baber/WOPTO huggingface dataset:
Patent DE-4018857-A1 (DE)
Title: Indirect drive for membrane blood pump - has computer-controlled EM linear drive with armature coated with non-magnetic material
Inventor: HEINRICH WOLFGANG DR ING
IPC: A61M60/851
Filed: 1990-06-13
Abstract: Both end faces of the armature are bored. It is directly inserted in a cylindrical guide sleeve with position sensors and electrically controllable valves. The sleeve is sealed at both ends by non-magnetic closure lids (2, 3).$  The drive medium is formed in one of two pressure chambers (4, 5) defined by the guide sleeve (1), closure lids and the armature (6). Flow channels (7, 8) are provided in the closure lids. The armature is sealed w.r.t. the guide sleeve. The armature is longer than the magnetic circuit of the e.m. linear drive (O).$  USE/ADVANTAGE - Assisted blood circulation. Pneumatic drive for intra-aorta balloon pulsation. Clear, simple mechanical construction, reliable, low noise, easily controlled.
Patent DE-4025540-A1 (DE)
Title: Armoured vehicle infrared protection system - incorporates cowl over engine with continuous heat-insulating lining
Inventor: GERST KARL-HEINZ DIPL ING
IPC: F41H3/00
Filed: 1990-08-11
Abstract: The protective system reduces IR radiating from an armoured transport vehicle, this having an air inlet above the engine chamber leading directly to a radiator with centrifugal fan. Air outlets are provided in one or both sidewalls. The engine chamber (1) is covered by a cowl (4) having a continuous heat-insulating lining (10) joining onto that (11) in the hull (1a). Air inlets and outlets and an exhaust outlet (31) in the cowl pass through the lining and are in a horizontal plane (X-X). They are masked at top and sides, and are aimed towards the ground. At the radiator inlet (6) baffles (14,15) spaced apart form between them a labyrinth-type annular port (13). USE/ADVANTAGE - Simple protection system for armoured vehicle requires no additional power or space.
Patent DE-4027725-A1 (DE)
Title: Optical signal branch element for communications or data network -  uses pyramid prism optical components lying in incoming and outgoing optical fibre planes
Inventor: STAUDTE BERND
IPC: G02B6/36
Filed: 1990-08-30
Abstract: The branch element comprises at least 3 optical components (2,3,4) coupled to incoming and outgoing optical fibres, arranged in respective planes (A,B). The latter are coupled via 2 of the optical components (2,4), the latter pref comprising tetragonal pyramid prisms (2,3,4) with each of their sides formed by an equilateral triangle. Pref. the optical components (2,3,4) lie within a cylindrical mounting which can be rotated via a horizontal or vertical axis via an associated drive. USE- For optical signal transmission network.
Patent DE-4031057-A1 (DE)
Title: Textile machine robot actuated by brushless DC motor - has reciprocating slider with handling and winding equipment mounted on carriage driven along vertical threaded spindle
Inventor: SLAVIK WALTER
IPC: B25J9/18
Filed: 1990-10-02
Abstract: A carriage (10) runs on wheels (105) along a lower rail (103) extending throughout the length of the machine, with an arm (107) supporting a guidance roller (109) in the trough of an upper rail (113). The carrier (T) is driven up and down a threaded spindle (196) as the latter is rotated by a motor (ME) whose shaft carries a rotor angle encoder (E) for purposes of position control and speed regulation, as well as for electronic switching of the DC supply. USE/ADVANTAGE - Esp. with spinning machinery. Relatively simple point-to-point controllers can be used to reduce capital costs.
Patent DE-4033932-A1 (DE)
Title: Prodn. of optical fibre star coupler - by hot pressing of plastic fibres into solid profile, joining to same section mixer rod and locking assembly in heat-shrink tube
Inventor: HUBER HANS-PETER DIPL PHYS
IPC: B29C67/00
Filed: 1990-10-25
Abstract: A plastic star coupler is produced with a number of plastic optical fibres of any cross-section, but circualr sections in partic. and with one cylindrical mixer rod. In the process the optical fibres are laid parallel in a press device which is operated so that they are all pressed together into one compact component; and end surface is produced at right angles to this component and the mixer rod of similar cross-section is joined on to that surface. The parallel optical fibres (L) are placed in the cavity (A) of rectangular cross-section in its block (G). A male press tool St) is moved down across the fibres and presses them all together into one compact mass, aided by heat. The mass now has the cross-section of the cavity (A) and tool (St). The movement of the male tool (St) is pref. limited by a stop so that the total cross-section of the compressed mass is the same as that of the original bunch of separate fibres. The pressed product can be joined to a mixer rod of the same cross-section at the end, pref. after applying a heat-shrink tube round the compressed mass. The tube is then shrunk on the joint. ADVANTAGE - The process is simple and requires no specialist knowledge of materials or expensive appts. It is accordingly suitable for use in the car industry etc. (2/5)
Patent DE-4036404-A1 (DE)
Title: Multiple telephone party lines connector for exchange lines - couples decentralised-locking telephones using overall loop current detector with AC by=pass capacitor and relay contacts for bridging during conversation
Inventor: PHILIPP GERD ING GRAD
IPC: H04M1/715
Filed: 1990-11-15
Abstract: The telephone subscriber's appts. (A1-A4) are connected pairwise (11,17) to the exchange line (La,Lb) via loop current detectors (S1-S4) whose control signals are AND-gated with that of an overall loop current detector (34) bypassed for AC by a single capacitor (38) of 470 microfarads and a protective diode (39). The combinatorial switching is performed by selective activation of setting windings (K1-K6) which have a switching transistor (26) in their common supply line, not operative during the calling phase. Bridging by contacts (K5,K6) eliminates attenuation during the speaking phase. ADVANTAGE - Space requirement for AC bridging equipment is reduced with fewer bulky capacitors.
Patent DE-4037927-A1 (DE)
Title: Stepwise level measurement arrangement - uses simple circuit contg. groups of capacitors with subgroups of parallel capacitors and digital comparison unit
Inventor: FILBERT DIETER PROF DR ING
IPC: G01F23/26
Filed: 1990-11-26
Abstract: The arrangement for stepwise level measurement contains capacitors (71-1..72-4,81-1..82-2) arrranged along a fill section with capacitance values affected by a dielectric formed by the fill material. The capacitors are arranged in one or two groups (70,80), each with two sub-groups (71,72;81,82) of parallel capacitors. Each two capacitors of a group in succession in the vertical direction and in the same dielectric have approximately the same capacitance and belong to different sub-groups. The sub-groups of a group are connected to a common comparator unit which forms a digital comparison signal according to the difference in the sub-group capacitances. At least some capacitors of one group are arranged for interpolation between those of the other. The group-wise digital signals form binary locations of an output signal. ADVANTAGE - Contains simple circuitry and exhibits long-term output signal stability.
Patent DE-4038064-A1 (DE)
Title: Burner for liq. fuel - works with torsion nozzle and combustion chamber, regenerating combustion particle filters and includes flow rectifier
Inventor: WEBER MARTIN DIPL ING
IPC: F01N3/025
Filed: 1990-11-29
Abstract: The burner has a rotation-symmetrical combustion pre-chamber (1), on the periphery of which a conduit (2) issues tangentially which is connected to a combustion air source. It has a torsion nozzle (3) fitted between the pre-chamber and the main combustion chamber (4) and by which the combustion air and fuel are fed into the combustion chamber. In the pre-chamber in the flow direction in front of an air inlet (12) of the torsion nozzle a flow rectifier (5) is fitted. This rectifier has a nave (6) and radially arranged blades (7) connected to it. The axis of the nave is arrange coaxially to that of the pre-chamber. The axial depth of the blades is at least equal to their radial extent, and they are formed as a one-piece structure with the nave. USE/ADVANTAGE - As a burner for liq. fuel in which the combustion gas has a uniform temp. and flow speed over the total cross-section of the particle filter.
Patent DE-4039463-A1 (DE)
Title: Steam prodn. plant for burning coal or heavy heating oil - has 30-70 per cent thermic power of fuel fed to stationary body layer and remainder to combustion unit
Inventor: HUSCHAUER HELMUTH
IPC: F23C1/00
Filed: 1990-12-11
Abstract: The stamp prodn. unit has a burner combustion section beneath which is any eddy layer combustion section, the walls of the latter being fully integrated in the water-steam-circuit of the steam prodn. unit. An eddy layer (9) is arranged in the combustion chamber (1), and has an open nozzle floor (26). Above the burner combustion section is a feed (12) for a desulphurizing additive. The open nozzle floor (26) of the eddy layer (9) has parallel nozzle bars provided with nozzle heads, space part by 400 to 500 mm. The combustion section has a low and even burner belt loading, and the eddy layer (9) is arranged in a funnel (8) in the lower part of the combustion chamber (1). USE - For burning raw brown coal or heavy heating oil in a stamp prodn. unit with simultaneous desulphurization.
Patent DE-4042065-A1 (DE)
Title: Viscous material dispensing pistol - has concentric tools located on nozzle puncturing bag
Inventor: SCHNEIDER FRIEDHELM
IPC: B05C17/005
Filed: 1990-12-28
Abstract: The dispensing pistol is for a bag of hose material containing highly viscous material. A nozzle (2) is fitted onto it, having two concentric pointed puncturing tools (3). It can have a piston (6) containing a recess (7) to accommodate the sealing clip (8) on the bag. ADVANTAGE - No need to cut bag open or remove clip.
Patent DE-4100123-A1 (DE)
Title: Child's seat head cushion on bicycle handlebars - is secured in position to protect child's head against injury
Inventor: TAEUBERT ANNETTE
IPC: B62J1/16
Filed: 1991-01-04
Abstract: The child's head and upper body protecting is mounted on the handlebars of a bicycle, and is used in conjunction with a child seat at the front of the bicycle. The cushion is fastened at a slight angle, over the centre of the handlebars, using brackets of sheet steel, steel wire, or plastics, or steel clips. It may also be fastened to other parts of the handlebars, at three points on the frame, and on the child seat, using special brackets. ADVANTAGE - Easy bicycle ride with improved child's comfort.
Patent DE-4102106-A1 (DE)
Title: Liquid level sensor - has functional monitoring circuit with logic combining photodiode drive pulses with light sensor output signals
Inventor: KAISER LOTHAR
IPC: G01F23/292
Filed: 1991-01-25
Abstract: The level sensor contains a light emitting diode, a photodiode and a trigger circuit controlled by the photodiode. Light transmission between the light emitting diode and the photodiode is reduced or prevented when the sensor is covered by the liquid. The light emitting diode is driven independently of the trigger circuit operating voltage. A monitoring circuit (18, 22, 24) drives the light emitting diode with pulses of defined frequency and duration and logically combines the drive pulses with the sensor output signals. The logical combination of the drive pulses with a signal produced by interrupting the operating voltage using the output signal is used to influence the first logic combination. ADVANTAGE - Contains comprehensive functional monitoring circuit enabling faults to be detected.
Patent DE-4103458-A1 (DE)
Inventor: NOETHE AXEL DR
IPC: G02B5/20
Filed: 1991-02-06
Abstract: The invention relates to a glazing element which is transparent in the visible region of the spectrum and has a low reflectance for radar radiation of a frequency of approximately 1 GHz and a high reflectance for IR radiation. The glazing element consists at least of a first glass pane facing the radiation source and having a thickness of between 4 mm and 15 mm, and a second glass pane averted from the radiation source. The second glass pane carries an optically transparent, electrically highly conductive thin layer having a surface resistance of at most 50  OMEGA , and the first glass pane carries an optically transparent, electrically poorly conductive layer having a surface resistance of between 100  OMEGA  and 600 OMEGA . The two electrically differently conductive layers are arranged at a radar-optical distance of at least approximately 30 mm - nglass (radar) . D and at most approximately 100 mm - nglass (radar) . D (D = total thickness of all glass panes between the radiation source and the poorly conductive layer on the first glass pane). <IMAGE>
Patent DE-4106257-A1 (DE)
Title: Throttle flap controller for combustion engine air intake - incorporates redundant microprocessors with multiplex input-output diagnostic memory and watchdog logic for emergency switch operation
Inventor: GOMMERS GEORG
IPC: F02D11/10
Filed: 1991-02-28
Abstract: A potentiometer (2) connected to the accelerator pedal (1) sends a signal (3) to an electronic controller (4) of a motor (7) acting on the throttle flap (8) directly or through redn. gearing. The flap position is fed back from another potentiometer (10) to the controller (4) in which two microprocessors (20,21) are linked by a data bus (22) and dual ported latch component (23). Each microprocessor (20 or 21) monitors the other (21 or 20) and responds to any fault by switching (26) to an emergency operational routine (27). ADVANTAGE - After component or engine failure, emergency operation is possible with device which is not overloaded with mechanical parts.
Patent DE-4111726-A1 (DE)
Inventor: GODDERIDGE VOLKER DIPL ING
IPC: B22C5/18
Filed: 1991-04-10
Abstract: The invention relates to a process for the mechanical cleaning of foundry used sand by means of thermomechanical regenerations, in which the sand is blown pneumatically against a deflection hood and the mechanical-pneumatic cleaning is performed batchwise in a separate container. The process can be used both as pre-cleaning and as after-cleaning. In the case of pre-cleaning there is a simultaneous drying, preheating, pre-cleaning and sifting, whereas with after-cleaning there is a simultaneous cooling, after-cleaning and sifting. As a result of the batchwise operation, all the quartz particles are exposed roughly to the same friction treatment and consequently, in conjunction with a simple control of the cleaning process, reduced grain destruction is achieved.
Patent DE-4114705-A1 (DE)
Title: Mounting for attachment of vehicle chassis sections - has mounting providing easy attachment and adjustment, with spacing and quick clamp having self locating points
Inventor: BAER GERD
IPC: B60P1/44
Filed: 1991-05-06
Abstract: The mounting is for attachment of a channel section designed to form part of the rear section of a vehicle chassis. It has two mounting plates fixed to the chassis arm (24). The channel section for attachment fits at least partly in between these plates, and is fixed via attachment devices located in required load bearing positions. Spacers and a quick clamping mechanism hold the channel section, spacers and mounting at least partly in position. USE/ADVANTAGE - Easy assembly and exchangability, good load bearing characteristic, cost-effective mfr.
Patent DE-4120450-A1 (DE)
Title: Motor drive camera shutter - comprises lamellae with signal edges in bordering region for opening or closing according to rotation of motor
Inventor: TAGAMI SHIGERU
IPC: G03B7/10
Filed: 1991-06-20
Abstract: A light interrupting unit (19) has a light sensing and a light receiving element to deliver first and second light interruption signals in connection with first, second or third signal edges of the shutter lamellae (17). A timer provides a count value dependent on the light of the subject and uses the first interruption signal. It starts counting in response to the second interruption signal. A drive unit (DV) controls the motor (MT) according to the count value given by the timer. A shutter lamella has a designated first edge (17b) and a rectangular aperture (17c) whose front edge serves as the second edge and its rear edge as the third. These edges break the light beam (19a) of the photo-coupler (19) or let it through to generate the first or second interruption signal.  The first delivers a start speed coefft. (TS). ADVANTAGE - Copes with vagaries such as drop in battery power, variation of discharge peak due to conflict between motor load in driving shutter and other loads, and changes in use of camera, e.g. position, temp. and humidity.
Patent DE-4122722-A1 (DE)
Inventor: HAFFER GREGOR DR
IPC: C07C209/14
Filed: 1991-07-06
Abstract: The description concerns a process for producing indole derivatives in which substitution with an imine is performed in the presence of phosphoric acid, and intermediate products of this process and the production of the intermediate products.
Patent DE-4129111-A1 (DE)
Title: Cage for roller bearing - has groove at roller insert face providing optimum guide and retaining functions.
Inventor: SCHMITT GERHARD
IPC: F16C33/46
Filed: 1991-09-02
Abstract: The cage for a roller bearing has side rings with connecting sections. These have an axial leading face, concave in shape, and retaining edges (9) for the rollers at the insert openings. A radial groove (7) is machined at the insert opening for the rollers (3), radially opposite the surface (5) section (2). The width of the groove base (17) takes up the majority of the section length, and both outer side surfaces (13) form boundary faces for the retaining edges. ADVANTAGE - Weight reduction of cage, easy insertion of roller.
Patent DE-4131717-A1 (DE)
Title: Printed circuit boards with specified thermal expansion - comprises copper@ clad sheets interleaved with sufficient aluminium@ carbon@ fibre aluminium@ composites to produce desired expansion coefft.
Inventor: BELTING ARNOLD DIPL ING
IPC: H05K1/05
Filed: 1991-09-24
Abstract: In a PCB two outer layers of material coated with an electro conducting surface have between them at least one composite sheet of metal/carbon fibre/metal construction; in this the thicknesses of the metal and carbon fibre layers are adjusted to match the coefft. of thermal expansion of the electrical components on the board. Pref. constructions include aramid prepreg, copper conductors and aluminium. The figure shows a PCB with a composite sheet in the centre. The individual circuitry layers have appropriate conductor patterns and can make contact with each other or through the composite sheet. The sheet can be drilled at suitable points and adhesive then flows into the hole to provide insulation. Insulation can also be provided by anodising aluminium sheets. ADVANTAGE - The PCB can be adjusted in its thermal expansion in both directions as required.
Patent DE-4132785-A1 (DE)
Title: Convertible piece of furniture -  is recliner or seat and has outer and inner part, with lock, releaser and block
Inventor: PAPST ERICH
IPC: A47C17/13
Filed: 1991-10-02
Abstract: The convertible piece of furniture, such as seat, has at least two pull-out parts, such as an upholstered seat support, extra upholstery support, carriage pulled out from a base-frame or extra carriage. In the recliner position, the outer part (4) has a locking piece (20, 24) with release (12) and is locked in position by means of a block (30, 31). The locking piece is formed of a ratchet (20), a hooked lever (19) mounted on the inner part (3) or base part (1, 2). The ratchet (20) or hooked lever (19) has a continuation (24) operating with a matching recess (37) on the inner part (3) or base (1, 2) and moved with of a two-armed lever (8) inner end (23) movably mounted on the part (3). The lever (8) outer end (18) is moved by the outer part (4) or control (12). USE/ADVANTAGE - The pull-out furniture is secured against retracting.
Patent DE-4135135-A1 (DE)
Inventor: GOEPEL THEO
IPC: F02B19/14
Filed: 1991-10-24
Abstract: A reciprocating piston internal combustion engine 10 with self-ignition comprises at least one cylinder 11 with a main combustion chamber 19, at least one comparatively smaller ignition chamber 20 for each cylinder 11, each ignition chamber 20 being connected to the main combustion chamber 19 by way of an injection port 21, and an adjustable delivery injection pump 17, by means of which fuel can be injected by way of an injection nozzle 16 into the main combustion chamber 19. For reciprocating piston internal combustion engines which have a piston displacement with two separate injections, one ignition chamber per cylinder 11 has an injection pump 23 without adjustable delivery for a separate fuel injection. In reciprocating piston internal combustion engines which have a piston displacement with only one injection, one ignition chamber 20 per cylinder 11 has a glow device as starting aid, for example in the form of an electrical spiral-type permanent glow plug, and/or an ignition pin of temperature resistant, heat-retaining material extending into the area of the centre of the ignition chamber. 
<IMAGE>
Patent DE-4136454-A1 (DE)
IPC: B66F3/12
Filed: 1991-11-06
Abstract: The lack or support leg 1 is attachable to, although removable from, the chassis or body of a vehicle (not shown), but is normally carried attached at a point where it may be operated to raise or lower the vehicle. The jack 1 comprises a pair of levers 9 movable between stowed and 16 operative positions by a screw and nut drive 5, 6, 7, 8 which may be operated by an electric motor 15 powered from the vehicle battery. <IMAGE>
Patent DE-4139516-A1 (DE)
Title: Advertising column incorporating coin-operated telephone - has telephone housed in booth provided by hollow bottom part of column beneath advertising display surface
IPC: G09F15/00
Filed: 1991-11-30
Abstract: The advertising column (1) has an external advertising display surface (2) and an internal hollow spaced (3) in which a coin-operated public telephone is housed. Pref the display surface is provided by the upper part of the cylindrical advertising column, the lower part of which acts as a telephone booth. Further coin-operated telephones may be housed in auxiliary booths adjacent the bottom part of the advertising column, pref having a similar configuration to the latter. ADVANTAGE - Allows advertising revenue to subsidise provision of public telephones.
Patent DE-4140667-A1 (DE)
Title: Lubricant system for motor vehicle - has oil collection chambers for individual drive units, connected to common circuit with pump, cooler and filter
Inventor: HEINRICH ROLF
IPC: F16N39/00
Filed: 1991-12-10
Abstract: The system is for the drive of a motor vehicle, which consists of e.g. IC engine, converter clutch, transmission, retarder, and drive axles. Each unit stores a lubricant oil volume. The oil collection chambers (1-5) are connected to a common oil circuit. The circuit has oil pump (10), oil cooler (14), and oil filter (16). Each collection chamber is connected to a suction tube (6), the active suction level (s) of which is below a normal oil (n) level, and above a minium level (m), required to maintain lubrication. Each tube has a float valve (7), which seals the tube when the oil level falls to below normal. USE/ADVANTAGE  - Motor vehicle lubrication system is simple and economical, allowing simplified maintenance.