baber/WOPTO huggingface dataset:
Patent FR-2265977-A1 (FR)
Title: Purifcn. of exhaust gases - using mixed catalysts of polymetallic chromites and gp. VIII metals on a special alumina carrier
IPC: B01J23/652
Filed: 1974-03-27
Abstract: Catalyst in particulate form consists of a homogeneous mixt. of (1) 75-85 wt. % polymetallic chromite on a special alumina carrier, and (2) 25-15 wt.% Pd. on a special alumina carrier, in which (1) contains 10-25 wt.% chromite with ratio of CuO to Cr2O3 of 2:1, (2) contains 0.005-0.15 wt.% Pd, and the carrier is made from gamma-alumina by calcining for at least 2h. at 927-1038 degrees C to a porous alumina with surface area 65-90 m2/g. (1) and (2) are calcined for >=2H. at 538-871 degrees C in dry air before mixing. Also exhaust gas purifcn. using catalysts in which (1) contains 3-25 wt.% chromite, (2) contains 0.005-0.1 wt.% Ru, Rh, Pd, Os, Ir and/or Pt, and the carrier is made from gamma-alumina of bulk density over 0.70 g/ml and surface area >=80 m2/g and itself has surface area >=65 m2/g., bulk density 0.65-0.75, compressive strength 4.5-9.0 kg, impact frictional loss less than 5% and volume shrinkage less than 10%. The catalyst is used in treatment of exhaust gases from i.e. engines, to convert CO and hydrocarbons to CO2 and water. It is stable under operating conditions of shock and vibration, and exposure to large volumes of acid gases, and retains its activity and selectivity over large periods of use.
Patent FR-2278643-A1 (FR)
Title: Cement clinkering plant with preheater - having several cyclones has reheaters to improve fuel utilisation
Inventor: PACAULT PIERRE HENRI
IPC: F27B7/20
Filed: 1974-05-31
Abstract: Cement mfg. plant comprises a hearing furnace, a combustion chamber above the furnace a multistage preheater where finely divided material is suspended in smoke from the furnace and the combustion chamber, and a clinker coolant plant. At least two indirect exchange air reheaters are arranged in series in the path of the air feeding the combustion chamber and heated by part of the smoke from the furnace and the combustion chamber so as to exchange in countercurrent between the air and the smoke. At least one of the reheaters is placed at the exit of an intermediate stage of the preheater. Improved recovery of heat from the exit fumes of the furnace is achieved.
Patent FR-2283974-A1 (FR)
Title: Spool housing for sutures to be held in hollow of hand - allowing only desired length to be removed
IPC: A61B17/06
Filed: 1974-09-03
Abstract: Spool housing for sutures comprises a cylindrical receptacle having a central vertical shaft for receiving the suture spool. The suture passes through a slot and an aperture out of the housing which includes an extension supporting a split ring which is placed around one of the fingers of the surgeon. Pref. the spool is of transparent material, to allow the surgeon to see the remaining length of the suture material. The housing is held in the surgeon's hand while leaving him free to use all ten fingers.
Patent FR-2289043-A1 (FR)
Title: Forming switch with multiple contact combinations - has action bar and main frame receiving contact carrier in one of two positions
IPC: H01H11/00
Filed: 1974-10-24
Abstract: The switch has three parts which are a main frame (2) an action bar (4) and a contact carrier (3). The contact carrier has a pair of open contacts and may be inserted into the main frame in two positions (6a, 6b). In one position the contacts project into a window in the action bar and remain separated until the bar is depressed. In the other position, which causes the bottom contact to be deflected by the bottom edge of the window, the contacts are closed until the bar is depressed. This permits switches to be assembled with differing contact arrangements with a minimum stock-holding.
Patent FR-2290143-A1 (FR)
Title: Plant pot watering sprinkler head - has high speed jet striking uneven surface distributing through large diameter outlets
IPC: A01G25/02
Filed: 1974-11-05
Abstract: The head is for watering plants in pots, trees etc., from a pipe under pressure onto which it fits. It has a sprayer (2) delivering a jet of previously filtered water at relatively high speed so as to prevent choking. This jet strikes a suitably shaped surface with protrusions, directing it through a number of outlets of relatively large cross-section (6) over which it is proportionately distributed. Pressure at each outlet is small or nil, due to the large outlet diameter. The head can have an annular space between the base and the rear end of the sprayer where filtering is effected, this communicating via lateral ports with the central sprayer bore.
Patent FR-2260032-A1 (FR)
Title: Reduction gearing for single wheel hydraulic drive - has two stage epicyclic gearing
IPC: F16H1/46
Filed: 1975-01-28
Abstract: The main body of the gearbox (1) is mounted solid with the hydraulic motor and has the drive shaft passing through a central bore (10). A driven hub (4) on which the wheel (6) is fixed, revolves round the body on two taper bearings. The first reduction is made from a spur gear 17 on the end of the drive shaft, via a crown wheel (7) solid with the hub, to three planet gears (20) on a carrier (21) solid with a gear (23) which revolves freely on the drive shaft. This drives a second epicyclic train to a second crown wheel (8) solid with the hub, and gives the reduced final drive.
Patent FR-2301279-A1 (FR)
Title: Set of toy building blocks - has solid magnetised blocks and hollow magnetic blocks
IPC: A63H33/04
Filed: 1975-02-18
Abstract: A set of toy building blocks comprises magnetic blocks (1, 2, 3) and solid magnetised blocks (4) which have four rectangular and two square faces or which are pyramidal. The blocks (1, 2, 3) are hollow and can be of rectangular or square section and of various lengths. A solid block (4) is placed between two hollow blocks and the required structure is built up. Blocks are held together by the magnetic attraction only.
Patent FR-2308321-A1 (FR)
Title: Maternity trousers with front gusset for adjusting waist size - altered by adjusting length of belt section above gusset
IPC: A41D1/21
Filed: 1975-04-25
Abstract: Maternity trousers, or other articles of clothing such as skirt, blouse, etc. allowing adjustment of waist size as desired, comprise in the abdominal region a gusset which becomes wider towards the waist, and means for adjusting the degree of opening of the gusset. The adjustment means may consist of a belt section and two rings attached to the waistband of the trousers on each side of the gusset, each end of the belt section coacting with one of the rings. Alternatively, one end of the belt section may be stitched to the waistband of the trousers on one side of the gusset, while a ring is attached to the waistband on the other side for coacting with the free end of the belt section.
Patent FR-2310299-A1 (FR)
Title: Magnetic tape air bearing - has openings in side of cylinder covered by wire mesh for contactless support
IPC: B65H23/24
Filed: 1975-05-06
Abstract: Magnetic tape making plant employs an air bearing which supports the moving tape without contact, consisting of a cylinder closed at both ends (1). Air is supplied through an inlet connection (6) and escapes through one or more openings (7, 8) in the side of the cylinder. The openings extend over that part of the cylinder surface over which the tape passes. The openings are covered from within by a metallic wire mesh (9) held in place by a spring (10). The spring is of a helical type and its free diameter is somewhat larger than that of the cylinder. The openings on the cylinder can be in the form of a helix laid around the surface of the cylinder.
Patent FR-2280487-A1 (FR)
Title: Mould for pressing tapered pipe connectors - uses envelope and core with straight and tapered lengths
Inventor: SMEETS HEINRICH
IPC: B28B21/54
Filed: 1975-07-30
Abstract: The mould is for the vacuum pressing of tubular diameter reducing connectors i.e. lengths of moist ceramic material, esp. clay, and embodies an external envelope and a core each constituting straight and tapered lengths. The tapered length of the envelope is subdivided longitudinally and the straight rear length of the core being longitudinally displaceable. The two envelope sections are joined by double tongue and groove assemblies. The core taper is longer than its envelope counterpart and the envelope section joint embodies a cutter for mould separation, and the press surfaces of the core are lined with polytetrafluorethylene or chrome.
Patent FR-2320428-A1 (FR)
Title: Radial cylinder stirling engine - has cylinders connected to rotary casing and sliding over annular members forming gas passages
IPC: F02G1/043
Filed: 1975-08-04
Abstract: The stirling engine has four radial cylinders positioned between rotating forming a casing. Pistons a slidable in the cylinders, the heat energy being supplied to the engine by heat exchanger with a gas which circulates through the cylinders. The casing is finned for cooling. The rods of the pistons are connected to a central shaft, the crank of this shaft being optionally replaced by an eccentric. The gases are exhausted from the cylinders to pass through passages connected to the heat exchangers, these passages being provided in hollow annular members allowing the cylinders to rotate.
Patent FR-2326823-A1 (FR)
Title: Telephone exchange interconnecting unit - has digital interpolation filter in multiplexed line and analogue filters in each voice line
Inventor: GIRY P
IPC: H04Q11/04
Filed: 1975-10-02
Abstract: The interconnecting unit for user lines of a telephone exchange is used in time multiplexed system with 30 channels. The interconnecting unit (CR), receives a coded train of pulses. It has a digital unit (TN) and a digital-analogue decoder (N/A)n). The signals are then demultiplexed in a demultiplexer (DRn), demodulated in demodulators (Deln,...,Dexn), filtered in low-pass analogue filters (FAR1n,...,FARxn) and then supplied to user terminals (b1,...,Bx). The digital unit (TN) has two functions: it has an interpolation function and a filtering function. It provides band filtering and attenuation for all the channels, and it also increases the frequency of the signals to be filtered. It operates up to a set frequency. The analogue filters (FAR1n,...,FARxn) provide filtering beyond the set frequency.
Patent FR-2332540-A1 (FR)
Title: Digital phasemeter with counting system - measures zero crossings of two signals to determine phase angle, storing result in memory
Inventor: MEYER JEAN PIERRE
IPC: G01R25/08
Filed: 1975-11-18
Abstract: A phasemeter is described which comprises a digital counting system of two durations: one duration relating to the time between the zero crossing of a first periodic signal and the zero-crossing of a second periodic signal; and the second duration relating to the time between two zero crossings of one of the signals. A digital memory stores the result (T1) of the first duration and a second digital memory stores the result (T2) of the second duration. A digital value representing the quotient T1/T2 is then produced, this representing the angular phase shift between the two periodic signals.
Patent FR-2331286-A1 (FR)
Title: Bakery automatic dough divider - has high output of unstressed dough pieces of adjustable uniform weight
IPC: A21C5/00
Filed: 1975-11-14
Abstract: A dough hopper is mounted above a conveyor on to which divided dough pieces are discharged from the hopper outlet. Between the hopper outlet and the conveyor band, an automatic sensing device is fitted to detect dough extending as an extrusion from the open outlet of the hopper. When this detection is made, a dough cutter is actuated to shut off the outlet and detach the suspended extrusion as a dough piece to drop on to the band. The sensing device can be adjusted so that cut-off is actuated for different extrusion lengths, i.e., to adjust dough piece weight. The sensing device pref. comprises a light source and photo-electric cell. The dough hopper can pref. be sealed and the dough put under slight pneumatic pressure. The dough cutter is pref. a guillotine blade actuated by a double effect pneumatic power cylinder. Used as automatic dough divider for industrial bakeries. Large scale prodn. of dough pieces of adjustable, uniform weight which have not been subjected to dividing stresses harmful to the dough is possible.
Patent FR-2336527-A1 (FR)
Title: Impermeable sheets of partially impregnated nonwoven fabric - to inhibit rupture by crack propagation from faulty substrates
IPC: E04D11/02
Filed: 1975-12-23
Abstract: Impermeable covers 0.5-5 mm thick comprising a fabric coated on one or both faces with a layer of impermeable material which only partially impregnates the fabric structure, to leave a core stratum of the fabric free from impregnation. Used for mfr. of covers for lining reservoirs, sealing walls, damp course layers for foundations etc. For paved areas, the covers may be overlaid with a thin layer of filled resin or by slabs of concrete, opt. faced on their underside with a layer of insulating material. Covers may be=5 m wide. The core layer interrupts crack propagation through the cover and across the outer impermeable layer, e.g. if the substrate cracks, e.g. due to shrinkage of concrete The fabric is a non-woven material based on natural or synthetic fibres, pref. of 'BIDIM' (RTM-Rhone-Poulenc polyester). The coating material may be deposited from an (aqueous) emulsion, pref. 'DAKFILL' (RTM). Covers may carry a top dressing of filled resin 2-3 mm thick, specifically of 'MATCODAL' (RTM).
Patent FR-2335687-A1 (FR)
Title: Wall bracket for sun awning - has housing base with groove for removable rigid rod holding canvas taut
IPC: E04F10/06
Filed: 1975-12-17
Abstract: The wall bracket is for the fastening of fittings of a pre-assembled awning. It has a C-shaped housing to accommodate profiled sections, to which are fastened the supports of the rolling-up tubes and the tensioning arms of the awning. The base of the housing has a groove, extending from front to rear, to accommodate a removable rod. The rod extends in a horizontal direction and extends the housing to the front. The rod serves as a temporary support for the profiled sections (5), before this is inserted into the housing of the bracket. The depth of the groove is larger than the thickness of the rod, the front edge of which is bent over.
Patent FR-2308042-A1 (FR)
Title: Plastic or rubber pipes for central heating systems - internal or external metallic coating prevents diffusion of air
IPC: F16L11/12
Filed: 1976-04-14
Abstract: Modern building methods employ flexible pipes of plastic or rubber for the central heating systems. These pipes reduce installation time as they can be easily inserted into channels and holes in the walls of the buildings. However, the diffusion of air from the surrounding atmosphere through the pipe walls causes corrosion of the boiler of the heating system. This corrosion can be at least greatly reduced if not entirely eliminated by providing the pipes with either an internal or external metallic coating which prevents this diffusion of air through the pipe walls and so removes the cause of boiler corrosion.
Patent FR-2348412-A1 (FR)
Title: Brake for automatic gear box - has brake piston return springs fitted between inner and outer skirts
IPC: B60T1/00
Filed: 1976-04-16
Abstract: The automatic gear box consists of an epicyclic gear train (P) and a brake (F). The brake piston (15) slides in the annulus (16) of the housing (1). The brake piston (15) has two skirts (13) (14) which abut against a disc (10) through which the braking force is applied to the discs (7, and 8). The inner skirt of the piston (15) is provided with a number of slots to receive the radial lugs (18a) of the ring (18) which is fixed to the casing (1a) by bolts (17a). Return springs (9) are fitted between the piston skirts and abut against the lugs (18a). This arrangement of brake return springs provides a more compact design than the usual method of using a diaphragm spring.
Patent FR-2349411-A1 (FR)
Title: Adjustable wrench for square headed nuts - has jaw opening formed by four identical sliding quadrilateral bits in square handled housing
IPC: B25B13/44
Filed: 1976-04-30
Abstract: The adjustable two-handled wrench is for use on square-headed rotary hand tools e.g. a thread cutter. The approx. square jaw-opening (10) of the wrench is formed by four quadrangular bits (6 to 8). The bits slide relative to one another to vary the size. of the opening (10) and each includes at least one right-angled corner. The slides subtending the right-angle align parallel to the diagonals of the jaw opening (10). The bit details obviate acute angles liable to fracture. The wrench has diametrically opposed handles (2, 3) emanating from an internally square (4) housing (1) contg. the bits (6 to 8). The bits are arranged whereby displacement of a master bit (6) along the corresponding inner housing wall causes the other bits to slide. In this manner the jaw opening (10) is increased or reduced in size.
Patent FR-2352718-A1 (FR)
Title: Bottle closure cooperating with groove in bottle neck - has press down closing ring kept in closed position by tear off tab between ring and closure flange
IPC: B65D55/08
Filed: 1976-05-26
Abstract: The bottle neck is fitted with a groove (1a) near the top. The stopper is made up of a circular top piece (2a) and a cylindrical portion (2d) which is fitted with an inner ring to match the groove (1a). The outside of the cylinder has a flange (2g) at the lower end and a vertical land (2f) at the same level as the groove. The outer ring (3) has two external tabs (3f). The outer cylinder is able to move upwards towards the upper flange of the stopper. In the closed position the outer ring presses on the land (2f) and forces the ring in the groove. The tear off tab (4a) keeps the outer cylinder in the closed position.
Patent FR-2331082-A1 (FR)
Title: Quartz oscillator alarm clock - has alarm source connected to frequency divider output and includes manual selector switch
IPC: G04G13/02
Filed: 1976-10-28
Abstract: The electric alarm clock has a quartz oscillator (1), connected to a frequency divider (2) for supplying pulses to a stopping motor (3) driving the clock mechanism (4). The clock also has an electro magnetic alarm source (5) which is supplied with AC via a time switch (7). This alarm source (5) is connected to the output of the frequency divider (2). Pref. a manual selector switch (8) allows the alarm source (5) to be connected to one of several outputs of the frequency divider (2), this selector switch (8) being connected in series with the time switch (7). An amplifier may be connected between the alarm source (5) and the selector switch (8).
Patent FR-2372127-A1 (FR)
Title: Beton cellulaire a base d'anhydrite
Inventor: KOEPPEL ROBERT
IPC: C04B38/02
Filed: 1976-11-30
Abstract: Procédé de fabrication de béton cellulaire à partir d'un liant, d'eau, d'un système porogène caractérisé en ce que le système porogène est à base de poudre d'aluminium et d'un ou plusieurs produits à réaction alcaline, et en ce que le liant est du sulfate de calcium anhydre, variété II où beta dite anhydrite insoluble, associé à un ou plusieurs catalyseurs de prise de l'anhydrite.
Patent FR-2377536-A1 (FR)
Title: System generating high shock pressure in liq. - has shouldered piston in compressed air cylinder and extension valve to improve acceleration
Inventor: LYATKHER V M
IPC: F04B53/14
Filed: 1977-01-14
Abstract: The unit generates a high shock pressure in a liquid and is used to break up concrete and similar solid constructions. It comprises a cylinder (1) containing a piston (4) which has a minor diameter (20) at the front. An extension (25) in front of this has its forward end enlarged to a head (26). When the operating chamber (11) is not filled with compressed air, this head forms a valve which closes a necked portion (23) in the high pressure section (5,6). As compressed air pushes the piston forwards, this head moves past the necked section, opening the valve and permitting rapid acceleration of the piston.
Patent FR-2381898-A1 (FR)
Title: Protection for drilling head at undersea well - includes frame with jacking screws for vertically aligning tube-guide at well-head (NO 18.9.78)
Inventor: ALBAN CLAUDE
IPC: E21B43/10
Filed: 1977-02-24
Abstract: A tube-guide is fixed to the sea bed at a well head by means of a ball joint so that its vertical orientation can be adjusted. A centring gauge is fixed to the tube-guide and is surrounded by a protective casing. Connected to the casing is a framework that is fitted with jack screws for centring the tube-guide in relation to the wall of a cylindrical opening at the top of the protective casing. The jack screws are fixed to a support plate that rests on the top of the protective casing. Another set of jack screws fixed to the tube-guide adjust the height of the tube-guide by jacking off of the support plate. The top of the tube-guide is of sufficient height from the well that the drilling earthworks are deposited outside the casing. The device is used for protection of drilling heads when drilling under sea wells. It ensures absolute verticality of the tube-guide sealed in the sea bed and hence the well.
Patent FR-2344745-A1 (FR)
Title: Double row angular ball bearing - has split race and internal or external clamp rings for race assembly
IPC: F16C33/60
Filed: 1977-03-18
Abstract: A double row angular ball bearing has an inner ball race which is made from a single ring with two ball tracks (12, 13). The outer bearing race consists of a pair of track rings (15a, 15b) which are held in position by two external clamp rings. It is also possible to use a single piece outer ball race and an inner race that is made up of a pair of track rings. In each case, a ball cage (17) is provided for each row of bearing balls (14). Internal coupling rings are used for holding together the inner bearing race made from two rings.
Patent FR-2386110-A1 (FR)
Title: Multitrack photo variable potentiometer - has several parallel sensitive surfaces exposed to light at any point
IPC: H01L31/16
Filed: 1977-03-30
Abstract: Potentiometer whose resistance is varied by a light beam falling on a photo - resistive surface. The potentiometer has no adjustable electrical contact on the resistance surface and minimises the ageing process normally associated with photo - sensitive resistors. The series resistance to the potentiometer is also minimised. The design is based on the use of a resistive track which has several parallel paths exposed to the light spot (26) at any setting position. The resistor form may be linear or circular and has a band of photo-sensitive material (22) laid parallel on a substrate (20) to a similar band (21) of comparatively high resistance, both bands being by interdigitised Indium or Tin conductors (23, 24) such that the light spot covers several such groups at any one time.
Patent FR-2351865-A1 (FR)
Title: Collapsible container with base and hinged panels - can be folded flat onto base when container is not in use
IPC: B65D/
Filed: 1977-05-11
Abstract: The packing container has a base (1) supported on a lower frame (4). The base is furnished around the edges with a number of hinges (5) along the sides and (10) across the ends. Each hinge has a pair of lugs welded to the base with a central lug welded to the sides and kept in position by a pin. The sides are made on a framework (7) which is joined to the hinge and has covering panels with ventilation slots (8). The end and top panels are similarly constructed. The container may be collapsed when it is emplty.