <IMAGE>
Patent DE-3911650-A1 (DE)
Title: Method for mechanically stacking welded wire meshes and device for carrying out the method
Inventor: ANDERS HELMUT
IPC: B21F33/00
Filed: 1989-04-10
Abstract: In a method for mechanically stacking welded wire meshes while alternately turning the same, in that a supplied mat is grasped above the stacking location by a crossmember with holding elements, raised, turned about its longitudinal centre axis, lowered again and after the supply of a mesh which is not to be turned is deposited on the stack together with the latter, provision is made for the mesh (1) which is turned about its longitudinal centre axis and lowered again to be grasped together with a supplied mesh which is not to be turned by the holding elements (17) of the crossmember (15) and both meshes are supplied together to the mesh stack, the crossmember automatically adapting to the respective stack height. <IMAGE>
Patent DE-3915305-A1 (DE)
Title: New water soluble reactive azo dyestuff cpds. - for dyeing and printing e.g. wool, leather, polyamide, silk or cellulose esp. cotton
Inventor: BUECH HOLGER MICHAEL DR
IPC: C09B62/44
Filed: 1989-05-10
Abstract: New water-soluble azo dyestuffs with sulphonyl gp(s) and 2-substd.. -4-cyanamido-s-triazin-6-yl-amino gp(s) are of formula (Y-SO2)p-F -(NR-ZI)n (I) (where F = the radical of a mono- dis- poly- or heavy metal complex azo dyestuff, ZI = a substd. s-triazinyl gp. of formula (II), R = H or 1-4C alkyl (opt. substd. by halogen, OH, CN, 1-4C alkoxy, 2-5C alkoxycarbonyl, COOH, sulphamoyl, SO3H or OSO3H, X = CI, Br, SO3H, 1-4C alkylsulphonyl or phenylsulphonyl, Y = vinyl, beta-(thio)sulphato-ethyl, beta-phosphato-ethyl, beta-2-5C alkoanoyloxy-ethyl, beta-benzoyloxy-ethyl, beta -(sulphobenzoyloxy) -ethyl, beta-(p-toluenesulphonyloxy) -ethyl or beta-halo-ethyl, p and n = 1 or 2. USE/ADVANTAGE - (I) are used for dyeing (including printing) material, esp. fibre material, contg. OH and/or carbonamido cpds. They are suitable for dyeing silk, leather, wool, polyamide and polyurethane fibres and esp. natural and regenerated cellulose, e.g. cotton, linenn, hemp and viscose and mixts. e.g.  of cotton with polyester, or polyamide fibres. (I) are reactive dyestuffs with high reactivity, good fixing power and very good build-up. The dyeing has good fastness.
Patent DE-3916366-A1 (DE)
Inventor: OPPENLAENDER KNUT DR
IPC: C07C229/16
Filed: 1989-05-19
Abstract: Novel reaction products of aminoalkylenepolycarboxylic acids with secondary amines and their use as additive to middle distillates, if desired together with ethylene copolymers known per se as flow- improving agents and with conductivity-improving agents.
Patent DE-3921940-A1 (DE)
Title: Switching circuitry for telephone subscriber party line - has current supply circuit using exchange battery and call current recognition circuit
Inventor: REHM THOMAS DIPL ING
IPC: H04M1/715
Filed: 1989-07-04
Abstract: The circuitry contains a number of modules, i.e. a current supply circuit for a supply voltate of +5V from the connecting line, a dialling current recognition circuit which transmits a control criterion with incoming dialling current, and a memory for storing the dialling current for a presettable time period after stopping. A holding circuit bridges controllably the loop interruption and permits a loop current flow over the connecting line.  A loop current recognition circuit is associated with each connectable subscriber, determining the loop, current flow over each subscriber line and transmitting a corresp.  control criterion. Each subscriber has a switching relay with a series connected driver. ADVANTAGE - Exclusive current supply for two-wire subscriber lines over common connecting line.
Patent DE-3925814-A1 (DE)
Title: Soldering system for circuit board surface mounted devices - has solder frame for simultaneous soldering of circuit-mounted devices and edge connector contact tongues
Inventor: BAHL PAUL
IPC: H05K3/34
Filed: 1989-08-04
Abstract: The soldering system uses a solder frame supporting the circuit boards (1) with the attached surface mounted devices (2), before the frame is lapped by a solder wave.  Each of the circuit boards (1) has an edge connector provided by contact tongues attached to a carrier strip (4).  The circuit boards (1) are supported by the solder frame (10) so that the solder wave simultaneously solders the surface-mounted devices (2) and the contact tongues of the edge connector. Pref. the circuit boards (1) are supported between spaced longitudinal rails (14) of the rectangular solder frame via the edge connector carrier strip (4) and the opposing edge of the circuit board (1). ADVANTAGE - Simultaneous soldering of circuit mounted devices and edge connector.
Patent DE-3930937-A1 (DE)
Inventor: BOLTE GEORG DIPL CHEM DR
IPC: B21D51/26
Filed: 1989-09-15
Abstract: A two-piece can for beverages is provided, in which the intermediate bottom portion, which connects a spherically curved central bottom region to an outer truncated cone-shaped bottom region, has a connecting wall to the spherical bottom portion, said connecting wall being inclined approximately parallel to the outer truncated cone-shaped bottom portion.
Patent DE-3932904-A1 (DE)
Title: Aq. dispersions contg. natural rubber and thermoplastic polymer - with polymer based on styrene] polymethacrylic acid alkyl ester(s) and vinyl] ester useful in mfr. of coatings and binders for organic fibre
Inventor: SCHOLL THOMAS DIPL CHEM DR
IPC: C08L21/02
Filed: 1989-10-03
Abstract: Aq. dispersions (I) contg. (1) 50-99.9 pref. 80-99 wt.% natural rubber and (2) 0.1-50 pref. 1-20 wt.% thermoplastic polymer. Polymer (2) is selected from: (a) styrene polymers contg. at least 10 wt.% styrene units; (b) polymethacrylic acid 1-4C alkyl esters contg. at least 90.5 wt.% methacrylic acid alkyl ester units; (c) vinyl ester polymers contg. 10-50 wt.% vinylester units; and has an ave. particle dia. also of 0.5-2.5 pref. 0.5-1.5 microns. Coagulants and vulcanisers produced from (1) are also claimed. USE/ADVANTAGE - (I) are used in the manufacture of impregnators, coatings, and laminates of fabric and paper, as binders for animal, plant and synthetic fibres, in the modification of bitumous masses for road surfaces, adhesives and seals. Products manufactured using (I) have higher tear strength, higher elongation and good ageing resistance.
Patent DE-3934085-A1 (DE)
Title: Disposal of heavy metal-contg. solids and liquids - using hydraulic binder giving low water permeability prod.
Inventor: LUKAS WALTER PROF DR
IPC: C04B28/08
Filed: 1989-10-12
Abstract: In the immobilisation and consolidation of heavy metal-contg. solids and liq. using an at least latent hydraulic binder, extremely low elutriation' and low water permeability are achieved by using a binder comprising (a) an at least latent hydraulic silicate component (flyash, boiler ash, slag or the like) of below 100 microns particle size, at least 80 wt.% of the particles being below 40 microns size; (b) an alkaline and/or alkaline earth component based on CaO, Ca(OH)2, MgO and/or Mg(OH)2, as activator for the latent hydraulic component; and (c) anhydrous or hydrated calcium sulphite and/or calcium sulphate; the wt. ratio (a):(b+c) being 60-92:8-40 and the (b) content being at least 3-5 wt.%. This binder is mixed in the wt. ratio 20-60:40-80 with the material to be disposed of, at a water content of 15-32 wt.% (based on the hydrated phase-forming substance), and the mixt. is compacted and then hardened. ADVANTAGE - A consolidated product with a lower water permeability than in prior art is obtained at a lower binder cost.
Patent DE-3940798-A1 (DE)
Inventor: EILER PETER DR ING
IPC: B66C23/78
Filed: 1989-12-08
Abstract: The invention relates to a support for a vehicle crane, in particular a telescopic crane, which increases the effective contact surface. The support comprises supporting box girders (1) in the travelling mechanism frame which extend, horizontally and perpendicular to the longitudinal direction of the frame, from one side of the travelling mechanism to the other. At least two webs (2, 3) can slide in each supporting box girder (1), can be pushed out of the box girder on opposite sides and are equipped with supporting feet (2a, 2b) associated with opposite sides of the vehicle. The aim of the invention is to improve a crane support of this class by designing the supporting basis of the vehicle crane so that higher loads can be supported without increasing the effective contact surface. This aim is achieved because each supporting box girder (1) is guided so as to slide longitudinally in a guide (1a) and can be pushed out of the guide (1a) on opposite sides.
Patent DE-4001503-A1 (DE)
Title: Front-loading reproducing appts. e.g. for tape recordings - has flap covering insertion slot and contg. operating unit for controls
Inventor: UTSUGI NOBUO
IPC: G11B33/10
Filed: 1990-01-19
Abstract: This appts. for playing back, e.g. tape, recordings has a housing (2) contg. a playback device and a slot (4) on its front side, through which the recording medium can be inserted.  On the front of the housing a gate opens and closes the slot.  This  has an operating unit for controlling the operation of the a playback device. The gate comprises an inner gate (6), whose movement relates to the housing and opens or closes the slot, and an outer  gate (7), which contains the operating unit and is fixed to the inner gate, but is removable. USE - Provides automatic loading of tape cassettes, useful for stereo-systems in motor vehicles.
Patent DE-4006194-A1 (DE)
Inventor: PETER JULIUS DR
IPC: B29B7/18
Filed: 1990-02-28
Abstract: The invention is based on a method for making rubber mixtures, in which, in a first stage, a basic mixture is prepared in an internal mixer (1) with floating weight and, in a second stage, a finished mixture is prepared in an internal mixer (9) without floating weight in batches, to be precise dispensing with intermediate storage. In order to improve the cooling in the internal mixer without floating weight, according to the invention its inner space is charged with air (13, 14) which is of a dryness avoiding the precipitation of condensation. To achieve the same, there is provided between the two internal mixers a substantially air-tight duct (8), in which there is also space for the bottom closure of the internal mixer with floating weight, in the swung-out state. 
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Patent DE-4007849-A1 (DE)
Title: Furnace for burning solid fuel - has flow of primary and secondary air controlled independently of each other
Inventor: HOFMANN HERMANN
IPC: F23L9/00
Filed: 1990-03-12
Abstract: A furnace (100) which is cooled either by air or water and which burns solid fuel has a combustion chamber with primary air inlet ducts (150) in its upper part. The combustion chamber has a floor (160) formed by a grid made of heat resistant material and passageways for the flue gases are formed in the floor. The flue gases flow through the floor through the secondary air duct in the combustion chamber floor and the side wall of this duct has an opening (163) which forms the inlet for the secondary air. This arrangement of the air inlet duct enables the flow of primary and secondary air to be controlled independently of each other. USE - Solid fuel furnaces.
Patent DE-4008346-A1 (DE)
Title: Device for closing lorry load chamber - involves sheets firmly attached to chamber rear or side surfaces over frame
Inventor: TRINKAUS GUSTAV
IPC: B60J5/06
Filed: 1990-03-15
Abstract: At least one of the sheets (2) located on the side surfaces (4) and/or on the rear surface of the load chamber can be raised and lowered by a lifting draw rope arrangement. A solid part (17) comprising a wooden board or a metal rail, partic. aluminium, is fitted in the sheet which is raised or lowered on its lower long side. The lifting draw rope arrangement (10) runs over wheels (7,8), and the solid part (17) is fitted in a loop of the sheet, and where it is of metal is welded into position. The sheet is guided in each case on its sides by lugs or clamps in guide rails. USE/ADVANTAGE - To permit rapid closure and opening of the load chamber of a lorry.
Patent DE-4010889-A1 (DE)
Title: Manufacture of laser diode with heterostructure - using masking and etching processes to form layers
Inventor: SANG-BAE KIM
IPC: H01S5/00
Filed: 1990-04-04
Abstract: A laser diode is formed with an electrode (1), isolation layer (2), 'n' impregnated In.P layer (3), cover layer (4), a In. boundary surface (5), an In.P current blocking layer (6) and an active In.Ga. As.P layer (7). The structure is formed in a series of stages, with the first involving the use of a Si.O2 etching mask formed on the cover layer (4). After etching the centre layer (4) remains while the surrounding regions are removed. Subsequent steps form the remaining sections using further etching. USE/ADVANTAGE - For optical communication system. Improves quality of laser diode and avoids damage during manufacture.
Patent DE-4012040-A1 (DE)
Title: New triazolo-(4,3-a)pyridine(s) and N'-(2-pyridyl)-hydrazone(s)
Inventor: GEISLER JENS DIPL CHEM DR
IPC: A01N43/90
Filed: 1990-04-11
Abstract: Substd. 1,2,4-triazolo-(4,3-a)pyridines of formula (I) and substd. N'-(2-pyridyl)hydrazones of formula (II) for use in herbicidal compositions are new, where A = 5-membered heterocycle (comprising 1-3 of N, O or S; ring C's opt. substd. with halo, 1-4C alkyl or halo (1-4C)alkyl and 1 ring N is opt. substd. with 1-4C alkyl), 1-10C alkyl (opt. substd. with B), 2-10C alkenyl (opt. substd. with B, or 2-10C alkynyl (opt. substd. with B); B = halo, Cn, 3-6C cycloalkyl, halo-(3-6C)cycloalkyl, cyano-(3-6C)cycloalkyl, 1-4C alkyl-3-6C cycloalkyl, halo(1-4C)alkyl-(3-6C) cycloalkenyl, halo(1-4C)alkyl (3-6C)cycloalkenyl, cyano (1-4C)alkyl (3-6C)cycloalkenyl (i), 3-8C cycloalkyl (ii) or 3-8C cycloalkenyl; (iii); (i), (ii) and (iii) are opt. substd. with halo, CN, 1-4C alkyl, halo(1-4C)alkyl, cyano (1-4C)alkyl, 2-4C alkenyl, halo(2-4C)alkenyl, cyano(2-4C)alkenyl, 2-4C alkynyl, halo(2-4C)alkynyl, cyano(2-4C)alkynyl (iv), Ph(v) or benzyl (vi); R1 = halo, Oh, 1-6C alkyl, halo (1-6C)alkyl, 1-6C alkoxy, halo (1-6C)alkoxy, 1-6C alkylthio, halo(1-6C)alkylthio, 1-6C alkylsulphinyl, 1-6C alkylsulphonyl, 1-6C alkoxy; carbonyl, phenyl (1-6C) alkoxycarbonyl, Ph, phenoxy.
Patent DE-4017619-A1 (DE)
Title: Vehicle rear-view mirror
Inventor: YOSHINO KUNIO
IPC: B60R1/08
Filed: 1990-05-31
Abstract: The vehicle rear-view mirror, adjustable for day and night vision, has a mirror (M) fitted in an open fronted casing (10). A spherical-ended stem (1,3) extends from the vehicle into the casing and is clamped in a support assembly (5,7) inside the casing, By moving the casing on the spherical end (3) the mirror can be positioned to suit a particular driver. The clamping force between casing and spherical end is adjusted by a tool inserted through at least one hole (10d) provided in the lower wall (10c) of the casing.
Patent DE-4021233-A1 (DE)
Title: Rotary-piston fluid engine - comprises four or more machines together forming power units and working machines
Inventor: BAEUML ALFRED
IPC: F01C1/18
Filed: 1990-07-02
Abstract: The rotary-piston engine uses cycloidal and double-point teeth to generate and supply energy. It comprises four or more such machines, connected together to form three different kinds of circuit by pipes (2, 3, 4). They are connected at the inlet side to form power units, and at the outlet side to form working machines. ADVANTAGE - Autogenous, with no fuel consumption or environmental pollution.
Patent DE-4022240-A1 (DE)
Title: Transportable computer system mounting unit for office - has frame with locations for units and retaining frame for computer
Inventor: ZETZSCHE HANS
IPC: A47B21/00
Filed: 1990-07-12
Abstract: The computer system mounting unit is constructed of a metal section frame (2). The base has extended sections (6) with supporting feet (16-19) and a pair of wheels (14) that content the floor when the unit is tilted slightly. The frame is divided into sections to support a monitor (48), a keyboard (46) and the main computer unit (45). The computer is retained by 'U' shaped frame (44) that aligns with fixed members (35). The frame can be adjusted to suit different size computers. ADVANTAGE - Securely retains computer unit.
Patent DE-4022459-A1 (DE)
Title: Base frame for table, desk or bench - consists of table top on base sections, with trough shaped part in which are lengthwise struts
Inventor: WAIBEL WALTER
IPC: A47B13/02
Filed: 1990-07-14
Abstract: The underneath frame (2) for a table, esp. for an office, laboratory or work desk, has a table-top (42) fixed on top of it. The two ends (10,12) have base sections (52) supporting the table-top (42) on the ground. The base-sections (52) have horizontal supports (54) fitting into rectangular holes (30,32,34,36) in the frame ends (2). The rame (2) is shaped like a trough (4) open at the top and ends, inside which are struts (16,18) at right angles to the base-plate (14) of the trough, and extending the entire length of the trough (4). USE/ADVANTAGE - The support frame for a table, desk or such like is simple and economical to produce and can be made to any length with sufficient stability.