baber/WOPTO huggingface dataset:
Patent NO-178272-C (NO)
Inventor: REID NEIL GEORGE
IPC: E21B10/20
Filed: 1988-04-21
Abstract: The rotary rock drilling device comprises chiefly a body (1), a rotary cutting disc (2) and a counter-reaction member (3). The body (1), is fitted with means (101) for connection to a suitable rotary drive system, and it is traversed in the height direction by a conduit (102), (103) opening into orifices (104), (105), provided for the circulation of a drilling fluid. The cutting disc (2) is arranged on one side of the lower part of the body (1), the face of the disc (2) being orientated towards the concave bottom (501) and the cylindrical wall (502) of the hole (5). The counter-reaction member (3) is arranged on the side of the body (1) away from that carrying the cutting disc (2). The maximum radial projection from the axis of rotation (A) of the body (1) of any part of the counter-reaction member (3) is less than the radius of the hole (5). The surface of contact (301) between the counter-reaction member (3) and the hole (5) is situated below the line at which the concave bottom (501) of the hole (5) meets the cylindrical wall (502) of the hole (5). The lowest point (B) of the surface of contact (301), which closely matches the concave surface of the bottom (501) of the hole (4), is separated from the axis of rotation (A) by a distance (C) greater than the distance (D) from the lowest point (E) of the cutting disc (2) to the same axis (A).
Patent NO-179763-C (NO)
Inventor: MOLLER HOLGER E
IPC: F24S20/20
Filed: 1993-06-18
Abstract: A collecting device of solar energy comprising an elongated reflecting element (1), which is parabolic in cross-section and mounted in an inclined position; and mutually parallel receiving pipes (2) placed in the focal point of the reflecting element and extending through the entire length of the element and connected to the circulation system (21, 22) containing liquid. The said system further operates to heat the liquid (9) in the accumulator (8). The piping (2) is provided, at the lower and upper ends thereof, with valves (3, 4) allowing only upward flow of liquid, whereby the device operates periodically in such a way that the liquid is discharged from the pipes (2) only after reaching its evaporation point, whereupon the piping (2) is refilled. A flexing bellows (5) is placed on top of the valve (4) for maintaining a certain counterpressure for the upper valve (4).
Patent CA-2001350-C (CA)
Title: Process for producing hydrated and cured product of lime-gypsum-coal ash mixture
Inventor: KUDO SATOSHI
IPC: B01J20/04
Filed: 1989-10-24
Granted: 1999-04-06
Abstract: A process for producing a hydrated and cured product of a lime-gypsum-coal ash mixture capable of constituting a high-performance desulfurizing agent, with a high yield and in a simplified manner is provided, which process comprises adding water to a mixture of lime, used desulfurizing agent and coal ash, followed by kneading the resulting mixture, then extruding the resulting kneaded material through a hole of 2 to 10mm in diameter to obtain bullet-like materials, hydrating and curing said bullet-like materials, followed by drying.
Patent CA-2005617-C (CA)
Inventor: ISHIKAWA YUZURU
IPC: C09J7/02
Filed: 1989-12-15
Granted: 1996-03-19
Abstract: The present invention relates to an adhesive tape which is low in cost and the properties of which such as unwindability, adhesiveness, trimmed clearance, printability, transparency and longitudinal tearing strength are improved without spoiling lateral hand cutting characteristics, wherein a smooth surface is formed on one side of a polyolefin resin base film and an uneven surface is formed on the other side thereof, the latter being coated with an adhesive and having an uneven depth of 0.03-0.30 mm and an uneven interval of 0.5-5.0 mm, the melt index of polyolefin resin being 0.2-20 g/10 min. and a surface wetting tension of the smooth surface of the polyolefin resin base film being less than 30 Dyn/cm and that of the uneven surface being more than 35 Dyn/cm.
Patent CA-2010780-C (CA)
Title: Synthesis of carbonyl compounds
Inventor: BLACKBOROW JOHN R
IPC: C08F8/48
Filed: 1990-02-23
Granted: 1999-06-01
Abstract: This invention relates to a process for producing active carbonyl compounds predominating in aldehyde groups from polybutenes having at least 50% of the unsaturation in the terminal position.  The process has an initial epoxidation of the polybutene followed by isomerisation of the epoxide so formed at a relatively higher temperature.     The active nature of the carbonyl group enables these compounds to be readily converted to the corresponding amines or imines which are useful fuel and lube oil additives.
Patent CA-2013531-C (CA)
Title: Manual tarp enclosing system for flat bed trucks
Inventor: DEMONTE WALTER PETER
IPC: B60J7/06
Filed: 1990-03-30
Granted: 1997-03-18
Abstract: A manual tarp enclosing system is disclosed for enclosing flat bed trailers which has an elongate track on each side and a plurality of U-shaped bows bridging the bed with one of the legs of the bow received in the track on each side of the bed for movement longitudinally in the track means.  A cable positioning system for moving and positioning the bow is provided which comprises a closed loop of cable which extends along one side, across the width and down the other side of the bed as parallel double strands.  A first bow is secured to one of the cable strands running parallel each of the tracks whereby on manually pulling on the loop of the cable, the first bow is moved towards the front or rear of the bed.  A cover is secured to the first bow and at successive intervals to successive of the bows.  On drawing the first bow, the cover extends or collapses in an accordian-like manner.
Patent CA-2016802-C (CA)
Title: Cup dispenser for an automated drinkmaker system
Inventor: BROGNA SALVATORE J
IPC: B67D1/00
Filed: 1990-05-15
Granted: 1999-11-09
Abstract: An automatic cup dispensing arrangement for separating the bottommost cup from a stack of cups supported in a cup dispenser. The cup dispenser is pivotally mounted about a substantially horizontal pivot, about which the cup dispenser is cyclically pivoted to allow the cup stack to cyclically swing through a dispensing travel arc during a dispensing cycle. A pair of opposed cup separating members are mounted on opposite sides of the stack of cups in the cup dispenser along the dispensing travel arc. The opposed cup separating members are spaced a distance apart substantially equal to the width of a cup just beneath the cup rim, and each of the pair of opposed cup separating members comprises at least one cup separating wedge positioned opposite to a corresponding cup separating wedge in the oppositely positioned cup separating member. The appositely positioned cup separating wedges cooperate to separate the bottommost cup from the cup stack as the cup dispenser is pivoted along the dispensing travel arc. A preferred embodiment of the cup dispensing arrangement includes a cup carousel, having a plurality of the cup dispensers positioned circumferentially therearaund, with each cup dispenser being pivotally mounted relative to the cup carousel by a pivot thereon. Each cup dispenser with an associated pair of opposed cup separating members is supported on the cup carousel for rotation therewith, such that any one of the cup dispensers can be positioned at the cup drop station. A cup dispensing mechanism is positioned at the cup drop station to activate any one of the cup dispensers positioned thereat.
Patent CA-2018938-C (CA)
Title: Microprocessor-based stand-alone digital protective relay for power transformers
Inventor: RAHMAN M AZIZUR
IPC: H02H7/04
Filed: 1990-06-13
Granted: 2002-01-08
Abstract: A stand alone protective apparatus and method is provided for electrical power devices. Power devices can be damaged due to conditions for example of over current, magnetizing in rush-current, over excitation voltage, saturation, ground fault or internal faults. To protect power devices from the noted conditions, electrical current of the power device is sensed and sampled. Digital processing is used for analyzing the digitally coded sample current and based on one of the conditions that can cause damage, a signal is provided for selectively actuating, by tripping an electric/electronic circuit breaker.
Patent CA-2022923-C (CA)
Inventor: TAKATO KENJI
IPC: H04M1/58
Filed: 1990-08-08
Granted: 1995-01-03
Abstract: A hybrid circuit which converts receiving side four-wire signals from a switching network into two-wire signals, supplies the same through line B and line A to a telephone terminal equipment, and converts two-wire signals supplied from the telephone terminal equipment through the line A and the line B to the switching network into transmitting side four-wire signals, including a pair of battery feeding and terminating resistors connected between power sources (GND and VBB ) and the line B and line A and a receiving side mirror circuit and transmitting side mirror circuit both connected between the lines B and A.
Patent CA-2024498-C (CA)
Title: Gas metal arc welding wire
Inventor: YONKER DONALD W JR
IPC: B23K35/30
Filed: 1990-08-31
Granted: 1995-11-21
Abstract: An iron based filler wire is described for use in gas shielded arc welding and includes between about 0.05 to 0.09 weight  percent  carbon,   1.10  to  1.40  weight  percent manganese,  0.70  to  1.00 weight percent  silicon, 0.00  to 0.025  weight  percent  phosphorus,  0.00  to  0.225  weight percent sulfur and 0.0 to 0.3 weight percent copper.   The obtained weldment produced in CO2 shielding gas possesses an average Charpy V-notch impact value of at least 45 ft.-lbs. at -20°F.
Patent CA-2029191-C (CA)
Title: Method for the cooling of a product flow containing solid and/or semisolid foodstuff particles
Inventor: RAUSING HANS
IPC: A23L23/00
Filed: 1990-11-02
Granted: 1998-10-13
Abstract: A method for the cooling of a heated, e.g. heat-sterilized, flow containing particles of foodstuff character.  The flow is separated into a high-particle and a low-particle fraction which is cooled separately and is used later as a cooling medium for the cooling of the particle fraction.  The method is intended in the first place to be used in so-called aseptic packaging according to which the heat-treated, cooled foodstuff product, e.g. fruit soup, vegetable soup, meat broth etc. is packed in sterilized packing containers, or in packing containers manufactured from sterilized packing material, under aseptic packing conditions.
Patent CA-2031592-C (CA)
Title: Internal combustion engine
Inventor: MERRITT DAN
IPC: F02F1/18
Filed: 1990-12-05
Granted: 2000-07-25
Abstract: An internal combustion engine has first and second cylinders (12, 14), the first cylinder (12) having a larger swept volume than the second cylinder (14) and the second cylinder being formed in the crown of the first cylinder. First and second pistons (16, I8) are reciprocable respectively in the first and second cylinders (12, 14), the second piston (18) being formed as a protrusion on the crown of the first piston (16). A combustion chamber (20) is formed in the second piston (18) with an air port (44) opening into the first cylinder (12) and a second port (40) opening into the second cylinder (14). A first inlet is provided (25) for supplying air or the like into the first cylinder (12) during an induction stroke of the first piston (16) together with a fuel inlet (36) for supplying fuel to said second cylinder (14). A passage extends between the first and second cylinder to enable transfer of air from said first cylinder (12) to said second cylinder (14) other than through said combustion chamber (20) over a preselected angle of movement of the pistons relative to the cylinders for assisting movement of gases from said second cylinder (14) into said combustion chamber (20). Additional control means for controlling the movement of air is also provided.
Patent CA-2036603-C (CA)
Title: Apparatus and method for time multiplexing a resource among a plurality of entities
Inventor: FRASER ALEXANDER G
IPC: H04L5/22
Filed: 1991-02-19
Granted: 1995-11-21
Abstract: Apparatus and methods for time multiplexing a resource among a plurality of entities at average rates and with deterministic delays between accesses to the resource by an entity. An entity accessing the resource received a time slot on the resource; a fixed number of time slots constitute a frame. Each entry receives a fixed allocation of time slots in the frame. When an entity has work for the resource to do, it receives access to the resource for a number of slots in each frame equal to the lesser of the number of slots required to do the work and the number of slots in the allocation. A rate-controlled server is disclosed which defines a frame and allocations therein, as well as a hierarchy of servers which combines rate-controlled traffic with best traffic. In the hierarchy, a rate-controlled server activates a round-robin server when the entitles served by the rate-controlled server do not require all the slots in a frame. A hierarchy of rate-controlled servers is further disclosed which permits access to the resource at widely-differing average rates. In that hierarchy, a number of slots in the frame for a given member of the hierarchy are reserved for the next number down of the hierarchy and the next member down is active only duringthose slots. Further disclosed are nodes of ISDN networks employing ATM which incorporate the servers and hierarchies thereof.
Patent CA-2037321-C (CA)
Title: Polymer blends for packaging films
Inventor: HWO CHARLES C
IPC: C08L23/04
Filed: 1991-02-28
Granted: 2000-04-11
Abstract: A blend of an ethylene-unsaturated carboxylic acid copolymer, a butene-1 homopolymer or copolymer, and an ethylene homopolymer or a copolymer of ethylene and an unsaturated ester can be used to provide packaging film or sheet or laminar structures.
Patent CA-2038505-C (CA)
Title: Low profile web adjuster
Inventor: LEE DAVID J
IPC: B60R22/30
Filed: 1991-03-18
Granted: 2000-11-28
Abstract: A low profile web adjuster for securing a web. A seat includes a harness, one end of which extends through a web adjuster mounted to the seat. A pivot cam on the adjuster is operable to lockingly engage one end of the harness. In the preferred embodiment, the cam is moved by pulling a control member having a pair of arms pivotally mounted to the cam member at a location to force the cam member apart from the web. Under normal loading, the cam member contacts and holds the web against the base wall of the adjuster and under high loading also holds the web against an upraised rib on the base wall.
Patent CA-2039704-C (CA)
Title: Fault powered, processor controlled circuit breaker trip system having reliable tripping operation
Inventor: DURIVAGE LEON WILLIAM III
IPC: H02H3/08
Filed: 1990-08-20
Granted: 1996-01-16
Abstract: A fault-powered, processor-based tripping system, includes a solenoid for interrupting a current path in response to a trip signal generated by a processor.  The processor analyzes current provided by a current sensor, by way of an interface circuit, to determine when the trip signal should be generated.  A power supply provides a reference signal to the processor to indicate the amount of power it is capable of delivering to the solenoid.  Before attempting to engage the solenoid, the processor checks the level of the reference signal to determine whether or not the power supply is at that time capable of supplying the solenoid with a sufficient amount of power to effect interruption of the current path thereby avoiding a power loss by inappropriate engagement of the solenoid.  If the power level is sufficient to engage the solenoid, the processor generates the trip signal to interrupt the current path.
Patent CA-2040410-C (CA)
Title: Wound healing compositions containing il-1 and a growth factor
Inventor: ANTONIADES HARRY N
IPC: C07K14/49
Filed: 1990-09-07
Granted: 2006-11-14
Abstract: Healing an external wound of a mammal by administering to the mammal a composition containing purified platelet-derived growth factor and purified interleukin-1 or administering !o the mammal a composition containing purified insulin-like growth factor and interleukin-1,
Patent CA-2043212-C (CA)
Title: Method for resolving ambiguity in the determination of antenna angle of view and doppler frequency in synthetic aperture radar
Inventor: RUNGE HARTMUT
IPC: D21F1/02
Filed: 1991-05-24
Granted: 1995-10-17
Abstract: In a method for resolving ambiguity in the determination of antenna angle of view and Doppler frequency in synthetic aperture radar (SAR), by evaluating the dependence of the Doppler frequency on the transmitting frequency a skew of the two-dimensional Fourier power spectrum or the two-dimensional autocorrelation function of radar data is measured in that the radar data are subjected to a range Fourier transformation and for the individual range frequencies in a following Doppler centroid estimator a Doppler centroid determination is carried out in the azimuth direction.            By this method the pulse repetition frequency ambiguities are eliminated without any demands having to be made on the data acquisition or a high image contrast; this method can therefore be applied to any region of the raw data matrix. Moreover, no azimuth compression is necessary.
Patent CA-2045753-C (CA)
Title: Method for the separation of hfa 134a
Inventor: TAYLOR ANDREW M
IPC: B01D3/36
Filed: 1991-06-26
Granted: 2001-04-10
Abstract: A method for separating HFA 134a from an HFA 134a-rich mixture thereof with HF and/or HCFC 1122 which comprises feeding the mixture to a distillation column to separate an azeotrope or near-azeotrope of HFA 134a and HF and/or HCFC 1122 from a residue comprising substantially pure HFA 134a. Starting from an HF-rich mixture of HFA 134a such as a typical product stream in HFA 134a production, the method includes a first distillation step to separate HF from the initial mixture and produce an azeotrope or near azeotrope of HFA 134a and HF which is an HFA 134a-rich mixture.
Patent CA-2046973-C (CA)
Title: Dishwasher detergent composition
Inventor: PAPAIOANNOU ALLANNA M
IPC: C11D3/37
Filed: 1991-07-12
Granted: 1996-01-02
Abstract: A liquid dishwasher detergent emulsion provided by this invention has high alkalinity, high levels of sequestrant and high temperature stability. The detergent emulsion comprises:      i)   4 to 25% w/w of an alkali metal hydroxide suitable for use in a dishwasher; ii)  0.2 to 5% w/w of a low foaming free non-ionic surfactant; iii) 0.5 to 3% w/w of a polyacrylic acid suitable for enhancing sheeting action on non-porous surfaces; iv)  15 to 30% w/w of a potassium polyphosphate sequestering composition enriched in tripolyphosphate and comprising minimal amounts of ortho and long forms of polyphosphates to facilitate thereby solubility of said potassium polyphosphate in water; v)   2 to 6% w/w of a polymeric emulsion stabilizer for said free nonionic surfactant, the polymeric emulsion stabilizer being a chemically associated polycarboxylic acid polymer and a nonionic surfactant formed by polymerization of said nonionic surfactant with a polymerizable reactant selected from the group consisting of acrylic acid, polyacrylic acid, copolymers of acrylic acid and an ethylenically unsaturated polycarboxylic acid or an anhydride thereof, copolymers of ethylenically unsaturated polycarboxylic acid or anhydride thereof with a non-carboxy containing ethylenically unsaturated monomer, said nonionic surfactant and said reactant being polymerized in an aqueous media; vi)  0 to 15% w/w of a sequestering agent to enhance hard water sequestering characteristics of said potassium polyphosphate; and vii) water to make up the balance of composition to 100% w/w.
Patent CA-2052442-C (CA)
Inventor: DENIS PHILIPPE
IPC: C07C51/14
Filed: 1991-09-26
Granted: 1996-07-23
Abstract: La présente invention concerne un procedé de préparation de l'acide adipique par hydrocarboxylation d'acides penténiques. Elle a plus particulièrement pour objet un procédé de préparation de l'acide adipique par réaction de l'eau et de l'oxyde de carbone sur au moins un acide penténique, en présence d'un catalyseur à base de rhodium et d'au moins un promoteur iodé, à une température comprise entre 100 et 240.degree.C, sous une pression supérieure à la pression atmosphérique caractérisé en ce que a) la réaction est mise en oeuvre dans un solvant choisi dans le groupe constitué par les hydrocarbures aliphatiques ou cycloaliphatiques, saturés, les hydrocarbures aromatiques et leurs dérivés chlorés et en ce que b) la pression partielle de l'oxyde de carbone mesurée à 25.degree.C est inférieure ou égale a 12 bar.
Patent CA-2060243-C (CA)
Inventor: BROWN CRAIG C
IPC: A61B19/08
Filed: 1992-01-29
Granted: 2002-01-08
Abstract: A three-layer laminated material is particularly useful for surgical drape reinforcing panels. The material has a first outer layer of liquid impervious material, an intermediate layer of absorbent material, and a second outer layer of plastic webbing. The webbing layer, which is on top when a drape covers a recumbent person, reduces tinting from the absorbent layer without substantially reducing absorbency. The webbing layer is secured to the absorbent layer by a cold cure adhesive.      In preferred embodiments, one or both of the outer layers are corona-treated materials and the intermediate layer is a nonwoven fabric.
Patent CA-2071131-C (CA)
Title: Establishment of connections between terminals for mobile subscribers of an interconnected network
Inventor: ROTHENHOEFER KARL
IPC: H04W76/10
Filed: 1992-06-12
Granted: 1996-05-28
Abstract: The establishment of a connection between two terminals for mobile subscribers of a private or a virtual private network, where the terminals may be connected anywhere in an interconnected network of a number of private or virtual private networks and public networks.  According to the invention, intelligent network functions are assigned to private or virtually private networks, to control these complex tasks.  By inserting dialing information that contains a network discriminating identification, a connection is established with a service control point in the private or virtually private network so that the functions of the intelligent network can be used to ascertain the dialing information.
Patent CA-2071363-C (CA)
Title: System for providing early warning of potential water induction events and enabling rapid steam turbine restarts
Inventor: BARTON SERGE PETER
IPC: F01D25/10
Filed: 1992-06-16
Granted: 2004-08-31
Abstract: A steam turbine monitoring and control system for a steam turbine having a base, a cover and interfacing plant piping system with plural feed water heaters and fluid tanks, includes a plurality of water detectors located in the interfacing plant piping system, for detecting the presence of water or cool fluid, a plurality of heater blankets covering the steam turbine, temperature detector means, coupled to the base and cover of the steam turbine, for detecting temperature differentials between the base and the cover, a water detector controller coupled to the plurality of water detectors and the temperature detector means; and monitor/alarm means, coupled to the water blanket power source, the plurality of heater blankets, the temperature detector means, and the plurality of water detectors, for indicating a condition of potential water induction when water or cool fluid is detected at any one of the plurality of water detectors, and for switching on the heater blankets to maintain absolute and relative temperatures between the cover and base within prescribed limits when the turbine is off-line.