baber/WOPTO huggingface dataset:
Patent DE-3001092-A1 (DE)
Title: Hydraulic brake control valve - is operated by external plunger to vent fluid to reservoir
Inventor: KEEGAN COLIN MICHAEL PATRICK
IPC: B60T13/14
Filed: 1980-01-14
Abstract: The valve has a floating piston (8) to modulate the brake pressure and a plunger (4) operated valve to vent the fluid pressure to a return line (3). The vent valve is arranged in such a way that it does not open when the brake inlet valve is open. The brake inlet valve is operated by a ball seal (17). In the venting position a cylindrical extension of the floating piston closes off the inlet to prevent loss of fluid from the supply line to the reservoir. The cyclic modulation control then uses a minimum of fluid so that braking efficiency is maintained.
Patent DE-3007429-A1 (DE)
Title: Control circuit for motor - has tachometer coupled to comparators connected to integrated circuit controlling triac
Inventor: HAMMERMANN JOACHIM
IPC: H02P25/14
Filed: 1980-02-28
Abstract: The control circuit comprises an integrated circuit coupled to a tachometer and controlling a triac. The tachometer's output voltage is proportional to the motor's speed and is compared (31) with a control voltage passed via a delay circuit (26,27). The speed-proportional voltage is applied to one input (P4) of the comparator (31) and the delayed control voltage to the other input (P5). The output of the comparator output (P2) passes via a delay (37,38) to the input (P6) of a second comparator (30) where it is compared with a reference voltage (P7). The second comparator's output (P1) is connected to the integrated circuit (6) to control the generation of turn-on pulses for the triac (2).
Patent DE-3015764-A1 (DE)
Title: Partition for sheet metal drawer - has projections engaging in base recesses to stand upright and support insert trays
IPC: A47B88/20
Filed: 1980-04-24
Abstract: The partition is provided on the underside with projections (10) which engage in recesses at the bottom of the drawer. The projections which are resilient are set spaced from each other in the supporting direction and have off-set contact faces (14,15). Spacing the projections away from each other increases the leverage with which the torque of the partition is introduced into the base of the drawer. The partition always remains in a defined upright position so that insert trays for writing utensils can, if required, be hung from the upper edges of two adjoining partitions, or of one partition and one adjoining drawer wall. The resilience of the projections allow the partitions to be changed from one position to another.
Patent DE-3016374-A1 (DE)
Title: Dispersing turbine for clumping solids and highly viscous liquids - has multi-bladed rotor varied in distance from dispersing elements
Inventor: SEEGER HANSPETER
IPC: B01F27/91
Filed: 1980-04-28
Abstract: Dispersing turbine has a multi-bladed rotor (5) which can be varied in its axial distance from one or two stationary or revolving dispersing elements (6), typically in the form of gratings. The medium to be dispersed flows axially through the turbine. A hollow rotor may be used. In the typical arrangement shown, the entering liquid passes through a guide ring (4), which can be adjusted in height while the machine is in operation, and passes through the bladed rotor (5) which in conjunction with the stationary grating (6) shears and breaks up solid components in the medium. Useful for the thorough dispersion of solids which tend to clump in a liquid medium particularly at high viscosities.
Patent DE-3018293-A1 (DE)
Title: Device preventing video tape friction folding - has tape drive shaft, sound control head, and erasing heads in opposite arrangement to tape discharge drive wheel
IPC: G11B15/665
Filed: 1980-05-13
Abstract: The anti-friction device has a tape drive shaft, a tone control head and erasing heads in opposite arrangement w.r.t. an unwinding reel drive wheel and a winding reel drive wheel. Two tape applicator gears are provided, the first one having a pressure roll (4) for pulling out the tape from a cassette and pressing it against the drive shaft on one side of the rotary head. The second applicator gear has a tape pull-out pin, applying the magnetic tape on the other side of the rotary head. The two gears closely surround the rotary head mounted between the tape drive wheels and the drive shaft. The pressure roll is coupled to the first applicator gear via an arm while a second arm on the second applicator gear carries the pull-out pin. To the two arms are hinged a short swivel arm and a swivel plate. A conical roll or pin is mounted on these two components for assisting in the tape pull-out from the cassette, together with the pressure roll and the pull-out pin.
Patent DE-3028107-A1 (DE)
Title: Combined miniature fastening spacer for electric components - has insulating socket with front coaxial plug and with rear socket of several tines
Inventor: LANG FRANZ
IPC: H05K3/34
Filed: 1980-07-24
Abstract: The spacer is also intended for fastening electric components. It has an insulating socket (2) which has a coaxial arrangement of a front plug member (6) and a rear plug retainer (7), consisting of several small tines (8). The two parts fit together and the front plug member protrudes over a stop surface (10). From the front side extend component retaining apertures (17,20) through the plug member back to the plug retainer. Pref. the plug member and/or the plug retainer are secured against rotation. The retaining apertures may be in the form of clamping slits (17), to which funnel-shaped shafts (18,19) may lead. Alternately, a central bore (20), surrounded by radial clamping slits may form the retaining apertures. The plug member has on the front side a centering depression (20). The socket has separating strips (14) in the plug retainer. If the socket is polygonal, it has lateral, oppositely positive connectors.
Patent DE-3028463-A1 (DE)
Title: Master holder for reproduction camera - has clear foil roller servo driven over transparent vacuum plate
Inventor: WERNER HANS
IPC: G03B27/64
Filed: 1980-07-26
Abstract: A master holder for a reproduction camera has a vertical transparent plate (12) on which the master is held by suction. A transparent flexible foil is rolled over the master to flatten it onto the plate. The foil is unrolled from a roller (2) which rolls down over the plate on side guides. One side of the roller is fitted with a servo motor linked tothe power supply by a flexible cord (3). The other end of the roller has a balance weight and rolls down a vertical guide. No separate drive control is required for the other side of the roller.
Patent DE-3032151-A1 (DE)
Title: Developing and lacquering compsn. for lithographic printing plates - obtd. by mixing organic lithium salt and resin solns.
Inventor: GRUENBERG GREGORY VON
IPC: G03F7/32
Filed: 1980-08-26
Abstract: A one-step developing and lacquering compsn. is prepd. by mixing (A) an aq. soln. of at least 1wt.% of a Li salt of a 1-36C organic cpd. having at least one acidic H; and (B) a water-miscible organic solvent soln. contg. 5-20wt.% of an ink-receptive, film-forming resin in the ratio 1:3-30:1. The use of Li benzoate as the Li salt; methyl amyl ketone, methyl 'Cellosolve' (RTM) or its acetate, cyclohexanone, DMF, DMSO, isopropanol or dioxane as the solvent of (B); and an epoxy, polyvinyl acetal, phenol-formaldehyde, polyurethane or polyester resin as the resin of (B) is claimed. The compsn. is useful for treating exposed diazo sensitised lithographic printing plates. It provides an extended pressure life (improvement of 200%, compared with the use of (A) alone).
Patent DE-3037691-A1 (DE)
Title: Artificial traffic generation for telephone exchange testing - has incoming and two-way junctions intercepted by call control and generation equipment plus outgoing junction coupling
Inventor: SCHNABEL HARALD DIPL ING
IPC: H04M3/36
Filed: 1980-10-06
Abstract: The test equipment connects to the trunks and junction circuits into a telephone exchange in order to generate artificial traffic for testing the traffic carrying capacity and dimensioning of the exchange. The exchange (VA) under test has its outgoing junctions (EL1..Elm) connected into a switch block (KE) controlled by the test equipment (PG). A diversion unit (U,U1,U2) is connected into the incoming and both way junction circuits (ELn...ELx) between the test switch block (KE) and the exchange (VA). The diversion unit (U) is also connected into the test equipment (PG) so that the test equipment (PG) can control the setting up and duration of calls from the switch block (KE,Ea/b) through to the exchange (Aa/b).
Patent DE-3038689-A1 (DE)
Title: IC engine piston plastics rollers - projecting from skirt to absorb lateral bearing load, seal being provided by piston rings
Inventor: MAY WERNER
IPC: F16J1/02
Filed: 1980-10-14
Abstract: The piston has rotatable plastic rollers or balls projecting radially from the piston skirt to provide lateral support on the cylinder wall, the piston seal being provided by the piston rings only. The rollers or balls are pref. in an acid and heat-resistant plastic with high bearing strength.
Patent DE-3039818-A1 (DE)
Title: Hydraulic swivel clamp for machine tool work - has piston spring-loaded to hold clamp piston in position if hydraulic pressure fails
Inventor: ERSOY METIN DR ING
IPC: B25B5/06
Filed: 1980-10-22
Abstract: The hydraulically operated swivel clamp is intended for clamping a workpiece on the work support of a machine tool. It comprises a housing with a cylinder bore for a piston carrying the clamp. A normally non-rotatable central bolt in the housing has a cam slot, engaged by a ball in the piston and shaped such that, during lifting, the piston first rotates (e.g. 60 deg.) to swivel the clamp. A double-walled bush surrounding the piston has its annular chamber filled with a medium which is pressurised by the annular rim of a piston under the action of a spring. The piston is clamped in position by expansion of the bush if the piston is not pressurised.
Patent DE-3041340-A1 (DE)
Inventor: LOSSACK EDGAR DR ING
IPC: B22D27/15
Filed: 1980-11-03
Abstract: A diecasting process for producing cast pieces for metals or their alloys by means of a horizontal cold chamber diecasting machine. The diecasting machine includes a diecasting mold held under a vacuum, a fill chamber coupled to the diecasting mold, a holding furnace containing metal melt, a suction pipe partially immersed in the holding furnace and coupled to the fill chamber, means for transporting metal melt from the holding furnace through the suction pipe into the fill chamber under a vacuum, and means for moving the metal melt from the fill chamber into the diecasting mold. During the dosaging phase when the fill chamber is filled with metal melt, gases and lubricant vapors are developed upon entry of the melt into the fill chamber. The process includes the steps of maintaining the vacuum in the fill chamber during the dosaging phase until the gases and lubricant vapors so developed have been substantially extracted and maintaining the vacuum in the fill chamber to its maximum extent until the diecasting mold is completely filled with the metal melt.
Patent DE-3047330-A1 (DE)
Title: Electrochemical erosion esp. of titanium workpiece - flooded with liquid electrolyte uses subsidiary circuit to reduce unwanted erosion
Inventor: GOSGER PETER ING GRAD
IPC: B23H3/00
Filed: 1980-12-16
Abstract: An apparatus for the electrochemical treatment of a metal workpiece, esp. of titanium, by electrolytic removal of material in localised zones, comprises a seating for the workpiece, a treatment electrode or cathode, a direct current circuit to which the workpiece is connected as the anode, and liquid electrolyte which touches surfaces not requiring treatment of the workpiece. In the support and at a short distance from the workpiece, an electrical conductor is connected in an auxiliary direct current circuit. In this circuit the metal sheet acts as anode. Appts. is used in partic. for the electrochemical treatment of titanium by material removal (erosion). The method and apparatus enable complicated masking systems for various parts of the workpiece to be dispensed with and a simple electrical device for reducing scattered removal of surface material to be used instead.
Patent DE-3047598-A1 (DE)
Title: Domestic refrigerator with automatic de-frost cycle - records number of refrigeration cycles to initiate de-frosting
Inventor: SCHOTTEN HENNO DIPL ING
IPC: F25D21/00
Filed: 1980-12-17
Abstract: The refrigerator has the refrigeration unit switched on intermittently under control of a temp. responsive regulator monitoring both the air temp. within the refrigeration space and the temp. of the heat exchanger within the latter. An electronic control ensures that the switch function controlled by one temp. monitor is completed before initiation of the other switch function, as in P2616175. The heat exchanger is allowed to defrost after several refrigeration cycles using an electric heating device and/or the heat supplied from the surrounding air. The number of refrigeration cycles may be recorded by a binary counter, with the automatic de-frost cycle initiated at a given count. Alternatively the de-frost cycle is initiated by a timer supplying an astable multivibrator and a binary counter.
Patent DE-3100519-A1 (DE)
Title: Control device
Inventor: STAIGER BRUNO
IPC: H01R12/70
Filed: 1981-01-10
Abstract: In this control device, solenoid valves with magnetic heads are provided on an electrical printed-circuit board and have contacts which pass through the printed-circuit board and are connected to conductors on its rear side. In order to provide a high-quality plug connection and favourable installation and servicing capabilities, the conductors on the rear side of the printed-circuit board have allocated to them flat U-clamps, with free clamping limbs, prestressed towards one another, between which flat connector contacts of the magnetic heads are supported in a fixedly clamped manner.
Patent DE-3105313-A1 (DE)
Title: Method and device for handling workpieces
Inventor: MUENKER PETER
IPC: C23G1/00
Filed: 1981-02-13
Abstract: To remove gas bubbles from the surface of workpieces which are being treated with acid or alkali solutions or galvanically, the workpieces are shaken in the treatment bath at relatively high frequency <IMAGE>
Patent DE-3111147-A1 (DE)
Title: Apparatus for compacting bulk material, especially refuse
Inventor: STRATMANN THEODOR
IPC: B65F3/20
Filed: 1981-03-21
Abstract: The invention relates to an apparatus for compacting compactible bulk material, especially waste such as refuse, wood chips etc., having a casing (2, 3, 4, 13) which has a filling shaft (2) and a delivery shaft (3), between which there is arranged a rotor (8) which is connected to the shaft (2, 3), is provided with blades (6), can be made to rotate about its axis (7) of rotation by means of a drive and the blades (6) of which extend outwards from a rotor shaft (33), the inside cross-section of the rotor casing section (4) being essentially circular in a plane extending perpendicularly to the axis (7) of rotation of the rotor (8); the axis (7) of longitudinal symmetry of the rotor (8) being horizontal; and an acute angle (90 DEG  @  alpha ), which points from the radial line in the direction of rotation being situated in each case between an imaginary radial line, which extends from the outer end of a blade (6) to the axis (7) of rotation, and the front (16), which is situated at the front in the direction of rotation (14), of a blade (6) and/or a tangent on the front (16) of at least one section of the blade (6). <IMAGE>
Patent DE-3113671-A1 (DE)
Title: Welding power source for pulsating current
Inventor: MAZAC KAREL
IPC: B23K9/09
Filed: 1981-04-04
Abstract: The invention relates to a welding power source for pulsating current, which is connected to an n-phase AC mains power supply. Said power source comprises essentially, as can be seen from Fig. 1, a transformer whose secondary winding (7-12) is configured in a double-star circuit, a rectifier element being provided in each branch of the double star and being controllable by means of a control signal in order to adjust its conducting period. This control signal can have superimposed on it at least one further control signal (which is adjustable independently of it) for each xth half-cycle of the AC voltage to be rectified (x = an integer). In addition, any desired number of rectifier elements can have additional, mutually independent signals superimposed on them. <IMAGE>
Patent DE-3116640-A1 (DE)
Title: Pneumatic position controller having a limit switch
Inventor: KEMMLER LOTHAR
IPC: H01H3/16
Filed: 1981-04-27
Abstract: The invention relates to a pneumatic position controller having a limit switch for mounting on pneumatic actuators, such as, for example, diaphragm valves, and consists essentially in that the limit switch is mounted on the position controller via an adapter, the outgoing air of the position controller being diverted into the open by way of the adapter and the housing of the limit switch.
Patent DE-3124363-A1 (DE)
Title: Method and device for correcting the angle of pitch of width-adjustable road-finishing beams
Inventor: RUGE HANS
IPC: E01C19/48
Filed: 1981-06-20
Abstract: The invention relates to a method for correcting the angle of pitch of width-adjustable road-finishing beams, in which a main beam supported on drawing arms bears laterally extendable adjusting beams. In order that main beams and adjusting beams work with the same angle of pitch in the case of different thicknesses of the installed courses of road-covering material, and consequently the readjusting work necessary for different installation thicknesses can be omitted, it is envisaged according to the invention that working cylinders supported on the chassis of the road finisher are held in a floating position during the operation of the road finisher and are additionally acted upon with a pressure of variable size which counteracts the weight of the main beam. In practice, these measures can be implemented by the supply line to the lifting side of the working cylinders being continuously supplied with oil, and by the oil surplus being removed via a controllable pressure-limiting device. The pressure-limiting device can be automatically remote-controlled by a transmitter with a probe. Fig. 2 is particularly suitable for clarifying the invention. <IMAGE>
Patent DE-3129808-A1 (DE)
Title: Method of testing transparent sheets of material
Inventor: HAUBOLD WOLFGANG
IPC: G01N21/89
Filed: 1981-07-29
Abstract: In testing window glass and other transparent sheets of material for defects included in the sheet, the sheet of material is scanned across its width with a flying light spot and the transmitted or reflected radiation is collected. The radiation is converted into electrical signals and evaluated, radiation emerging laterally from the sheet being additionally detected during the scanning cycle and converted into electrical pulses which are used to control the sensitivity of the evaluation. This detects foreign bodies or gas bubbles which are included in the sheet of material and which do not manifest themselves in the surface. The flying light spot is produced by a laser beam generator which emits radiation of a wavelength equivalent to the colouration of the sheet of material.
Patent DE-3130154-A1 (DE)
Title: Surface acoustic wave arrangement with integrated matching network
Inventor: GRASSL HANS-PETER DIPL PHYS
IPC: H03H9/02
Filed: 1981-07-30
Abstract: The matching networks normally used for the individual transducers of a surface acoustic wave arrangement (SAW) (1) are constructed in integrated form as electrode structures (3, 4) of the same technical type as the electrode structures of the transducers (2), the electrode structure of the matching network, including a delay line (3), together with the electrode structure (2) of the surface acoustic wave arrangement being arranged in a space-saving manner on one and the same substrate. <IMAGE>
Patent DE-3137883-A1 (DE)
Title: Method of insulating Hall-effect vane switches
Inventor: HABRICH REINER
IPC: H01L43/04
Filed: 1981-09-23
Abstract: To fabricate Hall-effect vane switches, the individual components (2) and the terminals (3), which have been introduced into a partable (dividable) tool (1) and positioned with auxiliary devices are encapsulated in a reaction-curable epoxy-resin compound (4) composed of   A) 2 parts by weight of a bisphenol epoxy resin having an epoxide value of 0.50 to 0.585 per 100 g, B) 2 parts by weight of a diglycidyl hexahydrophthalate having an epoxide value of 0.55 to 0.68 per 100 g, C) 6 parts by weight of a quartz flour coated with epoxysilane and having a particle size of 0.5 to 50  mu m, and D) 1-1.2 parts by weight of a cycloaliphatic diamine as hardener, the components A), B) and C) optionally taking the form of a premix. Preliminary curing is carried out in the tool for approximately 10 minutes at 150 DEG C and, after the tool has been opened, final curing is carried out for approximately 2 hours at 150 DEG C. <IMAGE>
Patent DE-3147029-A1 (DE)
Title: Device for monitoring the yarn tension
Inventor: HUCHZERMEYER CORD-HENRICH
IPC: D05C15/18
Filed: 1981-11-27
Abstract: A device for monitoring the yarn tension on a textile machine, such as a weaving machine, knitting machine, tufting machine or the like, has a group, corresponding to the number of yarns (12) to be processed, of identical leaf springs (25) which are retained at one end and which are equipped at their other end with a respective eye (26) for the run-through of the yarn (12). It has at least one light-source (28)/photocell (29) unit with a light barrier (27), each leaf spring (25) being pivotable into the range of the light barrier (27). In the event of a fault in the prestress of a yarn (12), the associated leaf spring (25) comes into the range of one of the light barriers (27 or 30), with the result that the textile machine is switched off immediately. <IMAGE>
Patent DE-3147453-A1 (DE)
Title: Current collector for route-bound electric vehicles
Inventor: ROGGE HEINZ-WERNER DIPL ING
IPC: B60L5/20
Filed: 1981-12-01
Abstract: A current collector for route-bound electric vehicles, such as locomotives, trams, buses or the like moving under overhead lines, is disclosed, in which, for the purpose of punctually detecting a necessary contact element change of the current collector, an optical waveguide is arranged along a wear limit, of the contact element, provided at a distance from the surface of the contact. The destruction of the optical waveguide when the predetermined wear limit is reached is converted into a warning signal which indicates to the driver the necessity of changing the contact element.
Patent DE-3147664-A1 (DE)
Title: Knife for making thin microscope sections, optical diffraction gratings, precision scales and microstructures
Inventor: BRUENGER WILHELM DR
IPC: G02B5/18
Filed: 1981-12-02
Abstract: A knife which is composed, according to the invention, of a single crystal of a boride of the rare earths, in particular of an LaB6, PrB6, NdB6 or ThB6 single crystal, and in which the so-called free area of the two faces forming the cutting edge is formed by a low-index crystal face of the single crystal. This may, for example, be a naturally grown (100) face or a (100) face obtained by cleavage.   <IMAGE>