baber/WOPTO huggingface dataset:
Patent DE-3013950-A1 (DE)
Title: Reflective light barrier for surface servo-sensor - has receive phototransistor with direct light source for additional receiver irradiation
Inventor: HANKE KLAUS-DIETER DIPL ING
IPC: G01S17/04
Filed: 1980-04-11
Abstract: The reflected light barrier recognises a portion of a reflected light for derivation of a corresponding signal. It is used for the control of covering a surface, or a space, by an infra-red radiation transmitter. A phototransistor is used as receiver (2) and contains a light source (19). The radiation of this source is directed from a transmitter (1) continuously onto the phototransistor (11), in addition to a reflected portion of a modulated light radiation. In this manner, amplification by the receiver phototransistor can be obtained, which may be continuously held within given limits. The light source is arranged in a common housing with the phototransistor such that the light detecting surface of the transistor is continuously engaged by light radiation, due to fixed mounting of the light source.
Patent DE-3016566-A1 (DE)
Inventor: SCHUNTER ROLAND
IPC: B62B3/10
Filed: 1980-04-29
Abstract: 1. Cleaning trolley for the accomodation of cleaning appliances with a wheeled trestle presenting an essentially vertical supporting frame, fastened to the upper end of which is one at least essentially horizontal and about ring-shaped holding frame which serves to receive a suspended bag for garbage or the like whose opening can be closed by means of a lid mounted pivotically on an essentially horizontal axis arranged on the supporting frame, whereby said cover is fixed in axial direction, characterized in that the axis (26) has been provided with a swelling (30) engaging in a corresponding recess of a hinge (29) of the lid (30) whenever the hinge (29), open on one side, is being moved across the axis (26).
Patent DE-3017198-A1 (DE)
Title: Polyether poly:amine(s) useful as dispersants and in oil-fields - as demulsifiers, corrosion inhibitors and acid retarding agents
Inventor: DIERY HELMUT DIPL CHEM DR
IPC: C09B67/46
Filed: 1980-05-05
Abstract: Polyether polyamines of formula (I) are new: (where R1 and R2 are the same or different, and are C8-C30-alkyl, -2hydroxyalkyl, or-alkenyl, or C8-C24 alkoxypropyl; m and n are 2 or 3; R3 is CH3 or H; and (o+p+q+r) is 4-600). Also claimed are their prepn. by the reaction of R1-NH-(CH2)m-NH-(CH2)2-NH-(CH2)n-R2 (II) with ethylene oxide or propylene oxide, and their uses as dispersing agents and in gas- and oilfield applications.. Where (o+p+q+r) is 60-450, the cpds. are useful in low concns. as dispersing agents for organic and inorganic pigments, dyestuffs, and colour brighteners. The dispersions can be used in dyeing with dispersion colours, pigment printing of textiles, and in flexo- or gravure printing. When (o+p+q+r) is 4-150, the cpds. and their salts are useful in oilfields as corrosion inhibitors, demulsifiers, and acid retarding agents (these moderating the attack of e.g. limestone by pumped-in acids).
Patent DE-3021085-A1 (DE)
Title: Impregnation of water with carbon di:oxide in pressurised tank - with porous gas feed block mounted in water inlet pipe
Inventor: MAGNUS EBERHARD ING GRAD
IPC: A23L2/38
Filed: 1980-06-04
Abstract: Appts. for impregnating water with carbon dioxide consists of a pressurised water tank contg. a cooling coil and possessing an ascending discharge standpipe; the carbon dioxide is fed into the water through a porous block. Porous block is mounted in a downward leading water feed pipe, with sufficient space around the block for the water to flow past; the lower end of this feed pipe is situated hiqher than the inlet end of the discharge standpipe. Pref. the porous block consists of two separate blocks coaxial with one another and connected together by a gas feed pipe. Used for the gasification of water for drinks, etc., the arrangement achieves a hiqh impregnation efficiency with relatively simple equipment.
Patent DE-3021123-A1 (DE)
Title: Length stop for tube hot cutter - has several annular stops, transmitting control pulses to collector, controlling feeder of cutting tool
Inventor: BRAUN HANS
IPC: B23Q16/00
Filed: 1980-06-04
Abstract: The device comprises at least one stop adjustable in the longitudinal direction of the slidable tube. On adjustment the stop transmits a control pulse. The device has several such stops (13,13a,13b). They are of identical sector shape around the tube rotating about its centre axis. These stops are coupled for control pulse transmission to a collector (18), which transmits an output signal for the cutter feed, either during, or after, the input of the last control pulse. Pref. each of the stops extends over a sector of 120 deg., the collector transmitting its output signal after input of the third stop control pulse. The stop adjustment may be detected mechanically, inductively, by photocells, or ultrasonically.
Patent DE-3024994-A1 (DE)
Title: Animal feed prodn. from vegetable materials - by treating with compsn. contg. yeast, ammonia source and organic acid
Inventor: NEUMAIER ROLF
IPC: A23K10/12
Filed: 1980-07-02
Abstract: Prodn. of protein-rich animal feeds from vegetable materials (esp. waste materials such as straw, grass or beet leaves)is carried out by moistening the material with a digester compsn. and storing the moistened material. The digester compsn. is a soln. contg. yeast (Saccharomyces cerevisiae), a NH3 cpd. (pref. urea) and an organic acid (pref. propionic acid)in a ratio of 60:30:10. The yeast is pref. a dried yeast comprising 3 different strains having fermentation temps. of 10, 20 and 30 deg.C respectively. The digester compsn. is pref. used in an amt. of ca. 1 kg per 100 kg of starting material (dry basis). The prods. can be stored in the open for long periods without spoiling (cf. DE2811208).
Patent DE-3025807-A1 (DE)
Inventor: FOCK JUERGEN DR
IPC: C08G65/28
Filed: 1980-07-08
Abstract: 1. Process for the preparation of polyesters with at least two free hydroxyl groups being retained on the starting alcohol, the hydroxyl groups being separated from one another by at most three carbon atoms and the hydroxyl group at the end of the polyester chain being blocked, optionally reversibly, but stable towards the conditions of acetal or ketal splitting, characterized in that a) an oxirane of the formula  see diagramm : EP0043966,P6,F1  in which R**1 denotes a hydrogen radical, an optionally halogenated hydrocarbon group with 1 to 30 carbon atoms or the group -CH2 OR**2, in which R**2 denotes an alkyl or alkenyl group, and wherein the groups R**1 within the polymeric molecule are identical or different, is added onto a trihydric or polyhydric alcohol in which at least two hydroxyl groups are acetalised or ketalised, b) the hydroxyl group of the resulting polyester-monool is blocked by reaction with a group, which is reactive in respect of this hydroxyl group, of a monofunctional compound which is stable under the conditions of acetal or ketal splitting, and c) the acetal or ketal is then split by the action of acid.
Patent DE-3031153-A1 (DE)
Title: Water ski with buoyancy tubes - which form sharp tip in movement direction and have shoes for skier feet
Inventor: LEINEWEBER HANS JOACHIM DR
IPC: B63B35/81
Filed: 1980-08-18
Abstract: The body weight in a water ski is carried by buoyancy providing round or square section pipes with grooves. The pipes for a shaft point in the direction of movement and the shoes on the pipes may or may not be fitted with attachment buckles. The ski stocks are fitted with water-tight hollow elements at their ends in either conical or pyramidal shape, with their points fixed to the ski stock.
Patent DE-3033106-A1 (DE)
Title: Double acting two stroke IC engine - has cylinder block reciprocating in frame perpendicular to reciprocating pistons
Inventor: OBERT KLUAS
IPC: F02B75/02
Filed: 1980-09-03
Abstract: The engine has a crankshaft with a single crank (13) in its centre. A double acting piston (14) sits directly on the crank. The piston reciprocates in a double ended cylinder (18) in a block (17). The block slides inside the engine frame (11) on an axis (29) perpendicular to the cylinder axis (30). The block has plungers (33,34) which reciprocate in cylinders (35,36) formed in the frame. These constitute compression cylinders which charge the working cylinders (18). There are transfer ports (41,44) through the frame between the compression cylinders and the working cylinders as well as inlet ports (39,40) into the compression cylinders and exhaust ports (47,48) from the working cylinders.
Patent DE-3035128-A1 (DE)
Title: Pot plant water-supply equipment - has wick unit on three curved arms forming annular surface when closed
Inventor: SCHUEFER DIETER
IPC: A01G27/04
Filed: 1980-09-17
Abstract: The equipment provides pot plants with water, air and if necessary nutrients; it has a pot for the plant and a suction wick unit supplying water and nutrient. An external pot accommodates the water, the plant pot and the wick unit, and the height of the latter in the external pot is variable by swing arms locking into engagement with them. There are three such arms (8), forming segments of a circle, with their pivot axes on a common pitch circle round the edge of the base (7) of the wick unit (2). When swung inwards they form with the body (1) of this unit a closed body with an annular support surface.
Patent DE-3035300-A1 (DE)
Title: Clothing article protective cover - has insertion opening in lengthwise direction and with overlapping edges
Inventor: PARROCHIA MAXIME ANDRE
IPC: B65D85/18
Filed: 1980-09-18
Abstract: To protective cover is particularly for articles of clothing, comprising sections of plastic sheet sealed along the ends and with an insertion opening. The opening runs in the lengthwise direction of the sheet and has two overlapping edges, which come to lie between the lengthwise axis of the sheet and its lateral fold line. The sheet can be of polyethylene, polypropylene, or a copolymer of the two, with a thickness between 10 and 120 microns, and there can be an opening (T) in the top edge through which the hook of a clothes hanger can be passed.
Patent DE-3035858-A1 (DE)
Title: Multi-mode fibre optical branch components - have fibres arranged on one side to convert energised envelope modes into core modes
Inventor: WITTE HANS-HERMANN DR
IPC: G02B6/28
Filed: 1980-09-23
Abstract: The multi-mode optical fibres are so arranged on one side that the envelope modes, energised during coupling can be converted into core modes useful for the system. Pref. the fibres are tapered in such manner as to form a linear thicknessing in the outgoing direction. The incoming fibres may be also tapered. If the multi-mode fibres are used for an optical coupling and/or decoupling branch with fibre axes offsetting, all fibres are tapered on one side. In the production process heat, sufficient for melting is supplied axial symmetrically to a small fibre region. Then the fibre ends are uniformly pulled apart. Over the profile of the applied heat and the extension of the fibre angle and cross section a central separation is provided at the narrower part of the angular section. The optical branching components are pref. used in optical communications system.
Patent DE-3036568-A1 (DE)
Title: Fluid soap dispenser mechanism - has supply container which must be inserted for correct pumping action
IPC: A47K5/12
Filed: 1980-09-27
Abstract: The dispenser which can be used for soap, disinfectant etc. comprises the normal fluid dispenser container, pump, inlet and outlet valves and operating members. It also has a module (21) which projects into the inside (25) of the dispenser container (2) and incorporates the pump (29) which is connected by a pump channel (30) to the outlet valve (31) and release channel (23) wherein the latter is closed by the fluid supply container (49). It is now necessary for the correct supply container to be inserted into position which allows the dispenser to operate. Should fluid be added direct to the dispenser container or if a wrong supply container is fitted the correct pumping action is not achieved allowing the user to realise his mistake.
Patent DE-3039917-A1 (DE)
Title: Fastener fitting for hollow, plastics greenhouse panels - has arm with curved tip inserted through hole in inner skin, with bracket or spindle attached
Inventor: FISCHER ARTUR DR
IPC: F16B5/06
Filed: 1980-10-23
Abstract: The double-wall plastics panels (1) have vertical partitions (2) between the inner and outer skins, forming hollow, square-section vertical cells (7). Brackets (3c) can be attached to the panels for use as supports for pipes, cables etc., or for clamping two panels together to form a butt joint. When used for a joint, the bracket can form a connection to e.g. a vertical angle (20), forming part of a supporting structure. The bracket has two parallel slots (23) into which are inserted two prongs (25) of a U-shaped locking member (26). All types of supports or brackets include an arm (6) with a curved free end (9) which is inserted in a hole (8) through the inner skin, so as to fit inside a vertical cell. One type fitting may consist of a threaded stem with a nut for retaining an angle-shaped cleat, attached to such the bracket arm. Other fittings may be used for different joints.
Patent DE-3043768-A1 (DE)
Title: Broadcast receiver input stage tuning system - provides at input stage tuning voltage which is derived from storage capacitor and is free of residual ripple
Inventor: GOETZ LASZLO
IPC: H03J7/28
Filed: 1980-11-20
Abstract: Previous variable duty cycle tuning systems suffered from ripple; in proposed circuit, a coincidence testing circuit determines whether a received HF signal is a television channel frequency. If so, a high value signal is output by a Schmitt trigger. A logic gate responds to the signal to render non-conductive a field effect transistor in a switching circuit. Thus the tuning voltage output by signal converter in response to coarse and fine tuning signals is no longer passed to the output terminal of the circuit. Instead, a ripple-free voltage stored on the capacitor which has the same amplitude as the tuning voltage is passed to the output terminal. The automatic frequency control circuit acts to vary the voltage stored on the capacitor so that it stores the voltage required to tune the receiver precisely to the required broadcast frequency.
Patent DE-3102373-A1 (DE)
Inventor: FISCHER HERBERT DIPL CHEM DR
IPC: C07D405/06
Filed: 1981-01-24
Abstract: N-substituted polyglycidyl urazole compounds of the general formula <IMAGE>  (I)  in which the radicals R represent a glycidyl radical corresponding to the following general formula    <IMAGE> (II) wherein R1 represents hydrogen or an alkyl radical containing from 1 to 4 carbon atoms, or two of the radicals R represent a glycidyl radical of general formula II while the remaining radical R is a radical Z, other than said glycidyl radical, containing carbon, hydrogen and, optionally, heteroatoms, are useful in the treatment of various forms of leukemia.
Patent DE-3106902-A1 (DE)
Title: Apparatus for curing meat
Inventor: ORTNER JOSEF ANTON ING
IPC: A23B4/28
Filed: 1981-02-24
Abstract: Apparatus for curing meat with injection needles which are mounted in a needle holder which can be displaced towards a support for the meat to be cured and in each case penetrate a holding-down device which is displaceably guided in the direction of the needle axes. The holding-down device can be pressed in a resilient manner in the insertion direction against a stop of the needle holder and, in this basic position limited by the stop, tightly encloses the needles in the region of their brine-discharging apertures. A feed pipe, which is connected to the injection needles, for the brine and a return pipe are provided by means of which the flow of brine can be short-circuited in the basic position of the holding-down devices. The holding-down devices form chambers which accommodate the brine-discharging apertures of the needles in the basic position and are connected to the return pipe. This ensures that the flow of brine is not interrupted, so that a circuit to permit the flow of brine is automatically achieved without expensive control devices.
Patent DE-3120197-A1 (DE)
Title: Heat-pump installation as complete replacement for a conventional heating boiler
Inventor: SKORUPA EWALD
IPC: F24H4/02
Filed: 1981-05-21
Abstract: For the purpose of heating-cost saving with internal combustion engine heat pumps, the refrigerating circuits have previously been operated with a type of evaporator and compressor of open construction. By means of two compact units which work independently of one another,   a) the compact unit with refrigerating circuit, with fully hermetically encapsulated compressors with the exception that in this case two evaporators are operated alternatively. Up to an outside temperature of +5 DEG C an air evaporator works, upwards of +5 DEG C the unit switches over to the second, the water evaporator. b) the compact unit with internal combustion engine and generator. The electric current generated drives the compressor, the waste heat is supplied via heat exchangers to the heating circuit new possibilities, significant savings and an increase in operational safety arise:   - as a result of the use of fully hermetic compressors, there are no difficulties in sealing the shaft lead-through - as a result of independent working of the compact units, the retrofitting of electric heat pumps already in existence with a compact unit/internal combustion engine/generator is possible - as a result of reaching high performance numbers, as evaporation temperature remains the same at outside temperatures below +5 DEG C, and keeping the condensation temperature low. High heating system forward-run temperatures are possible as a result of internal combustion engine waste heat. - as a result of the elimination of the automatic defrost.
Patent DE-3121487-A1 (DE)
Title: Set of structural elements for forming a ground gulley
Inventor: MEYER THOMAS
IPC: E03F5/04
Filed: 1981-05-29
Abstract: A set of structural elements for forming ground gulleys from gulley housings, inlet grates and, if appropriate, intermediate frames, which can be connected together in different ways, has, on the gulley housing and/or on the intermediate frame, bearing surfaces which are located at at least two different distances beneath the upper edge, with the result that inlet grates and/or intermediate frames of different thicknesses may optionally be inserted. The bearing surfaces for a smaller insertion depth can rise in a stepped manner above the bearing surfaces for a greater insertion depth, to be precise preferably in the corner regions of the gulley housing and/or intermediate frame, and cutouts for the bearing surfaces, elevated in a stepped manner may then be provided on the underside of each inlet grate and/or intermediate frame.
Patent DE-3123820-A1 (DE)
Title: Electrohydraulic servo mechanism
Inventor: KAWABE SABURO
IPC: F15B9/04
Filed: 1981-06-16
Abstract: Reliable synchronising of the movement of a driven element (6) with the movement of a control element (5) during loads acting on the driven element is achieved by an electrohydraulic servo mechanism which contains a device (1) for mechanically detecting the difference in movement between control element and driven element, a device (3) for converting the detected difference in movement into an electric signal, and a device (4v) for using the electric signal to adjust the volume and direction of flow of the hydraulic fluid, which is fed to an actuator (7) serving to drive the driven element. <IMAGE>
Patent DE-3126832-A1 (DE)
Title: Activated sludge tanks for waste water purification plants or the like having round or approximately rectangular ground plan, in particular activated sludge tanks having low levels of pollution
Inventor: BOTSCH BERTRAM DIPL ING
IPC: C02F3/12
Filed: 1981-07-08
Abstract: Activated sludge tanks for waste water purification plants or the like having round or approximately rectangular ground plan and having separate devices for aeration and circulation, a ring-shaped circulation being produced in the tank by means of rotating flat elements and the aeration being produced in a manner known per se by means of aeration elements.
Patent DE-3127330-A1 (DE)
Title: Process for the electrolytic etching of aluminium
Inventor: DYER CHRISTOPHER K
IPC: C25F3/04
Filed: 1981-07-10
Abstract: Process for etching aluminium by applying an electrical alternating current to aluminium which is in contact with an electrolyte containing hydrochloric acid. In this process, the shape of the oscillations of the alternating current is symmetrical, the current rapidly rising from zero to a maximum, then rapidly dropping in a first step to a medium value which corresponds to approximately @ to approximately 1/2  of the maximum and then dropping more slowly to zero in a second step. The current then rises and drops in the opposite direction with the same shape of oscillation. The ratio between the time of the second step and the time of the first step of the shape of oscillation lies within the range of from 1 to 6. When this process is applied, higher capacitive values of the etched aluminium are achieved, compared to known processes.
Patent DE-3127672-A1 (DE)
Title: Means for measuring free track length
Inventor: DEWALD HANS ING GRAD
IPC: B61L1/18
Filed: 1981-07-13
Abstract: In order to determine the free track length in a given direction from one end of a predetermined track section, the invention provides a plurality of track circuits (G1, G2) which are uncoupled from one another by separating junctions, are lined up in rows directly one beside the other and, when a vehicle (F1, F2) is present, influence the frequency of an oscillator (O1, O2) by inductive detuning. The oscillator frequency is a measure of the free length of the associated track circuit (G1, G2). The resulting free track length is obtained by adding all the free lengths of the track circuits (G1, G2). <IMAGE>
Patent DE-3128285-A1 (DE)
Title: Photographic folding camera
Inventor: SACHS GUENTER
IPC: G03B17/04
Filed: 1981-07-17
Abstract: Mounted pivotably in the region of the free end of a lens holder (6) which can be pivoted out and in is a spring-loaded locking strip (2) which essentially extends over the entire width of said holder. In the locking position of said strip, a middle locking element, which is formed from a latching face (3a) of the locking strip (2) and a latching projection (1a) on the camera housing side, transmits the essential locking force, while two lateral locking elements (4e and 5e) of the locking strip (2) and corresponding locking elements (1c and 1d) of the camera housing are assigned to one another and are separated from one another by a small air gap. Stresses and twists occurring due to external influences, such as an impact or blow or heat as well as due to tolerances and irregular characteristics of the strength of the flexible plastic bellows (10) can be absorbed by the elastic compliance and the centre-emphasised three-point latching of the locking strip (2). Said absorption is achieved owing to the fact that given a slight deformation of the locking strip (2), retention is still performed by the lateral locking elements, or mutual support of the middle and a lateral locking element is maintained. <IMAGE>