baber/WOPTO huggingface dataset:
Patent DE-2831401-A1 (DE)
Title: Electroacoustic transducer for telephone handset - has piezoelectric plate resonance and mouthpiece resonance fixed by suitable dimensioning to give cut=off above voice frequency range
Inventor: WALLISER KONRAD DR ING
IPC: H04R1/22
Filed: 1978-07-17
Abstract: The electroacoustic transducer has the resonant frequency of the cavity in front of its membrane-like piezoelectric plate and the oscillations of the plate itself determined by an appropriate choice of the number and length of the mouthpiece apertures, the thickness of the plate and the vol. between mouthpiece and plate so that the frequency and the oscillations lie at the upper limit of the frequency band of relevance to telephony (200-4000Hz). Above this upper frequency limit a low pass filtering effect is achieved. The resonant frequency of the mouthpiece region is c. 2.5 kHz when the number of holes is c. 17, their length c. 3mm and their dia. 3 mm. The plate's oscillation frequency is c. 3.4 kHz, its thickness 150 microns and dia. 43 mm.
Patent DE-2831696-A1 (DE)
Title: Insulating glazing for greenhouses and plant conservatories - is multi-ply laminate fitted in profiled frames
IPC: A01G9/14
Filed: 1978-07-19
Abstract: Glazing for greenhouses comprises laminated insulating glass panes which bear with their longitudinal edges upon the arms of T-shaped, 'U'-cross-sectioned carriers and profiled bars fastened to these. the outsides of the edges of the panes are covered by sealing trims held in place by the profiled bars. The lower, horizontal edges of the glass panes are embedded with the aid of a permanently elastic sealant, in a 'U'-channel of a carrier and holding bar which engages the 'U'-cross-sectioned carrier with a hook-shaped rib at the inner leg of channel and has a covering rib extending over the upper horizontal edge of the adjacent glass pane. The sealant is suitably made of a 2-component, solvent-free, polysulphite-rubber compsn.
Patent DE-2834566-A1 (DE)
Title: Braces clip - allows trouser waistband to be inserted and gripped by toothed bar without altering waistband
Inventor: HIRSCHBUEHL ALOIS
IPC: A41F3/02
Filed: 1978-08-07
Abstract: At the rear side of the clamping pad base, two spaced side blades for the waist band to pass through, with a pivoting linkage for a toothed bar are provided. This is attached to an angled lever plate so that the toothed bar can pass through a top dead centre position to press against the waistband. The waistband to be attached to braces, without alternation. The braces can be of various patterns, while the clips themselves can be decorative. Pref. there is a sprung bulged bar on the clamp pad base spread out through the arm bar of the clamping pad on pivoting, with the reverse side of the bulge lying opposite the engaging point of the toothed bar at the waistband.
Patent DE-2835608-A1 (DE)
Title: Electronic pulse-width modulation system - has feedback via input transformer with two secondaries
Inventor: FRIEDL RICHARD DR ING
IPC: G01R21/127
Filed: 1978-08-14
Abstract: An electronic pulse modulator has feedback via an input current transformer. It is used esp. for multiplies switch networks in static electricity meters. The input current transformer has a single primary and two secondaries, each secondary being connected to an amplifer. The first secondary is connected to the inverting input of a differential amplifier while the second secondary is connected via a resistor to the output of a differential amplifier, and constitutes the transformer feedback. Both amplifiers have feedback circuits consisting of a resistor and capacitor in parallel.
Patent DE-2838199-A1 (DE)
Title: Single-axle trailer with modified steering - has deflection of drawbar operating cable drive to steering rod moving wheels
Inventor: BOHNY SIEGFRIED
IPC: B62D13/04
Filed: 1978-09-01
Abstract: The single axled agricultural trailer has its wheels steered by a transverse steering rod (12) which is linked to a steering bar (9) driven by a cable drive. The other end of the cable is looped over a control wheel (5) on the drawbar coupling so that the wheels turn in the opposite direction to the drawbar. The system enables the trailer to be towed in confined spaces, such as a long crop rows. The trailer tracks more accurately behind the tractor so that it does not drag into corners.
Patent DE-2843849-A1 (DE)
Title: Surveillance system for open space - has several sensors coupled to signal correlation unit generating overall field condition pattern
Inventor: RODE ERNST-D
IPC: G08B13/26
Filed: 1978-10-07
Abstract: A surveillance system for open spaces uses a number of sensors coupled to an evaluating controller to indicate the presence of an intruder. The sensors (S1-SN) operate together with LC stages on the so-called duplex principle. The oscillator output voltages are fed to a first evaluation stage (A1) that provides interrogation of the voltage to a time base. This allows a specific profile to be established that allows a correlation check (A2) with all sensor outputs. The determined standard profile is comapared with the primary (A3) and further stages (A4, A5) allow an alarm to be initiated if a sensor is triggered.
Patent DE-2845578-A1 (DE)
Title: Corner strips fixture for corner fillet - comprises sectional member fitting cut=outs in strips, bolted to swivel plate fitting T-grooves in fillet
Inventor: SIMON PETER
IPC: F16B12/32
Filed: 1978-10-19
Abstract: The arrangement is for securing two strips (17, 18) with T-section cut-outs to a corner fillet (10) having T-section inner grooves (22, 23) at an angle to one another. A sectional member (11) has a central web (12) and two lateral flanges (13, 14) with hooked portions (15, 16) which engage the cut-outs. The web has a bore (19) for a screw bolt screwed into (20) a locking plate (21). On assembly, the plate is swivelled in position to engage the groove and, when the bolt is tightened, the plate grips behind the edges (24, 25) and against the sides of the grooves.
Patent DE-2847032-A1 (DE)
Title: Articulated cross-country vehicle rolling joint - is for axle suspension and fitted with infinitely adjustable hydraulic damping device
Inventor: ERTL HERBERT ING GRAD
IPC: B60G7/00
Filed: 1978-10-28
Abstract: Each half axle joint is fitted with a damping device (10) which comprises working together with the rolling joint (10) which comprises a hydraulic cylinder (14) with both-ended piston rods (13) and piston (16) dividing the cylinder space into equal volume chambers (19, 19a). The two chambers are interconnected by a bypass pipe (18) fitted with hand operated control valve (17) with adjustable spring pressure. The cylinder is fitted to the vehicle frame by a swivelling joint (15) and one end of the piston rod is joited to an arm (11) fitted to the hollow rolling joint. During normal travel the valve is fully open and the hydraulic fluid freely circulates between the two chambers in accordance with the swinging motions of the half axles. If it becoms necessary to fix the half axle in a certain position, the valve is closed by hand preventing fluid circulation and resulting in a rigid position of the half axle.
Patent DE-2847446-A1 (DE)
Title: Sound box with two in=phase bass loudspeakers - are at front and back to increase bass sound level relative to higher frequency sounds
Inventor: FAESECKE ERIC
IPC: H04R1/22
Filed: 1978-11-02
Abstract: The loudspeaker box (10) has two bass loudspeakers (20, 30), one fixed to the front and the other to the rear of the box. Each bass loudspeaker has a magnet, a conical membrane and a chassis. This enables the box radiating bass sound to the same extent as higher frequency sound. The two loudspeakers are in phase so that the volume of bass sound is effectively doubled compared to a box with only one bass loudspeaker. The front (17) and the rear (18) wall each have a sound outlet opening (15, 19).
Patent DE-2850722-A1 (DE)
Title: Electric heater, esp. immersion heater for corrosive liq. - has lead with fluoro-plastics insulation, coaxial wire braid and impermeable fluoro-plastics cover
Inventor: BOIX DIETER
IPC: H05B3/56
Filed: 1978-11-23
Abstract: Electric heating element of the coaxial type with protected leads for aggressive media has fluorinated plastics insulation around the lead, which is covered with wire braid, coaxial with the lead, and then made resistant to diffusion by an outer cover of fluoro-(thermo)plastics. Pref. the insulation is over 50 (80)% covered by the braid and is min. 0.7 mm thick, whilst the outer covering is min. 1 mm thick. The intermediate insulation consists of PTFE and the outer covering of perfluoroalkoxy plastics (which can be applied by extrusion). The element is useful as immersion heater for corrosive liquids. Specifically, a power of 100-200 W/m length can be attained and the bending radius is minimised (ca. 20 times the outside dia. of the cable).
Patent DE-2851497-A1 (DE)
Title: Colour CRT reproduction convergence error measurement - using mutually adjustable optical plates forming independent test images for fluorescent material groups
Inventor: RUTH LINUS CHESTER
IPC: G01R31/25
Filed: 1978-11-28
Abstract: A measuring device is for c.r.t. reproduction errors, is esp. for colour tubes since it is designed for conveyance error measurements in tubes having two fluorescent substances of different colours combined in one substance, each excited by its own electron beam. A frame near the screen has two rectangular or U-shaped plates. Each passes light emitted from a corresp. first or second coloured flourescent material group of the tube. An adjuster connected to one plate enables alignment of the images of a test pattern formed on the screen by both plates. The degree of adjustment corresp. to the convergence error magnitude. The adjuster can rotate one rectangular plate about an axis parallel to the width of the other plate or one U-shaped plate about an axis parallel to the width of an arm of the other.
Patent DE-2852096-A1 (DE)
Title: Interrupting circuit between operating section and transfer connection - uses marker and transfer contact controlling blocking relay of testing device
Inventor: DIDAKOWSKI HANS JUERGEN ING GR
IPC: H04M3/60
Filed: 1978-11-30
Abstract: The circuit is used in a telephone exchange consisting of a subscriber-private branch exchange and a centrally controlled operating section having transmitters and a group marker (BM). A test circuit (P5) blocks in admissible connections by controlling a blocking relay (UV). If two or more of the indicator contacts (bx, by), or if the common transfer connection transmission contact (ba) and any marking contact are closed simultaneously the relay remains disabled. If the transfer contact is solely operated, the relay is activated. The junction between a resistor (R2) and a diode (G2) is coupled to earth and the voltage across the diode switches on a transistor and enables the relay (UV). Any other combination of closed on-contacts ensures that the transistor base voltage switches off the transistor, thus disabling the relay.
Patent DE-2854054-A1 (DE)
Title: reinforced flange seal assembly - has outer strengthening ring designed to resist internal pressures
Inventor: MANNS JOSEF
IPC: F16L23/18
Filed: 1978-12-14
Abstract: A flat seal (5) in the joint between the two flanges (1, 2) is enclosed by an outer ring (6). THe outer ring is made of a stronger material than the seal (5), eg it may be made of steel, and provides extra strength against bursting due to internal pressure. The outer ring (6) is thinner than the seal (5), to ensure that there is no interference with proper sealing contact between the latter and the faces (3, 4) of the flanges (1, 2). If the external dia of the ring (6) is such that it fits closely between the flange attachment bolts, this helps to locate the seal (5) correctly.
Patent DE-2855516-A1 (DE)
Title: Fluid disinfection and detoxification equipment - has water flow operated hydromotor driving pump dosing chemical agent into service water system
Inventor: GUELDENER FRITZ
IPC: B05B7/26
Filed: 1978-12-22
Abstract: The equipment uses service water from a tank supplied into the system via a pipe. The service water after passing a filter enters a hydromotor which drives a dosing pump and after leaving the hydromotor passes the flow through a water heater. The water heater has two outlets which join in a slide valve and leave the valve by a pipe to connect to the treated service water grid from which the water is used for showers or spray equipment. The chemical agent which decontaminates the raw water is supplied to the circuit through a mixing valve with its branch pipe connected to the discharge side of the dosing pump. The pump is supplied on the suction side with chemical agent via pipe.
Patent DE-2856499-A1 (DE)
Title: Machine for separating coal dust from coal - has central inlet tube without radial supports for improved airflow
Inventor: STRAUSS WERNER
IPC: B07B4/02
Filed: 1978-12-28
Abstract: A machine for separating coal dust from small lumps of coal has a cylindrical housing (2) with a central tube (7) projecting downwards from the top cover (11). Coal is fed into this tube and the larger lumps fall directly into the central hopper (5). A centrifugal fan (8), mounted on a tubular shaft which surrounds the inlet tube (7), creates an up-current which draws the dust upwards and then throws it outwards into the space (3) surrounding the hopper (5). The effect of the fan (8) is enhanced by the absence of any radial supports of the centre tube (7) which might impede the airflow.
Patent DE-2902820-A1 (DE)
Title: Open=end spinning rotor-shaft - has applied wear-resistant surface at supporting disc zone
Inventor: STAHLECKER FRITZ
IPC: D01H4/12
Filed: 1979-01-25
Abstract: To support the shaft of the rotor in an open-end spinning unit, the shaft is fitted with a running surface at least in the zone where it is supported by running discs at the rotor end of the shaft. The cladding is embedded in recesses in the shaft so that its outer surface lies flush with the shaft surface. Alternatively, the running surfaces can be a layer applied to the shaft surface. There is a wear-resistant cladding at the end of the shaft to bear against a ball bearing which is also made of a wear-resistant material. The system reduces the wear on the rotor shaft where it is in contact with the supporting discs.
Patent DE-2911473-A1 (DE)
Title: Paper stack cutting process - feeds compressed stack into cutter, has pivotal support table
IPC: B26D7/02
Filed: 1979-03-23
Abstract: The process is for the cutting of stacks of paper, carton, synthetic foil etc. which are moved into a cutter, and positioned pressed and cut. The stack is pressed outside the cutter, and moved into it for cutting. After cutting, the stack is moved out, and its position relative to the cutter adjusted. It is then moved back into the cutters for a repeat cutting. The rear (1) of the cutter (2) has a support table (3) which is movable and pivoted at right angles to the cutter. The table has an associated press (6) which is movable with it.
Patent DE-2916007-A1 (DE)
Title: Letter and sign stencil - includes stop and support edges formed on ruler ledges consisting of straight and inclined surfaces
Inventor: JEZIERSKI DIETER VON
IPC: B43L13/20
Filed: 1979-04-20
Abstract: Letter and sign stencil with stop and support ledges fitted along both longitudinal edges which project beyond the stencil sheet on either side. A ruler ledge (5) is formed on to both support ledges (4) adjoining the stencil sheet (1) at right angles and alternating in each case between the upper and lower edges. Each ruler ledge formed on to the support ledge () includes a straight surface extending parallel to the stencil sheet. An additional surface is inclined to the former (7).
Patent DE-2920645-A1 (DE)
Title: Hydraulic telescopic concrete mine support column formwork - has diametrally opposite piston units clamped to top and bottom half shells
Inventor: HEINTZMANN PETER DIPL ING
IPC: E21D15/00
Filed: 1979-05-22
Abstract: Two telescoping tubular formwork housing units, with the bottom one supporting a hydraulic thrust-piston assembly, in contact with the roof, for the top one, make up a mechanism for erecting a concrete or similar pillar-type support in a mine. Both bottom and top housing units are in the form of open-ended interconnectable half-shells. Two diametrally opposed hydraulically activated piston assemblies are clampable, by means of hinge plates on the bottom unit for the cylinders and on the top unit for the piston rods. A number of axially spaced grooves may be worked in the upper units periphery.
Patent DE-2924304-A1 (DE)
Title: Adjusting valve with throttle body - has sealing ring in groove lower on outside in sealing flange
Inventor: FEINAUER WERNER
IPC: F16K1/34
Filed: 1979-06-15
Abstract: The adjusting valve has a plug comprising a throttle body determining the valve characteristic. There is a sealing flange protruding beyond the body to form a collar with a sealing ring bearing against the seat. The ring (32) fits in a groove (31) in the flange (27) and its outside wall (33) is lower than its inside wall (34). The seat has an annular face (30) of larger dia. than the OD of the collar (29). The throttle body (26) can be arranged to extend part of the way over the groove.
Patent DE-2929228-A1 (DE)
Inventor: REINHARDT EUGEN
IPC: C09J7/21
Filed: 1979-07-19
Abstract: Wall coverings which are, if appropriate, adhesive and can be peeled off when dry, the reverse side of which is provided with a water-proofing multi-component layer and, if appropriate, with a water-activatable adhesive layer.
Patent DE-2932629-A1 (DE)
Title: Grinding device for tobacco cutter blades - monitors cutting dia. via sensor to automatically adjust setting of grinding disc
Inventor: ELSNER UWE
IPC: B26D7/12
Filed: 1979-08-11
Abstract: The polishing device uses a rotating grinding disc (8) supported by a holder movable in a direction parallel to the cutting direction. The grinding disc (8) is acted on by an adjustable guide tool (18) with an automatic setting drive (19) for the latter, which is coupled to a control device (32) receiving the output of a sensor monitoring the cutting dia of the rotating blades (2). This sensor is associated with one of the fixed counter blades (6) at the opposite side of the rotating cutter disc (1). Pref. the sensor uses two or more electrical contacts (29) insulated from one another along the cutting edge (31) of the counter blade (6) and coupled during passage of the cutter blade (2).
Patent DE-2935625-A1 (DE)
Title: Coupling for transporter truck - includes interchangeable coupling plates for different loads
Inventor: SCHULTHEIS HANS-WERNER
IPC: D03J1/00
Filed: 1979-09-04
Abstract: The coupling is for a transporter truck for use in industrial sites. It has a support plateform (4) on which a ring shaped bearing (12) supports different coupling plates on which different loads are attached. The couplings provide a pivot and/or swivel attachment for the loads. The loads are linked to the coupling by towing arms which locate in flanges on the plates. The trolley moves heavy and bulky loads in confined machine rooms with a min. of manual effort and dexterity.
Patent DE-2939329-A1 (DE)
Title: Automobile flashing indicator light - reflects external light and uses filter or coloured mirror coating to colour emitted light
Inventor: GRUPP JOACHIM ING GRAD
IPC: F21V9/08
Filed: 1979-09-28
Abstract: The flashing indicator light has a bulb (10) positioned behind a colourless cover plate (22), with an optical structure between them allowing passage of the light from the bulb (10) towards the outside, but reflecting back light entering from the outside. This optical structure may comprise a one-way reflective layer (14) carried by a support plate (23) acting as a colour filter for imparting the required colour to the light from the bulb (10). A parabolic reflector (20) is positioned behind the bulb (10), the reflective coating (21) of which may colour the reflected light yellow, in which case the support plate (23) for the one-way reflective layer (14) is transparent.
Patent DE-2940896-A1 (DE)
Title: Solar heating system using roof tiles - uses standard tiles and special tiles with channels for circulating heat exchange fluid
Inventor: LUDOWICI MICHAEL CHRISTIAN
IPC: E04D13/18
Filed: 1979-10-09
Abstract: The solar heating system combined with a heat pump for an air conditioning system for a building uses roof tiles (12) which can be incorporated with the conventional roof tiles, to circulate the heat exchange fluid. These special tiles are slightly deeper than the conventional tiles, and incorporate channels (1221) through which the liquid circulates. Certain tiles have rectangular openings through the base, through which pass fittings for the pipes which are connected to these channels. The special tiles are made up of a base portion (22) and a top portion which interlock with each other. The rectangular clearance openings are in the base portions, and the fittings enable the channels to be connected with a circulating tube and collector system. The system can be incorporated in an existing roof with conventional tiles.
Patent DE-2943177-A1 (DE)
Title: Remote adjustment driving mirror - has bowden cable drive with coupling element
Inventor: SCHUWERK FRITZ
IPC: B60R1/064
Filed: 1979-10-25
Abstract: The external driving mirror remote adjustment has the mirror mounted on a swivel stalk operated by a gear wheel (12) driven by a rotating Bowden cable and a worm gear. Axial movement of the cable is translated into a rotational movement about an orthogonal axis by the mounting base of the mirror. The mirror adjustment is simple and direct. The control knob (18) is pulled axially to adjust about one axis, and is rotated to adjust about the orthogonal axis. The mirror mounting includes a joint to allow the mirror to be folded back when struck.
Patent DE-2948246-A1 (DE)
Title: Rack and pinion steering shaft - is carried in ball bearing in housing bore with plastics bush and outer seal ring outside bearing
Inventor: NOVAK SRDJAN DIPL ING
IPC: F16C33/72
Filed: 1979-11-30
Abstract: The shaft bearing is particularly for the pinion shaft (4) of a rack (10) and pinion steering system. The shaft is carried in a ball bearing (8) held in a bore (20) in the housing (2) and the housing is sealed by a shaft seal ring (38). Next to the bearing, the bore contains a bush (26) which surrounds a cylindrical shaft portion (28) with a small clearance gap. The seal ring is contained within an axially extending annular collar (36), of the bush. The bush may be plastics and contoured (32) to fit into an annular groove (30) in the bore (20), whilst an annular recess (34) in the bush provides the necessary resilience.
Patent DE-3005335-A1 (DE)
Title: Harvesting cart with rotary cylinder at outlet - has splined shaft-driven hub pivoted to cylinder for easy removal in confined space
Inventor: LIEPOLD ADOLF
IPC: A01D90/10
Filed: 1980-02-13
Abstract: The cart (side walls 1,9) have a rotary cylinder (5) in the outlet opening. The cylinder is driven at one end by a chain wheel (2) fixed on a shaft (3) with splined end (4) fitting a coupling bush (6) in the hub plate (13) of the cylinder. The other end is carried by a retractable stub shaft (7). The hub plate is pivoted (8) to the main body of the cylinder which permits this body to be swivelled sideways, after removing the stub shaft, to permit disassembly with minimum gap width between the sides (1,9) and the ends of the cylinder.