baber/WOPTO huggingface dataset:
Patent DE-3900139-A1 (DE)
Title: Device for filtering an air stream which is fed into a passenger compartment of a vehicle
Inventor: SMEKTALA ROLF PETER DIPL ING
IPC: B03C3/10
Filed: 1989-01-04
Abstract: In known devices, deep-bed filters are used to separate off the particles carried along in the air stream. These filters have a continuously rising loss of pressure, as result of which the filters have to be changed at regular time intervals. In the new device, an electric filter (9) is provided which contains a spray electrode (10) and an essentially cylindrical, rotatably mounted precipitation electrode (11) which is provided with a rotary drive and to which means (40) for producing a flow of a cleaning fluid (15) flowing along its inner face are assigned. Device for motor vehicles. <IMAGE>
Patent DE-3900303-A1 (DE)
Inventor: LECHNER ULRIKE DR
IPC: B27K3/34
Filed: 1989-01-07
Abstract: The invention relates to a process for impregnating wood with organosilicon compounds of the general formula  R-Si(OR')3'  in order to reduce the water absorption of wood. <IMAGE>
Patent DE-3903525-A1 (DE)
Title: Mounting device for crutches, especially on hospital beds
IPC: A61H3/02
Filed: 1989-02-07
Abstract: Mounting device for crutches, especially on hospital beds, whose structure forms tubular frames. The mounting device comprises two pairs of clamps [1, (1'), 2, (2')] which are fastened on a tubular member (4) via screwed connections. The structural characteristic of a support member unit (5) is a baseplate (16) and a fastening rail (17) that forks off from the latter at an angle. Another baseplate (36) that is completely identical to the baseplate (16) has a shell-shaped part-member (37). Both baseplates (16) and (36) are inserted and fastened in the same manner in the pairs of clamps [1, (1'), 2, (2')]. For this purpose, both baseplates (16) and (36) have symmetrically arranged identical guide bolts (27) which during assembly are immersed in continuous bores (7), (7') of guide sleeves (6), (6'), so as to coincide with the latter, located on the pairs of clamps [1, (1'), 2, (2')] and then each form a unit by means of tightenable fastening screws (12). A number of fixing elements (20) are fastened at the desired site on the fastening rail (17) which forks off at an angle. The different arrangement is made possible by a symmetrical guide slot (24) extending in the longitudinal direction in the fastening rail (17). The fixing elements (20) have a differently shaped basic and supplementary base (26), (30) and (31) from which [lacuna] toward the free end ... Original abstract incomplete. <IMAGE>
Patent DE-3904978-A1 (DE)
Title: Sealing ring, in particular metal sealing ring
Inventor: BOLL WOLF DR ING
IPC: F16J15/16
Filed: 1989-02-18
Abstract: A sealing ring, in particular metal sealing ring, is to be prevented, when inserted in an oil-filled annular space between a rotating shaft and a hub bore surrounding the latter concentrically, in which annular space it is to separate spaces axially from one another, from working in the mixed-friction region. For this purpose, the sealing ring is provided on its sliding sealing surface with pocket-shaped recesses which cover only part of the annular extent not running in the circumferential direction, thus guaranteeing a hydrodynamic lubrication. On the non-sliding sealing surface, the ring can be provided with drainage grooves lying in the circumferential direction, in order thereby to strengthen its firm contact.
Patent DE-3910851-A1 (DE)
Title: Chime circuit
Inventor: BOESER WERNER
IPC: B06B1/02
Filed: 1989-04-04
Abstract: In the case of an electronic chime supplied from a low-voltage transformer via a diode, in order to actuate which chime the diode is shunted using a button, so that a transistor is driven by the half-cycle which is now transmitted, which transistor connects the control input of the chime IC for supplying the control signal to the operating voltage, difficulties occur during assembly in the form of incorrect switching due to wrong polarities. In order to eliminate these assembly errors, it is proposed to connect the supply wires of the chime circuit to a bridge rectifier which outputs the operating voltage.
Patent DE-3914696-A1 (DE)
Title: Method of supporting the anchor head of a tensible grouted anchor on an abutment and grouted anchor for carrying out this method
Inventor: REICHERT ERNST
IPC: E02D5/76
Filed: 1989-05-03
Abstract: The method of supporting the anchor head (10, 10') of a tensible grouted anchor (1) on an abutment (7) provides for the anchor head (10, 10') located at a distance from the abutment (7) to be supported by a spacer after the re-tensioning of one or more tension members (3). A hard granular or hardenable material is fed as spacer into the intermediate space between abutment and anchor head. <IMAGE>
Patent DE-3920449-A1 (DE)
Title: Self tensioning gas sealing piston ring - has top grooved side, and is able to tilt
Inventor: STECHER FRIEDHELM
IPC: F16J9/20
Filed: 1989-06-22
Abstract: The self-tensioning, gas-sealing piston-ring is used in an IC engine. Its top side tilts towards the top groove side of the piston so that the piston ring touches the groove flank in the middle right inside. The underneath flank is tilted towards the groove flank so that the groove flank is touched in the middle to the inside. USE/ADVANTAGE - The piston ring is designed so that oil consumption cannot rise; it does not wear or run dry.
Patent DE-3933588-A1 (DE)
Title: Concrete shuttering and formwork - for prodn. of reinforced concrete rooms with variable dimensions and uses vertically and horizontally adjustable internal frame system
Inventor: BAUER FRANZ DIPL ING
IPC: B28B23/00
Filed: 1989-10-07
Abstract: The system frame comprises an internal shutter (4) and an external shutter (5) which are adjustable to the dimensions of the room dimensions. External shutters (5) comprise 4 wall shutters (6,7,8,9). Wall shutters (6,9) constitute constitute the outsides of the sidewalls and wall shutters (7 and 8) constitute the outside shutters for the wall with the door opening and the rear wall in order to position and erect the wall shutters (8 and 9) rollers (13) on secured rails are used. To move wall shutters . and 7) rollers (14) located on a support platform (15) are used.  The external deck side shutter (17) may also be of variable size. The internal shuttering consists of a frame (18) and expandable steel plate wall shutters (19). A filigree board (10) is attached the frame (18) to form the soffit shutter to the deck (3) and the reinforcement is integrated with the structural reinforcement component of the structure. Height variations are accomodated by means of insert blocks (23) on the underside of the walls. The main frame (18) has 2 internal adjustable braced frame supports (24,25) one fixed and one movable attached to 2 sliding steel shutter members (26,27) and special internal corner pieces (28,29) which overlap the members (26,27). Adjustment can thus be achieved on the internal walls. USE/ADVANTAGE - Transformer houses, insitu cellular rooms and garages. All components are removable and reusable.
Patent DE-3935179-A1 (DE)
Inventor: WOLFF ROBERT
IPC: B24B23/00
Filed: 1989-10-23
Abstract: Accessory devices for a hand driven tool such as, for example, an angle grinder with the accessory device including an eccentric unit and a resilient coupling for a toolholder whereby an oscillating, elliptical path of movement is imparted to the toolholder in an operating range of the hand driven tool. The eccentric unit and the resilient coupling form one module with the toolholder forming an independent structural assembly thereby enabling the toolholder to be readily exchangeable.
Patent DE-3938309-A1 (DE)
Title: Optical detector for laser beam in printers - uses length of optical fibre to detect beam which may be deflected through angle
Inventor: IWAMA MASATOSHI
IPC: G02B6/02
Filed: 1989-11-17
Abstract: A laser printer system has the output of a laser (1) directed onto the surfaces of a polygon mirror (2) that is rotated at a controlled rate.  As the mirror rotates the beam is used to scan along the length of a photosensitive drum (3).  A reference position for the scanning beam is provided a detector (11,12).  The detector is in the form of a short optical fibre (11) that emits a fluorescent output when activated. The optical fibre output causes a photo detector to respond (12). The laser is received by the fibre if the polygon is tilted, thus causing the beam to be deflected. ADVANTAGE - Allows laser to be detected if deflected vertically.
Patent DE-3942407-A1 (DE)
Title: Positionally adjustable headrest for armchair - is attached by pivoted links which prevent damage to upholstery
Inventor: SCHEFTHALER ALOIS
IPC: A47C20/08
Filed: 1989-12-21
Abstract: The armchair has a positionally adjustable headrest (2) attached to the backrest (6) of the chair. The backrest (2) is attached at each side to a bracket (12) which is fastened to a plate (8) fixed to the side of the backrest. The fastening between bracket (12) and the plate (8) consists of four pivoted links (16, 18, 20, 22). These links (16, 18, 20, 22) control the movement of the headrest so that the covering of the upholstery is not stretched when the headrest is folded from its upper to its lower position. The idea is applicable to settees, couches est. USE/ADVANTAGE - The headrest can be adjusted without stretching or damaging the upholstery.
Patent DE-4002039-A1 (DE)
Title: Cutting holes in wooden panel by variable laser beam - applying beam at points along pattern and fitting coloured stoppers or other decorative markers into holes
Inventor: PELZ PETER
IPC: B44C3/00
Filed: 1990-01-24
Abstract: A device separates a first part of the wooden workpiece from a second part by, e.g. cutting. This cutting device may be a laser having a beam whose energy can be controlled. Lines depicting letters or symbols may be marked on the workpiece and the laser beam used to cut along these lines. The cutting may take the form of burning holes at points along the lines. These holes may pass completely through the wood (10) which may be a board or panel. The holes may be fitted with transparent stoppers (16) and LEDs (18) may be mounted on the reverse side of the panel over the holes. Holes may be prevented from passing right through the panel by incorporating a reflecting (silver) foil coplanar inside the panel to reflect the laser beam after it has cut down to the depth of the foil. @(5pp Dwg.No. 2/3)@.
Patent DE-4002405-A1 (DE)
Title: Linear workpiece transport mechanism for grinding machine - has synchronised mechanical linkages to clamp and move workpiece through work stations
IPC: B65G25/02
Filed: 1990-01-27
Abstract: The linear workpiece transport mechanism is for use with series production machine tools, especially grinding machines, having a number of equi-spaced work stations. Such machines are often based on rotary indexing of the work but become wasteful of space as the number of stations increases. The mechanism has a rail (5) on which are mounted gripping jaws (6) corresponding to the work stations (2) and input station (1). Two synchronised systems of mechanical linkages (A,B) are used, one to provide the forward and lifting motion of the rail (5) and one to open and close the gripping jaws (6).
Patent DE-4009372-A1 (DE)
Title: Repeater firearm safety device - has block with security lock eccentric and bolts in magazine
Inventor: CZECH RUDOLF
IPC: F41A17/44
Filed: 1990-03-23
Abstract: The safety device locks up a repeater firearm, having a block (3) with security lock (12) in the magazine (1). An eccentric (11), a stop bolt (8) and a locking bolt (7) are also contained in the magazine. There is a feed lug (3a) or protrusions (3b) on the top of the block. The block, in which the stop bolt moves, can be of metal, or of heat-resistant cast resin, in which the hardened steel bolt is cast. ADVANTAGE - Maximum protection against unauthorised use by children or criminals.
Patent DE-4010278-A1 (DE)
Inventor: KOHMOTO SHINSUKE
IPC: G02B7/10
Filed: 1990-03-30
Abstract: A zoom lens barrel has front and rear lens groups (A, C) for zooming and central lens group (B) for focussing and a cam ring with two cam grooves (14a, 14b) for lens groups (A and B) which has a zooming section (???1) and a lens accommodation section (???2) and which rotates to control the position of the lens groups. Two lens groups (A and C) move together in the zooming section via engaging portions (23a, 30a). Portions (30a, 23a) are disengaged when rollers (C') reach bottom of guide groove (18c) so that in the lens accommodation section the front lens group (A) and central lens group (B) come close to the rear lens group (C) and thus decrease the overall length of a zoom lens in a compact camera. There is also disclosed a barrier mechanism (Figs. 7 and 8) of the lens barrel including a pair of barrier plate assemblies which open and close an opening of the lens barrel. <IMAGE>
Patent DE-4015546-A1 (DE)
Title: Greasing unit for metal e.g. steel strip - has strip passing between hollow rollers with paperboard bodies covered by fibre fleeced material saturated with polyurethane foam
Inventor: BOLENDER KLAUS
IPC: B05C1/10
Filed: 1990-05-15
Abstract: Greasing unit for metal strip has at least two rollers through which the strip passes. Each roller has an outer soft storage layer fed with greasing material from within the roller (5) and has the novelty that the hollow support body of each roller comprises a paperboard tube. The storage layer (6) on the tube is made of fibre fleece material satd. with a polyurethane foam having an open pore structure. This material is slid onto the tube as ring-shaped sections. The polyurethane foam effects the rigid coupling of the material to the tube. Specifically in order to ensure uniform delivery of the greasing agent to the e.g. steel strip, the interior of the roller body (7) is maintained under a gas pressure that is just greater than atmospheric pressure, e.g. 0.2 bar. ADVANTAGE - The simplified construction for the greaing roller is easy to install, operates efficiently and has a long service life.
Patent DE-4017749-A1 (DE)
Title: Low flow resistance liq. cooling body - esp. for cooling semiconductor device includes electrically insulating, thermal conductive material with cooling channels etc.
Inventor: BAUMANN HEINRICH DR
IPC: H01L23/473
Filed: 1990-06-01
Abstract: A liq. cooling body for cooling an electrical component (esp. a semiconductor device) in good thermal contact with the body, the body consisting of an electrically insulating but thermally conductive material and having one or more cooling channels provided with connection nozzles. The body (1) has internal pins (15) which extend perpendicularly between its flat faces in the coolant flow path and which are bonded to at least one of the faces. ADVANTAGE - The cooling body has reduced flow resistance combined with a high heat transfer capacity.
Patent DE-4020079-A1 (DE)
Inventor: BOEHME RALF
IPC: C08G101/00
Filed: 1990-06-23
Abstract: A process for the preparation of cellular plastics, preferably rigid structural polyurethane foams, by the polyisocyanate polyaddition process involves reacting  a) organic and/or modified organic polyisocyanates with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and optionally  c) low-molecular-weight chain extenders and/or crosslinking agents,  in the presence of d) blowing agents from the group comprising tertiary alcohols (di), preferably tertiary butanol, or a mixture of at least one tertiary alcohol (di) and water (dii),  e) catalysts and optionally f) assistants and/or additives. a
Patent DE-4021972-A1 (DE)
Title: Electronic module mounting - has front panel of main housing with cross rails for securing module plates
Inventor: JOIST MICHAEL
IPC: H05K7/14
Filed: 1990-07-12
Abstract: A module mounting system for electronic equipment in a housing is based upon front panel fixing. The front of the housing has cross member rails (1, 2) that are located at the top and bottom. Each rail a 'T' cross section slot (7) that receives a strip (8) with threaded holes (9) spaced at intervals along the length. The panel of modules (4, 5) has pins (13, 14) that locate within the threaded holes. Adaptors (15) provide support for circuit boards (17). Contact strips (24) can be provided if required. ADVANTAGE - Simplifies front panel mounting. Aesthetically effective.
Patent DE-4022185-A1 (DE)
Inventor: LENHARDT KARL
IPC: E06B3/673
Filed: 1990-07-13
Abstract: To fill insulating glass panes with a heavy gas, one of the glass panes (40) from which the insulating glass pane is formed is at first only partly joined to the other glass pane (42) during assembly and it is bent along one edge to form a temporary, slit-shaped opening between the glass plate (40) and the spacer (41), through which a heavy gas can be introduced into the space inside the insulating glass pane.
Patent DE-4025607-A1 (DE)
Title: Electrically conducting shock absorber pedestal for office chair - is provided with electrically conducting seat carrier with seat surface and base cross fixed at chair column mounted rotatable with support body
Inventor: METZDORF MANFRED DIPL ING
IPC: A47C3/30
Filed: 1990-08-13
Abstract: The shock absorber has an electrical discharge connection (6) consisting of, e.g. a flexible earthing cable and a ball (14) making contact with the floor. The connection (6) is fixed at the piston rod (7). The electrical discharge connection (6) can be fixed at the cylindrical container (1) as well as an element for adjusting the height. The electrical discharge connection is designed as a spring bracket (6). The spring bracket has a displacement (15). The height adjusting element is designed as a spiral spring (9) clamped between the carrying plate (4) of the chair column (2) and the contact body (10). USE/ADVANTAGE - Shock absorber cylinder esp. for office chair provided with electrically conducting circuit for discharging static electricity generated e.g. by rollers. Economic and lasting reliable connection between seating surface and floor is achieved, avoiding use of insulating material or lacquer.
Patent DE-4028814-A1 (DE)
Title: Gas or electric cooker for narrow kitchen -  has cooking part with hob withdrawn under working panel by being pushed in and out in manner of cupboard drawer
Inventor: SPITZER WALTER DIPL ING
IPC: F24C15/10
Filed: 1990-09-11
Abstract: The switching panel (6) is placed in the front plane (8') of the baking oven door in the pushed-in position of the cooking part (5). The cooking part (5) is located on telescopic rails (7') and the telescopic rails are mounted at supports (23). All the operating elements are fitted in the movable cooking-boiling part (5). The rear edge (5') of the cooking part in the pulled out position reaches in front of the edge of the working panel (1). The discharge of the cooling air results through the insertion space (2) of the cooking part (5). The end flap (16) is swivellable at the switching panel (19) and is held by means of a magnet (18) or a clamp. ADVANTAGE - Gives improved and more ergonomic operation and control and enables limited space to be better utilised.
Patent DE-4029490-A1 (DE)
Title: Vehicle hydraulic piston-cylinder vibration damper -  has secondary piston fitted in guide tube inside main piston rod
Inventor: KNECHT HEINZ
IPC: F16F9/18
Filed: 1990-09-18
Abstract: The vehicle hydraulic piston/cylinder damper has a secondary piston (2) fitted in a guide tube (8) inside the main piston rod (1). The secondary piston is connected via a rod (3) passing through the main piston (7), to the cylinder base (6). - Two pressure ports (15, 16) connect to opposite sides (12, 13) of the secondary piston; one directly and the other via a ring chamber between the guide tube and main piston rod.
Patent DE-4029657-A1 (DE)
Title: Direction indicator for motor vehicle -  has vibrators in steering wheel and seats with time delay circuit
Inventor: SCHMITT WERNER DIPL ING
IPC: B60Q9/00
Filed: 1990-09-19
Abstract: The rim of the steering wheel is fitted with vibrator pads (V) which follow the direction indicator operation. The vibrators can be backed by visual indicators on the dashboard and by buzzers. They are operated with a time delay circuit to switch off after a set period, when only small steering movements are used, e.g. for overtaking. The vibrator pads can also be fitted to the seats to give a tactile indication of the flasher operation. Another use for the seat pads is to provide relief in long journeys by massaging at set intervals. ADVANTAGE - Improved indication of flasher operation and improved driving comfort.
Patent DE-4031909-A1 (DE)
Title: Assembly to recognise the form of advancing solvent -  in thin film chromatography irrespective of external time frame, having sensor to locate carrier plate placed in sealed chamber
Inventor: BARON LOTHAR
IPC: G01N30/95
Filed: 1990-10-08
Abstract: Thin film chromatography requires the precise fixing of the advancement of the solvent front by means of a carrier plate and sensor submerged within a solvent bath, but the moment at which the front passes a given point is difficult to pinpoint outside a given time frame. The novelty is that the carrier plate is placed in a sealed chamber within a housing and that the lowest edge is submerged below a drying flow track in the solvent bath so that the carrier plate may be located from a sensor outside the housing. USE/ADVANTAGE - It is claimed that the arrangement facilitates the determn. of the position of the solvent front without reference to an external time frame, with no other changes in standard laboratory procedures. It is further claimed that the arrangement facilitates the use of a microprocessor to monitor and control the operation.
Patent DE-4038441-A1 (DE)
Title: Halogen lamp with pivoted carrier arm - has two relatively insulated conductor arms associated with respective halves of ball linkage
Inventor: HEISE VOLKER
IPC: F21V21/29
Filed: 1990-12-01
Abstract: The pivoted carrier arm supports the light socket and comprises a pair of relatively insulated current conductor arms (4,5) supported by a common ball linkage (6). The latter is in 2 halves (7,8) each electrically connected to one of the current conductor arms (4,5). Pref. the latter are embedded in a layer of an insulating material between the two ball linkage halves (7,8), each of the latter having a contact pin which projects through the insulating material and fits into the conductor arm (4,5). ADVANTAGE - Allows movement of conductor arms in all directions for obtaining required lamp angle.
Patent DE-4101168-A1 (DE)
Title: Liq. filter for percussion discharge of solids from multiple candle - using fixed partition plate with spring-loaded candle mountings
Inventor: BUGARSKI MICHAEL
IPC: B01D29/11
Filed: 1991-01-17
Abstract: Liq. filter having a housing divided by a partition plate into a dirty and a clean chamber, with filter candles rigidly extending into the dirty chamber supported from the partition plate and each with a riser tube extending through the candle holes in the partition plate into the clean chamber, and with a striker device for discharging the filter candles, with the novel features that, the partition plate (2) is rigidly secured within the housing (1), that the riser tubes (9) of the candles (7) extend thro' the candle holes (6) with a degree of moveable play, that each has a compression spring (23) acting between the partition plate (2) and the end of the riser tube (9) within the clean-side chamber, that the striker device (11) possess an impingement plate (14) moveable against the end of each filter candle, and that the riser tube (9) carries at the candle engaging side of the partition plate, a seal ring (16) which effects sealing against the seat (6a) in the candle hole (6). USE/ADVANTAGE - A liquid filter with a solids discharging mechanism involving minimal percussive force on the filter candles and which avoids sealing difficult between the candles and the partition plate