baber/WOPTO huggingface dataset:
Patent DE-2711957-A1 (DE)
Title: Acrylonitrile! copolymers contg. carbodiimide gps. - used in prodn. of fibres and films, are prepd. by copolymerising acrylonitrile with unsatd. carbodiimide cpds.
Inventor: BENTZ FRANCIS DR
IPC: C08F220/44
Filed: 1977-03-18
Abstract: Acrylonitrile copolymers contg. carbodiimide gps. are made contg. (a) >=65 wt. % acrylonitrile and opt. other co-polymerisable monomers which do not react with carbodiimide gps., and (b) 0.1-15wt. % of an unsatd. carbodiimide of formula R1-N=C=N-R2 (I) in copolymerised form, (where R1 is a is not >7C alkenyl gp., and R2 is an opt. branched (cyclo)aliphatic gp. which opt. contains heteroatoms). The copolymers can be formed in the usual way into films, fibres and filaments. The carbodiimide gps. in the prods. can be used for various chemical reactions. Thus with acids such as acetic acid, polymers contg. N-acylurea gps. are formed. With alcohols, O-alkylisourea gps. are formed. Reaction with dicarboxylic acids leads to crosslinking.
Patent DE-2713076-A1 (DE)
Title: Low diffraction iris diaphragm for camera objective - has aperture further reduced below min. width by linearly varying, low density optical filters introduced over aperture
Inventor: YOKOYAMA TSUNEO
IPC: G03B9/06
Filed: 1977-03-24
Abstract: The aperture plates form the diaphragm aperture and determine its variable size. The diaphragm has a device (10-14, 31-34) for linear variation of its aperture, by which the aperture plates (21-24) can be moved from a maximum aperture to a specified small aperture not producing any diffraction. when the aperture is a minimum at least two low density filters (50, 60) with linearly varying density can be swung into the aperture formed by the aperture plates (21, 24).
Patent DE-2717902-A1 (DE)
Title: High pressure engine fuel injection system - has injector pump piston hydraulically returned by differential piston
Inventor: KOEHLER WOLFGANG DR ING
IPC: F02M59/10
Filed: 1977-04-22
Abstract: The high pressure pump for an engine fuel injection system receives fuel in the usual manner from a low pressure lift pump. It then delivers the metered fuel volume to the injectors (14) via a delivery valve, a pressure pipe (7) and a differential piston cylinder arrangement (8). This arrangement has a large diameter piston (10) and a smaller piston (11). The large piston is subject to injection pump pressure and the small piston is subject to lift pump pressure via a non return valve (12). The two pistons are separate pieces able to move axially inside corresponding cylinder sleeves (21, 22) secured to the pump housing by collars (23, 24). The small piston has a spherical surface (9) in contact with the large piston. An annular gap (25, 26) is left between the respective cylinder sleeves (21, 22) and filled with fuel. The free ends of the sleeves could form annular restrictors (27, 28) with the pump housing.
Patent DE-2720293-A1 (DE)
Title: Dip soldering process immersing terminal in flux - follows with liq. solder and has container with spaced holes in upper wall corresp. to holes on screened component
Inventor: KOEPPE WOLFGANG
IPC: H05K3/34
Filed: 1977-05-05
Abstract: The dip soldering process is for electrical and electronic components and assemblies where the solder tags or pins are immersed in a solder flux and subsequently dipped in the liquid solder. Damage to the components or assemblies is prevented by protection against splashes by a screen. The container (8) of the solder bath has a wall section (1) with several holes (2). The terminal elements (3) fit through the holes and are in contact with the liquid solder (4). The number of holes correspond to the number of terminals on the electrical component (9). The spacing between the holes correspond to the spacings between the terminals. The holes are coated with an enamel layer (7).
Patent DE-2721927-A1 (DE)
Title: Skateboard with lever operated brake - has brake applied to wheels, or axles or ground
Inventor: PELL EBERHARD
IPC: A63C17/14
Filed: 1977-05-14
Abstract: The widespread use of skate boards by children has resulted in accidents, many of which are due to the skater being unable to reduce speed. Therefore a brake is fitted which can be operated by a lever. The lever, which is mounted on a pivot, has a brake shoe fixed to its lower end whilst the upper end of the lever projects through a slot in the platform of the skate board. The brake shoe may act in any one of three ways. That is, it can act on the rims of the wheels, or on the wheel axles or it can act directly on the ground.
Patent DE-2722213-A1 (DE)
Title: Heating element for domestic appliance - has tapping for fan motor with one end connected to heating wire and other fastened to insulating plate between adjacent turns
Inventor: MEYWALD KLAUS
IPC: H05B3/06
Filed: 1977-05-17
Abstract: The electrical heater is cylindrical and is intended for fan heaters, hair driers etc. It has an insulating plate, or two or more insulating plates arranged in a star, with a heating wire helically wound over their longitudinal edges. A voltage tapping is provided for the fan motor. The fan motor tapping is in the form of a conducting bar one and of which is compressed with the heating wire, while the other end is fastened to the insulating plate between two adjacent turns of the heating wire. It carries a connecting contact.
Patent DE-2723003-A1 (DE)
Title: Swarf removing lathe chuck stop - is steplessly adjustable for depth and fits any chuck
Inventor: HOERMANN ERNST
IPC: B23B31/20
Filed: 1977-04-26
Abstract: The lathe chuck stop has a steplessly adjustable depth stop for removing swarf during turn ing work. It can be fitted in each of the set of chucks used with the lathe in question, for work of different diameters, and can also be used with the chucks of existing lathes. It com prises two taper sleeves (1, 2) screwing together and locked by a hexagon nut (7) with three grubscrews. The sleeve (2) has six lengthwise slots of 21 mm allowing its expansion to grip the chuck bore, and the other sleeve (1) has a fine thread for the setting mandrel (4).
Patent DE-2724007-A1 (DE)
Title: Stop or non-return valve for fluids - has disc hub fitting round inwards protruding bushes fixed in housing
Inventor: WURZER LOTHAR DR
IPC: F16K1/22
Filed: 1977-05-27
Abstract: The butterfly-type stop- or non-return valve has a disc turning in two bushes in the housing, in or clear of the plane of the seal. There is an elastic ring on the disc acting against the seat, or alternatively elastic cladding on housing and seat. The bushes (18) are fixed in the housing and protrude inside it, and the hubs (13) of the disc (12) fit round them and form seals against them. The actuating spindle (19) can be accommodated inside one of the bushes, an annular chamber being formed between them. The end of the spindle (19a), and the socket (15) in the hub can be polygonal. The value is for use in the chemical industry or ship construction.
Patent DE-2724737-A1 (DE)
Title: Heating electrical generator rotor shaft - using conductor inserted axially through each coupling bolt to generate magnetic field
Inventor: WHITNEY EUGENE C
IPC: F02B3/06
Filed: 1977-06-01
Abstract: The electrical generator has an input shaft connected to the output shaft of a turbine using a bolted coupling. When assembling, the bolts are tensioned by heating their length. Each bolt has a hole axially through its centre and a conductor of electricl current is fitted into the hole. The conductor has a first part which is connected to a source of alternating current, this being a controlled output welding transformer. The second part of the conductor is in electrical contact with the hole sides and the resulting electrical circuit generates an inductive magnetic field which heats and bolt internally.
Patent DE-2724850-A1 (DE)
Title: Demountable opto-electronic transducer system - is attached to fibre optic light guide and carries electrical plug connections
Inventor: FALK GERHARD
IPC: H04B10/25
Filed: 1977-06-02
Abstract: A light guide (21) is covered by a protective sheath (22) and is precisely centred with respect to a transmitting or receiving transducer by means of a bush (7) in a plug-in coupling device. A further protective sheath (24) in the vicinity of the coupling device is drawn over a cylindrical projection (25) on the bush. A further cylindrical projection (27) carries a protective cap which surrounds the light guide and its two protective sheaths (22, 24). A light coupling device (23) is fixed, for example by adhesive, in the bush (7) by means of a plate (28) and an isolating tube (29). The optoelectronic transducer (21) forms a plug which has contacts for electrical connection with the remainder of the circuit.
Patent DE-2728866-A1 (DE)
Title: Sound pressure monitor in artificial mouth - has capacitor microphone coupled to digital comparator
Inventor: NIJMOLEN GERRIT WILLEM
IPC: H04R3/00
Filed: 1977-06-27
Abstract: A wobbulator (W) generates in known manner a sound frequency of, for example, 200-4, 500 Hz. The frequency varies from the upper to the lower value every 0.5 seconds. The sound frequency passes by way of a programmable amplifier (P) and a mouth amplifier (V1) to a loudspeaker (L) and an artificial mouth. From the mouth the sound passes to a microphone whose frequency response is to be tested. Simulataneously, it passes to a condenser microphone (M) to measure sound pressure. The microphone output passes via an amplifier (V2) to a device (E) which rectifies the audio signal and evaluates its maximum value, which it converts to digital form and passes it to a comparator (D) where it is compared with a reference value from a memory (R). A correction signal i is derived in a control circuit (B) and this is passed to the programmable amplifier.
Patent DE-2728878-A1 (DE)
Title: Vehicle dock hinged loading ramp - has toggle linkage to bridge plate actuated by rope attached to fixed point
Inventor: MOELLER HANS-JOERG
IPC: B65G69/28
Filed: 1977-06-27
Abstract: The hinging loading ramp pivots at one end on a fixed on, and has at the other a bridge plate to the surface of the lorry platform etc. When not in use the plate extends downwards, swinging up into the plane of the ramp for use. A toggle linkage (2) hinges at one end at a point below the hinging ramp (1), and is attached at the other below the bridge plate (3). The junction point between the two arms of the linkage is attached (4) to a rope (5), reeved round a pulley (6) mounted below the hinging ramp to a fixed point (7) below. With the bridge plate swung down, the junction point (4) is below the line (8) joining the points at which the linkage is attached (9, 10) to hinging ramp and bridge plate. When the ramp is swung right up, this point is above this line, and descends below it, again on swinging down to bring the bridge plate onto the lorry plateform (21).
Patent DE-2741630-A1 (DE)
Title: Communications system with channel sharing - allows one channel to be shared between several subscribers by employing digital techniques
Inventor: GAMMEL JOSEF DIPL ING
IPC: H04B7/155
Filed: 1977-09-15
Abstract: The communications system allows one channel to be shared between several subscribers (e.g. one radio channel). The signals are sent in digital form (e.g. PCM or PDM). Detectors at each receiver detect digital signals arriving from both directions -- and similarly at each transmitter. The normal through bidirectional path between terminals is broken when an intermediate station sends signals. The signal detectors at the receivers are designed to switch over the signal processors (regenerators, decoders etc.) to signals arriving from the opposite direction.
Patent DE-2742459-A1 (DE)
Title: Offshore platform structure - with joints between platform legs and base columns fitted with elastic shock absorption elements
Inventor: SCHALOSKE PETER
IPC: E02B17/02
Filed: 1977-09-21
Abstract: Offshore structure consists of a floating platform with legs which can be raised and lowered by hydraulic power, and a base structure, resting on the sea bed, with upright columns which have sockets on the top to receive the platform legs. The sockets have the shape of a truncated-cone funnel and their side walls are cushioned by leaf springs or other elastic material. Elastic material acts as a buffer when swell and waves causes the platform to move up and down during the lowering operation and minimises damage by violent impact.
Patent DE-2749257-A1 (DE)
Title: Switch lock with knuckle joint - which is spring loaded in top dead centre direction and has another spring pressing against it
Inventor: HOMBERG HEINZ
IPC: H01H71/58
Filed: 1977-11-03
Abstract: One lever of the knuckle joint system can be stopped at one end at the top dead centre position through a hinge. The free end of the other lever carries out the switching function. The knuckle joint system is spring loaded (16) in the top dead centre direction. The switching-on direction runs along the stretched knuckle joint system. The switching-off direction is transverse to the on direction. The spring loading (25) of the switching element (19) is stronger in the direction opposite to the switching-on direction, than that of the spring (16) pressing towards the top dead centre.
Patent DE-2749968-A1 (DE)
Title: Injection needle for moulding foamed plastics - has valve on end of long stroke piston moving inside moving cylinder
Inventor: SCHRAMMEL MORITZ
IPC: B29C44/44
Filed: 1977-11-08
Abstract: An injector needle for injecting foaming plastics into a mould has a closure valve operating by a cylinder arrangement during foaming and to eject the moulding. It has also a guide for the feed of the material (partic. according to DT 2653930). The cylinder for operating the valve is moved axially inside the guide by means of another device, partic. during the ejection process. Very simple effective design using a long stroke of the valve, with a large stroke for injection. There are no projecting parts, and servicing is easy.
Patent DE-2752470-A1 (DE)
Title: Fountain pen with removable cartridge - has grooves and ribs extending axially parallel in mouth piece and ink cartridge
Inventor: ENDRES BERNHARD
IPC: B43K8/16
Filed: 1977-11-24
Abstract: The pen has a writing tip, a shaft, and a mouth-piece, screwed to the latter. The pen and the cartridge have longitudinal grooves and/or ribs. The grooves and ribs extend axially parallel in the retainer part for the cartridge within the mouth piece (3); and in the plug section of the cartridge neck (43). During assembly, they act as an anti-torsion safety device. Grooves in the mouth piece are positioned opposite to corresponding ribs of the cartridge (4). The ribs of the mouth piece are narrower than the ribs resp. grooves of the cartridge.
Patent DE-2752866-A1 (DE)
Title: Automatic rail withdrawal and lifting mechanism - has pressure units for sleepers, and offset grabs in detachable frame
Inventor: HINZMANN KLAUS
IPC: E01B29/22
Filed: 1977-11-26
Abstract: The machine is for pulling a railway track rail and its structural ancillary material out of the sleepers, with the aid of a support appliance. Grabs (3) are provided close together and offset lengthways in a frame (1) detachably fastened to the support appliance, for raising and lowering, opening round rail and material and closing, with drive. There are pressure traverses (2) fixed to the frame, for setting on the sleepers lengthways close to the grabs. Apart from control this operates automatically.
Patent DE-2756340-A1 (DE)
Title: Corner lock for container spreader frame - has sprung pin housed in sleeve and rotatable through 90 degrees to engage corner fitting
Inventor: KESSELER ARTUR
IPC: B66C1/66
Filed: 1977-12-17
Abstract: The corner lock is used on a container spreader frame and has a pin rotated through a quarter circle for locking into a container corner fitting. The rotating pin (3) of the lock can be moved axially upwards to a limited extent against the spring force. The pin (3) is guided by a sleeve (2) on the frame. The lock has dished spring assembly (6) for damping around the sleeve. The pin itself rests against helical spring (12) which is compressed on collision.
Patent DE-2803538-A1 (DE)
Title: Video tape recorder with reversible motor - having speed change controlled by electrical and mechanical time constants to maintain synchronisation with TV signals
Inventor: STUEDEMANN BERND
IPC: H02P23/22
Filed: 1978-01-27
Abstract: The video tape recorder has the speed of its motor during direction reversal related to the sync. signals recorded longitudinally on the magnetic tape. During direction reversal the motor's change in speed is controlled by a pre-programmable reference that takes into account the mechanical and electrical time constants of that particular motor. This arrangement ensures that the motor receives the stipulated revolution values at a high degree of accuracy including during the change-of-direction phases. This prevents faulty synchronisation arising from change of direction of revolution.
Patent DE-2804588-A1 (DE)
Title: Security device for roof rack luggage - has sprung tongues which grip under roof rack, and locks at ends of cross members
Inventor: FISCHER ERNST
IPC: B60R9/055
Filed: 1978-02-03
Abstract: The roof rack load is secured on cross members comprising telescopic sections and with sprung tongues under the cross member to grip under fixed rails along each side of the car roof. The tongues are released by pulling out the inner sections, and are locked into the clamped position by releasing the inner sections. The inner section is locked in place by security locks at the ends of the cross member. The system can be fitted to lockable roof boxes, ski supports or any other roof load.
Patent DE-2808071-A1 (DE)
Title: Tuning circuit for two different varactor tuning diodes - has single potentiometer with negative logarithmic relation between output voltage and angle
Inventor: OLK GUENTHER DIPL PHYS DR RER
IPC: H03J3/18
Filed: 1978-02-24
Abstract: The tuning circuit, for radio receivers, tunes, a first varactor with CV-characteristics for the AM band and a second varactor with CV-characteristics for the FM band. The circuit has only one potentiometer. This rotary potentiometer has negative logarithmic relation between output voltage and the angle at which the potentiometer is set. For the second varactor the potentiometer's direction of rotation and the order of its connections are reversed. The potentiometer is in series with a fixed resistor. The advantage lies in needing only one potentiometer with a scale for both varactors that is as uniform as possible.
Patent DE-2810181-A1 (DE)
Title: Multiple wire compression coil spring - has wires on inside of larger diameter to resist shock loading
Inventor: ROEHRS WERNER DR
IPC: F16F1/04
Filed: 1978-03-09
Abstract: The multiple-wire compression coil spring comprises laminated flexible wires. The inner wires of the laminations are of larger diameter than the outer ones. The spring is particularly for use in machine-guns, giving long life under heavy shock-loads.
Patent DE-2817687-A1 (DE)
Title: Mixer for polyurethane components - has chamber with stirrer which is removed when split housing is opened
Inventor: SCHNEIDER FRITZ W
IPC: B29B7/76
Filed: 1978-04-22
Abstract: The mixer has a cylindrical chamber with moving ram. The constituents return to storage via two grooves when the mixer is closed. A central stirrer is in a lower chamber. Supplementary resin additives enter via an inlet. When the constituents enter the chamber and mix, they flow into the lower space, are further mixed by the stirrer, and flow into a mould. The ram moves back, preventing further feed or reagents, and the two housing parts are opened. At the same time the stirrer and shaft are removed with the bottom tool. Residual resin remains hanging on the stirrer or in the chamber is removed as one complete shaped piece. Always produces uniform mixt., stirrer is readily removed after each mixing cycle.
Patent DE-2822075-A1 (DE)
Title: Water-insoluble aluminium silicate used in leather mfr. - contain alkali-, di:- and tri:valent ions and have coarser particle size
Inventor: PLAPPER JUERGEN DIPL CHEM DR
IPC: C14C1/08
Filed: 1978-05-20
Abstract: Parent patent discloses the use of a water-insol., esp. water-contg. Al silicate, having formula (Cat2/nO)x.Al2O3. (SiO2)y (I) (where Cat is an alkali metal ion, esp. Na; x is 0.7-1.5; y is 0.8-6 esp. 1.3-4), particle size 0.1-25 mu and C a bonding capacity 20-200 mg CaO/g anhydrous active substance, in leather mfr. According to present modification, the alkali metal ion in Cat is partly replaced by di- and/or tri-valent cations; n is 1-3 and particle size is 0.1 to 5 mm, esp. 25-100 mu or 0.1-5 mm for tanning. (I) can replace water-polluting chemicals in degreasing and pre-tanning unhaired pickle hides, tanning and neutralising pelts and leather. Coarser particles are removed more easily from waste waters, by sedimentation or filtration. Slower acid bonding with coarse particles is advantageous in Cr tanning.
Patent DE-2824728-A1 (DE)
Title: Non-uniform gear drive for IC engine crankshaft - ensures correct transmission ratio for high thermal efficiency by regulating dwell periods
Inventor: BAECHLE DIETER
IPC: F16H35/02
Filed: 1978-06-06
Abstract: The gear drive with a nonuniform transmission ratio is used for continuous transformation of angular velocity. This drive reduces thermal losses in engines by ensuring that the dwell of hot combustion gas is reduced in favour of the fresh fuel mixture. The engaging gear wheels are not necessarily closed curves in a single plane. The gear wheels may have teeth ensuring a cyclically varying transmission ratio. The helical systems can be arranged to produce the most efficient dwell period for the machine drive.
Patent DE-2825306-A1 (DE)
Title: Carbon mon:oxide detoxification system esp. for vehicle exhaust - has carbon filter impregnated with metal oxide catalysts for oxidn. to carbon di:oxide
Inventor: LITSCHEL ELSE
IPC: F01N13/02
Filed: 1978-06-09
Abstract: CO detoxification system with a carbon filter, esp. for plants emitting waste gases to the environment, is impregnated with >=2 catalysts and converts CO to CO2. Catalysts are Fe2O3 and CdO, CuO, ZnO, NiO, SnO2 and the oxides of Mn, Ti, Ag, Co and Cr. The system is specified for use in the exhaust system of vehicle engines. It can be incorporated in the exhaust easily, without great expense. The system can be reactivated by supplying steam to the exhaust, whilst the CO2 can be pptd. by passing the exhaust emission through soda or Ba(CH)2 soln.
Patent DE-2830799-A1 (DE)
Title: Plastics fuel line connector for vehicle - uses self-locking action of U=shaped leaf spring secured to connector by gland for retention on fixed tube
Inventor: BRUNNHOFER ERWIN
IPC: B60K15/01
Filed: 1978-07-13
Abstract: The connection between the plastics hose (1), particularly a fuel line in motor vehicle, to a fixed tube (3) comprises a plastics connector (2) with a socket end (4) to which the hose is welded, and a connector end (5) with retainers (6) for the tube. The end has a housing (7) contg. a seal ring (8) and a gland (9) with a bore (10), flange (13) and collar (11). The retainers are self-locking and consist of a leaf spring with an opening (17) for the tube. The gland retains the seal and the spring with its collar and flange. The spring is U-shaped, one end (14) with an opening (15) being retained by the flange, the other end (16) contg. the opening.