baber/WOPTO huggingface dataset:
Patent CA-1325067-C (CA)
Inventor: COLEMAN RICHARD D
IPC: B03D1/02
Filed: 1987-10-28
Granted: 1993-12-07
Abstract: TITLE       "A Method of Removing Pyritic Sulphur from Coal"     INVENTORS                    Richard D. Coleman Serge Croteau Charles E. Capes ABSTRACT OF DISCLOSURE Pyritic sulphur is removed from coal by mixing agglomerating oil with a slurry of the coal containing discrete particles of carbonaceous material and pyritic sulphur, and other mineral matter that may be present, the oil being added in an amount less than about 3 wt % of the total solids present in the slurry, and then micro-agglomerating the carbonaceous particles.  Pyritic sulphur, while showing a tendency to be hydrophobic, and having an affinity for the agglomerating oil, is weaker in either of these properties than carbonaceous coal, and so by adding a starving amount of agglomerating oil it preferentially agglomerates the carbonaceous particles leaving pyritic sulphur and mineral matter that may be present as discrete particles in the water.  Aeration/skimming of the micro-agglomerates is then carried out.  The skimmed micro- agglomerates are washed in water in low speed mixers to release weakly clinging pyritic sulphur from them, and then aeration/skimmed from the washing water, newly released pyritic sulphur and any other newly released inorganic substances.
Patent CA-1323878-C (CA)
Title: Process for synthesis of azetidine and novel intermediates therefor
Inventor: LO YOUNG S
IPC: C07D205/04
Filed: 1987-11-03
Granted: 1993-11-02
Abstract: PROCESS FOR SYNTHESIS OF AZETIDINE AND      NOVEL INTERMEDIATES THEREFOR                     ABSTRACT OF THE DISCLOSURE          A novel process is disclosed, for preparing azetidine and 2 or 3 methyl and ethyl azetidine free bases by reacting primary arylmethylamine having suitable bulk providing substituents attached to the methyl carbon and an appropriate propane derivative having leaving groups in the one and three positions in hot organic solvent containing a non-nucleophilic base and an amount of water sufficient to promote azetidine ring formation to give N-protected-azetidines and deprotecting by hydrogenolysis under acidic conditions to give an acid salt of the azetidines and thereafter flashing off vaporized azetidine from a hot, agitated strong base solution or slurry and condensing to give the liquid azetidine free bases.  Also disclosed are novel intermediates of the formulae:                            and   [wherein Ar is optionally substituted phenyl, biphenyl or naphthyl, R1 is alkyl, cycloalkyl or Ar, R is hydrogen, methyl or ethyl, X is a leaving group, and R3, R4 and R5 are hydrogen, methyl or ethyl, provided that only one of them may be other than hydrogen].  The desired azetidine and its methyl and ethyl derivatives are useful in the preparation of pharmaceutical agents.
Patent CA-1296717-C (CA)
Inventor: PARKER WILLIAM L
IPC: C07D417/12
Filed: 1987-12-17
Granted: 1992-03-03
Abstract: CRYSTALLINE SALTS OF [3S(Z)]1-2[[[1-(2-AMINO-4-THIAZOLYL)-2-[[2,2-DIMETHYL-4-OXO-l-(SULFOOXY)-3-AZETIDINYL]AMINO]-2-OXOETHYLIDENE]-AMINO]OXY]ACETIC ACID          Abstract of the Disclosure In accordance with the present invention an orally active monosulfactam antibiotics having a crystalline structure and thereby improved stability are disclosed.  The antibiotics comprise the dierythromycin (M? = erythromycin?H?)  salt or the dicholine (M? = HOCH2CH2N?(CH3)3) salt of the acid (M? = H?) having the formula   that is, [3S(Z)]-2[[[1-(2-amino-4-thiazolyl)-2-[[2,2-dimethyl-4-oxo-l-(sulfooxy)-3-azetidinyl]-amino]-2-oxoethylidene]amino]oxy]acetic acid.
Patent CA-1288621-C (CA)
Title: Vertical rotary braider
Inventor: GRAEFF BARRY L
IPC: D04C3/42
Filed: 1987-12-30
Granted: 1991-09-10
Abstract: VERTICAL ROTARY BRAIDER                        Abstract of the Disclosure A braiding machine having inner and outer tables mounted for counter-rotation about a vertical axis, a stationary, standing rib cam positioned beneath the outer table, a strand guide arm supported on the outer table and having a guide eye that travels in an arcuate path in which all points in the path are equidistant from the strand braid point and connecting and driving elements operably joining the rib cam and the guide eye arm to effect positive arcuate movement of the guide arm.
Patent CA-1284521-C (CA)
Title: Coiffe pour torche de travail a l'arc et torche correspondante
Inventor: DELZENNE MICHEL
IPC: H05H1/34
Filed: 1988-01-12
Granted: 1991-05-28
Abstract: Cette coiffe comprend une jupe en matière plastique de forme générale annulaire entourant à distance le nez de la torche, et une buse tubulaire en matière réfractaire s'emboîtant dans l'extrémité libre de la jupe. Applications aux torches de coupage plasma.
Patent CA-1301660-C (CA)
Title: Three-dimensional auditory display apparatus and method utilizing enhanced bionic emulation of human binaural sound localization
Inventor: MYERS PETER H
IPC: H04S1/00
Filed: 1988-01-21
Granted: 1992-05-26
Abstract: PATENT    ABSTRACT            An artificial, three dimensional auditory display which artificially imparts localization cues to a multifrequency component, electronic signal which corresponds to a sound source.  The cues imparted are a front to back cue in the form of attenuation and boosting of certain frequency components of the signal, an elevational cue in the form of severe attenuation of a selected frequency component, i.e. variable notch filtering, an azimuth cue by means of splitting the signal into two signals and delaying one of them by a selected amount which is not greater than .67 milliseconds, an out of head localization cue by introducing delayed signals corresponding to early reflections of the original signal, an environment cue by introducing reverberations and a depth cue by selectively amplitude scaling the primary signal and the early reflection and reverberation signals.
Patent CA-1290939-C (CA)
Title: Gas combustion type dryer
Inventor: YOSHINAGA SADAO
IPC: A45D20/06
Filed: 1988-02-18
Granted: 1991-10-22
Abstract: Abstract A gas combustion type dryer is provided wherein a liquefied gas is ignited by electric discharge and combusted to forcibly blow out heated air by a fan, while eliminating adverse effects of remaining heat after the stop of fan operation and maintaining the gas pressure constant.    A temperature controller is provided together with a combustor within a blowing barrel of a dryer main body, and a pressure regulator is provided together with a liquefied gas tank within a handle. The pressure regulator is coupled to the combustor with the temperature controller interposed therebetween.
Patent CA-1293246-C (CA)
Title: Cemented carbide tool
Inventor: FISCHER UDO K R
IPC: B28D1/14
Filed: 1988-03-09
Granted: 1991-12-17
Abstract: ABSTRACT          A tool or wear part comprises a cast iron or cast steel body carrying one or more cast-in inserts. Each insert com-prises a cemented carbide cutting or wearing element par-tially embedded in the body, and an enclosure completely surrounding the embedded portion of the element. The enclo-sure is cast-in with respect to the body and has a higher melting point than the body. The enclosure is connected by a metallurgical bond to the body and by a shrink-fit to the element.
Patent CA-1312228-C (CA)
Title: Vibration damped mirror apparatus for vehicles
Inventor: SCHMIDT WILLIAM P
IPC: B60R1/06
Filed: 1988-04-14
Granted: 1993-01-05
Abstract: ABSTRACT OF THE DISCLOSURE     A vibration damping apparatus for mirrors mounted on a movable vehicle.  The apparatus includes an elongated bar having outwardly extending, perpendicular, parallel spaced legs.  The legs are fastenably accrued within an attachment bracket accured or integrally formed on the back surface of each mirror member.  The mirrors may be pivoted about the longitudinal axis of each leg of the bar.           Connectors are provided for connecting portions of the post of the bar, adjacent to each leg member, to the vehicle.           This may be directly to the vehicle or attachment to a post attached directly by itself to the vehicle.
Patent CA-1310941-C (CA)
Title: Natural calcium carbonate ores
Inventor: GOLLEY CHRISTOPHER R L
IPC: B03B9/00
Filed: 1988-05-10
Granted: 1992-12-01
Abstract: ABSTRACT          NATURAL CALCIUM CARBONATE ORES     There is disclosed a process for purifying a calcium carbonate-containing mineral which process comprises the following steps:-a)  mixing the calcium carbonate-containing mineral with water and a dispersing agent to form a suspension containing from 60% to 80% by weight of the dry mineral;     b)  comminuting the suspension of calcium carbonate-containing mineral prepared in step a) to give a product containing not more than 5% by weight of particles which are retained on a sieve having a nominal aperture of 53 microns and not more than 50% by weight of particles which are smaller than 2 microns e.s.d.;     c)  subjecting the suspension containing from 60% to 80% by weight of the dry comminuted mineral prepared in step b) to froth flotation using a collector for disclouring impurities which colletor comprises a cation containing at least one long chain alkyl group having from 10 to 24 carbon atoms, to yield an underflow product containing the calcium carbonate-containing mineral from which substantially all discolouring impurities have been removed, and d)  further comminuting the underflow product of step c) to give a material of which at least 40% by weight of the particles have an equivalent spherical diameter smaller than 2 microns.
Patent CA-1298491-C (CA)
Title: Automatic power transmission belt tensioner
Inventor: USHIO KOZO
IPC: F16H7/08
Filed: 1988-05-20
Granted: 1992-04-07
Abstract: "AUTOMATIC POWER TRANSMISSION BELT TENSIONER"                 Abstract of the Disclosure An automatic power transmission belt tensioner having spring structure for providing a dual biasing of an idler roller against the power transmission belt.   The biasing structure provides a dual biasing of the arm carrying the idler roller including a biasing under torsion and a biasing under compression of the spring structure.  In one form, a pair of biasing springs is utilized, one for providing the torsion biasing and one for providing the compressional bi-asing. In another form, a single spring effects both of the dual biasing actions.  The compressional biasing structure includes a pair of cams having cooperating inclined surfaces for effecting compression of the compression spring as a function of the movement of the idler roller arm.
Patent CA-1306687-C (CA)
Inventor: NAKEL GUNTHER M
IPC: A23L1/304
Filed: 1988-06-28
Granted: 1992-08-25
Abstract: CALCIUM-IRON MINERAL SUPPLEMENTS               ABSTRACT OF THE DISCLOSURE    Nutritional mineral supplements comprise a mixture of a calcium source, especially calcium citrate-malate, and  an  iron-sugar  complex,  especially  iron  sucrate-malate.  Food and beverage compositions, especially juice beverages,  supplemented  with  these  calcium  and  iron materials are disclosed.
Patent CA-1286330-C (CA)
Title: Multi-level rotary maze
Inventor: BOSKOVIC BORIS
IPC: A63F9/08
Filed: 1988-07-04
Granted: 1991-07-16
Abstract: MULTI-LEVEL ROTARY MAZE     ABSTRCT OF THE DISCLOSURE       A multilevel rotary maze comprising a series of stacked maze elements which are rotatable relative to one another. Each or the elements has a series of apertures, at least one of the apertures passing therethrough, and at least a portion of the apertures define a serpentine path throughout the maze which can be attained upon selective sequential rotation of the maze elements to align predetermined apertures thereof. A ball is located in the maze to pass through the apertures as they are aligned.
Patent CA-1297661-C (CA)
Title: Coupling hose assembly
Inventor: DOOLEY RICHARD L
IPC: F16L21/06
Filed: 1988-07-11
Granted: 1992-03-24
Abstract: Abstract of the Disclosure A coupling hose assembly with a flexible hose and two clamps each bonded for only a minor portion of the length thereof to the hose, each positioned adjacent an end portion of the hose.  Ridges are formed in the hose on each side of each clamp to guide each lamp as it is being tightened.  The inside of the hose is provided with a cir-cumferential bead against which the ends of tubular members can be positioned so that they are inserted sufficiently in the hose so as to be in proper registry with the clamps, thereby ensuring that when the clamps are tightened they will constrict the hose uniformly about the tubular members to produce seals therebetween.
Patent CA-1321559-C (CA)
Title: Dust separator for gas stream
Inventor: HILGER TIMOTHY J
IPC: B01D45/04
Filed: 1988-07-13
Granted: 1993-08-24
Abstract: DUST SEPARATOR FOR GAS STREAM     Inventors:               Timothy J. Hilger, Kevin L. Noe ABSTRACT OF THE DISCLOSURE           A dust trap for flowing gases comprises an inlet conduit which terminates in a transverse wall for impact-type dust separation (i.e. inertial separation).  A side entry port is positioned adjacent the transverse wall.  The side entry port communicates with the circulation chamber defining an angled opposed wall in the opposite side of the chamber of the side entry port.  The angled, opposed wall is substantially perpendicular to gas flow through the side entry port, to cause flowing gas from the side entry port to split vertically into swirling upward and downward flow patterns for further dust separation.  The lower part of the circulation chamber is normally closed off from the exterior. The upper part of the circulation chamber communicates with an outlet conduit.
Patent CA-1331516-C (CA)
Inventor: SULZBACHER HORST
IPC: C21B13/14
Filed: 1988-07-28
Granted: 1994-08-23
Abstract: ABSTRACT OF THE DISCLOSURE:       There is disclosed a process of recovering molten  pig iron  or  steel pre-products from lumpy iron-oxide contain-ing charging substances. The charging subtances are reduced to sponge iron in a direct reduction zone,  the sponge iron is  smelted  in a meltdown gasifying zone under  supply  of carbon  carriers and oxygen-containing gas forming  a  coal fluidized  bed,  and  CO and H2 containing reduction gas is produced,  which is injected into the direct reduction zone and reacted there.  For the commercial utilization of  low-quality scrap grades, such as, e.g., automotive scrap, a)  scrap  is  charged into the meltdown gasifying  zone in addition to sponge iron, b)  the scrap has an apparent weight of between 300  and 1000  kg/m3,  preferably between 400 and 600  kg/m3, and c)  the   temperature  of  the  coal  fluidized  bed  is maintained at 1,500 to 1,700°C, The scrap passes the coal fluidized bed, is carbonized and  is  smelted  by maintaining reducing  conditions,  and possibly present organic impurities are pyrolyzed.
Patent CA-1302697-C (CA)
Title: Apparatus and method for repair of shatterproof glass
Inventor: MATLES WILLIAM B
IPC: B29C31/04
Filed: 1988-08-30
Granted: 1992-06-09
Abstract: IMPROVED APPARATUS AND METHOD FOR   REPAIR OF SHATTERPROOF GLASS                           Abstract Apparatus and method for repairing conical cracks in shatterproof glass which are located close to the edge of the glass.  Employing known vacuum repair apparatus, a second, smaller vacuum cup is placed in fluid communication with the known apparatus.  The second cup can receive glass repair liquid for delivering to the crack to be repaired.  All the full-sized advantages of existing apparatus are achieved while permitting repair of cracks located quite near the edge of the glass.
Patent CA-1305682-C (CA)
Title: Catalytic two-stage coal hydrogenation process using extinction recycle of heavy liquid fractions
Inventor: COMOLLI ALFRED G
IPC: C10G65/10
Filed: 1988-10-14
Granted: 1992-07-28
Abstract: ABSTRACT OF THE DISCLOSURE     A  process  for catalytic  two-stage  hydrogenation  and liquefaction of coal with selective extinction recycle of all heavy liquid fractions boiling above a distillation cut point of about 600-750°F to produce increased yields of low-boiling hydrocarbon liquid and gas products.   In the process,  the particulate  coal  feed  is  slurried with a process-derived liquid solvent normally boiling above about 650°F and fed into  a  first  stage  catalytic  reaction  zone  operated  at conditions which promote controlled rate liquefaction of the coal,  while  simultaneously  hydrogenating  the  hydrocarbon recycle oils.   The  first  stage  reactor  is maintained  at 700-800°F  temperature,   1000-4000  psig hydrogen  partial pressure,  and 10-90 lb/hr per ft3 catalyst space velocity.          Partially  hydrogenated  material  withdrawn  from  the  first stage reaction zone is passed directly to the second stage catalytic reaction zone maintained at 760-860°F temperature for further hydrogenation and hydroconversion reactions.   A 600-750°F+ fraction containing 0-20 W % unreacted  coal and ash  solids is recycled to the coal slurrying step. If desired, the cut point lower boiling fraction can be further catalytically hydrotreated. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, to provide significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of  hydrocarbon  gases,  and  no net production of undesirable heavy oils and residuum materials.
Patent CA-1277680-C (CA)
Inventor: MATSUO NORITADA
IPC: C07C45/00
Filed: 1988-11-16
Granted: 1990-12-11
Abstract: ABSTRACT OF THE DISCLOSURE              The invention relates to a compound of the formula   wherein X is hydrogen, chlorine or bromine and a process for preparing same.  The compounds are useful intermediate compounds for preparing 2,2,3,3-tetramethylcyclopropane-1-carboxylic acid which is itself a very useful intermediate for synthesizing insecticidal and acaricidal compounds of pyrethroid type.
Patent CA-1312142-C (CA)
Title: Linkage mechanism for program isolation
Inventor: BAUM RICHARD I
IPC: G06F21/14
Filed: 1988-11-28
Granted: 1992-12-29
Abstract: LINKAGE MECHANISM FOR PROGRAM ISOLATION                 Abstract Of The Disclosure A computer system has general purpose registers, control registers and access registers for containing information to allow address space capability.  A linkage stack uses protected address space to store state information during program call and program return operations. The linkage stack contains information relating to state entries for the saved information and header and trailer entries to point to other linkage stack sections.  A control register contains the pointer to the current linkage stack entry and is changed as the program call or return moves through the stack.
Patent CA-1310888-C (CA)
Title: Saw chain for a motor-driven chain saw
Inventor: NITSCHMANN KARL
IPC: B27B33/14
Filed: 1988-12-16
Granted: 1992-12-01
Abstract: Abstract of the Disclosure The invention is directed to a saw chain for a motor-driven chain saw equipped with a guide bar and for which lubricating oil is continuously supplied during operation.          The lubricating oil reaches the guide groove of the guide bar and from there is directed to the pivotal joints of the saw chain.  The lubricating oil is taken up by the foot portions of the center links of the saw chain which engage the guide groove.  Groove-like channels are provided in a side face of these foot portions of the center links via which the lubricating oil is conducted to the pivotal joints.  Since the lubricating oil is introduced at only one or two locations of the guide bar in the vicinity of the housing of the chain saw, lubricant pockets are provided in the foot portions of the center links of the saw chain which are supplementary to the channels so that the center links can take along a greater quantity of lubricant.  This lubricant then reaches the pivotal joints through the channels especially at the forward end of the guide bar where the saw chain changes direction.          This flow of the lubricant to the pivotal joints occurs at the turn-around location because of the centrifugal force which acts on the lubricant as the saw chain moves around the forward end of the guide bar so that an adequate lubrication is assured even at this forward region and also at the lower portion of the turn-around region where the cutting action of the saw chain takes place.
Patent CA-1312694-C (CA)
Title: Aminoplast catalyst and composition
Inventor: QUINN ROBERT E
IPC: C08G12/12
Filed: 1988-12-23
Granted: 1993-01-12
Abstract: ABSTRACT      Aminoplast compositions are cured using a sulfur and phosphorus containing catalyst.  The sulfur and phosphorus containing catalyst for curing the aminoplast is typically a thiophosphoric, thiophosphonic or thiophosphinic acid or salt.  The cured aminoplast composition is useful for any of the typical uses of such materials.
Patent CA-1337184-C (CA)
Inventor: HOOPMAN TIMOTHY L
IPC: C25D1/02
Filed: 1989-01-23
Granted: 1995-10-03
Abstract: A sheet member having a plurality of channels for circulating fluids is made by providing a mandrel having a base portion and a plurality of elongated projecting ridge portions having elongated edges spaced above the base portion.  The ridge portions are separated by elongated grooves and have conductive surfaces.  A conductive material is electrodeposited on the conductive surfaces and is deposited on the edges of the ridge portions at a faster rate than on the surfaces defining inner surfaces of the grooves until the conductive material bridges across between the ridge portions to the envelope central portions of the grooves.  The sheet member thus formed has a base layer and a plurality of elongated projections extending from the sheet member base layer into each of the grooves, with each of the projections containing an elongated enclosed channel.  The mandrel is then separated from the sheet member and conductive material is electrodeposited on the conductive surfaces of the projections as described above until it bridges across between the projections to envelope central portions of the grooves and form additional elongated enclosed channels in the sheet member.
Patent CA-1326499-C (CA)
Title: Paddle wheel distributor system for printed products
Inventor: LANGE KLAUS-ULRICH
IPC: B65H29/40
Filed: 1989-04-20
Granted: 1994-01-25
Abstract: ABSTRACT OF THE DISCLOSURE.        To provide for gentle braking by braking fingers (12) located in axial slots between paddle wheel vanes or blades (9, 10) of paddle wheels (8), the fingers have an outer contour which is shaped and dimensioned, at least in the inlet region of  gaps (11) for the printed product forming an intersection angle  (.alpha.) defined by the axial projection between the contour of the braking fingers and the adjacent inner surface (91) of a vane or blade to continuously increase during rotation of the paddle wheel vanes or disks, to thereby define effective gaps of continuously decreasing width during rotation of the paddle wheel vanes.  Preferably, the position of the fingers is adjustable along a predetermined direction (X) by an electrical closed loop positioning sytem (13-20, 43), receiving input signals (44, 45) representative of thickness of products and machine speed and, preferably, also emergency control signals (48) to control the position of the fingers with respect to the vanes or blades.  Emergency control signals cause withdrawal of the blades to a maximum effective gap position, for example upon tearing of supply belts; increased braking by the fingers, with a narrowed gap, at different axial positions can be used to overcome skew of incoming or delivered products.