baber/WOPTO huggingface dataset:
Patent DE-2849298-A1 (DE)
Title: Electric locomotive drive with variable speed traction motor - has DC feed with natural inductivity not sufficient to smooth DC
Inventor: WILLIAMSON DENNIS FRANCIS
IPC: B60L50/13
Filed: 1978-11-14
Abstract: The traction motor is fed by an inverter. An incorporated alternating current generator has a drive for its rotor and an exciter for its field coil. The generator output current is rectified, which provides unsmoothed direct current to be fed to the inverter. The switching frequency of the inverter is so controlled as to obtain desired value of a basic frequency of the output A.C. The generator excitation current is so controlled that the basic amplitude of the generator output current, and thus also the mean value of the unsmoothed D.C. as well as the amplitude of the inverter output current, attains a desired value. The material, or imparted, inductivity of the D.C. supply has such a low value, as to be insufficient to smooth the D.C.
Patent DE-2850355-A1 (DE)
Title: Single-phase, low speed synchronous motor - has external rotor and stator with main and auxiliary poles
Inventor: MERKLE PAUL
IPC: H02K19/06
Filed: 1978-11-20
Abstract: The motor comprises a single coaxial excitation coil on the stator. The coil is supported on an iron structure which also supports iron discs on either side of the coil. The discs extend radially beyond the coil and are notched to give pairs of adjacent poles. One pole forms the main and the other-fitted with a short circuited winding- the auxiliary pole. The gap between one pole pair and the next is at least equal to the circumferential space occupied by a pole pair. The arrangement of alternating main and auxiliary poles, and the gap between such pole pairs, assists in ensuring run up in the correct direction. The poles on each disc may be arranged in line.
Patent DE-2850542-A1 (DE)
Inventor: FAUL WOLFGANG ING GRAD
IPC: C23F1/00
Filed: 1978-11-22
Abstract: Method of etching of surfaces of copper or copper alloys by way of an acidic solution containing an oxidizing agent. After removal of the copper surface, the etching solution is passed for regeneration of the oxidizing agent through an electrolysis cell having an anode and a cathode, with copper being deposited on the cathode. The etching solution is maintained free of chloride ions and contains as the oxidizing agent ferric sulfate in a concentration of up to about 140 g of Fe/1 etching solution, whereby the copper content of the etching solution is adjusted to at least 10 g Cu per liter etching solution, while the current density in the electrolysis cell is maintained at at least 2A/dm2.
Patent DE-2851346-A1 (DE)
Inventor: GAEBLER REINHOLD
IPC: F01C1/352
Filed: 1978-11-28
Abstract: The internal combustion engine of the invention has a stationary cylindrical casing with inlet and outlet openings for fuel and air supply and for exhausting. Between two cover plates, a ring structure and a rotor enclosed thereby are arranged for rotation about different but parallel and stationary axes. The ring structure comprises a number of arcuate members between which an equal number of swinging fulcrum slides are held. Vanes extending through the fulcrum slides define an inner group of chambers between the ring structure and the rotor to whose periphery the vanes are joined by swivel bearings, and an outer group of chambers between the ring structure and the casing wall. A flow connection is provided from the outer group serving as charging and boosting chambers to the inner group in which compression, ignition and exhaustion take place. As the axes of rotation are displaced but both groups of chambers are maintained in synchronous rotation by means of a special gear, the vanes perform phase-variable, accelerated and decelerated motions; the volume of all the chambers varies accordingly. Every single chamber completes a full cycle during each revolution, and thus the engine performs a number of full cycles per revolution depending on the number of chambers in the inner and outer group.
Patent DE-2852495-A1 (DE)
Title: Metal tube ends joining system - uses metal sheath with grooves in internal surface shrunk onto outside of tubes
Inventor: VAHLBRAUK KARL HEINZ
IPC: B23P11/02
Filed: 1978-12-05
Abstract: A metal connecting sheath (3) whose ID is just less than the OD of the ends to be joined, is expanded by heating, to an ID greater than the OD of the tube ends. The ends are then pushed into the connecting sheath, and on cooling, the sheath shrinks onto the ends and produces a circular stress. The deformations caused by the diameter differences between tube ends and connecting sheath and the annular tension, are held within the elastic range of the material. Cut-outs formed in the circumference before the tube ends are pushed into the connecting sheath so that after the insertion of the tube ends and the colling procedure, the connecting sheath lies on the outer walls of the tube ends only at the wall projections which remain on the inner wall.
Patent DE-2853728-A1 (DE)
Inventor: EIDENSCHINK RUDOLF DR
IPC: C07C69/773
Filed: 1978-12-13
Abstract: Carboxylic acid esters of the formula   <IMAGE>   in which one of A or B is 1,4-disubstituted phenyl and the other is trans-1,4-disubstituted cyclohexane and R1 and R2 are independently each alkyl of 1-10 carbon atoms have liquid crystalline properties and are valuable components of liquid crystalline dielectrics.
Patent DE-2901288-A1 (DE)
Title: Calendar timepiece with rapid data correction - using coupling disc integral with setting shaft for hand positioning
Inventor: SCHMEISSER MANFRED
IPC: G04B19/25
Filed: 1979-01-13
Abstract: The data correction mechanism allows rapid correction of the date or months with less than the normal number of days. It comprises a cog (4) (12) engagement with the data ring, a coupling wheel (5), a spring loaded ratchet lever (6) and an angle lever (7). The cot (4) is positioned between a coupling disc (8) formed integrally with the setting shaft (2) for the hands and the coupling wheel (5). The cog (4) has a round hole and the coupling disc (8) has an integral four-sided section (2c) extending as far as the stop shoulder (2b) for the angle lever (7) along the setting shaft (2).
Patent DE-2911967-A1 (DE)
Title: Bath or shower cubicle partition - consists of rectangular sections sliding along rails and fitting under rim of tray or bath
Inventor: FABIAN WOLFGANG
IPC: A47K3/34
Filed: 1979-03-27
Abstract: The partition for a bath or shower cubicle incorporates a vertical, rectangular door section, the bottom edge of which fits under the rim of the shower tray or bath, when in use. The main section of the door curves outwards, or consists of a flat part and a curved piece at the bottom and at the top. The partition can be in the form of a sliding door made of horizontally movable sections along rails. The rails are partly fixed in the form of brackets to a wall running crosswise to the plane of the sliding door.
Patent DE-2913177-A1 (DE)
Inventor: ADRIAN KLAUS
IPC: D06L1/14
Filed: 1979-04-02
Abstract: Novel oxidative desizing agent consisting essentially of from 10 to 80, preferably 50 to 80% by weight of a surfactant and from 20 to 90, preferably 20 to 50% by weight of potassium persulfate. This desizing agent may optionally also contain from 5 to 25% by weight of a solubilizer with a simultaneous reduction of the surfactant and persulfate portions.
Patent DE-2914241-A1 (DE)
Title: Protective tube for insulator in electro static separator - has hyperboloid shape to permit cleaning of inside of insulator
Inventor: TULLY WILLIAM H
IPC: B03C3/36
Filed: 1979-04-09
Abstract: The protective tube protects the high-voltage insulator from dust or particle deposits and against condensed vapour. The tube has a hyperboloid shape described by x2 - y2 = z2 where x is the largest radius, z is the smallest radius and y is half the length of the tube. The min. value for z is 7.6 cm. The tube is located on the underside of the hollow cylindrical insulator. The shape allows the inside of the h.v. insulator to be cleaned whilst at the same time preventing contaminated gas flowing back and contacting with the insulator.
Patent DE-2916095-A1 (DE)
Inventor: MUGRAUER HUBERT
IPC: B01D53/04
Filed: 1979-04-20
Abstract: 1. A solvent recovery plant for solvent vapour used for fixing developed charge images in a copying or printing apparatus, comprising an adsorber, which contains a heating means and can be closed at its outlet end by a valve, and for the adsorption of a gas enriched with solvent vapour, and a condenser for liquefying the solvent vapour, characterised in that two adsorbers (AD1, AD2) are each provided with a respective heating means (HZ1, HZ2) and a respective cooling device (KS) ; that a multipath valve (MV) is provided which is connected to an input line (EL) containing a blower (GE), to a first line (L1) containing the condenser (KD) and a first valve (V1), to a second line (L2) connected to the first adsorber (AD1), and to a third line (L3) connected to the second adsorber (AD2) ; that the first line (L1) is so connected to the input line (EL) that the blower (GE) is arranged between the multipath valve (MV) and the connection point between the input line (EL) and the first line (L1) ; that at the output of the first adsorber (AD1), a second valve (V2) is arranged, and at the output of the second adsorber (AD2) a third valve (V3) is arranged ; that a cooling device (VR) is provided, having a cooling liquid container (SO) ; and that the cooling device is directly connected to the condenser (KD), whilst the cooling liquid container is connected to the cooling devices (KS) arranged in the adsorbers (AD1, AD2).
Patent DE-2916331-A1 (DE)
Title: Lamp shade for strip lighting - is made from aluminium strip with transverse tongues bent to v=shaped cross=section
Inventor: SCHUELLER NORBERT ING GRAD
IPC: B21D47/00
Filed: 1979-04-23
Abstract: The glare from strip lighting is reduced by fitting a shade with a grid below the lighting strip made in the following way. A piece of aluminium strip (1) is coated with a reflective surface and the edges are then bent upwards, then outwards and downwards to form a channel section stiffener (2, 3). Transverse slots (4a) are cut in the flat central portion and these slots run into short longitudinal slots (4b). The tongues of material (5) so formed are then bent upwards to form V section bars which limit the beam of light to an angle of 45 deg. with the horizontal.
Patent DE-2918412-A1 (DE)
Title: Flow deflector for road floor drain - comprises elliptical plate mounted at angle on rod secured in downpipe by radial ribs
IPC: E01D19/08
Filed: 1979-05-08
Abstract: The drainage system stream divider has a deflecting plate fitted at the end of a carrier rod (2). This mounts laterally protruding supports (4) for fitting agains the internal walling of the bridge drain. They may be supported on a funnel-shaped inflow pipe. The plate can be elliptical in plan shape and attached to slope against the rod longitudinal axis. The radially projecting spacers (6) are pref oval cross-section.
Patent DE-2918654-A1 (DE)
Title: Mining roof prop cap shoe - has top and bottom and intermediate trough sections in one piece
Inventor: ERDMANN HERBERT
IPC: E21D11/34
Filed: 1979-05-09
Abstract: The cap shoe is for the supporting prop of a trough section roof used in mining and tunnelling. It has a bottom part fitting round the prop and a top one acting against the arch to be supported. The bottom and top sections of the shoe and a trough-shaped portion between are in one piece, the trough-section dimensions being the same or smaller than those of the prop. On the top section there are bosses extending upwards and at 40-50 deg. to the horizontal, and each containing a bore.
Patent DE-2931165-A1 (DE)
Title: Parachute packing procedure with panels folded in sequence - has shrouds protruding in bundle, inserted in skeins as whole is folded to shape
Inventor: SCHULZ PHILIPP
IPC: B64D17/76
Filed: 1979-08-01
Abstract: The packing procedure is for chutes comprising a canopy, shrouds and suspension line, for connection after packing to (e.g.) a payload container for launching by projectile, possibly with spin. The parachute is self-opening after ejection. The canopy panels/segments, extending from crown to rim, are stretched flat and folded in sequence with shrouds extending in a bundle from the rim. The whole is then folded into a suitably sized and shaped package with the shrouds inserted in two skeins. The suspension line, looped several times, is inserted into the package leaving only the eye showing.
Patent DE-2934258-A1 (DE)
Title: Double bladed oscillating saw - has semi-circular blades operated by pneumatic actuators working in unison
Inventor: STOLL KURT DIPL ING
IPC: B27B19/00
Filed: 1979-08-24
Abstract: The saw produces a cut as smooth as that produced by a conventional circular saw but is less dangerous to handle has two semi-circular blades (28,30) mounted on a common spindle. Each blade (28) or (30) is connected by a crank (38) and connecting rod (42) to its own pneumatic actuator (44,48). The actuators are controlled by valves driven from a common motor so that the saw blades oscillate at the same frequency but in opposite directions. The teeth of each blade are set in mutually opposite ways. The mechanism is enclosed in a housing (12) with the blades projecting through a small slot.
Patent DE-2936181-A1 (DE)
Title: Tension control device for simultaneously winding multiple threads - regulates winding speed according to sum of individual thread tensions
Inventor: MAYER KLAUS
IPC: B65H77/00
Filed: 1979-09-07
Abstract: Winding head for simultaneous winding of several threads on one or more packages mounted on a single spindle has a tension control device which regulates the winding speed according to the sum of the tensions in the individual threads. Each thread passes around a separate dancing roller mounted on individual swivelling arms. A first arm is mounted in a bush affixed to the control shaft of the winding motor, the motor speed responding directly to tension variation in the first thread. The swivelling arm of a second dancing roller monitoring the tension of a second thread is mounted in a loose bush on the control shaft. The fixed bush of the first shaft carries two pins parallel to the shaft which embrace the second swivelling arm, allowing it a limited motion within pre-determined limits without affecting the motor speed. Excessive movement of the arm causes it to press against one of the pins and add its influence to that of the first arm on the fixed control bush. Device enables packages of uniform size to be wound under controlled tension, irrespective of differences in thread size or of count variation along one of the threads.
Patent DE-2943921-A1 (DE)
Title: Flexible joint shaft coupling - has flexible connectors extended from triangular intermediate member to each end of shaft
Inventor: CHIVARI ILIE
IPC: F16D3/62
Filed: 1979-10-31
Abstract: The shaft coupling permits a buckling angle between the two shafts and comprises primary and secondary coupling halves connected to the two shafts. Between the halves are flexible connectors arranged for torque transmission. Between the two halves (10,12) is at least one intermediary component (50). The flexible connectors (58,88) extend circumferentially from the first coupling half to the intermediary component and from there to the second coupling half. The intermediary component (50) is composed of at least two separate parts and connectors for each direction of rotation are directed over one of these parts.
Patent DE-2945172-A1 (DE)
Title: Measuring gas concn., esp. carbon di:oxide in mixtures - from variation in speed of sound at certain frequencies
Inventor: KRAUSE GERHARD
IPC: G01N29/024
Filed: 1979-11-08
Abstract: Method and arrangement for determining the concn. of a gas in a mixt. of gases esp. for measuring the CO2 content, takes advantage of the increase in the speed of sound in some gases, at certain frequencies. This is detected by measuring the dispersion of sound in the mixt. in a dispersion zone to establish the dispersion This is then compared with dispersion curve for the pure gas. The speeds of sound outside the dispersion zone are also measured and compared for the pure gas and the mixt. Two different frequency sound waves of known phase relation are transmitted over a measurement path contg. the mixt. and their phase angle compared at the end of the path.
Patent DE-2945444-A1 (DE)
Title: Control circuit for anti skid brakes - has balance reservoir and control valves to modulate braking
Inventor: KIRSTEIN LOTHAR ING GRAD
IPC: B60T11/18
Filed: 1979-11-10
Abstract: The control circuit for anti skid brakes has pressure reservoirs (20,21) into which surplus brake pressure is shunted when the brake force is modulated, without increasing the travel in the main brake cylinder (1). This allows the piston seals to slide past the top-up holes (4,5) without great pressure, and with less damage to the seals. The modulation is controlled by valves (35) which link the brake line to the reservoirs. The brake line is tapped between a flow restriction (34) and the wheel brakes to reduce the pressure fluctuations on master brake cylinder.
Patent DE-2951610-A1 (DE)
Title: Typewriter or office machine ink strip cassette - has associated control components housed in store ribbon intake and outlet space
Inventor: BEHRENDT WOLFGANG ING GRAD
IPC: B41J32/00
Filed: 1979-12-21
Abstract: A spool drive moves an ink ribbon through a printing position and into a storage compartment in the cassette housing, and has a drive element for coupling to a typewriter or similar office machine. The control devices working in conjunction with different varieties of ink ribbon, such as spool drive, space adjuster, end switch, blocks for secure-document typing, and others, are effectively located in the space for ribbon entry and emergence to and from the storage compartment (5) in the housing (7). This makes optimal use of storage space for various ribbons, and is easily fitted and removed, without special dexterity.
Patent DE-3001436-A1 (DE)
Title: Purificn. of aq. soln. of gas, e.g. hydrogen halide or ammonia - by desorbing excess gas, distilling azeotrope and absorbing gas in distillate
Inventor: BLJUM GRIGORIJ ZACHAROVIC
IPC: B01D19/00
Filed: 1980-01-16
Abstract: Purificn. of the aq. soln. of a gaseous material (I) from impurities involves desorption of the excess (I) present in the initial aq. soln., distn. of the remaining (azeotropic) liquid, which boils without change of compsn., and saturation of the distillate withthe desorbed (I). Desorption is carried out by heating the soln. to a temp. ensuring desorption of at least 95% of the excess (I) up to a temp. 1 deg. C below the b.pt. of the azeotropic liquid. The process is useful for purifying HF, HCl and NH3 solns. End prods. with a high degree of purity can be obtd. and the technology is simple.
Patent DE-3007564-A1 (DE)
Title: PBX with internal dialling - allows simple re-routing of calls between and within two subscriber networks
Inventor: JAEGER HORST
IPC: H04Q3/62
Filed: 1980-02-28
Abstract: When a subscriber in a second network is selected by another subscriber in the second network, an engaged signal is sent by the second network to the first network after call rerouting has been recognised. The engaged signal triggers the sending of the selection call signal from the first network and therefore the sending of the identification and the selection signal needed for call rerouting by the second network. The telephone system allows a call to be rerouted in a simple manner to a subscriber.
Patent DE-3009460-A1 (DE)
Title: Multistorey prefab. building slab assembly - involves H-shaped plugging units and T=shaped and cruciform connecting pieces
Inventor: ZIEGLER FRIEDHELM R DIPL ING
IPC: E04B1/348
Filed: 1980-03-12
Abstract: Fixture elements, spanning joint gaps, provide suspended connection for edges of prefab floor, ceiling and wall slabs used for erecting storeys of buildings. Angled connection of wall slabs involves 'T' and cross-shaped pieces. These and the walls slabs are fastened to each other, and to floor and ceiling slabs by H-shaped plugging pieces. The linked vertical shanks of these are insertable in aligned depressions in the connecting pieces and slabs. The cross shanks are in a sunken position in grooves in adjoining components. This permits construction of buildings of individual plan shape, with no unsightly packing of adjoining wall components, esp. on facades.
Patent DE-3021680-A1 (DE)
Title: Wash basin half pedestal - has releasable spring fitting for detachable fixture to basin
Inventor: MUELLER HANS
IPC: E03C1/16
Filed: 1980-06-10
Abstract: A half pedestal (12) serves to conceal connections for water supply and discharge, below a wash-basin. It is detachably retained on the basin (10) by releasable springs (24). These engage the basin in the area of the basin's fixing bolts (15,16) and engage the half pedestal in its top edge area (28), at an interval from the wall plane (13). The springs incorporate at least one tension spring with the basin fixtures hinged onto this. The springs can also have a lug (27) for engaging a cutout (28) in the pedestal and grips (26) to aid handling. The half pedestal is easily removed but fits close against the wall, with no gap.
Patent DE-3022677-A1 (DE)
Inventor: KLINGER HERWIG ING GRAD
IPC: H04B3/36
Filed: 1980-06-18
Abstract: In an overvoltage protection circuit for an amplifier inserted in series between lengths of a signal transmission line, the line including a ground path and the amplifier being supplied with operating power via the transmission line and including power supply inputs conductively connected to the transmission line lengths via a current supply filter, there is provided: one single overvoltage arrester for providing coarse overvoltage protection connected between the ground path and one of the power supply inputs, and lowpass filters connected between the arrester and each transmission line length.
Patent DE-3029351-A1 (DE)
Title: Vacuum cleaner with easily assembled fan unit - has one-piece tension hoop easily inserted to hold fan unit in place
Inventor: JUNG EKKEHARD DIPL ING
IPC: A47L9/22
Filed: 1980-08-01
Abstract: The fan unit is held in the machine casing by two tension arms (9,10) which are L-shaped, in side view, and which are connected together at one end by a transverse rod (11) to form a one-part tension hoop (8) which is fixed by the rod (11) by force or by keyed engagement to the machine casing. The arms which are connected by the rod (11) have in the area of the resilient shock absorber (7) which adjoins one end side of the blower unit projections (12) which engage in corresponding recesses (13) provided on the shock absorber (7). The arms of the tension hoop which run parallel to the axis of the fan unit (6) are held under tensile stress against the support plate (3) which is connected to the casing so as to hold the fan against it.