baber/WOPTO huggingface dataset:
Patent DE-3728425-A1 (DE)
Title: Loudspeaker box having an emission characteristic which is positively matched to the method of operation
Inventor: SCHINNERLING PETER
IPC: H04R3/14
Filed: 1987-08-26
Abstract: Loudspeaker boxes (cabinets) are generally designed for direct emission and their electroacoustic data are thus determined when the box is standing on its own. It is known for multi-path boxes to be equipped with switches and/or regulators, by means of which the filters are electrically varied in order thus to be able to carry out acoustic matching or matching to taste. However, there are two special cases of interference of the optimum sound impression. These are: if a box which is designed for free-standing, direct emission, that is to say with a vertical sound wall, is intended to be operated lying on its back for any reason, then this indirect emission leads to an unsatisfactory sound impression. Secondly: if such a box is fitted to a room wall then it generally has an unsatisfactory tendency to hum. The object was to solve both these problems. A push button on the rear wall of the box is necessarily pushed in in the problematic mode of operation and produces a switching changeover in the filter branches of the medium-level tone control in order to solve the first problem, as a result of which its frequency response, level and polarity can be changed. In the case of the second problem, a low-frequency filter can be switched on and over in the filter branch for the low-frequency tone control. The positively automatic changeover for a change in the emission characteristic is, however, possible for a box only either for the "resting on its back" operating mode or "hanging on the room wall", as in the description ... Original abstract incomplete. <IMAGE>
Patent DE-3730388-A1 (DE)
Title: Arrangement of a coin tester in a cupboard-like machine housing of an entertainment machine
IPC: G07F17/32
Filed: 1987-09-10
Abstract: Arrangement of a coin tester in a cupboard-like machine housing of an entertainment machine having a video-screen tube. A coin-operated entertainment machine is arranged in a cupboard-like machine housing having a desk-like game board. This projects beyond the front side of the machine housing which is arranged underneath the game board and in which a coin-insertion slot is provided. The coin tester corresponding to the coin-insertion slot is to be arranged in such a way that coin insertion and accessibility for servicing the coin tester become easier. By means of the coin tester arranged above the desk-like game board in the region of the rear wall of the machine housing, the coin-insertion slot is arranged conspicuously for the player and easily within reach and maintenance and servicing work can be carried out in a comfortable posture.
Patent DE-3734280-A1 (DE)
Title: Tool-carrier arrangement for rotary broaching machines
Inventor: BERBALK HERMANN ING GRAD
IPC: B23D43/06
Filed: 1987-10-09
Abstract: The invention relates to a tool-carrier arrangement for rotary broaching machines, in particular for crankshaft machining, in which at least one basic tool body on which at least one rotary broaching tool segment is arranged sits interchangeably on a tool-carrier shaft. In order to permit a tool change by means of an automatic tool changer, the basic tool body has two clamping surfaces onto which in each case a releasable clamping ring can be axially slipped.
Patent DE-3737572-A1 (DE)
Title: Controllable quantum pot structure
Inventor: BENEKING HEINZ PROF DR RER NAT
IPC: H01L29/737
Filed: 1987-11-05
Abstract: In a semiconductor device which forms a quantum pot structure, controlling of the energy overlap required for resonant tunnelling is performed in an independent way by an externally controllable electric potential being applied to the layer forming the quantum pot.
Patent DE-3741726-A1 (DE)
Inventor: WEBER JUERGEN DIPL CHEM DR
IPC: C07C209/26
Filed: 1987-12-09
Abstract: A process for the preparation of tertiary N,N-dimethylamines by reaction of primary amines with formaldehyde and hydrogen as starting substances under pressure and at elevated temperature on a nickel- containing hydrogenation catalyst in the liquid phase. The hydrogenation catalyst is suspended in a solvent and the nickel concentration is 0.1 to 10% by weight relative to primary amine to be employed. The starting substances are introduced into the catalyst suspension separately from one another, but simultaneously, at 80 to 150 DEG C and 1 to 15 MPa with mixing, and reacted to give tertiary N,N-dimethylamines in one reaction step.
Patent DE-3800952-A1 (DE)
Title: Standard-shackle load anchor for a concrete structural part
Inventor: TRITZSCHAK EBERHARD
IPC: E04G21/14
Filed: 1988-01-15
Abstract: Published without abstract.
Patent DE-3806330-A1 (DE)
Title: Method for switching replay signals in a magnetic video tape device
Inventor: FEHLAUER EWALD
IPC: H04N5/93
Filed: 1988-02-27
Abstract: A method for switching replay heads in a magnetic video tape device is proposed. The replay signals replayed from the magnetic tape are switched within horizontal blanking intervals in a main signal path and within active line periods in an auxiliary signal path. The parallel-connected main and auxiliary signal paths in each case consist of a controlled change-over switch, a demodulator and a low-pass filter. The low-pass filter of the auxiliary signal path exhibits a narrower transmission bandwidth than the low-pass filter of the main signal path. Using a further change-over switch, switching is effected between the signals of the two signal paths in the horizontal blanking interval.
Patent DE-3806568-A1 (DE)
Title: Device for adjusting the proximity of a trailer to a tractor
Inventor: MIRO BRAVO VICENTE
IPC: B60D1/44
Filed: 1988-03-01
Abstract: The invention relates to a device for adjusting the distance between a tractor and a trailer in dependence on changes in direction between the tractor and trailer which are caused by cornering or by a change in the slope of the carriageway. In order to maintain an optimum distance between the lorry and trailer under all driving conditions, there is provided a sensor arrangement (4, 5, 6, 15) for detecting the distance between the tractor and trailer when cornering and when the slope of the carriageway changes, which sensor arrangement cooperates with corresponding screens or activators (7) and triggers a pneumatic cylinder (23). The trailer coupling device (1) is connected via a slide (18) to the piston (24) of the pneumatic cylinder so that the coupling point between the trailer and tractor can be shifted in the longitudinal direction on the tractor as a function of the pneumatic cylinder being triggered. The invention can be used in the construction of motor vehicles. <IMAGE>
Patent DE-3810619-A1 (DE)
Title: Steplessly lockable adjusting element
Inventor: ERNST HANS-HELLMUT DIPL ING
IPC: B60N2/90
Filed: 1988-03-29
Abstract: A description is given of a steplessly lockable adjusting element 20 which can be produced cost-effectively in standardised sizes with the smallest constructional volume. It accommodates in a housing 1 the guide elements 3 and the locking elements 2 which are designed as clamping plates 4. Clamping plates 4 are of small construction, are cheap and light and can be reliably locked in a stepless fashion at a high load-bearing pressure. A drive 14/19 can also be integrated into the adjusting element, so that adjusting, locking, driving and guiding can be performed with one module. The adjusting element is guided and locked on a strut 10 which can be a flat or hollow profile. It is connected to the actual load carrier, which can be a platform with the most diverse tasks, by means of fastening eyes 16. By using open clamping plates 4' of an open U-profile type, easy assembly and disassembly on the strut 10 can also be carried out subsequently. <IMAGE>
Patent DE-3813741-A1 (DE)
Inventor: BOETTGER WOLFGANG
IPC: D04B1/00
Filed: 1988-04-23
Abstract: The invention relates to a constructional element (1) on a knitwear basis, specifically on a spaced knitwear basis, with at least one first ply (2) and one second ply (3) and intermediate webs (4) connecting these plies, and proposes, in order to achieve a high stability, whilst at the same time nevertheless ensuring a relatively low proportion of resin, that the spaced knitwear consists of an industrial yarn, such as aramid fibre, carbon fibre, ceramic fibre or especially glass fibre, and that the spaced knitwear be hardened by resin saturation, the intermediate webs (4) forming rigid spacing elements of the first ply (2) and second ply (3). 
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Patent DE-3818793-A1 (DE)
Inventor: GOERLITZ FRANK-OTTO DIPL ING
IPC: B65H9/10
Filed: 1988-06-03
Abstract: The device for orienting and opening flat-lying plastic bags (S) has a delivery table (2) at which, to align the bag, two bars (3, 4) extending in parallel at a distance are held so as to be capable of being moved to and fro with respect to each other by means of a drive (16) in one direction beneath the table and are equipped with centring fingers (5) projecting upwards through slots in the table. To align the bag in the other direction, there is provided between the bars (3, 4) an endless conveyor which extends parallel to the bars and can be reversibly driven and whose upper strand (15a) extends in a recess in the table just above the plane of the table. Assigned to said conveyor are pressure rollers (17 or 18, 19) which can be lowered onto the end regions of the upper strand 15a of the conveyor. Furthermore, sensors (24, 25) which can be activated in each case by the deposited bag, are arranged in the table plate so as to control the lifting movement of the pressure rollers and the endless conveyor. <IMAGE>
Patent DE-3827523-A1 (DE)
Inventor: PROBST MARTIN
IPC: E01C19/52
Filed: 1988-08-12
Abstract: The invention relates to a device for laying stones, particularly for paving stones, curb stones and composite stones or the like, having a front axle (4) which is pivotably mounted on a base frame (6) by an attachment mechanism (12), having a rear axle which is pivotably mounted on the base frame (6) by a rear attachment mechanism (15), and having a jib (8), to the free end of which a laying claw (9) or the like can be attached and which can be moved in a vertical plane. The jib (8) is fixed to an axle (10) which extends coaxially to the front pivot (11) about which the front axle (4) is rotatable relative to the base frame (6) carrying the essential structure and fittings of the laying device. One end of the axle (10) is rigidly linked to the movement of the front axle (4), whereas the other end of the axle (10) is rotatably mounted in a part (7) connected to the base frame (6). 
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Patent DE-3828710-A1 (DE)
Title: Ski boot
Inventor: RIEDEL TILO
IPC: A43B5/04
Filed: 1988-08-24
Abstract: A ski boot consists of a shell (1) forming a sole (2) and of a shaft (3) which is articulated on the shell (1) in the region of the inner and of the outer ankle bone with the aid of at least one articulation pin (6, 7) and is composed of a shaft front part (5) and a heel flap (4). In order advantageously to ensure an adjustment of the minimum forward-lean inclination of the shaft (3), there is provided between the edge (16) of the shell (2) overlapped by the shaft front part (5) and the instep-side edge (8) of the shaft front part (5) a wedge drive with at least one adjusting wedge (17) which can be displaced transversely to the instep by a screw drive. <IMAGE>
Patent DE-3830359-A1 (DE)
Title: Member that can be introduced and/or implanted in the body, body parts or body cavities
IPC: A61M25/00
Filed: 1988-09-07
Abstract: A member that can be introduced and/or implanted in the body, body parts or body cavities and is made of a non-metallic material or a non-metallic surface is to be designed in such a way that infections due to use of such members are reduced or entirely avoided. This is achieved in that the entire surface of this member or these members, or of part-regions of this member or these members which are operatively, but not geometrically, connected is or are provided with a metal coating (6). It is also possible for the material to contain, at least in the region of its outer surface (17), metal particles (18) in powder or granule form of a metal having oligodynamic effects, and for the outermost metal particles (18) to be at least partially uncovered at their surface (Fig. 1 and 5). <IMAGE>
Patent DE-3831669-A1 (DE)
Title: Selective fresh air separation
IPC: B01D53/04
Filed: 1988-09-17
Abstract: Published without abstract.
Patent DE-3834942-A1 (DE)
Title: Filter apparatus
Inventor: KISHI NORIAKI
IPC: F24F13/28
Filed: 1988-10-13
Abstract: Filter apparatus (120) having a multiplicity of filter elements (121, 122, 123) and at least one flexible joint element (124, 125) which joins the filter elements (121, 122, 123) together. The filter elements (121, 122, 123) are composed of an essentially inflexible material and have connection surfaces (121a, 122b, 122a, 123b) which run parallel to the direction of flow of the air flowing through a duct in which the filter apparatus (120) is provided. One end of the flexible joint element (124, 125) is joined to the connection surface of one of the filter elements (121, 122, 123) and the other end of the flexible joint element (124, 125) is joined to the connection surface of the neighbouring filter element (121, 122, 123). <IMAGE>
Patent DE-3834967-A1 (DE)
Inventor: ANSELEVIC JULIJ VULFOVIC
IPC: H01Q1/36
Filed: 1988-10-13
Abstract: The method of the invention consists in that the biological tissues under study are irradiated with an electro-magnetic flux in the form of radio-frequency pulses having a central spectrum frequency of from 0.5 to 10 GHz, whereupon a spatial position of the moving boundary between the biological tissues is determined from the phase shift of the return signal. The device for carrying the method into effect comprises a probing pulse shaper (1), a transmitting antenna (2), a receiving antenna (3), a return signal measuring unit (4) incorporating a stroboscopic range sweep detector (6) connected to the receiving antenna (3), and a pulse recording unit (5) connected to the measuring unit (4). The radiation emanating from the antenna 2 may be polarized to suit the biological tissue under study. <IMAGE>
Patent DE-3835260-A1 (DE)
Inventor: WINTER HORST FRIEDRICH
IPC: E05G1/10
Filed: 1988-10-15
Abstract: Safe (1) with a housing (2) and a door (4) arranged on its front side (3), with a built-in alarm device (16) having at least one sensor (21) detecting changes of state, with a signal device which can be triggered by the sensor (21), and with an image recorder (22) which can be triggered by the sensor (21). To produce image data as soon as the safe (1) is approached, the housing (2) has a chamber (8) with at least one viewing window (10) which is located outside the contour of the door (4) and is open towards the area in front of the front side (3) of the safe (1) and behind which are arranged the at least one sensor (21) and the image recorder (22). Preferably, the chamber (8) with the at least one viewing window (10) is arranged in the upper region of the housing (2) and the viewing window is located above the top edge (4a) of the door. Preferably too, the sensor (21) is a movement indicator and the image recorder (22) is an instant camera with an associated flashlight source (22c). <IMAGE>
Patent DE-3838139-A1 (DE)
Title: Method for the control of the concentration of a disperse phase in an emulsion or suspension
Inventor: MIETH HANS OTTO DIPL ING
IPC: B01F15/04
Filed: 1988-11-10
Abstract: The invention relates to a method and a device for the control of the concentration of a disperse phase in an emulsion or suspension, the measurement of the concentration of the disperse phase being carried out in the flowing continuous phase (so-called "in-line" measuring technology) and the admixture of the disperse phase being controlled as a function of this concentration. By means of the method proposed and the device for its realisation, it is achieved, inter alia, that even at low concentrations of the disperse phase to be admixed, a trouble-free influx of the same to the mixing point is ensured. With reference to the method, this is achieved, inter alia, by feeding the disperse phase to be admixed via a pulsating flow, a minimum flow of the disperse phase always being provided in the time intervals of reduced admixing. For the realisation of the minimum flow, according to one refinement of a device according to the invention, it is envisaged, inter alia, that the passage cross-section of the injection control valve necessary herefor is formed by at least one recess in the closing element (Figure 3). <IMAGE>
Patent DE-3838160-A1 (DE)
Title: Device for plant keeping, in particular for cultivated plants
Inventor: HOFMANN GUENTER
IPC: A01G27/02
Filed: 1988-11-10
Abstract: It is known to plant plants in a container, in which a hydroculture is arranged in a lower container region of the container and a nutritive substratum is filled in at least one further higher container region. In order to make possible a separate liquid supply with a small space requirement of the device, the nutritive substratum (4) is assigned, in the upper container region (5b), a liquid supply system (12) with its own liquid storage container (10) which is separated in a liquidtight manner from the lower container region (5a) but is integrated in the container (5). Device for a hydroculture and earth culture. <IMAGE>
Patent DE-3905348-A1 (DE)
Title: Arrangement for measuring the irradiation power occurring in a laser scanning microscope or the light power reflected and diffusely scattered on the irradiated object or the difference between the two powers
Inventor: LANDGRAF JUERGEN DIPL PHYS
IPC: G01J1/16
Filed: 1989-02-22
Abstract: In the arrangement, the photoelements 1 and 2 are arranged in such a manner that the light in the optical beam path between light source and object either passes through both photoelements or is reflected at them or passes through one photoelement and is reflected at the other, and that either both photoelements are connected together electrically in anti-parallel to form a two-port network or both photoelements are electrically connected on one side with respectively one input of the weighted-summing current/voltage converter 3, while their counter-electrodes are respectively at a constant reference potential. By means of the weighted summation or difference formation, with a corresponding selection of amount and sign of the weighting factors, an output signal proportional to the irradiated, reflected or absorbed light power results. The measuring arrangement is particularly suitable for integration in a microscope objective or for the construction of a measuring probe independent of the microscope. <IMAGE>
Patent DE-3911459-A1 (DE)
Title: Screwless connecting terminal and/or connection terminal
Inventor: HOHORST WOLFGANG DIPL ING
IPC: H01R4/48
Filed: 1989-04-05
Abstract: Published without abstract.
Patent DE-3918839-A1 (DE)
Inventor: ANDERSON JOHN MELVIN
IPC: H01J61/54
Filed: 1989-06-09
Abstract: An electrodeless intensity-discharge lamp, having an envelope (11) situated in the bore of an excitation coil (14) and the interior of which envelope is to be provided a discharge plasma (12), driven by the excitation coil, is provided with a pair of starting electrodes (16) each of which is either adjacent to (as shown), or enters the envelope through Fig 2 (not shown), the associated one of an opposed pair of envelope end surfaces (11b, 11c). Coupling of a high voltage pulse between the pair of starting electrodes causes an electric field to be produced, between each electrode and the other one of the electrodes or the excitation coil, of magnitude and position sufficient to cause the material within the lamp envelope to create at least one spark channel (18) in which the plasma can then be formed responsive to the normal field provided by the excitation coil. <IMAGE>
Patent DE-3919069-A1 (DE)
Inventor: LEHMKUHL HERBERT PROF DIPL CHE
IPC: C25D3/44
Filed: 1989-06-10
Abstract: The invention relates to organoaluminum electrotyles for the electrolytic deposition of aluminum which are characterized in that they consist of KF . 2 AlEt3 (A), KF . 2 AlMe3 (B) and MF . 2 Al(iBu)3 (C), wherein M = sodium or potassium or a mixture of both, in a molar ratio of A:B:C of from 2:1:1 to 7:1:1. The organo-aluminum electrolytes are dissolved in from 2 to 4.5 moles, based on the amount of MF employed, of an aromatic hydrocarbon which is liquid at 0  DEG C. The invention further relates to a process for the electrolytic deposition of aluminum on electrically conductive materials by using said electrolytes.
Patent DE-3919484-A1 (DE)
Title: Optical system for altering form of laser beam cross section - has follow-on lenses with offset axial angles and max. focus of 300 mm
Inventor: SCHEHRER INGRID
IPC: G02B13/00
Filed: 1989-06-14
Abstract: The method for changing the beam cross section, especially from laser diodes which in different emission planes send out light at different angles. The features provide at least two cylindrical lenses whereby the cyinder axis of the two are inclined against each other, up to an angle of 20 degrees. The focal distances of the two lenses of which the first is  widening the beam and the second is concentrating the beam, shall be no less than 1 mm and no more than 300 mm. In a cited example a focal distance of about 9 mm was used. The method, therefore, provides for relatively compact beam shape correction techniques. ADVANTAGE - Beam emissions from laser diodes can be inexpensively homogeonised to obtain any desired cross section e.g. cylindrical, elliptical.
Patent DE-3925396-A1 (DE)
Title: Fuel delivery pump with impeller in pump chamber - has radial separation wall on impeller periphery forming delivery cells on both sides of separation wall
Inventor: HUFNAGL REINHARD
IPC: F04D29/18
Filed: 1989-08-01
Abstract: Impeller blades (42,43) project axially from both sides of the separation wall (41). A side duct (35,36) is provided on either side of the impeller (13). A vent hole (50) is arranged for vaporised fuel. Each of the first delivery cells (44) spaced over an opening (51) in the separation wall at the periphery of the impeller is connected to a second delivery cell (45). The vent hole can axially cross over from the second delivery cell. The vent hole (50) is arranged so that it can cross over from the second delivery cell in the region of the opening (51). USE/ADVANTAGE - Fuel delivery pump based on side duct principle, esp. for volatile fuel. Further developed to give better venting of delivery cells and higher efficiency.
Patent DE-3930239-A1 (DE)
Inventor: KARTHAUS MICHAEL DIPL ING
IPC: B01D5/00
Filed: 1989-09-11
Abstract: A solvent condenser arrangement for a solvent recovery apparatus comprises at least two solvent condensers of which one is in operation at a time, while the other is defrosted; the at least two solvent condensers are supplied via a pump from a refrigerant container under vaporization pressure.
Patent DE-3939423-A1 (DE)
Title: Tool producing smooth or threaded bores from solid - has separate thread cutting ring fitting on shank of core hole producing end-mill
Inventor: LEEB FELIX
IPC: B23B31/113
Filed: 1989-11-29
Abstract: The tool is intended for the selective production of recesses and smooth or threaded bores from the solid.  A distinguishing feature is that the endmill (7) for machining core holes is separate from the internal thread milling cutter, which takes the form of a toothed ring (18) fitting just behind the endmill and locking in place so that it rotates with it. A bayonet lock (27,28) secures the endmill into a milling adaptor which has a bayonet lock fastening (33,34) into a main toolholder (5). In the configuration shown the main toolholder has cutter inserts (29) for counterboring. USE/ADVANTAGE - Versatile machine tool.  Different thread forms can be cut using same endmill to produce core hole.  Low tooling cost. Low set-up cost.