baber/WOPTO huggingface dataset:
Patent DE-2636871-A1 (DE)
Title: Central testing of telephone PBX - uses replacement of extension meter by test element
Inventor: SCHMITZ RICHARD
IPC: H04M3/24
Filed: 1976-08-17
Abstract: The testing concerns mainly those transmission paths and control elements or control processes which serve for transmission of charge pulses to subscriber meters. The registered meter state caused by processing of test pulses is followed by an acknowledgement signal transmitted to the testing station. When an exchange translation is engaged from the exchange side in connection with test pulses from the testing station (WZ), receivers (E, GI) in the respective exchange line process them, and a switching criterion (3st, gi) releasing a first acknowledgement is derived. Depending on this criterion and after finding the meter belonging to the required extension, a test element (P) is connected to the meter and replaces it. It transmits a further acknowledgement signal.
Patent DE-2638780-A1 (DE)
Title: Shell-type magnetic core for transformer or induction coil - is built entirely of L-shaped laminations
Inventor: OLSCHEWSKI DIETER
IPC: H01F41/02
Filed: 1976-08-27
Abstract: Laminations forming the yoke, and outer part of the magnet are U or E-shaped and made in one piece. The rest is assembled from L-shaped laminations. The l-laminations interlock with each other and with the parts of the yoke. The air-gap is adjustable without waste of material.
Patent DE-2640551-A1 (DE)
Title: Frequency selective echo suppressor - has amplifiers in sender circuit controlled by rectifiers in receiving circuit and followed by further band-pass filters
Inventor: QUAISER WOLFGANG DIPL ING
IPC: H04B3/21
Filed: 1976-09-09
Abstract: The echo suppressor has a set of filters with n band-pass filters in sending and receiving circuits for division of the telephone band in n parts. A rectifier is provided after each band-pass filter in the receiver filter set in order to generate control DC voltages from each speech signal of the distant subscriber. Each DC control voltage controls a control amplifier behind each band-pass filter in the sender side filter set, for selective insertion of attenuations into the sending circuit. The rectifiers cause a frequency doubling of speech AC voltages superposed on the control DC voltage. In order to filter out these higher frequencies a band-pass filter is inserted after each of the n control amplifiers. They form a third filter set identical with the first on the sender side.
Patent DE-2642172-A1 (DE)
Title: Car type condition monitors - have pressure and temp. sensors interacting with control circuit to give dashboard defects warning
Inventor: BIESTERFELDT HARALD
IPC: B60C23/04
Filed: 1976-09-20
Abstract: The tyre is fitted with pressure and temp. monitors spaced about the wheel rim. As the pressure and/or temp. moves beyond and set value the monitors extend control shafts whose displacement is monitored by sensors mounted on the fixed part of the vehicle. The system gives the driver an early dashboard warning of any defects in the tyres so that accidents can be prevented.
Patent DE-2646835-A1 (DE)
Title: Flameproofing polyamide moulding batches with red phosphorus - encapsulated in organic or inorganic microcapsules having high softening point
Inventor: TACKE PETER DIPL CHEM DR
IPC: C08K9/10
Filed: 1976-10-16
Abstract: Flameproof polyamide moulding batches contain, as flameproofing agent, 0.3-20wt.% powdered red P, encapsulated in microcapsules of (in)organic material having softening point >=260 degrees C. The capsule walls pref. consist of reaction prods. of aromatic bis-hydroxy cpds. and cyanuric halides, e.g., crosslinked reaction prods. of bisphenols and cyanuric halides; a melamine-HCHO resin; SiO2, silicates, alkaline earth metal oxides, Ti- or Al-oxides. Compsns. can be used for prodn. of injection-moulded articles, esp. electrical equipment. Microencapsulation prevents reaction of P and polyamide to form toxic P-H cpds. during processing. E.g., encapsulated red P can be stirred >2 hrs. in molten polyamide-6, or -6,6 at 260-290 degrees C without phosphine formation.
Patent DE-2654732-A1 (DE)
Title: Long term underground heat collector vessel - is enclosed by insulating ring with embedded heat exchange elements
Inventor: MICHEL ADOLF H
IPC: F28D20/02
Filed: 1976-12-02
Abstract: The long term heating system uses a collector tank which can be buried underground, with a heat shield around it, kept at a low temperature by a heat pump, Peltier elements, etc., so that heat can be extracted. A container (10) for the heat exchange fluid (11) has an insulating layer (12) around it, in which can be embedded liquid circulation tubes (14) for the heat pump. The tubes can be connected by an external wire grid (16). In an alternative design, the outer shell is divided into sections and itself conducts heat to the distributor tubes. The design can be adapted to form a vertical heat exchanger built into the centre of a house, and can be used to store solar heat. The outer layer of this tank is ribbed externally.
Patent DE-2706083-A1 (DE)
Title: Shelving frame formed of bars - has square joint bars with staggered blind holes receiving round support bars
Inventor: HARTMANN FRIEDRICH
IPC: A47B47/00
Filed: 1977-02-12
Abstract: The demountable and extendable shelving framework uses bars of round and square section. The bars of round section (2) forms both longerons and vertical members and dowel into the bars of square section (1) which form the framework joints. Blind holes (7, 8) are provided in the square bars (1) to house the ends of the round section bars (2). The holes are provided at regular longitudinal intervals on each face of the square bar and may penetrate for four fifths of the depth of the bar. The pitch of the holes is equal to member perimeter, and the holes on any individual face are staggered longitudinally relative to those on other faces. The specific location of the holes is such that no holes meet.
Patent DE-2717941-A1 (DE)
Title: Impact energy absorbing steering wheel - has rim segment spokes joined to neighbouring spokes by collapsible clamp
Inventor: SCHAPER DIETER DIPL ING
IPC: B62D1/11
Filed: 1977-04-22
Abstract: The steering wheel rim consists of four identical segments (6-9) manufactured of either a tube, wire, metal strips or a suitable plastics. Each segment has to legs (10, 11) which together with the legs of the neighbouring segments, form the steering wheel spokes. The spoke ends are fixed to the steering wheel hub (16) which has deformable properties. The hollow space (17) between the four rim segments and the hub can be used to contain an impact absorbing cushion. The rim segment spokes are joined to their neighbouring spokes by clamps (20). The clamps are designed to collapse when subjected to a predetermined strain. The distance between the steering wheel rim and hub is equal to or greater than the rim radius.
Patent DE-2718496-A1 (DE)
Title: Room-dividing cupboard with changeable front - has several units swivel-mounted in one structure for easy selection
Inventor: OEHLSCHLAEGER GUENTER
IPC: A47B49/00
Filed: 1977-04-26
Abstract: The multi-purpose cupboard is provided with two different front sides with one or more prismatic cupboard units (2) which can be rotated about vertical centre axes to allow the cupboard to be used as a room divider and to allow the front of the cupboard to be changed to the required room use. The cupboard units are pref. mounted side by side in a row in a common structural surround. Each unit (2) has at least two spaces (21, 22, 23, 24) set side by side on the same level and which are either open on the sides remote from the rotary axes or are designed to be closed by doors, flaps etc.
Patent DE-2732334-A1 (DE)
Title: Tensile structural members with serrated scarfed joint - esp. for built=up pressure vessels designed for subsequent demolition
Inventor: KLOSKA GEORG DIPL ING
IPC: F16B3/00
Filed: 1977-07-16
Abstract: Assembly for joining together components subject to tensile force, without any increase in the cross-section at the joint, consists of forming sawtooth edges of complementary shape at the joint surface, the general line of the joint is oblique to the direction of tensile force, each tooth is perpendicular to this direction and loosely fits between opposed teeth, while the angle between the tooth flank and the line of force is 90 degrees. The spacing between is at least twice the tooth height. Used for any tensile joint, more specifically fro joining together bands in the compsn. of multi-layer vessels, partic. pressure vessels. One partic. application is in nuclear pressure vessels which must be dismantled after their useful life and broken up into relatively small components for disposal. The joint is easily disconnected, whereupon a long strip of metal canbe removed. The cross-section of the joint is not in any way increased in size, as with a weld, nor is there a redn. factor in tensile strength.
Patent DE-2752306-A1 (DE)
Title: Magnet incorporating game of skill - involves moving two magnets along defined path on game board so that one magnet draws other after it
IPC: A63F9/00
Filed: 1977-11-23
Abstract: A game of skill is played with two magnets (6)(7) moving on a board. The board is divided into two playing zones (2)(2'). One zone (2) is divided into two areas (4)(5) and a curved band. Each area (4) (5) and the central strip (3) of the bankd is covered with a layer of electrically conducting materials. The magnet (6) has an electrically insulated undersurface whilst the magnet (7) is electrically conducting. The magnet (6) is moved along the line (3) and draws the magnet (7) after it. If the magnet (7) moves off the line (3) it makes an electrical connection with the surface (4) or (5) and switches on the light (8) or (9). The other playing zone (2') requires less skill since only the electrically conducting magnet (6') is used.
Patent DE-2753679-A1 (DE)
Title: Stable aq. washing and cleaning compsn. - contains catalase, anionic surfactant and nonionic polygonal ether deriv. surfactant
Inventor: PFEIFFER HANS F DIPL CHEM DR
IPC: C11D3/386
Filed: 1977-12-02
Abstract: Stable, liq., catalase-contg. enzyme compsn., present as an aq. soln. or suspension, by wt. (A) 0.5-10 (1-5) % of >=1 water-soluble anionic surfactant consisting of a sulphonate and/or sulphate as an alkali metal-, ammonium or organic ammonium salt, (B) 2-50 (5-20) % of >=1 nonionic polygolcol ether deriv. surfactant and (C) a catalase quantity such that compsn. activity is 500-500000 (30000-300000) international unit U/ml. Wt. ratio (A):(B) is 1:1 to 1:100 (1:2 to 1:20). The compsns. can be used (1) for washing and cleansing, and partic. in dry-cleaning, simultaneously with a pre-cpd. bleaching process, to prevent damage by uncontrolled O-attack, and (ii) in polymer foam prepn. using peroxide-released O2 as propellant gas. The compsns. have high storage-stability, i.e. catalase activity is fully retained several weeks or months at 30 degrees C.
Patent DE-2754345-A1 (DE)
Title: Continuous measurement of carbon content, esp. in molten metals - where carbon converts fast neutrons to thermal neutrons
Inventor: PFEIFFER ROLAND DIPL PHYS DR
IPC: G01N23/02
Filed: 1977-12-07
Abstract: A defined cross-section of the metal, or other substance, is exposed to a source of fast neutrons (FAN), which are converted by the carbon content to thermal neutrons (THN); and the resulting flux of THN is measured by suitable appts. The FAN flux is pref. 104-106/sec., esp. 105/sec. and constant w.r.t. time. The appts. is pref. calibrated according to the % carbon in the substance, e.g. molten iron; and the pref. appts. includes a BF3 counter for the THN. Used e.g. during the mfr. of steel in a converter, esp. for automatic control of the process.
Patent DE-2804109-A1 (DE)
Title: Duplexer for circular single and double polarisation - has phase symmetrical polarisation splitter, S=shaped connection waveguides and single directional coupler
Inventor: SCHUEGRAF EBERHARD DIPL ING
IPC: H01P1/213
Filed: 1978-01-31
Abstract: The transmitting-receiving duplexer provides simple and double polarisation in each of two h.f. bands of different frequency positioning. The system may be used as a direction finding wave duplexer. A capacitive end-on (longitudinal) probe is used to integrate a E01 d.f. mode duplexer into the polarisation duplexer. One pair of opposite facing polarisation duplexer split arms are connected via symmetrically designed E-pieces, and the other pair of split-arms via two symmetrically arranged H-bends to the split-arms of the series branches. The compensation hollow waveguide and the twisted hollow waveguide section are joined to one 3dB directional coupler via mutually symmetrical s-shaped junction hollow waveguides. The directional coupler consists of two rectangular hollow waveguides each with one wide-side lying against one another.
Patent DE-2804499-A1 (DE)
Title: Electromechanical filter with parallel bars and coupling wire - has torsion resonator bar with two constrictions symmetrically positioned w.r.t. centre
Inventor: TRAUB KARL
IPC: H03H9/50
Filed: 1978-02-02
Abstract: The electrochemical filter consists of parallel bender and torsion resonator bars, electrostrictive transducers, a coupling wire and at least one additional coupling element providing an attenuation pole. The torsion bars are formed as dumb-bells each with two constrictions (41.42). The constrictions are located symmetrically about the centre. The distance (A) between the centres of the constrictions lies between 0.58 and 0.67 times the overall length (L) of the bar. The advantage lies in reducing the effects of production tolerance on effective mass and resonant frequency.
Patent DE-2810748-A1 (DE)
Title: Artificial knee joint with shafts for fitting into thigh and leg bones - has hinge link with pref. polyethylene guide box and pressure ring
Inventor: KOMOSSA WERNER
IPC: A61F2/38
Filed: 1978-03-13
Abstract: Prosthetic joint comprises a first joint component with shaft for fitting into a bone and a second joint component with shaft for fitting into another bone; both components being swivably linked together. One of the components and its associated shaft are connected via a hinge link in such a way that the shaft turns about its longitudinal axis w.r.t. the joint component whilst overcoming the pre-tension of a spring element. The rotation prostheses is used e.g. as a knee joint to enable a wearer to perform movements of which a natural knee is capable. Pref. the hinge link has a guide box of polyethylene (-type material), and also a pressure ring of similar material. The hinge link constitutes part of a knee joint prosthesis whose femural and leg parts are fitted in the marrow cavity of their natural counter-parts; the hinge link connecting leg part with prosthetic leg shaft.
Patent DE-2811835-A1 (DE)
Title: Electrostatic copier heat fixing - uses heat exchanger to recirculate warm air from fixed copy to pre-fixing chamber
Inventor: TLUCK WOLFGANG V DIPL ING
IPC: G03G15/20
Filed: 1978-03-17
Abstract: Heat fixing unit is for an electrostatic copier. Heat from fixed copies is recirculated to warm copy material prior to fixing and effect a size reduction and heat saving in the equipment. The copy material (1) coming out of the fixing unit (2) is fed into a heat exchanger (6) so that a current of air can carry the warm air through a pipe system (4a) to the first heat exchanger (7) to warm incoming copy material.
Patent DE-2814870-A1 (DE)
Title: Connections for steel and concrete structures - consist of sets of sockets into which fitments containing expansion piece are inserted
Inventor: FROMONT MICHEL MARIE VICTOR CA
IPC: E04C3/36
Filed: 1978-04-06
Abstract: The connections for structures consist of sets of sockets going right through the structures. The sockets are the same shape for all the structures so that the various sets of sockets can be aligned. Fitments are inserted into each alignment. Each fitment consists of an expansion piece which locks the fitments inside the sockets, at right angles to the contact surfaces between the structures. The expansion pieces consists of sprung steel, flexible pins, with a central cavity inside and divided along a generatrix. The structures are reinforced with metal shuttering the other surface of which is touched by the pins.
Patent DE-2815407-A1 (DE)
Title: Welding jig for clamping and rotating workpieces - which can be rotated on two mutually perpendicular axes to improve ergonomics
Inventor: SEVERT WILHELM
IPC: B23K37/04
Filed: 1978-04-10
Abstract: The jig includes a pillar fitted with a horizontal pivot shaft driven by a motor to rotate a jib (a) on a horizontal axis; and jib (a) can pref. be adjusted radially w.r.t. that axis. On the free end of jib (a) is a second motor employed to rotate a clamping plate fitted with rows of holes via which clamping tools can hold a workpiece. In an alternative pref. design, two pillars are used to support a horizontal beam rotated on its axis by one motor; and the beam carries a turntable rotated by a second motor and fitted with a clamping plate for holding workpieces. The clamped workpieces can be moved in a desired path or to a desired position, esp. for welding operations, so the human welder has an easier and safer task.
Patent DE-2824158-A1 (DE)
Title: Hinged front and hind legs of rocking horse - produce forward movement due to weight transfer and are pulled together by spring
Inventor: BADOCCHI NINO
IPC: A63G19/12
Filed: 1978-06-02
Abstract: A rocking horse has scissor type levers (6, 10) which form the two pairs of legs. Their extensions above the pivot point (12) carry the saddle (8) and the handle bar (13). Each pair of legs is provided with its own set of curved base rails (1, 3). An adjustable tension spring (14), attached to the legs below the pivot (12), tends to move the front and hind legs together. With a person in the saddle (8), the rocking horse can be made to move forward by shifting the weight from the front rails (1) to the back rails (3) and back again. As the weight is applied on the saddle or the handle bar, the tension spring (14) is stretched and thus the rails move forward step by step.
Patent DE-2824558-A1 (DE)
Title: Prepn. of 12-di:hydroxy-cyclobutene-3,4-di:one - by reacting hexa:chloro-cyclobutene with oleum
Inventor: MAAHS GUENTHER DR
IPC: C07C45/27
Filed: 1978-06-05
Abstract: Prepn. of 1,2-dihydroxycyclobutene-3,4-dione (I) is carried out by heating hexachlorocyclobutene (II) with a mixt. of anhydrous H2SO4 and SO3 at 60-120 degrees C (pref. 75-95 degrees C) and then hydrolysing the reaction mixt. The (II):SO3 molar ratio is 0.35-0.6:1 (pref. 0.45-0.55:1) and the H2SO4:SO3 molar ratio is 0.1-1-10:1 (pref. 0.3-2:1). (I) is useful as intermediate for stabilisers, dyes, bactericides and fungicides. The process gives high yields (e.g. 80-97%) in short reaction times, even when the starting material contains large amts. of hexachloro-1,3-butadiene (III) (cf. DS 2623836).
Patent DE-2828503-A1 (DE)
Title: Mounting for car seat - has two shells with interacting swivel plates and sprung securing ratchet
Inventor: GOELDNER WALTHER ING GRAD
IPC: B60N2/14
Filed: 1978-06-29
Abstract: The swivel mounting for the car seat has two simple shells with a larger shell (1) bolted to the floor and forming the bearing surface for the upper shell which supports the seat. The two shells run over each other on raised lips and are joined by a central pivot bolt. A ratchet pattern (37) in the side of the pivotted shell allows the seat to be secured in different angles. The system provides a simple support for a swivel seat, for improved access for disabled persons. The metal pressings are shallow and can accommodate wide tolerances.
Patent DE-2833145-A1 (DE)
Title: Horizontal boring-milling machine tool - has fully rotatable workpiece holder with inclined axis for access to five faces
Inventor: EWERTOWSKI NORBERT ING GRAD
IPC: B23Q1/54
Filed: 1978-07-28
Abstract: The machine has a spindle (1a) mounted in the headstock (2) of the frame provided with guide surfaces (4) and cross slide operates on horizontal guide surfaces (7, 8). On top of the headstock the tool magazine (13) and tool gripping element (14) is mounted to carry out the automatic tool change for the working spindle. A swivelling housing (30) rotates on an axis (26) at 45 degrees to the horizontal. When the work holder is swung into the upper position the clamping surface of the holder is vertical. By swinging the holder into the lower position the clamping surface is horizontal, to allow machining of the four vertical sides of the work.
Patent DE-2833405-A1 (DE)
Title: Redox-potential meter circuit - has measuring electrode and electrode head carrying reference electrode and has measuring transducer
Inventor: EIBL VOLKER DIPL ING
IPC: G01N27/416
Filed: 1978-07-29
Abstract: The redox potential meter has an indicator (29) connected to its measuring transducer (27). Spaced from and in a fixed position relative to the measuring electrode (7), an additional electrode (19) electrically insulated from the measuring electrode is attached to the electrode head. Connected to the measuring and additional electrodes is a control (33) responding to changes in the electrical conductance or electrical resistance between these electrodes.
Patent DE-2833633-A1 (DE)
Title: Plastics double casement window frame - made by welding together simultaneously cut pvc profiles, with positioning profiles temporarily fitted into longitudinal grooves
Inventor: HEINRICH KLAUS DIPL ING
IPC: E06B3/26
Filed: 1978-07-31
Abstract: Double casement window comprises two frames, one behind the other and made by simultaneous cutting and/or welding together of unplasticised-PVC hollow profiles. Opposite surfaces of profiles of both frames have longitudinal grooves in which a connecting and positioning profile is arranged during assembly. When mfr. is by welding then this connecting profile can be longitudinally displaced and is shorter than the frame profile by at least twice the width of the weld bead formed. After assembly, sealing profiles are fitted to the grooves. The connecting profile (which is subsequently removed) is composed of one piece or several sections.
Patent DE-2849603-A1 (DE)
Title: Substrate etching system - reciprocating rack carrying substrates in vertical position in etchant tank
Inventor: RAMGRABER EGON
IPC: C23F1/08
Filed: 1978-11-15
Abstract: In the chemical surface treatment of substrates (etching of semiconductor devices) the substrates are mounted in a vertical position at a distance from each other in a rack. This rack is kept in a controlled motion inside a tank with the etchant and is preferably reciprocated with a stroke of 20-80% of the length of each substrate. Process eliminates under etching and achieves very uniform etching results. It is ideal for treating large numbers in mass production.
Patent DE-2850454-A1 (DE)
Title: Ski trouser leg closure device - has friction adhesive tapes of complementary type disposed on heel part of shoe and inner face of trouser leg end
IPC: A41D1/08
Filed: 1978-11-21
Abstract: Ski trouser leg closure device includes a slide clasp fastener extending down to a strap which is provided jointly with the inner side of the inner side of the lower part of the trouser leg with a friction closing strip, respectively. Friction strip co-operates with an underlying complementary strip, either of the hook or the loop type. The strips are pref. arranged around the heel region to provide a quickly releasable closure which is effective despite stressing induced by body movements.