baber/WOPTO huggingface dataset:
Patent DE-4035695-A1 (DE)
Title: Electric machine with at least one roller bearing for locating shaft - arranged in bearing bore of metallic bearing shield fixed at machine housing
Inventor: LEITGEB WILHELM DR
IPC: H02K11/40
Filed: 1990-11-09
Abstract: A voltage limiter (11) is connected between the bearing shield (5) and the outer race (8). At least two Z diodes with opposing polarity connected in series are arranged between the bearing shield (5) and the outer race (8). A first series circuit (1) consisting of a Z diode (11) and a diode (12) with a polarity opposed to this is connected between the bearing shield (5) and the outer race (8). Also a second series circuit (2) consisting of a Z diode (11) and a diode (12) with a polarity opposed to this is connected antiparallel to the first series circuit. USE/ADVANTAGE - Electric machine with at least one plain or roller bearing. Prevents dangerous voltages at machine rotor (2) despite insulation of bearing.
Patent DE-4040051-A1 (DE)
Title: Gas oven burner with two or more burner tubes - uses tubes in different combinations to achieve wide temp. range and gas quantity controller
Inventor: LUENENBUERGER WALTER DIPL ING
IPC: F24C3/12
Filed: 1990-12-14
Abstract: A gas oven burner has a temp. regulator and gas quantity controller with an adjustment knob for setting the gas flow to the burner. The burner has at least two burner tubes (1',2') with different temp. control ranges. The temp. control range for the two burners together is from 150 to 320 deg. C and that for the smaller one alone is 70 to 170 deg. C. The large burner tube is only used with the smaller one whereas the smaller one can be used on its own. ADVANTAGE - Gas oven burner has wide temp. control range with suitable gas quantity controller.
Patent DE-4101521-A1 (DE)
Title: Wavelength selection for single frequency microcrystal laser - using half-wavelength plate for first wavelength selection and polarisation analyser for final wavelength selectivity
Inventor: HEINEMANN STEFAN
IPC: H01S3/06
Filed: 1991-01-19
Abstract: The method involves using monomodal microcrystal lasers which emit several frequencies and have an active medium in the form of a solid state microcrystal of reduced thickness. The end surfaces of the crystal act as resonator reflectors and semiconductor laser diodes provide a pumping light beam. A half wavelength plate (13) is arranged between the semiconductor diode (10) and the microcrystal (12) in order to select first laser emission wavelengths. A polarisation analyser (14) arranged after the microcrystal allows a final selection of wavelengths. USE/ADVANTAGE - For interferometric measurements. Allows both monomode and natural frequency operation.
Patent DE-4104842-A1 (DE)
Title: Electronically-regulated mains supply circuit - has two transformer primaries supplied from independent DC sources
Inventor: BERTSCH BRUNO ING GRAD
IPC: H02M3/335
Filed: 1991-02-16
Abstract: The circuit uses a transformer (5) with at least two primary windings (6,7) wound around the same magnetic core. Each is coupled to an independant DC source (1,2) via a respective clock controlled stage (3,4). The latter are supplied with clock signals (T) provided by a regulator (12) via a monitoring and switching stage (13), responding to the detected voltage level (U1 ist, U2 ist) of each DC source (1,2). Pref. a pulse width modulation regulator (12) is used, supplied with a voltage difference signal. This is obtained by comparing the actual and the required secondary voltage. ADVANTAGE - Min. technical complexity.
Patent DE-4110669-A1 (DE)
Title: Appts. for suction and sepn. of solid-liq. mixt. - comprises removable sieve basket in chamber, evacuated by suction pipe and closed by removable lid with external suction nozzle
IPC: B01D29/11
Filed: 1991-04-03
Abstract: Appts for suction and subsequent sepn. of solids/liq. mixts. has a removable sieve basket (2) fitted in a chamber (1) which can be evacuated by a suction pipe (10) and which is closed by a removable lid (5) with an external suction nozzle (8). The solid/liq mixt. is drawn by suction into the chamber above the basket and is sepd. into a solids fraction, which is retained in the basket, and a liq. fraction which flows downwardly through the basket onto an umbrella like cover (11) covering the suction pipe (10). The liq. flows into the bottom part of the chamber, from which it is delivered out of the chamber through a flow direction-dependent pipe line (15) by means of a level controlled centrifugal accelerator (13). USE/ADVANTAGE - The appts is useful in the disposal of plastics granulate/oil mixts. from plastics moulding operation, paint residue/alkali stripper mixts from building facade renovation, and the like. The appts. is mobile and easy to use and employs atmos. pressure drop simultaneously with suction intake of the mixt. for sepn. of the mixt. and continuous further transport of the sepd. liq.
Patent DE-4119170-A1 (DE)
Title: Synergistic compsn. for treating neuro-dermatitis - comprises triamcinolone acetonide, salicylic acid or its acetyl deriv., and coal tar extract
Inventor: MILTNER GEB HERBER
IPC: A61K35/04
Filed: 1991-06-11
Abstract: Compsns. for topical treatment of neurodermatitis or related disorders contain triamcinolone acetonide (I), a coal tar deriv. (II), and a cpd. (III) selected from salicylic acid (IIIa) and acetylsalicylic acid (IIIb). Pref. the compsns. are ointments or creams contg. 0.02-0.04 (esp. 0.03) wt.% (I), 1-1.9 (esp. 1.5) wt.% (II) and 1-1.9 (esp. 1.5) wt.% (III). (II) is `Pix Lithanthracis' or a coal tar distillate. USE/ADVANTAGE - The compsns. may be used to treat neurodermatitis (a genetically predisposed immune disorder) and all dry forms of eczema with hyperkeratosis. The compsns. can contain less (I) than prior art compsns. e.g., `Delphicort' (RTM), thus reducing the risk of side effects, and are effective in cases resistant to other treatments.
Patent DE-4119509-A1 (DE)
Inventor: NAGEL DIETER DR ING
IPC: G01S13/58
Filed: 1991-06-13
Abstract: The invention concerns a method of determining simultaneously the range and speed of a target, in particular an aircraft target, using a radar system operating at a high pulse-repetition frequency. The received signal, which is essentially the transmitted signal reflected by the target, is analysed for Doppler effect and the group delay of the target spectrum  determined. The range of the moving target is then determined from the group delay.
Patent DE-4128962-A1 (DE)
Title: Solar or wind generator combination with rechargeable battery - has DC generator decoupled by diode(s) and protected against reverse current
Inventor: KUFFER LEONHARD
IPC: H02P9/48
Filed: 1991-08-29
Abstract: The d.c. generator, e.g. solar cells, are decoupled by at least one diode (D7). The current from a wind driven alternator, or three-phase generator is connected to a nodal point via a rectifier (D1-D6). The system uses a parallel control with a variable shunt of a transistor (T1), resistor (R1), capacitor (C1) and a diode (D8). The transistor and the resistor are in series, but in parallel to the nodal point of the two generator types. They are energised by an electronic circuit in a pulse width modulated or analogue manner. USE/ADVANTAGE - For combined battery charger etc., with increased precision and reduced noise. Includes overcharge and over discharge protection and r.p.m. display for rotation of wind generator blades.
Patent DE-4133159-A1 (DE)
Title: Spindle nose seating for ISO taper tool shank - consists of fixed ring surface at front and spring-loaded axially displaceable ring surface at rear
Inventor: HOMANN NORBERT
IPC: B23B31/00
Filed: 1991-10-07
Abstract: The internal taper seating to accept an ISO taper tool shank (2) consists of two axially spaced ring surfaces (6, 9) the front one (6) being fixed and the rear one (9) being axially displaceable. The fixed front ring surface (6) is machined in a cover (7) screwed onto the front end of the spindle nose. The rear ring surfaces is machined as a step (9) at the end of a bush (4) which is axially displaceable in the bore of the spindle nose and spaced from it by a preloaded ball bearing cage (5). ADVANTAGE - Tool shank is held in seating without play.
Patent DE-4133757-A1 (DE)
Title: Gas suction and exhaustion equipment - has protruding plate structures forming hinges between tubular arms
Inventor: DEN DEKKER DIRK JAN MARINUS
IPC: B08B15/00
Filed: 1991-10-11
Abstract: The gas-exhaustion equipment comprise two or more tubular arms, the first (1) attached to a bracket (9) at one end and connected to a suction fan, and the second (1') attached to the other end of the first, and with a suction cowl (11) hinging at the other. Thus the arms and cowl hinge in relation to each other and to the bracket in the same vertical plane. All hinges are fixed inside the arms and protrude from their ends, being enclosed by connecting bellows (25-27). The hinges are plate-structures (2,5,2',5') extending between the top and bottom sides of the respective arms and to which they are fixed, part of each protruding beyond the arm end. USE/ADVANTAGE - Gas exhaustion equipment. The hinges can be in similar pairs, so that all arms equipped with them are identical.
Patent DE-4136017-A1 (DE)
Title: Conductive paste using graphite interlaminar cpd. with improved moisture resistance - uses lead chloride combined with more reactive metal chloride as additive, used for mfg. thick film resistors and conductors
Inventor: TODA OSAMU
IPC: H05K1/09
Filed: 1991-10-31
Abstract: The conductive paste consists of an organic binder in which is dispersed a graphite interlaminar cpd. which includes at least PbCl2 as a conductive material. USE/ADVANTAGE - The use of PbCl2, together with another, reactive metal chloride, reduces significantly the resistance increase as a result of exposure to a high temp. and high humidity environment. The resulting increase can be made similar to or less than that of graphite material, while the addition of the guest material decreases the resistivity of the material effectively. The material is used as a filler for paste in the mfr. of thick film resistors and conductors.
Patent DE-4136356-A1 (DE)
Title: Internally threaded parts prodn. - using outer threaded part as pattern to produce thimble-like mould around which melt is cast in induction casting process
IPC: B23P15/00
Filed: 1991-11-05
Abstract: Method of making an internal steep thread consists of using an outer steep thread as the mould piece and electrocoating. After machining the outer thread (1) it is screwed into a flange disc (2) and fitted with a reusable, non-coatable ring (13). The threaded rod is then coated with a high melting material (3) followed by a layer of material (10) similar to that of the back-up melt material. The coating can then be removed from the rod and located inside a casting unit by placing over a mandrel (6) made of non-magnetic material. Its flanged bottom acts as seal with bush (5) to prevent uncontrolled flow of melt (10). The melt is stirred by induction coil (9) to ensure good casting around the threaded thimble-like coating. USE/ADVANTAGE - Esp. for use in pneumatic and hydraulic rotation piston cylinders. The internally threaded piece enables high rotational moments with small dia. pieces.
Patent DE-4136818-A1 (DE)
Title: Pollutant removal process to prevent inhaling - removes pollutants from solder fumes and prevents recirculation, by passing solder fumes through gravity trap
Inventor: DANKESREITER FRANZ
IPC: B01D53/04
Filed: 1991-11-08
Abstract: The solder fumes pas through a gravity trap and are then sucked through a series of different types of filter which remove solid particles larger than 0.001 mm and gaseous substances. A suitable assembly draws fumes through a gravity trap, followed by a dry wadding filter, a steel fleece and a carbon filter. USE/ADVANTAGE - The filters remove pollutants which would otherwise be released back into the atmosphere and inhaled by people
Patent DE-4137989-A1 (DE)
Inventor: SIEDLE HORST
IPC: H01C1/12
Filed: 1991-11-19
Abstract: In the case of a movable collector for potentiometers, adjustable resistors and the like, it is proposed to arrange moving individual wiper fingers, consisting of small round wires, parallel to one another in groups or to a wiper finger carrier, and intervals corresponding approximately to the width of the group, so that wear products and dust can be deposited between the wiper finger groups without interfering with operation. <IMAGE>
Patent DE-4203337-A1 (DE)
Inventor: SCHNEIDER WOLFGANG DR
IPC: B22D11/07
Filed: 1992-02-06
Abstract: In a method for the continuous casting of metals, especially aluminium or aluminium alloys, in a multi-mould casting installation, disturbances in the progress of casting are to be compensated for immediately so that optimum bar quality is obtained. This is achieved, according to the invention, by feeding in a pressurised gas and a lubricant underneath the hot top of each mould via at least one gas line, a regulating valve for setting the volume flow of gas, a downstream pressure sensor and a device for measuring the said volume flow being arranged in each gas line. It is furthermore envisaged, according to the invention, that the volume flow of gas in each gas line be automatically held constant at a predetermined value, irrespective of the respective filling level of the mould, in a first casting phase from the beginning of the filling of the mould with molten metal to a point in time following the entry of the metal strand into the water-cooled zone. During a second casting phase, the volume flow of gas in each gas line is automatically regulated in such a way that the gas pressure in each gas line is held constant at a predetermined value.
Patent DE-4204995-A1 (DE)
Title: Di:isocyanate(s) blocked with 2,5-di:keto-piperazine(s) - used for prodn. of polyurethane powder paints which do not give off epsilon-caprolactam when baked
Inventor: GRAS RAINER DR
IPC: C08G18/10
Filed: 1992-02-19
Abstract: Opt. chain-extended di-isocyanates blocked with 2,5-diketopiperazines are claimed (I), based on di-isocyanats of formula (II) and 2,5-diketopiperazines of formula (III), in amts. of 0.25-1 mole (III) per NCO gp., n = 0-1; R = opt. alkyl-substd. 4-14C (cyclo)alkylene; R' = opt. ester gp.- contg. hydrocarbon residue with mol. wt. 150-2000; R" = H, Me, iso-Pr, iso-Bu or sec.-Bu. Also claimed is a process for the prodn. of (I), by reacting (II) with (III) with equiv. ratio (NCO):(amide NH) = (1-2):(2-1). USE/ADVANTAGE - Used for the prodn. of storage-stable, heat-curable polyurethane (PU) powder paints. Powder paints contg. (I) have all the advantages of prior art PU compsns. (excellent hardness, flexibility, wear resistance, gloss, colour fastness, weather resistance etc.), but do not liberate epsilon-caprolactam (blocking agent-malodour) when baked. In an example, mixt. of 21- pts.wt. 2,2,4(2,4,4)-trimethylhexamethylene diisocyanate and 142 pts.wt. 3,6-dimethyl-2,5-diketopiperazine (obtd. by heating alanine in ethylene glycol at 200 deg.C.) was heated for 2 hrs. at 140 deg.C. to give (I). The prod. had total NCO content, 22%; free NCO, 0.8%; m.pt. 106-113 deg.C; Tg, 69-83 deg.C.. A mixt. of 97.8 pts.wt. (I), 452.2 pts.wt. polyester-polyol (OH no. 55-60; acid no. 3-4; from 10 moles terephthalic acid, 10 moles dimethyl tetrephthalate, 6.25 moles hexane-1,6-diol, 10.5 moles neopentyl glycol, 2 moles 1,4-dimethylolcyclohexane and 2.9 moles trimethylolpropane), 400 pts.wt. TiO2, pigment and 50 pts.wt. flow improver master batch was homogenised in an extruder at 80-120 deg.C., then milled and sieved to below 100 microns. The paint mixt. obtd. was applied to steel plate by electrostatic spray coating at 60 kV and then stoved. The 50-60 micron coating obtd. by stoving for 10 minutes, at 200 deg.C. had Konig hardness, 159 second; Buchholz hardness, 100; Erichsen depth, above 10mm; cross-cut test rating, 0; reverse impact strength, above 944.64 g.m; gloss (60 deg.), 63. Similar results were obtd. by stoving for 30 minutes at 160 deg.C..
Patent DE-4206451-A1 (DE)
Inventor: RICHTER KLAUS DIPL ING
IPC: A62C2/22
Filed: 1992-02-26
Abstract: The invention relates to a closing device for sealing an opening (2) in the event of a perturbation by means of a movable sealing element (5, 8), for example a fire-protection seal. A conveyor path (3) for transporting bulk and/or piece goods, which is deactivated in the event of fire, is guided through the opening. A clearing device is provided, comprising a clearing element (10, 11, 12) which is movable through the opening, which in its trouble-free state is kept out of the reach of the transported goods and which, in the event of a fire, engages the transported goods on the conveyor prior to sealing the opening and moves the goods out of the operating area of the sealing element. <IMAGE>
Patent DE-4208276-A1 (DE)
Inventor: MONTGOMERY GARY V
IPC: B29C49/06
Filed: 1992-03-13
Abstract: A method and apparatus for selectively fusing a coating of dissimilar material to the inside or outside of a closed end cylindrical part or portion thereof such as a standard threaded container cap (30). This system utilizes a standard die set (12) in an injection molding machine, and the coating apparatus (16) advances a film of dissimilar material between the core (20) and cavity portion (18) of the die set (12) in their open position. The portion of the film used in the coating is cut from the film (28) before the film is advanced at the beginning of the next molding cycle. <IMAGE>
Patent DE-4208429-A1 (DE)
Inventor: MAERKL HERBERT PROF DR ING
IPC: C12M1/12
Filed: 1992-03-17
Abstract: The invention concerns a method of producing high cell densities in a reactor, wherein the culture of micro-organisms, or plant or animal cells, is supplied with nutrient and the influence of growth-inhibiting substances is reduced. In one embodiment of the process, two chambers are present in the reactor and are separated by at least one membrane. A highly concentrated solution of nutrients is fed into the chamber containing the culture, while a salive solution without any nutrients is fed into at least the other chamber to facilitate osmotic balancing through the membrane. In a further variant of the method, the growth-inhibiting metabolic products are bound to an adsorbent resin added directly into the reactor and thereby neutralized. After fermentation, a separation device is used to separate the adsorbent resin from the micro-organisms produced.
Patent DE-4210880-A1 (DE)
Title: Heating block for semiconductor chip wire bonding machine - has inner heating stage and chip heating stage at two different temps.
Inventor: AHN TAE KWI
IPC: H01L21/52
Filed: 1992-04-02
Abstract: The heating block has an inner heating stage (12), for bonding one end of each wire with each inner conductor of a lead frame. A chip heating stage (13) bonds the opposite ends of the wires to a semiconductor chip. The inner heating stage is heated to a higher temp. than the chip heating stage. Pref. a differential heating device (30) has an opening (16) in the centre of the inner heating stage into which the chip heating stage is fitted. The latter is made of a material with a lower thermal conductivity than the heating block (10) for the inner heating stage. ADVANTAGE - Prevents damage to semiconductor chip during bonding.
Patent DE-4213732-A1 (DE)
Title: Closure for pressurised duct in pneumatic component - has clamping sleeve with radially adjustable sprung arm with external, pointed fixture edge
Inventor: MEIER ROLF DIPL ING
IPC: F16L55/136
Filed: 1992-04-25
Abstract: The closure seals bores or ducts carrying a pressure medium inside a housing, particularly for use with pneumatic components. The closure has a sealing ring locating in an annular groove, and a restriction at an axial spacing from the seal. The annular groove (23) has a seal guide (13) and a clamping sleeve (15) which moves axially to it. The clamping sleeve has a sprung arm (29) on the side away from the sealing ring (14). The arm is radially adjustable via an internal tensioning cone (17) and bolt (16) located centrally in the guide body. The arm has a radially externally pointed edge (31). ADVANTAGE - Guaranteed seal easily achieved with coarse bore tolerances, and without need for special tools.
Patent DE-4215236-A1 (DE)
Title: Antitheft device for detachable load on goods vehicle - uses two=part body rotatable in socket and held by security bolt
Inventor: SCHNEIDER THOMAS
IPC: E05B83/02
Filed: 1992-05-09
Abstract: The device is fitted to interchangeable superstructures and containers on goods vehicles. It is used where the structure to be secured has hollow open socket areas on the base section to accommodate centring and fastening pegs. A two-part body (8) is introduced into the socket (1) via an opening (4) and is rotatable within the socket. In the rotated state the body is held fast by a security bolt (13), and a further, downwardly projecting bolt (11) has a tapered end section (12). USE/ADVANTAGE - Antitheft device for detachable load effectively prevents the unauthorised removal of goods vehicle loads.
Patent DE-4217911-A1 (DE)
Title: Receiver end digital signal timing recovery - providing timing recovery for constant bit rate digital signals after cell structure async. transmission
Inventor: ASMUS ULF
IPC: H04Q11/04
Filed: 1992-05-30
Abstract: Digital signals are transmitted at a constant bit rate with different length pauses between individual cells with a cell memory in a demultiplexer and a cell trigger and timing output when the FIFO output memory is full. First, in the memory holding a larger number of cells, cells are read in up to half its capacity. When it is half full, the cell triggers cause the data to be extracted. It is then tested and, if necessary, corrected. They are read into the FIFO memory, cell-wise, with the network byte rate. They are then read out again at a fraction of this frequency. Simultaneously, the full state of the FIFO is detected and a full signal is generated. This controls the ratio of data bytes to be output to insignificant bytes. USE/ADVANTAGE - Esp. for high rate video signals. Provides good quality signals without jitter.
Patent DE-4218382-A1 (DE)
Title: Optical profilometer for surface roughness measurement with adaptive inclination adjustment and new type of detection system - has control system maintaining beam perpendicular to measurement surface, uses interferometric heterodyne detection
IPC: G01B11/30
Filed: 1992-06-04
Abstract: The profilometer has a control system which maintains a sensing beam perpendicular to a measurement surface . A controlled adjustment element causes a lateral displacement of the beam in an aperture (EP) as the matched transverse displacement is determined by comparing the spot position on two position sensitive detectors (PSD1,PSD2). Interferometric heterodyne detection is used. A reference beam carries one mode of a laser and an object beam the orthogonal mode. Both modes are guided to separate photosensitive diodes which produce the transverse displacement control signals. USE/ADVANTAGE - For measuring micro structures and roughness in surface measurement technology with minimal vignetting effects.
Patent DE-4220571-A1 (DE)
Title: Fault current circuit breaker - has trip current level characteristic evaluated to identify optimum response period.
Inventor: MOESSNER GERHARD
IPC: H02H3/33
Filed: 1992-06-24
Abstract: The circuit breaker is designed to characteristic data that defines the max. allowable response time. The specified standard requires the leakage current trip to limit at a min. rating of 30 mA to be 200 msec, and at 60 mA to be 170-180 msec. At the max. trip level of 150 mA, the max. response time is 50 msec. By interpolating the characteristic an optimum limit of 90-100 mA is identified that simplifies the design specification. The minimum response time at a mains frequency of 50 Hz is greater than 8 ms. ADVANTAGE - Allows most favourable response delay to be used for design purposes.