baber/WOPTO huggingface dataset:
Patent DE-3817503-A1 (DE)
Title: Process and device for the functional monitoring of filter plants
IPC: B01D46/44
Filed: 1988-05-24
Abstract: Via a by-pass, a part-stream quantity is taken off from the main exhaust gas volume stream from the pressure pipe of the fan or blower of the filter plant to be monitored and passed through a control filter apparatus whose resistance to flow is monitored. The part-stream quantity is sucked in by the fan or blower of the filter plant to be monitored itself and returned to the main exhaust gas volume stream. The control filter apparatus is equipped with a suitable filter medium and/or metal screen. The resistance to flow of the control filter apparatus is low when the filter plant is working faultlessly, since the residual dust concentration in the exhaust gas is very low and the granulation is extremely fine. In contrast, when the filter function is faulty (e.g. owing to defective filter elements), the residual dust content in the exhaust gas markedly increases, considerably larger dust particles also occurring at the same time. This leads to a variable increase of the resistance to flow of the control filter apparatus and signals the faulty function of the filter plant to be monitored.
Patent DE-3827534-A1 (DE)
Inventor: WUEST WILLI DR
IPC: C07H15/04
Filed: 1988-08-13
Abstract: PCT No. PCT/EP89/00923 Sec. 371 Date May 13, 1991 Sec. 102(e) Date May 13, 1991 PCT Filed Aug. 4, 1989 PCT Pub. No. WO90/01489 PCT Pub. Date Feb. 22, 1990.Surface active alkylglucosides are prepared in a 2-step process from starch or starch degradation products such as polyglucose or glucose syrup, the first step consisting of reaction with a short chained alcohol, particularly butanol, while the second step comprises transacetalization with the longer chained C8-22, more particularly C12-18, alcohol, with fatty alcohols of natural origin preferably being used.
Patent DE-3831787-A1 (DE)
Title: Adhesion bonding method
Inventor: PASCAL ROGER
IPC: B29C65/42
Filed: 1988-09-19
Abstract: Method of bonding two elements, in which the adhesion element used is an adhesive heated by a heating element which in turn is formed by a conductive resistance element incorporated into the adhesion element. The conductive element may be a metal wire, for example of copper, steel or constantan, and may have the form of a lattice or of essentially parallel wires or fibres. The conducting element is supplied with electrical current.
Patent DE-3832997-A1 (DE)
Title: Installation for harnessing energy by means of a plurality of wind wheels
Inventor: BECKER WALTER ING GRAD
IPC: F03D3/02
Filed: 1988-09-29
Abstract: As a novel energy source, drum-shaped wind wheels (6) are arranged along a street (1) in the draught produced by the motor vehicles. On bridges having a continuous draught, the wind wheels are instead arranged below the bridge. <IMAGE>
Patent DE-3836040-A1 (DE)
Inventor: AHRENS UWE DIPL ING
IPC: A61F2/36
Filed: 1988-10-19
Abstract: Process for manufacturing a shaft prosthesis with grooves, in which the milling tracks for the grooves in each case extend in planes which intersect in a common centre axis, the tips of the milling tracks, which are of wedge-shaped cross-section, point towards this centre axis, and the number of the milling tracks allocated to an angular range with an apex on the centre axis increases as the distance of the surface from the centre axis increases, the milling tracks extending closely alongside one another, and the milling is carried out using a wedge-shaped milling device starting from a prosthesis blank with complete surface removal, and a prosthesis manufactured in accordance with such a process. 
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Patent DE-3836673-A1 (DE)
Title: Method and arrangement for reducing the induced drag of a wing
Inventor: HARRIEHAUSEN MICHAEL
IPC: B64C21/02
Filed: 1988-10-28
Abstract: In order to reduce the induced drag of a wing over which flow passes it is provided that an element (3') of the lateral flow (3) is deflected at the end (2) of the wing through a gap on the underneath of the wing (1) into a guide duct (6). In this guide duct (6), the element of the lateral flow (3) is diverted at its outlet (8) on the underneath of the wing (1) such that it is directed downwards, so that a rotational impulse is produced which opposes the normal vortex. <IMAGE>
Patent DE-3838478-A1 (DE)
Title: Electrical contact
Inventor: OLON THOMAS E
IPC: H01R13/03
Filed: 1988-11-12
Abstract: The invention relates to an electrical contact having improved abrasion behaviour and thermal characteristics. This electrical contact consists of a conductive base material in order to provide the required mechanical strength at the temperatures in question. A layer of gold is applied onto this base material in such a way that at least a part of the gold diffuses into the underlying base material.
Patent DE-3840824-A1 (DE)
Title: Self-commutating converter circuit and method for operating it
Inventor: KAHLEN HANS PROF DR ING
IPC: H03K17/00
Filed: 1988-12-03
Abstract: In the case of this self-commutating converter circuit which can be used for DC converters and AC converters, it is proposed to make use of two identically constructed parallel semiconductor branches, consisting in each case of at least one semiconductor component (T1, T2, T3, T4) which can be switched off and at least one diode (D1, D2, D3, D4), the connection point of the semiconductor components with the diodes forming the load terminals and being connected to each other via a load-reduction discharge capacitor (C). The semiconductor components (T1, T2, T3, T4) of the two semiconductor branches are switched on together but switched off sequentially, so that the energy stored in the load-reduction discharge capacitor (C) flows into the load circuit when the first semiconductor component is switched off. This provides an almost loss-free load-reducing discharge network for power converter circuits having valves designed for peak surge current. <IMAGE>
Patent DE-3843574-A1 (DE)
Title: Process and apparatus for producing a waterproof membrane with preferably two supporting liners
Inventor: MARZOUKI TAIEB
IPC: D06N5/00
Filed: 1988-12-23
Abstract: Waterproof membranes (10) with two supporting liners (11, 12) can only be produced unproblematically with an adequately thick central bitumen layer (15) over the full surface area. In many cases only inadequate impregnation of one or the other supporting liner (11, 12) takes place, at least to some extent, as a result of which there is the risk of a supporting liner (11, 12) becoming detached from the waterproof membrane (10). The intention of the invention is to avoid this while maintaining an efficient production process. As far as the process is concerned, the waterproof membrane (10) according to the invention is formed by the two supporting liners (11, 12) being coated one after the other with bitumen or the like. An apparatus for carrying out this process has for this purpose two successive belt loops (19, 20). Accordingly, first of all a coating on both sides of the one supporting liner (11) is performed, before the second supporting liner (12) is then applied and subsequently at least the still free edge side (36) of the same is coated with bitumen. The invention is particularly suitable for producing rollable bitumen waterproof membranes for flat roofs or the like. <IMAGE>
Patent DE-3844286-A1 (DE)
Inventor: KULL HERMANN DIPL ING DR
IPC: F02D41/22
Filed: 1988-12-30
Abstract: A control system acts on a vehicle engine to allow limited, controlled, travel after a malfunction such as the accelerator sticking. If a fault is detected, the engine speed is maintained constant at its pre-fault level for a predetermined time (to prevent changes due to transients) then reduced to a predetermined safety level. This action may be taken only if the accelerator is in the "idle" position or if the brakes are applied, indicative of the driver noticing that something is amiss. In a variant (Fig 4, 5) two safety levels are used, the level being determined on the basis of brake and accelerator positions, these also determining the rate of change of engine speed.
Patent DE-3902244-A1 (DE)
Title: Device for the chipless cutting-off of annular parts from a tube
Inventor: SCHUMACHER DIETER
IPC: B23D21/00
Filed: 1989-01-26
Abstract: The device comprises three at least indirectly driven supporting rollers 4-6 which are mounted in a stationary position in a machine housing 1. The supporting rollers 4-6 serve as abutments for tubes 2, 3 to be cut to length. The cutting-to-length is carried out by a disc-shaped cutting blade 10 which is pressed against the tubes 2, 3 by a hydraulic cylinder 14. When pressed against the tubes 2, 3, the cutting blade 10 mounted in a driveless manner in a swivel arm 11 takes on the rotational speed of the tubes 2, 3 and severs them. The position of the tubes 2, 3 on the supporting rollers 4-6 is maintained by a pressure roller 16. <IMAGE>
Patent DE-3903112-A1 (DE)
Title: Water heater
Inventor: GARBE HANS-JOSEF
IPC: F24H9/00
Filed: 1989-02-02
Abstract: In a water heater, the water level indicator is to be improved. For this purpose, a shaft (15) is formed between a plane transparent pane (7), inserted into the wall (3) of the container, and a pressure plate (11). Located in this shaft is a bar (16) acting as a float, the length of which is slightly shorter than the clear distance between lateral limbs (9, 10) of the pressure plate (11) and the diameter of which is slightly smaller than the clear distance between the pressure plate (11) and the transparent pane (7). <IMAGE>
Patent DE-3908221-A1 (DE)
Title: Hoof-shoeing support
Inventor: MARKEFKE HEINZ
IPC: A01L11/00
Filed: 1989-03-14
Abstract: Manufactured and welded in a tubular construction according to Figure 1. Sharp edges on the support foot are provided with rubber sleeves and slipping is as a result made more difficult. The support stand is provided with a plastic head. Manufactured dismantlably into parts 1, 2 and 3 in a tubular construction according to Figure 2. The clamping lever with dimension 116 is held rotatably by a 6 mm diameter U-bow which is welded onto part 1. Furthermore, the clamping lever is provided with a cam, according to section A-A, which holds the clamping connection stably. If the clamping connection is released, part 1 and part 2 can be released by turning part 1. The support stand part 3 can be unscrewed from the support foot by the screw connection; the hoof-shoeing support can consequently be dismantled to form a bundle. By means of the construction according to Figure 2, it is made possible for the rider or driver to carry the hoof-shoeing support along. The hoof-shoeing support serves for working hooves of all hooved animals and for the farrier for shoeing horses. The hoof-shoeing support guarantees the farrier free working on the hoof and safety in the workplace. <IMAGE>
Patent DE-3910148-A1 (DE)
Title: Method for testing a porous protective layer of an oxygen sensor
Inventor: SHIMURA TOMOAKI
IPC: G01N27/407
Filed: 1989-03-29
Abstract: The quality of a porous protective layer of an oxygen sensor can be tested and assessed directly, without difficulty, promptly and accurately, without destroying the oxygen sensor, by means of a method for testing a porous protective layer of an oxygen sensor which comprises a solid-electrolyte body, an outer electrode and an inner electrode which is in intimate contact with the solid-electrolyte body. The method is characterised in that the external atmosphere of the porous protective layer which covers the outer electrode is kept in an oxygen-excess or an oxygen-deficient state and a voltage or a current is applied to the outer electrode and the inner electrode, through the solid-electrolyte body, in order to measure a value of an electric diffusion-controlled limiting current to assess a gas permeability of the porous protective layer. The method can also be used for checking or testing the production process of the oxygen sensor.
Patent DE-3910414-A1 (DE)
Title: Compressor for refrigerating/deep-freezing appliances or plants
Inventor: FUCHS WERNER
IPC: F04B39/12
Filed: 1989-03-31
Abstract: The invention relates to an oil-lubricated compressor for refrigerating/deep-freezing appliances or plants. For the simplified disposal of the waste oil, it is proposed to provide at the lowest point of the compressor housing (1) an outlet for the waste oil situated in the compressor housing (1). The outlet can be constructed, for example, as a pipe (5) which starts at the lowest point of the compressor housing (1) and ends outside the compressor housing (1). <IMAGE>
Patent DE-3913044-A1 (DE)
Title: Clarifying waste waters contg. inorganic sAlts, dyes etc. - by mixing with lime, allowing reaction time and adding waste water contg. organic material to cause flocculation
Inventor: PFEFFERKORN HERBERT
IPC: C02F1/52
Filed: 1989-04-20
Abstract: Process for clarifying waste water by a pptn. reaction comprises mixing the waste water with lime in an amt. of at least 0.1 kg/m3 waste water, allowing a reaction time of at least 0.1 and then adding water contg. organic material esp. a faecal waste water, to cause flock formation and pptn. of the content substances of the waste water. USE/ADVANTAGE - Process gives good clarification of waste water contg. inorganic salts, (in)organic phosphates, dyes, heavy metals, and organic materials, e.g. agricultural and domestic sewage water, effluents, from the paper, food, brewing, and petrochemical industries. etc.
Patent DE-3914296-A1 (DE)
Title: Aluminium nitride powder and a process for the preparation thereof
Inventor: PETERS DIETER DIPL CHEM DR
IPC: C01B21/072
Filed: 1989-04-29
Abstract: An aluminium nitride powder has a crystallite size, determined by powder diffraction and evaluated by the method of Scherrer, of from 40 to 150 nm, a primary particle size of from 0.1 to 0.5  mu m, a BET specific surface area of from 5 to 50 m<2>/g and a degree of whiteness, measured using light of a wavelength of from 400 to 700 nm against barium sulphate AR as whiteness standard, of more than 91 %. To prepare this aluminium nitride powder, metallic aluminium is first melted together with monoammine aluminium chloride [AlCl3(NH3)] in an inert gas atmosphere at temperatures above 125@C and these are allowed to react with one another with evolution of hydrogen. From 8 to 20 g of ammonia per hour per mole of monoammine aluminium chloride are then passed into the aluminium-containing monoammine aluminium chloride melt at temperatures between 250 and 400@C to precipitate aluminium nitride as solid until the aluminium is completely reacted. Finally, the temperature of the melt is raised to above 400@C.
Patent DE-3920090-A1 (DE)
Inventor: MAISCH WOLFGANG DIPL ING DR
IPC: B60T8/42
Filed: 1989-06-20
Abstract: The invention relates to a device for regulating the pressure in a hydraulic anti-locking system of a vehicle braking system. According to the invention, choke connecting lines (11a, 11b, 12a, 12b) with hydraulic chokes (13a, 13b, 14a, 14b) are arranged between the brake pressure lines to and from the control valves (6) in order to divert part of the brake fluid returned by the return force pump (9) towards the wheel brake cylinders (5) and keep it from the brake master cylinder (3) intake. This suppresses the pulsating movement transferred to the pedal (10) connected to the brake master cylinder (3) when the brake fluid is returned while still safeguarding the effectiveness of the braking system.
Patent DE-3921735-A1 (DE)
Title: Vane cell pump with several pressure connections - incorporates system for altering size of vane cells
Inventor: KLAUS WOLFGANG
IPC: F04C15/06
Filed: 1989-07-01
Abstract: The vane cell pump has several pressure or suction connections. The pump incorporates a rotor which is circular in cross-section and rotatable about a central point in a housing. A pressure connection (10,10') opens into a chamber (9') of the cavity (6,6') which through rotor movement reduces and/or opens a further suction connection in a chamber of the cavity. USE/ADVANTAGE - Vane cell pump requiring only a small installation space which can supply circuits with liq. or gaseous media at pressure or negative pressure.
Patent DE-3923232-A1 (DE)
Title: Polyphenylene ether(s) prodn. by oxidative coupling of phenol(s) - in presence of catalyst comprising copper salt and substd. pyridine, tert.-butylamine, piperidine, pyrrolidine or piperazine
Inventor: HEDTMANN-REIN CAROLA DR
IPC: C08G65/44
Filed: 1989-07-14
Abstract: Process is for prodn. of high-mol. wt. polyphenylene ethers. (I) from monohydric phenols with alkyl or aryl substits.  in the 2 ortho positions or also in one meta position but not in the para position (II), by oxidative coupling with oxygen at 20-60 deg.C in the presence of a complex catalyst consisting of a Cu salt and an organic amine (III), in a 6-10C aromatic hydrocarbon solvent, and working up the polycondensate soln. obtd.; the novelty is that (III) is an amine of formula (I)-(V) (where R1-R6 = (1-(r-methylpiperidinyl) or Ph-CH2CH2CH2-; R2 = 1-2C alkyl; R3, R4, R5, R6 = H or 1-4C alkyl). Pref.  (III) is piperazine or N,N'-dimethylpiperazine. USE/ADVANTAGE - (I) are used for prodn. of moulded components.  The process enables the prodn. of high-mol. wt. (I) in a relatively short reaction time (w.r.t. prior-art processes), with smaller amts. of coloured by-prods., etc..
Patent DE-3925302-A1 (DE)
Title: Fastening system for shelf bases - has console with three lugs for extra secure fixing
Inventor: HEINRICH WILHELM
IPC: A47B57/42
Filed: 1989-07-31
Abstract: The fastening system for shelf bases comprises supports (21) with slit holes, and console brackets (20) with lugs (3,4) which  engage in the supports. One of the two lugs has a rear bearing edge (5b) and projects up over the support edge (1) of the console. The consoles have a third lug (6) which projects over the front bearing edge (2a,2b,2c). The uppermost of the three lugs and the support (7) pref each have a slit with at least one inclined bearing edge wherein the inclined bearing edges run parallel to each other and include an angle between 0 and 90 deg with the inner and outer bearing edges. USE/ADVANTAGE - Fastening system for shelf bases with greater versatility and greater stability since the upper part of the upper lug adjoins at least partially the inside of the support.
Patent DE-3927889-A1 (DE)
Title: Disc positioning equipment for juke box - uses scanner to locate start and end of reference marks to determine centre of mark in conjunction with 2nd scanner and control circuitry
Inventor: BAAS DIETER
IPC: G05D3/14
Filed: 1989-08-24
Abstract: A magazine (MZ) has position reference marks (MR) on the front surface. The positioning device (AS) is driven by a motor  via a spindle/shaft (SP), and includes scanner, transmitter and receiver (S,E). The scanner (S,E) detects the start and end position of the reference mark (MR) allowing the width of the mark (MR) to be determined. The device (AS) can then be positioned in the centre of the mark (MR) by moving half of the calculated width from either the start or end position. Pref., the mark (MR) is indicated by an impulse signal with the rising/falling edges indicating the start/end of mark respectively. The motor can be controlled by a circuit (ST) utilising impulse counting circuitry. USE/ADVANTAGE - Record charging equipment; scanner can be mechanical (inductive/capacitive or mechanical).
Patent DE-3938953-A1 (DE)
Inventor: SEULBERGER HARALD
IPC: C07K14/705
Filed: 1989-11-24
Abstract: The invention relates to a membrane protein with two immunoglobulin-like fields which (a) has the amino acid sequence visible in fig. 3D; (b) has a naturally occurring allelic variation of this amino acid sequence; (c) has a sequence homologous thereto which corresponds to a protein with essentially the same biological activity and functions; and a recombinant DNA coding for the protein of the invention, process for producing it and its use as a medicament.
Patent DE-4004391-A1 (DE)
Title: Hot water system with more than one circuit - has common control which activates pump only in circuit where there is lesser heat demand
Inventor: SCHEID KLAUS
IPC: F24D19/00
Filed: 1990-02-13
Abstract: The hot water system includes a boiler in an indirect heating circuit connected to the flow is also directly coupled to a mixer valve for the purpose of temperature control.  Pipework links thermostats, circulating pumps and the mixing valve to a common control. The control (4) activates intermittently, to different heat requirements of the various heating circuits, the circulation pump in the circuit in which there is a lesser heat requirement. USE/ADVANTAGE - Domestic hot water system.  Avoids loss of energy due to the unnecessary operation of the pump.
Patent DE-4006038-A1 (DE)
Title: Rack for road vehicle steering gear - has hollow basic body with toothed section on part of outer wall
Inventor: BOEGEL HELMUT
IPC: F16H55/26
Filed: 1990-02-26
Abstract: The basic body of the rack is a one-piece hollow part (10') made from multi-layer tube material, and the teeth (14') are formed from a specific wall area of it. The hollow part has a reinforced wall thickness in the area of the teeth, and it is from this thickened wall that the teeth are formed. In an alternative form, the hollow part can be made of single layer tube material, pref. steel. It is produced by the application of high pressure internally, and then the teeth are formed by a stagger press process. USE/ADVANTAGE - As a steering gear rack for a motor vehicle, which has high strength, and low ability to transmit vibration to the vehicle wheels.
Patent DE-4006338-A1 (DE)
Title: Swash plate compressor for refrigeration system - incorporates oil-refrigerant separator chamber
Inventor: KAWAI KATSUNORI
IPC: F04B27/08
Filed: 1990-03-01
Abstract: The swashplate compressor has a lubricating oil reserve in the lower part of the swash plate chamber (7) and in the oil sump (8) on the floor of the compressor housing (1,2). A refrigerant/lubricant separating chamber (25) is provided to separate oil picked up by the gaseous refrigerant as the refrigerant leaves the swash plate chamber via a channel (27).
Patent DE-4006569-A1 (DE)
Title: Multiplier circuit for digitally coded numbers - has part stages coupled to shift register generating outputs
Inventor: MERKLE PAUL
IPC: G06F7/52
Filed: 1990-03-02
Abstract: A digital multiplier system operates on numbers in 52 code and has a main matrix multiplier circuit (1) that combines with adder circuits (2,3). Carry propagation is handled by a number of coupled adder stages (4) and all units provide outputs to a shift register (5b). The shift register provides for parallel inputs and effects a shift to the right data to generate a multibit  output. A controller unit provides operation of the  stages and includes a programmable counter. ADVANTAGE - Efficient part product addition.
Patent DE-4007833-A1 (DE)
Title: Bracket type support rail for shelving - consists of support rail with upper and lower arm and sloping part
Inventor: HUGLE REINHARD
IPC: A47B96/06
Filed: 1990-03-12
Abstract: The bracket-type support-rail (1) for shelves (2) is made of one piece of metal or strong plastic. The support-rail (1) has a lower (4) and upper (5) arm and is shaped so that the shelves (2) can be easily slid in without damage. The opening through which the shelves are inserted is made up of the difference (b) between the upper (4) and lower (5) arm formed by a slope (6) on the lower arm (5). USE/ADVANTAGE - The support-rail, especially for self-assembly, is in one piece, with profiled sections.
Patent DE-4013403-A1 (DE)
IPC: G01L9/00
Filed: 1990-04-26
Abstract: A device (1) for detecting inner pressure conditions in flexible ducts (5) has a fixed plate (6) and a movable plate (7) between which the duct (5) is pre-stressed. The inner pressure conditions are transmitted by the movable plate (7), if necessary by a tappet (8), to a pressure sensor (2). This device (1) is highly sensitive and allows inner pressure conditions to be directly measured from outside without any accessory implements.