baber/WOPTO huggingface dataset:
Patent CA-1292434-C (CA)
Title: Process for racemizing an optically active n-benzylidene amino-acid amide
Inventor: BOESTEN WILHELMUS H J
IPC: C07C237/30
Filed: 1986-04-10
Granted: 1991-11-26
Abstract: ABSTRACT      The invention relates to a process for racemizing an optically active N-benzylidene amino-acid amide, characterized in that a solution of the N-benzylidene amino-acid amide is mixed in a water-miscible organic solvent with at least 0.05 mole strong base per litre solution.  The invention further relates to a process for preparing an L-amino acid by enzymatic separation of the corresponding DL-amino-acid amide with an enzyme preparation from Pseudomonas putida, in which process also unconverted D-amino-acid amide is left behind in solution, characterized in that benzaldehyde is added to the solution, during which addition a precipitate of D-N-benzylidene amino-acid amide is being formed, this precipitate is subsequently, after being separated off, dissolved in an acetone-water mixture, 0.08-0.15 mole KOH/Litre solution is subsequently added, the resulting solution is stirred for 1-20 hours at 20-60°C, sul-phuric acid is then added until the pH of the solution is 5 and the resulting sulphuric acid salt of the DL-amino-acid amide is finally, after isolation at pH 8-10, converted into the DL-amino-acid amide and this DL-amino-acid is used again.
Patent CA-1341104-C (CA)
Title: Antistat plastic materials containing epihalohydrin polymers
Inventor: YU SIMON HSIAO-PAO
IPC: C08G65/26
Filed: 1986-04-29
Granted: 2000-10-03
Abstract: Thermoplastic and thermoset materials containing an effective amount of an antistatic agent for improving antistatic properties thereof, the antistatic agent is selected from homopolymers and copolymers of an epihalohydrin.
Patent CA-1283635-C (CA)
Inventor: DENHAM KEITH
IPC: B21J15/06
Filed: 1986-09-10
Granted: 1991-04-30
Abstract: ABSTRACT     Apparatus for automatically installing blind rivets includes means for automatically feeding new rivets one at a time to the front of the rivet installation head.  Each rivet is supported in the appropriate position by a pair of support fingers (36,36) whilst the installation head (19) advances towards the rivet.  The rivet feeding means is provided with rivet guiding fingers (51,51) which guide the rivet stem (41) into the approaching anvil aperture (48) in the installation head.  As the installation head continues to advance, it pushes out of the way first the guiding fingers (51,51) and then the support fingers (36,36) so that the rivet can reach the workpiece and be installed in it.
Patent CA-1296461-C (CA)
Title: Aqueous dispersions
Inventor: BALL PETER
IPC: C08L27/06
Filed: 1986-09-19
Granted: 1992-02-25
Abstract: ABSTRACT OF THE DISCLOSURE   A process for the production of an emulsion polymerization aqueous copolymer dispersion  with a solids contents of 45-55% by weight of a)  75 to 95 parts by weight of acrylic acid and/or methacrylic acid alkyl esters of 1 to 10 carbon atoms of which 20 to 80% by weight have a water solubility of at most 2 g/1 and 20 to 80% by weight a water solubility of at least 10 g/1 b)  5 to 25 parts by weight of a mixture of ethylenically-unsaturated, func-tional and water soluble monomers, 25 to 100% by weight thereof consisting of unsaturated carboxylic acids. c)  500 to 1700 parts by weight of a mixture of 70 to 100% by weight of vinyl chloride, 0 to 30% by weight of at least one vinyl ester  of saturated car-boxylic acids of 2 to 18 carbon atoms and 0 to 1.5% by weight of a poly-unsaturated monomer which possesses a water solubility of at most 5 g/1, and d)  Ethylene with radical initiators in the presence of emulsifiers and option-ally other common additives, characterized in that (1) the components a) and b) together with 500 to 1000 parts by weight of water and 0.5 to 10 parts by weight of emulsifier are charged at a pH value of 2 to 4 in an autoclave, and their polymerization is begun at a temperature of 50 to 80°C by addition of an initiator, (2) the component c) is metered in in the form of an aqueous emulsion as soon as components a) and b) are reacted at least 50% and at most 99%, (3) during the metering   phase a pH value of 4.5 to 6.5 is maintained, (4) an ethylene pressure of 40 to 80 bars is built up at the time indicated in (2) and (5) before start of polymerization or at the latest at the time indicated in (2) 10 to 50 parts of an inert organic sub-stance having a water solubility of 10-3 to 200 g/1 and a molecular weight of at most 1000 are added.
Patent CA-1289186-C (CA)
Title: Control circuit for an electrical printing-press drive motor or similar
Inventor: RODI ANTON
IPC: H02P7/298
Filed: 1986-10-30
Granted: 1991-09-17
Abstract: Summary Control Circuit for an Electrical Printing-Press Drive Motor or similar A  control  circuit  for  an  electrical  printing-press drive motor contains firstly a power control element containing semi-conductors for the drive of the motor in the first torque direction, and a second power con-trol  element containing  semi-conductors  for drive of the  motor  in  the  other  torque  direction.  A circuit breaker is installed in order at least in case of fail-ure of a respective power control element to electric-ally isolate such power control element from the rest of the circuit and in order to connect the rest of the circuit with the other power control element in place of the defective power control element.  Downtimes in case of failure of a power control element can thus be reduced.
Patent CA-1304187-C (CA)
Title: Butene-rich butene-1 propylene copolymer shrink film
Inventor: HWO CHARLES C
IPC: C08J5/18
Filed: 1986-11-24
Granted: 1992-06-23
Abstract: ABSTRACT         A blend suitable for use in producing heat shrinkable, thermoplastic films of good clarity and good proaessability, comprises a mixture containing (i) 10 to 60% by weight of a butene-1/propylene copolymer, wherein the propylene comonomer content is from 5 to 40 mole percent, and (ii) 40 to 90% by weight of a propylene homopolymer or copolymer.
Patent CA-1285849-C (CA)
Title: Valve component for a frictionless guided valve
Inventor: WILLIAMS DAVID G
IPC: F16K15/08
Filed: 1986-12-18
Granted: 1991-07-09
Abstract: ABSTRACT     A VALVE COMPONENT FOR A FRICTIONLESS GUIDED VALVE    A composite valve plate for use in a plate-type non-return valve comprises an outer valve closure member (8) having a central aperture (9) and a planar guide member (1) locatable in said central aperture (9) and being capable of providing frictionless guidance of the valve closure member (8), with said guide member (1) being locatable within said aperture (9) by location means (4, 5, 6).
Patent CA-1278315-C (CA)
Title: Method and apparatus for removing water from ethanol
Inventor: WHELDON ALFRED G
IPC: C07C29/86
Filed: 1987-01-16
Granted: 1990-12-27
Abstract: ABSTRACT OF THE DISCLOSURE Method and Apparatus for Removing Water from Ethanol A method and apparatus  for removing water from a liquid mixture  of water  and  ethanol  contacts  it with liquid   carbon   dioxide   so   that   the   ethanol   is preferentially  transferred  into  solution,  dries  the solution  using  an  adsorbent,  and  then  recovers  dry ethanol  by  distilling  off  the  carbon  dioxide.   This process is particularly energy efficient especially when it  includes  a  fermentation  process  to  generate  the ethanol and uses the carbon dioxide generated during the fermentation as the source of liquid carbon dioxide.  In this case the method and apparatus provide an additional product of dry carbon dioxide.
Patent CA-1276490-C (CA)
Title: Scanning apparatus and method
Inventor: THORESON ROBERT J
IPC: G06T1/00
Filed: 1987-02-04
Granted: 1990-11-20
Abstract: SCANNING APPARATUS AND METHOD    Abstract of the Invention A scanner and scanning method for scanning a sheet such as a chart. The scanner includes scanning means and detection means. The scanning means includes means for supporting and mounting the sheet, and illumination means for directing light onto an illuminated area of the sheet, the illuminatedarea being elongated along a scan direction. The scanning means also includes means for causing the illuminated area to move across the sheet in a movement direction normal the scan direction. The detection means comprises a photodetector array and a coherent fiber optic bundle. The coherent fiber optic is tapered, such that it has a comparatively wide aperture adjacent the illuminated area, and a comparatively small aperture adjacent the photodetector array. In a related aspect, the illuminated area is caused to move in a first direction across the sheet such that the illumination means sequentially directslight onto a series of pixel areas of the sheet. The color of the light is varied such that as the illuminated area moves across the sheet in the first direction,the color of the light alternates between first, second and third illumination colors, thereby alternately illuminating the pixel areas with the illumination colors. An illumination color signal is produced for each pixel area. The processing means detects light reflected from each pixel area to produce an intensity signal, and color processing means combines the illumination color andintensity signal for each pixel area with the same signals from two adjacent pixel areas, to provide a pixel color signal representing a composite color for the pixel area. Means are provided for processing sequences of pixel color signals to eliminate transition colors.
Patent CA-1278941-C (CA)
Title: Self-leveling agricultural implement
Inventor: BIRKENBACH EUGEN J
IPC: A01B63/22
Filed: 1987-03-30
Granted: 1991-01-15
Abstract: ABSTRACT OF THE DISCLOSURE A self-leveling agricultural implement is disclosed which has been particularly configured for maintaining the frame of the implement in a level disposition as it is raised and lowered by relative movement of its hydraulically-operated supporting wheels.  The construction includes a pivotal draft hitch at a forward end of the implement frame, and a leveling linkage which operatively connects the draft hitch with a rockshaft of the implement which is operatively connected with its hydraulic actuators. Thus, as the actuators operate to relatively raise and lower the implement wheels, attendant rotation of the rockshaft acts to pivot the draft hitch relative to the frame, whereby the level disposition of the frame is maintained.  The construction desirably includes an adjustable link which operatively connects the pivotal draft hitch with the leveling linkage, whereby the implement is readily adjustable for use with different tractors having differing drawbar heights.
Patent CA-1297196-C (CA)
Title: Modem with improved digital signal processor
Inventor: EASLEY MATTHEW F
IPC: H04J3/06
Filed: 1987-07-07
Granted: 1992-03-10
Abstract: "MODEM WITH IMPROVED DIGITAL SIGNAL PROCESSOR"                         Abstract A modem with an improved digital signal processor is described.  A first processor (12) controls the overall. operation of the modem and communicates with an external device (not shown) through  a  connector  (10).   A  second  processor  (34)  performs signal processing on both transmitted and received data signals in  a  manner  which  saves  both  time  and  memory  space.    The processes which are described comprise a  2400 bit per second handshake signal detector, a fast linear-to-mu law converter, the transmitter signal generator, a fast-acting non-linear automatic gain control, a jitter-free transmitter phase-locked loop, a baud clock  timing  recovery  circuit  and  a phase  and  amplitude modulator.   Also described  is  a protocol for exchanging data between the processors (12) (34).  A logic gate array (15) allows the processors (12) (34) to communicate with each other and also performs other functions.  Therefore, each of the processors (12) (34) performs the operations for which it is most suited by its design.
Patent CA-1291782-C (CA)
Inventor: WEHMEYER DONALD T
IPC: B29C65/54
Filed: 1987-07-10
Granted: 1991-11-05
Abstract: SCAFFOLD SYSTEM                 Abstract of the Disclosure A  portable  scaffold  having  tubular  structural elements has necked fittings extending into the ends of the tubular  elements and attached thereto by adhesive which  is introduced  through  an  entry port preferably provided  by  a porting ring sleeved on the neck of each fitting and opposed by an O-ring.   The adhesive flows from the entry port through longitudinal and circumferential grooves in the neck between the porting ring and O-ring and vents through a vent port in the porting ring.
Patent CA-1317092-C (CA)
Title: Process for reheating flue gases after wet cleaning by contact with sulphuric acid
Inventor: DOERR KARL H
IPC: B01D53/34
Filed: 1987-07-17
Granted: 1993-05-04
Abstract: A PROCESS FOR CLEANING FLUE GASES     ABSTRACT OF THE DISCLOSURE     Cleaned flue gases normally accumulate as steam-saturated gases with temperatures of from 40 to 55°C after wet cleaning processes for the removal of sulfur and/or nitrogen compounds.  Before being let off through a stack, however, these gases have to he heated to at least 72°C.  This invention relates to a process for reheating flue gases after wet cleaning.
Patent CA-1278776-C (CA)
Title: Production of a taper rod
Inventor: KAWAKAMI HEIJIRO
IPC: C21D8/06
Filed: 1987-07-17
Granted: 1991-01-08
Abstract: ABSTRACT OF THE DISCLOSURE     A taper rod producing process by which a taper rod having a profile very near to an aimed profile can be produced with high accuracy.  According to the process, during working of a wire diameter gradually decreasing portion of a taper rod in which the diameter of a stock gradually decreases in a feeding direction of the stock, the drawing length of the stock from starting to ending of acceleration of variable speed feeding means is made greater than an aimed length of the wire diameter gradually decreasing portion, and during working of a wire diameter gradually increasing portion in which the diameter of the stock gradually increases, the drawing length of the stock from starting to ending of deceleration of the variable speed feeding means is made smaller than an aimed length of the wire diameter gradually increasing portion of the taper rod.
Patent CA-1295276-C (CA)
Title: Upgrading naphtha in a single riser fluid catalytic cracking operation employing a catalyst mixture
Inventor: HERBST JOSEPH A
IPC: B01J8/24
Filed: 1987-09-02
Granted: 1992-02-04
Abstract: UPGRADING NAPHTHA IN A SINGLE RISER FLUID CATALYTIC   CRACKING OPERATION EMPLOYING A CATALYST MIXTURE                      ABSTRACT OF THE DISCLOSURE          The present invention discloses a catalytic cracking operation featuring a single riser in which a variety of hydrocarbon conversion reactions takes place, a stripping unit in which entrained hydrocarbon material is removed from catalyst and a regeneration zone in which spent cracking catalyst is regenerated, which comprises:           a) converting a relatively high boiling charge material introduced to the riser at a lower level thereof in the presence of a first catalyst component which is an amorphous cracking catalyst and/or a large pore crystalline silicate cracking catalyst to provide lighter products including significant quantities of naphtha; and, b) converting a naphtha charge material introduced to the riser at a higher level thereof in the presence of a second catalyst component which is a shape selective medium pore crystalline silicate zeolite catalyst to provide a relatively high octane gasoline product.
Patent CA-1296022-C (CA)
Title: Preparation of o-substituted hydroxylamine hydrochlorides
Inventor: WILL WOLFGANG
IPC: C07C239/20
Filed: 1987-09-11
Granted: 1992-02-18
Abstract: Abstract of the Disclosure:  O-substituted hydroxylamine hydrochlorides I                 R-O-NH2 . HCl            (I) where R is C1-C4-alkyl, C3- or C4-alkenyl, C3- or C4-haloalkenyl or benzyl, are prepared by continuous hydroly-sis of the corresponding acetoxime ethers II           (II) in a reaction column containing from 20 to 60 theoretical plates with constant removal of the acetone eliminated, using hydrogen chloride and water.
Patent CA-1278337-C (CA)
Title: Liquidproof battery-powered appliance
Inventor: KURIYAMA SHUNICHI
IPC: H01M2/10
Filed: 1987-09-18
Granted: 1990-12-27
Abstract: ABSTRACT OF THE DISCLOSURE         In a liquidproof battery-powered appliance, a battery insertion opening formed in the bottom of a battery accommodation casing accommodating a rechargeable battery and provided with parts including a motor and a printed circuit board is closed liquidtight by a cover member provided with a gas vent valve, and, after insertion of the battery accommodation casing into a body casing through a bottom opening of the body casing, the bottom opening is closed liquidtight by a flange formed at a peripheral edge of the battery insertion opening of the battery accommodation casing,  By the above arrangement, the casings can be simply and reliably sealed liquidtight, and gas that may be generated in a very large amount from the battery in an unusual operating condition can be safely and reliably exhausted to the outside of the appliance.
Patent CA-1282560-C (CA)
Title: Drain-cleaning implement
Inventor: KAYE PAUL S
IPC: B08B9/04
Filed: 1987-10-01
Granted: 1991-04-09
Abstract: ABSTRACT OF THE DISCLOSURE      A drain-cleaning implement having a plastic shell of two subshells snapped together using male and female mating means along abutting edges and having a snake coiled within the shell and exerting outward mating force on it.  The male means are on projections extending from inwardly-projecting sidewall portions formed at intervals around the inside surface of one subshell, and such inside surface has substantially edge-free transitions between the inwardly projecting portions and positions therebetween to strengthen the shell with maximum mating force from the snake.  Preferred embodiments have corner-free mating means.  A stop ledge facilitates proper mounting of a rotatable handle.
Patent CA-1288445-C (CA)
Title: Apparatus for processing filleted flat-fish
Inventor: MEYN PIETER
IPC: A22C25/16
Filed: 1987-10-01
Granted: 1991-09-03
Abstract: ABSTRACT OF THE DISCLOSURE            According to the invention an apparatus for processing filleted flat-fish comprises a conveyor means for the fillets and processing devices positioned beside the conveyor means.  These processing devices, in the form of rotating brush means that move in a plane perpendicularly to the plane of the transport of the fillets, remove the fat-brims of the fillets.
Patent CA-1322098-C (CA)
Inventor: GARAT MICHEL
IPC: B22D27/13
Filed: 1987-11-16
Granted: 1993-09-14
Abstract: 1. A lost foam casting process for the casting of metal objects, in particular of aluminium and its alloys, in which a pattern of the product to be obtained which is produced from a foam of organic material is immersed into a mould constituted by a bath of dry sand containing no binder, characterised in that an isostatic gas pressure is applied by a gradual increase to the selected value to the mould after ? the mould has been filled with the molten metal and before the solidified fraction of metal exceeds 40 percent by weight.
Patent CA-1320382-C (CA)
Title: Aqueous gel comprising carrageenan
Inventor: NORTON IAN T
IPC: A23L21/10
Filed: 1987-11-23
Granted: 1993-07-20
Abstract: L 7074 (R) AB                 ABSTRACT     The invention pertains to aqueous gels, gel-forming compositions and composites containing the same, comprising carrageenan and a cation of such a type and in such a concentration that the gel has a transition midpoint temperature below 45°C and a yield stress of at least O.5 kN/m2 at 5°C. The gels or gel-forming compositions can advantageously be used in food and toiletry products.
Patent CA-1277336-C (CA)
Inventor: ABE KAZUAKI
IPC: C07C13/62
Filed: 1987-11-25
Granted: 1990-12-04
Abstract: ABSTRACT OF THE DISCLOSURE    This invention provides a novel perhydrofluorene derivative which is represented by the following general formula and which is useful as a fluid for traction drive and a process for production of the derivative.                                     [ 1 ]     wherein R1, R2 and R3 each represents a hydrogen atom or an alkyl group of 1-4 carbon atoms, X represents ?CH2?p  or   wherein R4 represents a hydrogen atom or an alkyl group of 1-4 carbon atoms, p represents a real number of 2-6, q represents a real number of 1-4 and s represents 1 or 0 and k, m and n each represents a real number of 1-4.
Patent CA-1317330-C (CA)
Title: Seal
Inventor: PRIBIS PAUL B
IPC: H01R39/64
Filed: 1987-12-17
Granted: 1993-05-04
Abstract: Docket 35-OR-875 ABSTRACT     A decompression seal mechanism has a body containing a series of cavities formed by alternate grooves and lands and formed of a porous structure deposited by a plasma spray, and means for supplying said porous structure with a positive flow of liquid lubricant.
Patent CA-1307771-C (CA)
Title: Bags for containing liquids
Inventor: STEER PETER L
IPC: A61F5/44
Filed: 1988-01-12
Granted: 1992-09-22
Abstract: ABSTRACT BAGS FOR CONTAINING LIQUIDS A bag 10 for containing liquids is formed by welding together two plastic sheets around their peripheries and includes a neck portion 11 for connection to an outlet. An outlet tube 13 is partially inserted into the neck portion leaving a part of the tube with an upstanding seal member 17 outside the neck portion. A sleeve 18 is passed over the neck portion and the sleeve is shrunk into place, urging the neck portion 11 into tight engagement with the outlet tube 13 and effecting a seal between the sleeve 18 and the seal member 17 on the outlet tube 13.
Patent CA-1300197-C (CA)
Title: Catamaran-camper-trailer
Inventor: LEJUERRNE RICHARD J
IPC: B60P3/10
Filed: 1988-01-29
Granted: 1992-05-05
Abstract: Abstract of the Disclosure.    A catamaran/camper/trailer combination having the catamaran straddling the camper vehicle is supported by the trailer.   The camper disassembles  from a compact,  traveling position  into an erect position that includes a seating/sleeping area, a stove-sink assembly,  a pair  of moisture-proof  fabrics,  and  a  collapsible door.
Patent CA-1300591-C (CA)
Inventor: BODINE ALBERT G
IPC: E21B7/24
Filed: 1988-02-19
Granted: 1992-05-12
Abstract: ROLLER TYPE ORBITING MASS OSCILLATOR WITH LOW FLUID DRAG          ABSTRACT OF THE DISCLOSURE       A cylindrical rotor is mounted for rotation in a raceway formed in the inside wall of a housing, the outside diameter of the rotor being only slightly less than the inside diameter of the raceway so that the rotor substantially fills the housing.  One or more relatively high mass cylindrical rollers is each contained in a cavity or pocket formed in the outer wall of the rotor, each such roller being free to roll within its pocket and to move radially outwardly by virtue of the centrifugal force generated and to roll around in the raceway with the rotor and roller or rollers filling the housing and riding somewhat closely against the housing wall.  This effectively fills all of the space in the housing and prevents the formation of a fluid filled "traveling" space in the housing thereby minimizing roller drag due to fluid turbulence.
Patent CA-1309968-C (CA)
Inventor: RIGNON MAURICE
IPC: C25B3/25
Filed: 1988-04-15
Granted: 1992-11-10
Abstract: A process for reducing aliphatic nitro compounds to the corresponding nitroalcohols. Chemical electroreduction is performed on a bimetallic cathode consisting of a copper support metal and a zinc or cadmium active element.