baber/WOPTO huggingface dataset:
Patent CA-1093153-A (CA)
Inventor: ANDERSON THOMAS E
IPC: H02M7/515
Filed: 1977-09-01
Granted: 1981-01-06
Abstract: ABSTRACT OF THE DISCLOSURE           A circuit for detecting a missed commutation in an inverter. The circuit includes a detector coupled to the center tap of a commutating interval current limiting reactor which is connected in series with and interposed between a pair of gate controlled rectifiers for generating a first signal upon detecting and for the duration of an interval when both of the rectifiers are  ON. The circuit further provides a signal processing arrangement, responsive to a first pulse used to initiate an interval when either of the pair of rectifiers is to be "ON", for generating a second signal. Also provided is a gating arrangement responsive to the first and second signals for generating a control signal to cause cessation of the operation of the inverter, is the first signal is absent during the total occurrence of the second signal.
Patent CA-1103939-A (CA)
Inventor: FUGLEBERG SIGMUND P
IPC: C22B3/00
Filed: 1977-09-22
Granted: 1981-06-30
Abstract: HYDROMETALLURGICAL PROCESS FOR THE TREATMENT OF SOLUBLE      SILICATE-BEARING MATERIALS            ABSTRACT OF THE DISCLOSURE       A hydrometallurgical process for the treatment of a soluble silicate-bearing material for the recovery of its valuable metal content by leaching the silicate-bearing material at an elevated temperature with an aqueous solution of a mineral acid, precipitating silicic acid during the same stage in an easily settling and filtering form, the silicate-bearing material being added at such a rate that its concentration calculated as SiO2 corresponds to the simultaneously precipitating silicic acid quantity, and by finally separating the solid material from the valuable-metal-bearing solution.
Patent CA-1077080-A (CA)
Inventor: HASENBERG LARRY E
IPC: B62D63/06
Filed: 1977-10-17
Granted: 1980-05-06
Abstract: FOLDING GOOSENECK TRAILER     ABSTRACT OF THE DISCLOSURE         An industrial trailer having a collapsible goose-neck which forms a ramp over which equipment may be loaded onto the trailer is disclosed.  Hydraulic cylinders contained within the bed of the trailer control the raising and lower-ing of the gooseneck.  A method is also disclosed whereby operation of the gooseneck while attached to the tractor can be used to facilitate changing of the tires on both the tractor and the trailer itself.
Patent CA-1079825-A (CA)
Inventor: KUNZ RAYMOND W
IPC: H01R13/633
Filed: 1977-10-24
Granted: 1980-06-17
Abstract: ABSTRACT OF THE DISCLOSURE    An electrical connector for attaching an electrical cord to an electrical appliance is provided.  The connector has an ejector which allows for one hand disengagement of the connector and cord from the appliance.  The ejector has a first portion movable through and out of the connector and an integral hinge shaped second portion.  By application of finger pressure on the second portion to flatten it, the first portion is moved out of the connector and against the appliance causing an oppositely directed movement of the connector, thereby disengaging the connector and cord from the appliance.
Patent CA-1097166-A (CA)
Inventor: BERGKVIST LARS A
IPC: F24S10/70
Filed: 1977-11-17
Granted: 1981-03-10
Abstract: ABSTRACT OF THE DISCLOSURE            A device for heating water by means of solar energy, The device has heat absorbing metallic members carrying the water.  One or more lenses for concentrating the solar energy are located a predetermined distance above the upper surfaces of the heat absorbing members,  The lenses each consist of a shell carrying water.
Patent CA-1074103-A (CA)
Inventor: RUSSELL MICHAEL K
IPC: E21B47/022
Filed: 1977-12-14
Granted: 1980-03-25
Abstract: ABSTRACT OF THE DISCLOSURE            An instrument for measuring the direction of a borehole in order to carry out a spatial survey thereof comprises a gyro-stabilised single-axis platform having its axis coincident with the axis of the borehole and three gravity sensors for measuring three components of gravity in the direction of the borehole axis and in two mutually perpendicular directions in a plane perpendicular to said axis.
Patent CA-1089914-A (CA)
Inventor: FAN GEORGE J
IPC: G01D15/18
Filed: 1977-12-19
Granted: 1980-11-18
Abstract: VECTOR MAGNETIC INK JET PRINTER WITH STABILIZED JET STREAM           Abstract of the Disclosure A vector magnetic ink jet printer is arranged so that the ink droplets in the initial jet stream are alternately selected (i.e., magnetized) and unselected (unmagnetized).  The interposition of unselected droplets between selected droplets prevents undesired magnetic interactions between selected droplets and gives them optimum spacing before they are deposited upon the recording surface, while at the same time keeping all of the droplets in sufficiently close prox-imity to give the stream aerodynamic stability.  The gutter or catcher for unselected droplets is located between the second axial deflector (X deflector) and the recording surface.  The magnetic field of the second deflector is specially shaped so that it can effectively control the trajectories of all selected droplets that have passed through the field of the first axial deflector (Y deflector), but without affecting the trajectories of unselected droplets aimed at the gutter.  The selected and unselected droplets form separate substreams which have sufficient angular divergence in the X direction for enabling the unselected droplets to be guttered without excessively spreading their individual trajectories along that direction, since they are not affected by the X reflecting field, but the divergence is not great enough to disrupt the aerodynamic stabilizing action of each sub-stream upon the other.
Patent CA-1095585-A (CA)
Inventor: BIRT DENIS C P
IPC: H01M10/39
Filed: 1978-03-23
Granted: 1981-02-10
Abstract: ABSTRACT          A high temperature cell of pelletised construction contained within a close fitting inert tube.   Anode active material is lithium.   Cathode active material is an iron sulphide or titanium disulphide. Electrolyte is a mixture of lithium halides.   The cell is bounded by separator plates extending beyond the inner peripheral surface of the  inert tube.
Patent CA-1092494-A (CA)
Inventor: SCHAEFFER ROBERT L
IPC: B02C18/12
Filed: 1978-04-21
Granted: 1980-12-30
Abstract: ABSTRACT OF THE DISCLOSURE         In a food processor with a power base and a lid-covered bowl supported thereon with the lid having a feed chute therethrough and a driven shaft extending vertically into the bowl, there is provided a pair of interchangeable cutters for the shaft.  To this conventional structure an improvement is provided in a multiple cutting and storage arrangement comprising an exten-sion on the shaft raising it to the underside of the lid, a first separate removable cutter on the shaft in the bowl base and a second separate removable disc cutter on the top of the shaft spaced from the first cutter closely adjacent the bowl lid  with structure fixing the cutters in a given position on the shaft so there is concurrent rotation of both cutters within the bowl so that the bowl stores the individually usable cutters when they are not in use and each of the cutters is individually operable in use either separately or simultaneously to automatically precut food by the first cutter before action by the second cutter.          An additional improvement is the provision of the second disc cutter having slicing and grating mechanism on opposite sides of the same disc so the single disc is reversibly usable.
Patent CA-1085786-A (CA)
Title: Cartridge for grouting an anchor element in a hole of  a support structure
Inventor: SIMPSON ROBERT E P O BOX SPOKA
IPC: E21D20/02
Filed: 1978-06-06
Granted: 1980-09-16
Abstract: TITLE: CARTRIDGE FOR GROUTING AN ANCHOR ELEMENT IN A HOLE OF A SUPPORT STRUCTURE                    Abstract of the Disclosure A grouting cartridge is described for placing in a hole of a support structure.  The cartridge is capable of rapidly forming a solid grout about an anchor element where the anchor element is thrust into the hole.  The cartridge comprises a frangible outer tubular casing fabricated of plastic or the like and containing a uniform mixture of a water-hardenable cement and a multitude of frangible microcapsules which hold droplets of water.  One or more of these cartridges is placed in the borehole, and the anchor element in a one-step operation is inserted therein, and preferably rotated, to pierce the casing and rupture the microcapsules to uniformly wet the cement to form a cement paste.  The cement paste under the pressure of the anchor element flows into intimate contact with the hole wall of the support structure and into intimate contact with the surfaces of the anchor element.  The cement paste rapidly solidifies forming a solid grout between the support structure and the anchor element to affix the anchor element securely to the support structure.
Patent CA-1130340-A (CA)
Inventor: LEE CHARLES H
IPC: B60J7/19
Filed: 1978-09-21
Granted: 1982-08-24
Abstract: C-2,903                                             D-1,408 LATCH MECHANISM FOR REMOVABLE ROOF CLOSURE          Abstract of the Disclosure:         A latch mechanism for securing a removable closure panel in a vehicle body roof opening includes first and second keepers mounted on the vehicle body at the opposite sides of the roof opening.  First and second operating levers are pivotally mounted on the closure panel for movement about spaced axes and are respectively pivotally connected with first and second latch bolts having interengaging gear teeth which rotate the operating levers through 90° of rotation oppositely of each other between latching positions wherein the operating levers are positioned generally colinear with each other and the latch bolts to effect extension of the latch bolts into engagement with the keepers and unlatching positions wherein the operating levers are located generally parallel to one another and normal to the latch bolts.          The keepers are mounted for transverse adjusting movement to align with the latch bolts.  The latch bolts are vertically aligned with the keepers by vertically adjustable plates on the closure panel.  Locating hook members are mounted on the closure panel and engageable with the keepers to transversely align the latch bolts with the keepers and are longitudinally adjustable to adjust the longitudinal location of the closure panel in the vehicle body roof opening.
Patent CA-1105788-A (CA)
Inventor: PRATT HARRY H
IPC: F22B29/06
Filed: 1978-11-09
Granted: 1981-07-28
Abstract: VAPOR GENERATING SYSTEM UTILIZING ANGULARLY ARRANGED      BIFURCATED FURNACE BOUNDARY WALL FLUID FLOW TUBES                   ABSTRACT OF THE DISCLOSURE           A vapor generating system in which a vapor gen-erating section and a superheating section are connected in a series flow relationship with a fluid separating section extending between the vapor generating section and the superheating section.  The vapor generating section includes an upright furnace section formed by a plurality of tubes, a portion of which extend at an angle with respect to the horizontal plane for passing fluid through the length of the furnace section to convert a portion of the fluid to vapor or to heat the fluid.
Patent CA-1113429-A (CA)
Inventor: KINGSFORD TED I
IPC: A45D34/04
Filed: 1978-12-05
Granted: 1981-12-01
Abstract: ABSTRACT            The invention relates to a cosmetic package comprising a container for a cosmetic composition, a closure for the container, a cosmetic applicator which is attached to the closure by a shaft and a wiper to wipe excess cosmetic from the applicator. In order to enable the user of the cosmetic package to retain on the cosmetic applicator the quantity of cosmetic composition which is desired for a given purpose, the cosmetic package further comprises an adjusting means to vary the cross-sectional area of the orifice of the wiper.
Patent CA-1127080-A (CA)
Title: Combination ldh   invertase
Inventor: LEMBKE ANDREAS
IPC: A23L29/00
Filed: 1979-01-29
Granted: 1982-07-06
Abstract: ABSTRACT         This specification discloses oral or edible compositions and their manufacture.  It includes foods and pharmaceutical preparations containing sugar and very little water.  In particular it discloses hygienic agents for tooth and mouth care.  It is known that in the oral cavity foodstuffs, beverages and medicaments with a high sugar content lead, in the presence of micro-organisms, to the formation of so-called "plaques" and acid decomposition products which severely attach tooth enamel.  This effect is known by the name caries.  Caries is understood to be an initial attack on the surface of teeth which are then progressively destroyed by cavities being formed therein.  Thus the specification discloses an edible or oral composition which composition contains sugar and very little water and having a content of the enzymes lactate dehydrogenase and saccharose - inverting enzyme which limits promotion of tooth decay.  It appears that by adding lactate dehydrogenase in combination with a sucrose-inverting enzyme, an inhibition system is incorporated into foodstuffs and con-fectionery of low water content or containing no water, and when these products are eaten, this system counteracts the harmful effect, in the presence of cariogenic bacteria, of the products formed by the decomposition of sugars, and converts the food-stuffs, in particular confectionery, and the pharmaceutical preparations into non-cariogenic or anticariogenic foodstuffs and pharmaceutical preparations which are not harmful to teeth.          This preferably comprises foodstuffs with a residual moisture content of 0.1 to 2%.  It includes foodstuffs which contain a proportion of naturally occurring sugars, such as sucrose, glucose, fructose and the like, as well as sugar alcohols, as - a -sugar substitutes.  Foodstuffs containing sucrose are particularly preferred.  If appropriate, foodstuffs or con-fectionery or pharmaceutical preparations which contain no customary sugars can be used.  These can be materials which are sweetened on the basis of sugar substitutes, for example saccharin, cyclamate, protein sweeteners extracted from tropical plants, xylitol and the like.  The sugar containing foodstuff is intended in particular to comprise confectionery, such as bakery products, sweets, chewing gum, etc.     - b -
Patent CA-1137617-A (CA)
Inventor: PROUGH JAMES R
IPC: G01F23/296
Filed: 1979-03-09
Granted: 1982-12-14
Abstract: ABSTRACT OF THE DISCLOSURE      An assembly and method for determining the level of sound receivers are mounted at spaced verti-cal positions to the exterior of the vessel along a generally vertical line, and a sound generator is mounted atop the vessel approximately 180° around the circum-ferences of the vessel from the receivers.  The sound waves are intermittently or cyclically generated by the sound generator, they are received by the receivers, and evaluated.  For those receivers mounted below the level of the solids, the energy received will be low, while for those mounted above the solids level in the fluid phase of the vessel, the energy received will be high.  For cellulosic chips, the receivers are tuned to respond primarily to sound at a frequency of about 3200 Hz. Alternatively, a number of sound generators are mounted at spaced vertical positions along the vessel, and a single receiver is mounted in operative association with the vessel fluid phase, the generators being selectively actuated for given time periods, and the receiver output being displayed relative to each generator actuation.
Patent CA-1098799-A (CA)
Inventor: SHEPPARD PETER H
IPC: B62D5/24
Filed: 1979-04-30
Granted: 1981-04-07
Abstract: ABSTRACT An integral power steering gear assembly (10) includes a piston (11) and cylinder (13) combination having greater output efficiency through improved fluid balancing and cushioning of the piston at its ends. The improved cushioning utilizes oil capillary slots (50) fed with high pressure fluid from feed grooves (52,53) along the sides of the piston adjacent the output rack. In order to obtain the increased efficiency, the slots (50) are designed to have a shallow depth, preferably 0.001 inch - 0.0025 inch, which is sufficient to provide for high capillary attraction of the oil molecules to the slot (50).  The trapped oil molecules prevent slip stick action, that is, molecular interaction between the piston (11) and cylinder wall and thus improved reversibility, but at the same time, the oil molecules remain trapped or isolated within the walls of the slot (50) thereby minimizing leakage.  The operating oil is delivered with higher efficiency in the power steering unit by a bifurcated oil delivery passage (31) communi-cating with the inlet slot (22) of the piston. This provides fluidized balance and cushioning of the valve (20) within the piston, and also prevents starvation of the high pressure feed grooves (52,53) and capillary slots (50) for balancing and cushioning the piston within the cylinder.  Accordingly, improved reversibility of both the piston and the valve are obtained.
Patent CA-1087242-A (CA)
Inventor: HOLMES KENNETH P
IPC: H05B41/288
Filed: 1979-07-04
Granted: 1980-10-07
Abstract: FIXED FREQUENCY, VARIABLE DUTY CYCLE, SQUARE WAVE DIMMER FOR HIGH INTENSITY               GASEOUS DISCHARGE LAMP                ABSTRACT OF THE DISCLOSURE    A dimmer circuit for an HID lamp is provided for supplying a square wave current therethrough at a constant frequency, but whose duty cycle is variable dependent on a sensed current level.  The circuit employs a first pair of transistor switches for reversing polarity through the lamp at a low frequency rate.  Associated with each of those transistors is a circuit having a transistor switch connected to a drive circuit employing a timer network.  The timer network produces an output that is a square wave, the leading edge of which occurs at regular intervals at a high frequency rate.  The trailing edge occurs dependent on a dim/bright voltage setting and upon the amount of current through a sensing resistor in series with the lamp.
Patent CA-1119173-A (CA)
Inventor: MOTTA RAIMONDO
IPC: C07D237/14
Filed: 1979-07-12
Granted: 1982-03-02
Abstract: ABSTRACT OF THE DISCLOSURE:           A process for obtaining 4,5-dichloro-2-phenyl-3(2H)-pyridazinone  from 5-chloro-4-amino-2-phenyl-3(2H)-pyridazinone.  According to this process, 5-chloro-4-amino-2-phenyl-3(2H) pyridazinone is first diazotized to give the following compound of formula (I):                           (I) This compound of formula (1) is then recovered by dilution with water and filtration.  In a second stage, the so-recovered compound of formula (I) is reacted with thionyl chloride in accordance with the following reaction:       (I) The resulting 4,5-dichloro-2-phenyl-3(2H)-pyridazinone is finally recovered by dilution with water and filtration.
Patent CA-1118082-A (CA)
Inventor: LEPPER JAMES M JR
IPC: F22B1/30
Filed: 1979-07-18
Granted: 1982-02-09
Abstract: DIGITAL ELECTRONIC STEAM HUMIDIFIER CONTROL            ABSTRACT OF THE DISCLOSURE    Disclosed herein is 3 method and a digital electronic steam humidifier control for use with a humidifier system including an electrode boiler to provide a normally repetitive fill, boil, fill-on-drain cycle.  The humidifier control includes circuitry for providing an analog signal proportional to the electrode current, and a comparator network which receives the analog signal and a reference voltage and scaled voltages provided by additional circuitry to establish predetermined levels of electrode current at which the control responds.  The comparator network provides a plurality of digital outputs having a high or low state depending upon the magnitude of the electrode current, which outputs are coupled to logic circuitry including NAND gates and which operates to actuate electrically controlled fill and drain valves to vary the water level so that the electrode current varies between predetermined lower and upper current limits, and which also operates to temporarily cut off the power to the electrodes if the electrode current exceeds a predeter-mined over-current limit.  The logic circuitry also operates in conjunction with high water probes to prevent overfilling of the boiler and to cause boiling of the water without draining during start up so that the water acquires a predetermined higher level of conductivity so that the electrode boiler operates efficiently.  An abnormal operation light and high and low current indicators are also provided to inform an operator of the status of operation of the control.
Patent CA-1105790-A (CA)
Inventor: BAKER ARTHUR L
IPC: F24B7/04
Filed: 1979-07-19
Granted: 1981-07-28
Abstract: ABSTRACT OF THE DISCLOSURE         An improved wood burning stove for providing heated air to a room or similar area includes an enclosed fire chamber, a hearth at the bottom of the fire chamber, draft inlet means at the front of the fire chamber and a flue at the rear of the fire chamber.  Within the fire chamber is an enclosed air chamber having lower and upper portions; the lower portion communicates at the bottom of the stove with the ambient air and extends upwardly adjacent the rear wall of the fire chamber to a point below the flue, where it joins with the upper portion.  The upper portion of the air chamber extends upwardly toward the front of the fire chamber at an acute angle with the horizontal, preferably between five and twenty-five degrees; at the forward end of the upper portion the air chamber communicates with one or more air pipes which extend to the front of the stove and there open to the ambient air.  Ambient air is heated by passing it through the air chamber and air pipes after they have been heated by hot gases rising from a fire burning on the hearth; the hot gases contact the air pipes and the bottom surface of the air chamber's upper portion and, because their normal path of travel to the flue is altered by the positioning of the upper portion of the air chamber, contact the top surface of the air chamber's upper portion as well.
Patent CA-1143285-A (CA)
Inventor: BEVAN JOHN A
IPC: A61K51/00
Filed: 1979-07-30
Granted: 1983-03-22
Abstract: RADIOGRAPHIC SCANNING AGENT     Abstract A composition and method for the preparation of a technetium-99m-based scanning agent are disclosed.  The scanning agent is prepared from 99mTc, in a +3, +4 and/or +5 oxidation state, and a methanehydroxydiphosphonate bone-seeking agent which carries the radionuclide to bone mineral.  The methanehydroxydiphosphonate agent provides scan sharpness equivalent or superior to commercial scanning agents, and is superior for detecting myocardial infarcts, as compared with commercial scanning agents such as ethane-1-hydroxy-1,1-diphosphonate and methane-diphosphonate.
Patent CA-1115082-A (CA)
Title: Foundation beam and plant for the  manufacture thereof
Inventor: ANKARSWED SVEN J
IPC: E02D27/01
Filed: 1979-08-10
Granted: 1981-12-29
Abstract: CANADIAN PATENT APPLICATION     OF                     ANKARSWEDSHUS AB V.ANG.STER.ANG.S         FOR          FOUNDATION BEAM AND PLANT FOR THE MANUFACTURE THEREOF               Abstract of the Disclosure A foundation beam intended to constitute a re-maining form or shuttering and edge boundary for a house foundation.  The foundation beam is of L-shaped cross-section and along its length it has equidistant recesses which are provided with fastening means for retaining re-inforcement irons fitted in the foundation cast in situ.          A plant is also provided for making said foundation beam and this consists of an upwardly open form provided with preferably movable side form parts and a stationary inner form part, whereby two foundation beams turned upside down can be manufactured by pairs at the same time.