baber/WOPTO huggingface dataset:
Patent DE-3425195-A1 (DE)
Title: Device for the production of screwdriver blades
Inventor: SCHLEIFENHEIMER MANFRED
IPC: B21K5/00
Filed: 1984-07-09
Abstract: The invention relates to a device for the production of the rectangular profile of the operative location on screwdriver blades by hammering on hammering machines. The aim of the invention is to make the cold hammering process, which is advantageous in terms of production technology, usable for profiles which do not lie centrally with respect to the centre line of the shank of the screwing tool, in particular for the rectangular profile of the operative location on screwdriver blades. The object on which the invention is based is to develop a device in which complete, regular and symmetric formation of the profile on the worked operative location of the screwdriver is achieved using two pairs of hammering jaws. The solution to the object consists essentially in that the working stroke of one of the pairs of hammering jaws is smaller than the working stroke of the other pair of hammering jaws. <IMAGE>
Patent DE-3425936-A1 (DE)
Title: Circuit arrangement for generating high-frequency oscillations
Inventor: ALTENDORF HANS-WALTER DIPL ING
IPC: A61C17/20
Filed: 1984-07-13
Abstract: The invention relates to a circuit arrangement for generating high-frequency oscillations, preferably in the ultrasonic range, using a single transformer, the secondary side of which operates a preferably piezoceramic resonator (2) as resonance circuit and the primary circuit of which exhibits a circuit (3) comprising a switching element (4) which feeds the high-frequency power with the resonant frequency of the resonant circuit into the transformer (1), and with a comparator (8) which detects the voltage zero crossings at the switching element (4) in the high-impedance state. To avoid disturbances at the comparator (8) during the switching, it is proposed to branch off the signal to the comparator (8) via a capacitor from the secondary circuit of the transformer (1) and subsequently to "clamp" this floating signal. <IMAGE>
Patent DE-3428189-A1 (DE)
Title: Control method and control device for controlling an asynchronous machine which is supplied via a converter having an intermediate circuit
Inventor: ABRAHAM LUDWIG DR ING
IPC: H02P21/06
Filed: 1984-07-31
Abstract: In the case of this control method and of this control device for controlling an asynchronous machine (29, 37) which is supplied via a converter having an intermediate circuit (26, 27, 28, 36, 38, 39), a decoupling network is provided to which, on the input side, desired values for the rotor flux ( omega 2d*) and for the torque (m*) as well as the detected rotation frequency ( omega ) of the asynchronous machine are supplied, and which, on the output side, emits desired-value components for the stator current (i1d*, i1q*) and the stator voltage (U1d*, U1q*) of a rotor-flux-related coordinate system, as well as the slip frequency ( omega 2*). In order to calculate these output variables, machine constants (for example the main flux ( omega h), the stator resistance (R1) and the rotor time constant (T2)) are entered into the decoupling network. Since the rotor time constant (T2) changes during operation as a function of the heating, the rotor time constant is automatically tracked during operation, with the aid of a power control loop. The desired value of the stator power (P1*) is formed for this purpose. The intermediate circuit power, reduced by the invertor power loss (PV) for example, is used as the actual value for the stator power (P1). The control deviation between the stator voltage power variables (P1, P1*) is supplied to a power controller (44) whose control variable corrects the rotor time constant (T2). <IMAGE>
Patent DE-3428848-A1 (DE)
Inventor: SUNG ERIC DR
IPC: C11D3/30
Filed: 1984-08-04
Abstract: The agents are suitable for use at low temperatures and are based on polymeric alkali metal phosphates and/or their substitutes, alkali metal silicates, alkali metal carbonates and, where appropriate, compounds which release active oxygen, and low-foam non-ionic surfactants. They contain enzymes and primary C8-C18-alkylamines which can, where appropriate, be alkoxylated or quaternised.
Patent DE-3430718-A1 (DE)
Title: Protective helmet
Inventor: JESSL PETER DIPL ING
IPC: A42B3/04
Filed: 1984-08-21
Abstract: A protective helmet having an actively illuminating outer surface is described. For this purpose, light-emitting parts of optical fibres are guided along the outer surface of the helmet in accordance with a given pattern.
Patent DE-3432054-A1 (DE)
Title: Intercom system
Inventor: HERING HANS T DIPL ING
IPC: H04M9/08
Filed: 1984-08-31
Abstract: An intercom system has a central station (Z) and at least a first and a second telephone station (SP1, SP2) with hands-free facilities. Each telephone station contains a constant-voltage unit (KSE) disposed in series with a hybrid circuit (GS) to which a through-connect key (T) is assigned. The constant-voltage unit (KSE) is connected via a first arm of a rectifier bridge (GB), polarised in the forward direction, to a first wire (a), and the hybrid circuit (GS) is connected via a second arm of the rectifier bridge (GB), polarised in the backward direction, to a second wire (b) of a two-wire connection line (L). Furthermore, the second wire (b) is connected via a diode (D), connected in the forward direction, to the positive pole of a voltage supply of a microphone (M) of the telephone station (SP1, SP2). An evaluation and changeover unit (AUE) of the central station (Z) which is routed via the two-wire connection line (L) to the telephone stations (SP1, SP2), on detecting the actuation of the through-connect key (T) in the first telephone station (SP1), effects a loop polarity reversal and associated muting of the microphone (M) of the second telephone station (SP2). <IMAGE>
Patent DE-3432586-A1 (DE)
Title: Rotor-type prime mover
Inventor: BUHMANN FRIEDRICH
IPC: F01C1/20
Filed: 1984-09-05
Abstract: The rotor-type prime mover is a very significant improvement as regards efficiency of machines for energy conversion than was hitherto possible with piston and turbine machines because the rotor-type prime mover consists of significantly fewer components, has a lower energy loss and functions without uneconomical mass acceleration of oscillating pistons and connecting rods. It is as it were a reinvention of the wheel because it operates with two or more rotors running one inside the other without pistons and connecting rods and can achieve high utilisation of the primary energy which is input. It to a large extent replaces all previous designs of steam turbines, steam engines, pumps, compressors and engines of the Otto, diesel, Wankel and Stelzer types and some water turbines.
Patent DE-3438735-A1 (DE)
Title: Process for producing chipboards or fibreboards
Inventor: OSTERLOFF EBERHARD DIPL ING
IPC: B27N3/00
Filed: 1984-10-23
Abstract: The invention relates to a process for producing chipboards or fibreboards, in which there are added to at least one component of the materials or starting substances used for producing the chipboards and/or fibreboards, preferably to the organic-chemical binders or to the glue liquor containing the binder, specific quantities by weight of a liquid concentrate consisting of specific parts by weight of boric acid and a water-soluble compound or a water-soluble compound mixture, which compound or which compound mixture contains at least one alcohol, preferably a primary alcohol and at least one water-soluble aliphatic amine or polyamine and/or an alkoxyamine or an alkanolamine, water also being added if appropriate, said composition being mixed together in a manner known per se and subsequently compression moulded using a specific pressure and a specific temperature. The invention furthermore relates to the use of the liquid concentrate as an additive for organic-chemical binders or glue liquor containing the binder for the production of chipboards or fibreboards.
Patent DE-3439006-A1 (DE)
Title: Magnetic card reading and writing system
Inventor: EDER HERBERT DIPL ING
IPC: G06K7/016
Filed: 1984-10-25
Abstract: A magnetic card reading and writing system, consisting of a magnetic card having a strip which can be magnetised, and of a housing and at least one magnetic head which is arranged in the housing in such a manner that, in the condition when the magnetic card is located in the housing, the strip which can be magnetised is scanned by the magnetic head and, at the same time, a reference-pulse sequence, which is produced on a reference track, is evaluated to compensate for different scanning rates. The strip (2), which can be magnetised, on the magnetic card (1) has at least two magnetic tracks (3, 4), of which one forms the reference track (4), and at least one reference magnetic head in the housing is allocated to the magnetised reference track (4). <IMAGE>
Patent DE-3442786-A1 (DE)
Title: Brake master cylinder for dual circuit brake systems
Inventor: GILLES LEO
IPC: B60T11/20
Filed: 1984-11-23
Abstract: In a brake master cylinder for dual circuit brake systems a primary piston (12) and a secondary piston (14) are arranged in a cylinder housing (10). A pressure chamber (30, 42) and an expansion chamber (24, 34) are assigned to each of the pistons (12, 14), each pressure chamber (30, 42) being connectable by way of a duct (32, 48; 50, 36) to a brake fluid reservoir. So that a feed pressure is obtained in the rest position in at least one pressure chamber (42) and one brake line connected to this and leading to a wheel brake cylinder, and so that no idle travel of the piston (14) assigned to this pressure chamber (42) occurs during operation of the brake, the duct (50) of this pressure chamber (42) is closed in the rest position. The feed pressure can be predetermined by the difference of the spring forces of a primary spring (78) and a secondary spring (80), which determine the rest position of the piston (12, 14). The duct (50) can be kept open for vacuum bleeding of the brake system by means of a support (68) displaceable into two operating positions. 
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Patent DE-3445640-A1 (DE)
Title: Impact hammer
Inventor: SALARIS GABRIELE
IPC: B25D11/10
Filed: 1984-12-14
Abstract: The impact hammer is used in motor-vehicle technology. With a conventional hammer, a large swing-back path is required and therefore the confined locations of a motor vehicle cannot be reached. With the impact hammer, however, the large swing-back path is no longer necessary. A large or small impact force is obtained due to the continuously variable adjustability. If the lever is pressed, the hammer head performs rapid reciprocating movements which correspond to the hammer impact. This becomes most clear from the drawing, which shows the assembled tool.
Patent DE-3500077-A1 (DE)
Title: Retaining body for fastening a plastic sealing sheet to a base
Inventor: WINKLER WERNER
IPC: E21D11/38
Filed: 1985-01-03
Abstract: The retaining body for fastening a plastic sealing sheet to a base has a fastening part which can be connected to the sealing sheet and a core piece. The fastening part can be released from the core piece via a predetermined breaking point. The fastening nail can be supported against a washer which is embedded in the core piece. The head of the fastening nail is accommodated by a bore passing through the core piece. 
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Patent DE-3502665-A1 (DE)
Title: Load-equalising gear mechanism
Inventor: PLUM DIETMAR DIPL ING
IPC: F16H3/72
Filed: 1985-01-26
Abstract: Asynchronous motors assigned load-equalising gear mechanisms are used for the conveying systems used in underground mining and tunnelling. Given a plurality of drives assigned to a conveying system of this kind, these load-equalising gear mechanisms produce an advantageous load equalisation due to the fact that the gear mechanism consists of a power branch and a superimposition branch, the latter having, in addition to the superimposed drive (motor) or output (brake), a self-locking planetary gearing or a planetary gearing designed to fall just short of self-locking. <IMAGE>
Patent DE-3508380-A1 (DE)
Title: Core for a steering wheel
Inventor: UCHIDA SADAO
IPC: B62D1/04
Filed: 1985-03-08
Abstract: The invention relates to a core for steering wheels, which is characterised in that the circular steering wheel rim of the core has a groove which has a base which extends along the entire inner circumferential face, in that the spoke component of the core is fitted with the free spoke ends into the core, in that auxiliary connection elements consisting of the same metal material as the steering wheel rim of the core are mechanically attached to the free spoke ends, and in that the free ends of the auxiliary connection elements are also fitted into the core and are welded to the steering wheel rim at the connection point to the said rim. Thus, the spoke component core element can be permanently connected to the steering wheel rim core element with sufficient rigidity using auxiliary connection elements, the formation of a difference in level being avoided at the circumference of the steering wheel rim by the use of the auxiliary connection elements.
Patent DE-3510286-A1 (DE)
Title: Method of operating radiation sterilisation apparatus and a device for carrying out the method
IPC: A61L2/24
Filed: 1985-03-19
Abstract: In a method of operating radiation sterilisation apparatus in cabinet or tunnel design with a low-turbulence air stream passed through a Hosch filter and directed toward the objects to be sterilised, the temperature necessary for sterilisation being generated by infrared quartz glass radiators, the air stream is to be kept at a much lower temperature than is needed for sterilisation, the sterile temperature of the objects being achieved as a result of interaction between the heat of radiation and the heat of convection. In the radiation sterilisation apparatus suitable for conduct of this method a heat exchanger controlled by a temperature sensor in the pressure chamber is provided for control of the temperature of the air stream. <IMAGE>
Patent DE-3521517-A1 (DE)
Title: Machine tool
Inventor: WUNDERLICH BERND
IPC: B24B41/02
Filed: 1985-06-15
Abstract: In the case of a machine tool, in particular a hollow-cylinder internal grinding machine, having a workpiece slide (12), carrying the workpiece (1), and a tool slide (35) carrying the tool (36), the two slides (12, 35) can be displaced perpendicularly to each other. In order to ensure a lesser degree of displacement of the slides (12, 35) when machining the workpiece (1), the workpiece slide (12) is mounted in a suspended manner. <IMAGE>
Patent DE-3521621-A1 (DE)
Title: Shaft for a ball racket
Inventor: ERNST HANS-HELLMUT DIPL ING
IPC: A63B49/02
Filed: 1985-06-15
Abstract: The shaft of a ball racket, especially a tennis or squash racket, has a handle at one end and two gripper arms which form a fork at the other end, and which hold in a replaceable fashion a frame which serves to accommodate the strings which form the striking surface. The frame and the gripper arms which are pretensioned and bear on the frame with their entire length, positively engage with one another and the handle is releasably fastened onto the shaft. <IMAGE>
Patent DE-3524857-A1 (DE)
Title: Device for testing surfaces difficult to access
Inventor: SCHLUETER HEINZ ING GRAD
IPC: G21C17/007
Filed: 1985-07-12
Abstract: The invention relates to a device for testing nozzle lanes on closure heads of nuclear reactor pressure vessels. For this purpose, a test carriage with a test system located thereupon is drawn through the nozzle lanes to be tested by a circulating cable. In this case, the cable runs on both ends via deflecting rollers which are mounted rotatably in brackets, and the brackets, in turn, are fixed in bores of the closure head flange. In order, viewed at right angles to the direction of travel, to keep the test system, which is mounted on the test carriage, in an axially parallel position relative to the nozzles, said carriage runs on three rollers of which a first, middle roller is height-adjustable, and two second and third rollers, which are mounted in a common support rail, are laterally adjustable. Owing to these features, during the passage over the spatially curved closure head surface the test system can always be held in an axially parallel position, seen at right angles to the direction of travel, relative to the nozzles, in order to be able to test as large as possible a portion of the closure head surface.
Patent DE-3527859-A1 (DE)
Title: Arrangement for constructing a boundary way on an embankment slope
Inventor: CLAUS HERMANN
IPC: E02D5/74
Filed: 1985-08-02
Abstract: The arrangement utilises injection rods (3, 10) driven vertically at first distances apart and roughly horizontally at second distances apart into the embankment slope. Grouting compound for optimum anchoring in the embankment material is injected through the injection rods (3, 10). The vertical and horizontal injection rods (3, 10) are connected to one another via a supporting structure (5) put down on the embankment slope. Fastened to the vertical injection rods (3) are wall elements (6) which define relative to the slope (1) a space filled with load-bearing filling material, the filling material (7) in turn supporting the surfacing (2.1) of the boundary way. The supporting structure (5) supports the wall elements (6) on an upper bearing surface at least partly as a line load. The supporting structure is constructed according to the modular construction principle and is connected to the vertical injection rods (3) by means of clamping means but to the horizontal rods (10) via articulated connections (8, 9). <IMAGE>
Patent DE-3529506-A1 (DE)
Title: Hinged armrest for, in particular, motor vehicles
Inventor: BUCHHOLZ HORST
IPC: B60N2/75
Filed: 1985-08-17
Abstract: In the case of a hinged armrest, in particular for motor-vehicle seats, which is connected to the seat via a hinge arranged at the level of the armrest and can be released from the locked normal position by being pulled in its longitudinal direction forwards counter to spring force, it is intended to simplify the production and fitting of the articulation of the armrest on the arm-rest carrier. For the solution it is proposed that a guide pin (18) attached in the region of the hinge (17) to the armrest is movable into the guide slots (19, 20), fixing the rest and the pivot position of the armrest (16), of a link (21) connected to the seat (10) in a manner such that it is fixed against twisting. <IMAGE>
Patent DE-3529735-A1 (DE)
Title: Bearing for the back rest of a rear seat of a motor vehicle
Inventor: THILL ALBERT DIPL ING
IPC: B60N2/02
Filed: 1985-08-20
Abstract: An adjustable back rest (4) for the rear seat of a motor vehicle which engages with bearing pins (5, 8) in upper and lower receptacles (9, 3) is to be capable of being installed and removed without a tool. According to the proposal, this is achieved in that the lower receptacles (3) each have an inverted U-shaped connecting link (6) into which the associated bearing pin (5) is introduced from outside through a recess (7). <IMAGE>
Patent DE-3533260-A1 (DE)
Title: Guillotine shears
IPC: B23D15/06
Filed: 1985-09-18
Abstract: In guillotine shears, in particular for cutting sheet-metal strips, with a top blade (3) and a bottom blade (2) as well as a strip-straightening unit which is arranged in front of the bottom blade (2), is controlled in synchronism with the movement of the top blade (3) during the cut and is pivotable to a limited extent via a pressure-medium cylinder (10), the straightening unit has a multiplicity of pressure pieces (5) which sit on a beam (8) pivotably mounted at one end and connected at the other end to the pressure-medium cylinder (10). A separate pressure-medium cylinder (7) is allocated to each pressure piece (5). The pressure surfaces (11) of the pressure pieces (5) are arranged individually at an angle to the axis of the associated cylinder (7) and run parallel to the sloping cutting edge (4) of the top blade (3). <IMAGE>
Patent DE-3537762-A1 (DE)
Title: Process for the preparation of N-tert-alkylpyridine-carboxamides
Inventor: MARZOLPH GERHARD DIPL CHEM DR
IPC: C07D213/82
Filed: 1985-10-24
Abstract: N-tert-Alkylpyridinecarboxamides can be prepared by reaction of a pyridinecarbonitrile with an alkylating agent supplying tertiary carbenium ions in the presence of from 50-94% strength sulphuric acid at 0 to 100 DEG C. The reaction is preferably carried out without further solvent.
Patent DE-3538198-A1 (DE)
Title: Device for measuring a physical property of a flowable mass which can be collected in a vessel
Inventor: ALHAEUSER ERICH
IPC: G01N27/28
Filed: 1985-10-26
Abstract: A device for measuring a physical property of a flowable mass which can be collected in a vessel such as, in particular, a liquid, has a single- or multi-part probe (30) which is connected to an electric or electronic measuring device (24), is disposed on a support (14) for the vessel (10) and is designed so as to be immersible in the vessel. Such a measuring device can be developed simply and inexpensively and, without anything else being involved, forces the user to carry out the measuring procedure continuously, which is essential particularly in those cases where the flowable mass has first been treated in a manner changing its physical properties and the treatment agent as a result is getting increasingly exhausted. <IMAGE>
Patent DE-3539226-A1 (DE)
Title: Rotary transmission leadthrough
Inventor: SCHUERMANN HORST
IPC: E21C35/23
Filed: 1985-11-05
Abstract: The invention relates to a rotary transmission leadthrough for the admission of a liquid to the cutting edges of tools of heading and winning machines for mining or tunnelling, consisting of a stator connected to a liquid feed and a rotor surrounding the stator at its front end and having several outlets for spraying the cutting edges of the tools, the stator and rotor being connected to one another via passages or the like for the passage of the liquid, and at least one radially arranged passage of the stator being allocated to the outlets of the rotor, which passage leads into an axially running passage of the stator. In order to create a rotary transmission leadthrough of the aforesaid type which is simple to manufacture and assemble, has a long service life and in addition enables the cutting edges of tools of the associated machine to be sprayed in sectors, it is proposed according to the invention that the rear end (5) of the stator (1) be coupled to a swivel drive (10) and that the front end (3) of the stator (1) surrounded by one or more annular rotors (6) be provided with one or more annular grooves (13) in its circumferential surface in the area of the outlets (7) of the rotor (6) or rotors (6), which annular grooves (13) extend over part of the periphery of the stator (1). <IMAGE>
Patent DE-3540441-A1 (DE)
Inventor: FICHT REINHOLD
IPC: F01L7/10
Filed: 1985-11-14
Abstract: The invention relates to an internal combustion motor, in particular a lift-piston motor with internal combustion and with cylinders arranged in-line, as well as with at least one rotating control element for the gas charge change processes, which is arranged between cylinder block and cylinder cover with an axis of rotation lying perpendicular to the cylinder axis and between two pivots extending rotation-axially presents a control body standing in fixed connection with the pivots, there being provided counter-surfaces in the cylinder head surrounding the control body and the pivots uniformly and each pivot being traversed by an axially extending gas channel, which goes over in each case into an elbow-shaped gas channel arranged in the control body, which channel emerges with an opening at the surface of the control body, and an arrangement being provided for the transfer of a rotary movement from the crankshaft to the control element, characterized in that the control body is constructed as a sphere, in particular as a hollow spherical body.