baber/WOPTO huggingface dataset:
Patent CA-2198547-A1 (CA)
Title: Dc-to-dc switching power supply utilizing a delta-sigma converter in a closed loop controller
Inventor: BUCHANAN BRYAN
IPC: H02M3/155
Filed: 1997-02-26
Abstract: A DC-to-DC switching power supply (12) receives a DC biased power signal at a first input (14), a control signal at its control input (16) and produces an output DC voltage at its output terminal (20). A power supply controller (30) compares the produced output signal Vout with an input reference signal Vref.  The reference signal is an analog signal which may be produced via digital-to-analogconverter (34) which converts a digital input command into a corresponding analog signal Vref.  The resulting error signal is then passed through a proportional gain block 36 and an integral gain block (38). A signal proportional to the differential of the output voltage is passed through a differential gain block (44). The outputs from the proportional gain block (36) integrator gain block (38) differential gain block (44) are summed in the secondsummer (40) and applied as the input to a delta-sigma converter (42). The output from delta-sigma (42) then constitutes a fixed-width pulse stream of predetermined sequence such that, when applied to the control input (16) of the switching power supply (12), the power supply produces a DC output signal Vout at its output terminal (20) which is determined by the reference signal Vref.
Patent CA-2199254-A1 (CA)
Title: Device to be placed on the hull of a boat, in particular, a pleasure craft
Inventor: BAUDURET AGNES
IPC: B63B59/00
Filed: 1995-08-08
Abstract: Device (1) comprising a transparent sheet (2) coated, on one face, with an adhesive (4) and a product (6) reacting with an aqueous solution and/or an acid-reactant product (7) with a colour change area for a pH ranging from approximately 3 to 6. The adhesive ensures that the sheet (2) is kept watertight and in contact with the hull (10) for a minimum period of three months. The sheet (2) includes, on the same face and on the face which does not contact the hull (10), an opaque adhesive sheet (3) or a sheet which is made opaque and fully overlays it, and is capable of being manually removed. The device (1) is for assessing, in particular, the porosity of the outer sealing coat of a boat hull made of glass fiber-reinforced polyester resin and/or for detecting the effects of osmosis on the hull.
Patent CA-2200615-A1 (CA)
Inventor: SHAH SADIQ
IPC: C23C22/62
Filed: 1995-09-22
Abstract: The invention includes a method for cleaning and passivating a stainless steel surface comprising: 1) contacting the surface with 15-45 ml/liter of a composition comprising between about 15 and 50 % alkaline component, between about 1 to 15 % chelant, and between about 35 to 84 % water; 2) maintaining contact to dislodge and remove residue from the surface; 3) continuing contact to complex free iron ions liberated from the surface with the chelant to form an oxide film on the surface; and 4) continuing contact to precipitate the complexed ions into the oxide film. The compositions may further include a surfactant selected from the group consisting of anionic, cationic, nonionic and zwitterionic surfactants to enhance cleaning performance.
Patent CA-2201554-A1 (CA)
Inventor: WONG HENRY
IPC: E21B47/10
Filed: 1997-04-02
Abstract: A test plug for sealing a bore within a tubing hanger comprising an annular plug body having an axial bore extending therethrough, the axial bore forming a tapered annular seat and an enlarged receptacle within the plug body; a plurality of support dogs retractably mounted within corresponding slots formed in the plug body adjacent a lower portion of the receptacle; a mandrel slidably received within the receptacle, the mandrel having a downwardly and outwardly facing cam surface formed on a lower portion thereof; and a stinger having a tapered closure member adapted to be received in the annular seat, a spring for biasing the closure member against the seat and a seal ring for providing a fluid-tight seal between the closure member and the seat; wherein each support dog comprises an inner beveled edge formed on an upper portion thereof which preferably matches the cam surface of the mandrel, such that when the mandrel is set the cam surface will engage the beveled edge and urge the support dogs into an annular recess formed in the tubing hanger to thereby secure the test plug within the tubing hanger; and wherein the mandrel comprises an inwardly extending annular collar and the stinger comprises an outwardly extending ring forming a downwardly facing annular shoulder which overlaps the collar above the closure member, such that the closure member will not seal against the annular seat unless the mandrel is fully set, and the mandrel will release the closure member from the annular seat during retrieval of the test plug to thereby equalize the pressure above and below the test plug.
Patent CA-2203906-A1 (CA)
Inventor: SAKAI TSUYOSHI
IPC: C04B26/02
Filed: 1994-10-31
Abstract: An artificial stone of the following composition having a deep color tone, gloss and high--density uniform texture. A 10-70 mesh inorganic fine particle component is used, and the sum of this fine particle component and not less than 100 mesh inorganic particulate component accounts for not less than 85 wt.% of a product, a resin component accounting for less than 15 wt.% thereof. The surface of the fine particle component is partially or wholly coated with an organic material and cured in advance.  In the artificial stone, all the components are composed uniformly, and the fine particle component is exposed in an outer surface of the stone by being polished.
Patent CA-2204119-A1 (CA)
Inventor: SYMONS MICHAEL WINDSOR
IPC: C08H8/00
Filed: 1995-10-31
Abstract: A method of preparing particles of a lignocellulosic material for the manufacture of a finished product, such as a particle board, includes the steps of chemically modifying the lignocellulosic material by impregnating the lignocellulosic material with a suitable anhydride in a non-aqueous solvent;  applying to the particles of lignocellulosic material an adhesion promoter to promote the adherence of a thermoplastic resin to the surfaces of the particles of lignocellulosic material; and applying to the particles a thermoplastic resin in dry powder form, so that after the application of the adhesion promoter, the thermoplastic resin adheres to the surfaces of the particles of lignocellulosic material, the thermoplastic resin having been surface modified by irradiation or by fluorination; and removing any solvent present.
Patent CA-2205173-A1 (CA)
Inventor: SHINDO MASANORI
IPC: C07D495/14
Filed: 1995-11-15
Abstract: L'invention concerne un remède contre l'ostéoporose contenant un composé de triazépine représenté par la formule générale (I), ou bien un sel de celui-ci en tant que principe actif; de nouveaux composés de triazépine ainsi que des composés intermédiaires destinés à leur production. Dans ladite formule R?1¿ représente aryle ou hétéroaryle; R?2¿ représente hydrogène, hydroxy, halogéno ou alkyle inférieur; R?4¿ représente hydrogène ou halogéno, ou R?2¿ et R?4¿, avec l'atome de carbone auquels ils sont liés, forment du carbonyle; R?3¿ représente hydrogène, alkyle inférieur, alcoxy inférieur, cycloalkyle, aryle, hétéroaryle, -X-Y (où X représente -(CH¿2?)¿m?-, -CO-, -COCH¿2?-, -NH-, -NHCH¿2?-, -CH¿2?NH-, -CH¿2?NHCO-, -OCH¿2?-, -(CH¿2?)¿n?O- ou -CH¿2?S; et Y représente halogéno, cycloalkyle, aryle ou hétéroaryle), etc.; et A représente un cycle benzène ou thiophène. Le composé présente un excellent effet d'inhibition de la résorption osseuse utile en tant que remède contre l'ostéoporose.
Patent CA-2214160-A1 (CA)
Title: Method for forming a band seal on a capsule
Inventor: FURUYA YOSHIHIRO
IPC: A61J3/07
Filed: 1997-08-28
Abstract: A band seal is formed between a body and a cap of a capsule by fitting the cap on the body, and applying a gelatin-base sealant at least one time in the form of a band spanning the cap and the body. Band sealing is carried out by at least one of the following steps (A) to (E): the step (A) of applying the sealant at a temperature of 30-40°C at least when the sealant is first applied, the step (B) of applying the sealant at a viscosity of 50-200 centipoises at 50°C at least when the sealant is first applied, the step (C) of after the sealant is applied, blowing cold air at a temperature of up to 10°C to the band seal to cool the band seal below 10°C, the step (D) of reducing the joint distance between the body and the cap shorter than the standard capsule length, and the step (E) of applying the sealant to only an edge adjacent portion of the cap surface when the sealant is first applied. The invention prevents bubbles from generating in the band seal.
Patent CA-2216950-A1 (CA)
Title: Use of a silicon filter to protect the colour of artificially coloured keratin fibres against the effects of uv radiation
Inventor: DUBIEF CLAUDE
IPC: A61Q17/04
Filed: 1997-10-14
Abstract: New cosmetic and dermatological compositions (I) to prevent the discolouration of keratinous fibres comprise organosiloxane compounds R'b-Si-o (4-b)/2 (II) with UV-absorbent groups.
Patent CA-2217936-A1 (CA)
Title: Cart system for moving product
Inventor: NELSON ROGER D
IPC: B60D1/00
Filed: 1997-10-10
Abstract: The present invention provides a cart system for moving product from one point to another.  The system includes at least one inner cart and at least one outer cart.  The outer cart includes a gate for receiving the inner cart and also includes couplers for coupling a plurality of outer carts in tandem.
Patent CA-2218393-A1 (CA)
Title: Method and apparatus for defeating effects of color burst modifications to a video signal
Inventor: RYAN JOHN O
IPC: H04N9/79
Filed: 1996-05-01
Abstract: In the known color stripe process for preventing recording of video signals, the color burst present on each line of active video is modified so that any subsequent video tape recording of the video signal shows variations in the color fidelity that appear as undesirable bands or stripes of color error.  This color stripe process is defeated first by determining the location of the video lines including the color stripe process, either by prior experimentation or by on-line detection. Then some or all of the lines including the modified color bursts are modified so as to render the overall video signal recordable. The modification is accomplished in a number of ways, including phase shifting the color stripe burst into the correct phase, replacing some of the color stripe bursts or a portion of particular color stripe bursts so that they are no longer effective, and mixing the color stripe burst with color stripe signals of the correct phase so as to eliminate most or all of the phase error present. The modified color bursts are defeated, in other versions, by modifying the horizontal sync pulse signals immediately preceding the modified color bursts so that the modified color bursts are not detected by a VCR and hence have no effect.
Patent CA-2223197-A1 (CA)
Inventor: DERFLINGER KARL
IPC: B22F5/08
Filed: 1997-12-02
Abstract: There is described a method of producing a sintered body (1) having different cross-sections along a main axis (5), in particular a toothed-belt or chain wheel, by compression moulding a sintering powder in the direction of the main axis (5) and subsequent sintering. To create advantageous manufacturing conditions, it is proposed that at least two partial bodies (6, 7), which can be form-fitted into each other in the direction of the main axis (5), are pressed from sintering powder, which partial bodies each form an axial portion of the sintered body (1) with different cross-sections, and that the separately pressed and possibly presintered partial bodies (6, 7) are jointly sintered after joining them together.
Patent CA-2223298-A1 (CA)
Inventor: NGUYEN TIEN
IPC: B21D17/02
Filed: 1997-12-02
Abstract: A tool kit including a pilotless punch for swaging tube ends with beads, flares and portions of reduced diameter. The kit is particularly useful to auto-mechanics for reconditioning sending units on fuel tanks using common workbench tools and equipment. The tool kit includes a pair of clamping blocks cooperatively forming a chuck for enclosing a tube. Each clamping block has a flat portion along a segment thereof such that both blocks are forcibly retainable against one-another in a common shop vise for firmly clamping a tube. There is also provided a centering bushing and an annular collar for simultaneously enclosing portions of the clamping blocks and a portion of the centering bushing when the centering bushing is positioned adjacent the clamping blocks, for centering the centering bushing with the chuck. The round punch bar is mountable inside a central opening in the centering bushing. The punch bar has a first pilotless swaging die for swaging a tube end. Further, a gauge is incorporated into the centering bushing, and this gauge has a standard dimension corresponding to a required length of a tube end protruding from the chuck prior to swaging the tube end, for gauging a tube end prior to chucking it.
Patent CA-2227685-A1 (CA)
Title: Scroll hydraulic machine
Inventor: TAKEUCHI MAKATO
IPC: F01C21/10
Filed: 1998-01-22
Abstract: Disclosed is a scroll hydraulic machine comprising: a fixed scroll; a swirling scroll, which performs a revolving swirling motion while engaging with the fixed scroll; an Oldham joint, being made of a ferrous alloy and having a key for causing the swirling scroll to move in a revolving swirling motion while preventing the swirling scroll from rotating; an aluminum front case, structured such that a key-groove portion, to which the key of the Oldham joint is fitted, and a portion supporting a thrust force acting an the swirling scroll, are made of a ferrous alloy so that, even when lubricating oil slightly runs out, abnormal abrasion of the key groove does not occur; and a case body, for housing the fixed scroll, the swirling scroll, and the Oldham joint within a housing formed by attaching the front case to an opening portion of an end of the case body without a thrust bearing located between the front case and the swirling scroll.
Patent CA-2228290-A1 (CA)
Inventor: ZOMER ELIEZER
IPC: C12Q1/28
Filed: 1996-07-30
Abstract: A method of monitoring heat processes in pharmaceutical, clinical, food or nonbiological products, which method includes the steps of combining a test sample or sample extract from the product with chemiluminescent compounds or compounds specifically susceptible to enzymes, while triggering the decomposition of the chemiluminescent compound to emit light. The enzyme can be indegenous or added before the heat process as an indicator. The sample is incubated and integration of chemiluminescent light emission over time is measured as indicative of the past temperature and time profile of the sample.
Patent CA-2229481-A1 (CA)
Inventor: HABER STEFFEN
IPC: C07C209/36
Filed: 1996-08-02
Abstract: The invention concerns a process for reducing nitro groups to amino groups, characterized in that a nitro compound is reacted with hydrogen in the presence of an aqueous solution of a water-soluble metal catalyst of the general formula (I) M(L)n(Y)m, wherein the symbols and indices have the following meanings: M is ruthenium, rhodium, nickel or palladium; L, which may be identical or different, is a water-soluble ligand; Y, which may be identical or different, is a further ligand or an alkali or alkaline earth ion; n is 1, 2, 3 or 4; and m is 0, 1 or 2.
Patent CA-2231099-A1 (CA)
Inventor: TSAO ANDY
IPC: B23D15/00
Filed: 1998-04-07
Abstract: A constant angle cutting tool is disclosed. The cutting tool mainly includes a first cutting member having a first cutting head and a first handle extending from the first cutting head, said first cutting head having two first cutters defining an angle therebetween, a second cutting member pivotally connected to the first cutting member, said second cutting member having a second cutting head and a second handle extending from the second cutting head, said second cutting head having two second cutters disposed corresponding to the first cutters, and each of the two first cutters having a stopper disposed at the same distance from the peak of the angle formed by the two first cutters.
Patent CA-2231517-A1 (CA)
Title: Running gear for a drive mechanism for a rail-guided displacement device
Inventor: DUIJNSTEE EDUARD JOZEF MARIE
IPC: B66B9/08
Filed: 1996-10-02
Abstract: A running gear (3), for a drive mechanism of a rail-guided displacement device, such as a passenger lift, comprising a base part, drive means and at least two sets of guide wheels (9), arranged behind each other, viewed in direction of travel of the running gear, so that, during use, the running gear is guided along the rail in a desired position by the guide wheels, the base part comprising at least a bridge piece (5), a first and a second frame part (6, 7), the frame parts each being connected to the bridge piece so as to be movable about at least one pivotal axis, each frame part carrying a set of guide wheels and the frame parts being mutually coupled by coupling means which form a mechanical mirror, so that the movements of the first and the second part are always each other's mirror image in a first plane of symmetry extending at right angles to the driving direction of the running gear between the first and the second frame part, and viewed relative to the bridge piece.
Patent CA-2232044-A1 (CA)
Inventor: BROCKLEBANK WADE
IPC: E21B43/34
Filed: 1998-03-12
Abstract: An agitator tool for use in a formation containing oil. The tool includes outwardly projecting agitator members and an intake member coaxially disposed and vertically spaced from said agitator members. This disposition facilitates the formation of a suspension volume within which particulate debris is suspended and thus is substantially prevented from entering into the intake member.
Patent CA-2232060-A1 (CA)
Inventor: OHYAMA HIROFUMI
IPC: H04M11/00
Filed: 1998-03-13
Abstract: The communication terminal of the present invention receives ISDN information of ISDN containing information channel data of an information channel (B-channel) and control channel data of a control channel (D-channel) from an ISDN network.  The communication terminal comprises an extracting circuit and a comparator circuit continuously extracts the information channel data in synchronization with the reference pulse, and compares at least two continuous extracted information channel data.  The determination circuit determines that there is a change in at least two continuous information channel data based on the result of comparison in the comparator circuit, and generates a determination signal indicating that the information channel is in busy or not.  To detect usage by data of data communication series, in addition to the above circuits, includes an identification circuit for identifying idle data in an idle state in said information channel data, difference determination circuit for determining difference between the information channel data extracted and the idle data, and a usage determination circuit for outputting a determination signal indicative of usage of said information channel responsive to a determination of said difference determination circuit.
Patent CA-2233713-A1 (CA)
Inventor: SIMARD YVES M
IPC: E06C7/44
Filed: 1998-04-15
Abstract: The present invention relates to an adjustable ladder extender which can be affixed to one or more side rails of a ladder to allow the use of the ladder on uneven surfaces or terrain. The ladder extender comprises a frame, fixation means for releasably affixing said frame to said side rail; a projection arm slidably engaged in said frame, and dual locking means for releasably locking said projection arm at a desired position, said dual locking means comprising frictional locking means and compression locking means. The fixation means may be such that the side rail of the ladder need not be drilled or otherwise damaged to affix the frame thereto.
Patent CA-2237959-A1 (CA)
Title: A filter element for a fluid filter
Inventor: BARTELS ANTONIUS JOSEPHUS
IPC: B01D29/23
Filed: 1996-11-15
Abstract: The invention relates to a filter element (1) for a fluid filter, comprising a web of pleated filtering material that is formed into a circumferentially closed cylindrical filter body, which is coaxially supported by a perforate rigid tube (4) and the axial ends of which are sealingly inserted into corresponding annular receiving cavities provided in a rigid bottom end cap (3) at one end and in a rigid annular end cap (2) at the opposite end of the filter body. According to the invention the cylindrical filter body has its terminal edges {5) embedded in separate sealing rings (6) of a flexible type of rubber or similar elastomeric material and that said filter body is sealingly clamped with said sealing rings, and together with the said spporting tube, removably between the rigid bottom end cap and annular end cap respectively.
Patent CA-2241108-A1 (CA)
Inventor: STRING ESA
IPC: B60D1/14
Filed: 1996-12-23
Abstract: The invention relates to transport vehicles and combinations thereof and their tow bar constructions comprising a tow bar (10') journalled to the front of the chassis rotatably relative to a vertical and a horizontal axle, and means for turning the axle (2'). The means for turning the axle (2') comprise a steering lever (8') secured to the tow bar (10') rotatably relative to the centre line of its vertical axle (9'), and supporting arms (6', 7') secured at one end to the steering lever on opposite sides of said vertical axle and at the other end to the axle on its opposite sides.
Patent CA-2245932-A1 (CA)
Inventor: NORMAN BRYAN HURST
IPC: C07D413/06
Filed: 1997-02-26
Abstract: The invention provides novel cryptophycin compounds which can be useful for disrupting the microtubulin system, as antineoplastic agents, and for the treatment of cancer. The invention further provides a formulation for administering the novel cryptophycin compounds.
Patent CA-2247896-A1 (CA)
Inventor: GOLTRA PETER S
IPC: G16H50/20
Filed: 1997-02-25
Abstract: A method for generating sentences of text for selected medical findings in an electronic medical diagnostic system (10) is disclosed. First, a descriptive phrase for each medical finding is created. Each descriptive phrase is then analyzed to determine possible truncation points for modifying the descriptive phrase of one medical finding if another medical finding is also selected. A code at each possible truncation point is then entered into the phrase. Language to be inserted at each of the truncation points is then created and the descriptive phrase and modifying language are stored in database file (20) and knowledge base file (22).      Finally, the stored descriptive phrases and modifying language are then combined to form a readable text on display (12) for the medical findings selected from the databases.
Patent CA-2248554-A1 (CA)
Inventor: SPITS MARC
IPC: A61F5/37
Filed: 1998-09-30
Abstract: The invention relates to an orthesis for the prevention and/or treatment of carpal tunnel syndrome, comprising a substantially rigid hand fixation brace extending immediately over the dorsal part of the hand, which brace has two ends, one of which is provided with a part to be fastened to the wrist and underarm while the other is provided with a finger coupling part. The finger coupling part which is formed as a finger supporting brace, preferably only engages the index and middle finger, while the top of the finger supporting brace is open to allow finger movement in the upward direction. Further, the hand fixation brace is curved such that when the orthesis is in use, the dorsal part of the hand extends slightly upward with respect to the top side of the underarm.