baber/WOPTO huggingface dataset:
Patent CA-2156125-A1 (CA)
Inventor: GRAY JOHN M
IPC: C01B11/02
Filed: 1995-08-15
Abstract: The invention relates to a process of producing chlorine dioxide comprising the steps:  Providing a reactor with an aqueous  acidic  reaction  medium  containing  alkali  metal chlorate and sulfate; reducing chlorate ions in said reaction medium to form chlorine dioxide; maintaining the reaction medium at subatmospheric pressure sufficient to evaporate water  and  precipitate  alkali  metal  sulfate;  withdrawing chlorine  dioxide  and evaporated water  from the  reactor; withdrawing reaction medium containing solid alkali metal sulfate from the reactor and separating the solid material from  said  reaction  medium;  transferring  reaction  medium substantially free from solid alkali metal sulfate to an electrochemical cell in which the acidity of said reaction medium is increased and the content of alkali metal ions is decreased;  recycling  electrochemically  acidified  reaction medium to the reactor for producing chlorine dioxide; and adding make up alkali metal chlorate and sulfuric acid.
Patent CA-2156458-A1 (CA)
Title: Pressurized-fluid workhead for permanent bell-forming of end tracts of plastic pipes, for use in automatic bell-forming machines
Inventor: SAVIOLI LEOPOLDO
IPC: B29C57/02
Filed: 1995-08-18
Abstract: The invention relates to a pressurized-fluid workhead for permanent bell-forming of tracts of ends of plastic pipes, comprising: a die exhibiting a cavity for receiving a thermally plasticized end tract of a pipe, being provided with flow conduits for a pressurized fluid; a forming buffer, insertable into the end tract of the pipe and further exhibiting flow pipes for a pressurized fluid; a flange mounted coaxially and slidably with respect to the buffer and die, and having a striking surface which is associable to an edge of the end tract of the pipe. The die, the buffer, the flange and the pipe define a first and a second pressure chamber of a fluid; the pressure chambers being fed by the conduits to dilate and contract the end tract of the pipe, to produce a ribbing of the pipe.
Patent CA-2157119-A1 (CA)
Title: Atomisation of liquids
Inventor: ROWLAND STEPHEN JAMES
IPC: A61M15/00
Filed: 1994-03-04
Abstract: The invention relates to the atomisation of liquids. There are many fields of application where a spray, mist, or jet of fine droplets is required and where control over droplet size is important.  Of particular significance is the medical field and the nebulising of drug to be administered to a patient by the inhaled route, where the deposition of the drug and its efficacy is a direct function of the droplet size. The object of the invention is to improve the control over droplet size, an objective met by a method and a orifice where liquid is centrifugally forced through an orifice sized to generate a droplet (27) of the liquid of a required size. Thus, the liquid maybe introduced into a drum (14) with sized holes (26) or pores in its wall or into a rotor formed by plates (1,2) secured together with a spacing to provide an annular orifice (4) of a required size, the rotation of the drum (14) or rotor causing the forcing of the liquid through the holes (26) or pores, or through the orifice (4), the centrifugal force and the Bernoulli effect causing the liquid to issue in the form of droplets (27) of a predetermined size.
Patent CA-2159932-A1 (CA)
Title: Absorbent Sanitary Article
Inventor: PALUMBO GIANFRANCO
IPC: A61F13/15
Filed: 1995-10-05
Abstract: A  fluid  absorbent  sanitary  article,  such  as  a pantiliner, is provided for use with a panty garment.          The liner is attachable to the panty crotch by means of adhesive.  The  liner  is  elastic  in  at  least  one direction,  has a thickness of less  than 2mm,  and is flexible.  The liner is composed of a layer of absorbent material joined by an adhesive connection face-to-face with a backsheet, and optionally by a further adhesive connection to a topsheet. At least one of the components of the pantiliner is elastic,  any inelastic components being stretchable.   Preferably,  at  least  one  of  the adhesive connections is elastic.   The liner has a low pad set.
Patent CA-2161339-A1 (CA)
Title: A cover for swimming pools
Inventor: WESTLUND STIG
IPC: E04H4/10
Filed: 1994-04-29
Abstract: This invention relates to a protection device for swimming pools and similar types of pools, which are provided with a surrounding pool edge, the protection device comprising a pool cover which can be pulled or folded out for covering the pool and be pulled, retracted or folded in for decovering the pool. According to the invention the pool cover comprises a first end portion which is connected to a first, elongated carrier (3; 27), and a second, opposite end portion which is connected to a second, elongated carrier (4; 30). The first carrier (3; 27) is fastened to a fundament (5; 26) outside the pool edge, whereas the second carrier (4; 30) is pivotally arranged at the first carrier so that the pool cover from a retracted position can be brought to cover the pool by pivoting out the second carrier in relation to the first one.
Patent CA-2162412-A1 (CA)
Title: Crash Attenuator
Inventor: OBERTH MICHAEL H
IPC: E01F15/14
Filed: 1995-11-08
Abstract: A crash attenuator (10) for an exposed end (E) of a concrete highway barrier (B, Q) includes a light-weight array of sheet metal energy-absorbing elements (24, 26) interposed between diaphragms (14). The crash attenuator (10) is cantilevered from one end (E) of the barrier (B, Q) by a mounting arrangement that includes mounting tubes (54, 56) on the barrier (B, Q) and the attenuator (10) that can be quickly secured together by removable pins (62).  The energy-absorbing elements (24, 26) define a single row of tubular columns (34) in forward portions of the crash attenuator (10) and two rows of tubular columns (38) in rearward portions of the crash attenuator (10). Vehicle deflecting members (64, 74) extend between the barrier (B, Q) and the crash attenuator (10) and can fold against the barrier (B, Q) for storage.
Patent CA-2162837-A1 (CA)
Title: Bone plate shaping device
Inventor: RUNCIMAN JOHN
IPC: A61B17/88
Filed: 1995-11-14
Abstract: A device for contouring bone plates is described. The device has a first handle and a first jaw extending from a first end of the first handle. A second jaw is hinged at one end of the region of the junction of the first handle and first jaw, a second handle is hinged at one end to the second jaw between the ends of the second jaw. A strut is hinged to the second handle between the ends thereof, and extends to the first handle. The first and second jaws are provided with at least one set of complementary surfaces for contouring a bone plate.
Patent CA-2163784-A1 (CA)
Title: Multi-stage water treatment system
IPC: C02F9/00
Filed: 1994-02-08
Abstract: A treatment system for removing metal ions from water. Contaminated water is first passed through nanofiltration membrane system (22a-22d) and then through one or more columns (36, 40) having ion-extracting materials therein. The nanofiltration membrane system (22a-22d) involves at least one and preferably multiple nanofiltration membrane units (22a-22d) which are capable of removing metal ions from water. To remove any residual metal ions from the permeate generated by the nanofiltration member system (22a-22d), the permeate is passed through at least one and preferably multiple columns (36, 40) filled with porous polymer beads having metal ion extracting agents therein (e.g. biomass materials). As a result, highly purified water is produced. When saturated with ions, each bead-containing column (36, 40) is sucessively cleaned with acid solutions.
Patent CA-2166111-A1 (CA)
Title: A loading device for containers or the like
Inventor: SCHABELREITER JOHANN
IPC: B60P1/64
Filed: 1994-06-22
Abstract: A loading device for containers (L) comprises a pair of loading units (2) to be mounted on a vehicle frame (1), which loading units each have a telescopic column (4) sup-ported on a bracket (3) so as to be pivoted about a common swivel axis (I) extending in the longitudinal center of the vehicle frame (1), as well as operating cylinders (5) act-ing on both sides of the telescopic column (4) and pre-ferably longitudinally adjustable supporting legs (6) pi-votally supported on both sides of the bracket (3), where the extendable head portion (8) of the telescopic columns (4) carries a loading receiving means.           In order to achieve a stable, space-savingly usable con-struction, the operating cylinders (5) and the supporting legs (6) are attached to the brackets (3) independent of each other, and the load receiving means consists of a can-tilever arm (9) with an abutment (12) for the connection of a load receiving element, for instance a load carrying har-ness (13), which cantilever arm can perform a stop-limited swivel movement to both sides about a swivel axis (III) parallel to the swivel axis (I) of the telescopic column.
Patent CA-2166122-A1 (CA)
Inventor: MANN WILLIAM H
IPC: C08K5/00
Filed: 1994-06-21
Abstract: Alliages thermoplastiques élastomères à base d'uréthannes obtenus par combinaison en fusion et comportant au moins un premier composant consistant en un élastomère de type polyuréthanne contenant au moins un plastifiant ayant réagi dans celui-ci, et au moins un second composant. Le premier composant est obtenu par chauffage à au moins 165.6  DEG C d'un mélange de réaction comprenant dans des proportions spécifiques: au moins un isocyanate présentant une fonctionnalité d'environ 2,2, au moins un polyol à chaîne longue, au moins un prolongateur de chaîne et au moins un plastifiant. Le second composant est un autre élastomère thermoplastique n'entrant pas dans la définition du premier composant.
Patent CA-2166616-A1 (CA)
Title: Nickel-free hemoglobin and methods for producing such hemoglobin
Inventor: CHIVERS MARK L
IPC: C12P21/02
Filed: 1994-07-22
Abstract: According to the present invention removal of nickel from a nickel-containing hemoglobin solution is accomplished by exposing the nickel-containing hemoglobin solution to a chelating agent, preferably a multidentate acetic acid based chelator such as EDTA. Methods are provided that allow obtaining essentially nickel-free hemoglobin from nickel-containing hemoglobin solutions, particularly hemoglobin solutions that result from large scale fermentation and/or purification.
Patent CA-2166665-A1 (CA)
Inventor: SHERTS CHARLES R
IPC: A61B17/04
Filed: 1996-01-05
Abstract: A  surgical  apparatus  for  suturing  body  tissue comprising first and second jaws relatively movable between an  open  and  closed  position,  a  first  needle  retaining section having a first securing mechanism mounted therein removably mounted to the first jaw,  and a second needle retaining section having a second securing mechanism mounted therein removably mounted to the second jaw.   The surgical needle is transferable between the first and second sections upon closing of the jaws such that the surgical needle can be retained in either of the first and second sections by the respective securing mechanism.
Patent CA-2167179-A1 (CA)
Title: Examination of breast tissue using time-resolved spectroscopy
Inventor: CHANCE BRITTON
IPC: G01J3/28
Filed: 1994-07-15
Abstract: A method and a system (4) for breast tissue examination includes a time-resolved spectroscopy apparatus (20; 20A; 20B), a support (8; 9;  11; 12; 13) with an input port (14) and an output port (16) separated by a selected distance is positioned relative to the examined breast. A light source (32; 34; 60) generates pulses of electromagnetic radiation of a selected wavelength in the visible or infrared range. The pules are introduced into the breast tissue at the input port (14) and detected over time at the output port (16). Signals corresponding to photons of detected modified pulses are accumulated over time. Values of the scattering coefficient or the absorption coefficient of the examined breast tissue are calculated based on the shape of the modified pulses.  The examined breast tissue is characterized based on the values of the scattering coefficient or the absorption coefficient.
Patent CA-2169386-A1 (CA)
Inventor: WEIRATHMUELLER FRIEDRICH
IPC: B27B31/00
Filed: 1996-02-13
Abstract: A  stair-like  log feeder having a movable drive module and a movable driven unit cooperating with one-another for unscrambling logs from a pile of logs and for moving the singularized logs upwardly along an inclined plane in a successive series of displacements.  The log feeder comprises a support frame having support rollers for slidably supporting the drive module and the drive unit. A cyclic actuator is connected to the drive module by  a  link  arm,  for  moving  the  drive  module  in  an alternating up and down movement along  the  inclined plane.   A first pair of rack gears is affixed to the drive module, and a second pair of rack gears is affixed to the driven unit.   A pair of gears is mounted on a transverse  shaft  which  is  pivotally  affixed  to  the support frame.   The pair of gears is engaged with the first and second rack gears for supporting both the drive module and the driven unit in a pendulum mode about the transverse shaft, and for converting a movement of the drive module  into an  equal,  opposite and concurrent displacement of the driven unit.  Each step of the drive module has a riser portion forming an angle of between about 3° and about 6° with the inclined plane.  Similarly each notch of the driven unit has a longitudinal edge forming an angle of between about 5° and about 8° with the inclined plane.
Patent CA-2170217-A1 (CA)
Inventor: MORIMOTO MASAHITO
IPC: H04B10/07
Filed: 1996-02-23
Abstract: An optical power detector is provided which accurately detects the optical power of transmitted light and suffers almost no influence due to noise, and a multi-level digital transmission system which includes such an optical power detector. A beam of received light is incident into an entry end of a light fiber. A plurality of saturable absorbers are disposed in series along this light fiber, each having its own pair, differing in steps, of a first threshold value and a second threshold value which is greater than the first threshold value, and being substantially opaque to light of optical intensity below the first threshold value and substantially transparent to light of optical intensity above the second threshold value. A probe light source directs a beam of probe light to be incident upon each of the saturable absorbers in a direction crosswise to the light transmission path for the received light beam, when the received light beam is being transmitted led along the light fiber to be incident upon the saturable absorbers in order. For each of the plurality of saturable absorbers, an avalanche photodiode (APD) is provided, which receives the probe light beam via its corresponding saturable absorber due to the received light beam passing through this saturable absorber, and which does not receive the probe light beam via this saturable absorber due to the received light beam being absorbed by this saturable absorber. And an optical power read out means detectswhether or not probe light is received by each of the APDs which correspond to the saturable absorbers, thereby determines for each one of the saturable absorbers whether or not the received light beam has passed through it, and thus reads out the optical power of the received light beam.
Patent CA-2170808-A1 (CA)
Title: Apparatus for preventing deformation of stacks of flat objects during speed changes
Inventor: WOLF WOLFRAM
IPC: B65G47/82
Filed: 1996-03-01
Abstract: Successive  groups  of  stacks  of paper  sheets  are delivered onto the upper reach of an impermeable conveyor belt  which  is  thereupon  caused  to  advance  the  groups sideways  onto  another  conveyor.   In  order  to  prevent deformation of stacks during starting of the conveyor belt, the latter is temporarily coupled with a pusher which is adjacent the rear side of the adjacent last stack of the group to be advanced onto the other conveyor.  The coupling can be designed to establish a pneumatic connection between the impermeable belt and the pusher,  and such connection can be terminated as soon as the acceleration of the group of stacks to a selected speed is completed.  The pusher is thereupon retracted to a starting position.
Patent CA-2170960-A1 (CA)
Title: Vertical work center
Inventor: SWEERE HARRY C
IPC: G06F1/16
Filed: 1996-03-04
Abstract: Vertical work center for positioning of a computer monitor vertically and horizontally about a floor or ceiling mounted column.  A positionable arm pivotally secures at an upper portion of the mounting column.  The outward end of the position arm includes a tilt/swivel mechanism which supports a monitor caddy.
Patent CA-2171247-A1 (CA)
Inventor: KENNEDY TED JR
IPC: D04H13/00
Filed: 1996-03-07
Abstract: A protective sheet material of a laminate structure and a method of manufacture in which the sheet material has a plastic membrane layer joined to a layer of felt. Subsequent to the joining of the felt to the plastic membrane, the felt is saturated with petroleum wax including plasticizers and corrosion inhibitors. A second layer of felt can be joined to the opposite side of the plastic film to provide a sandwich of a plastic membrane between two layers of saturated felt. When this sheet material has been applied in an overlapping manner, there is a felt-to-felt seal at the overlap. The plastic and felt can be joined by heat fusion or by adhesives.
Patent CA-2172758-A1 (CA)
Inventor: CHARLOT LINCOLN H JR
IPC: G01S13/75
Filed: 1996-03-27
Abstract: A batteryless, portable frequency divider, such as used in presence detection systems for article surveillance or as used for article-location determination, includes a series LC resonant circuit connected directed across a parallel LC resonant circuit. One circuit is resonant at a first frequency and the other circuit is resonant at a second frequency that is a plural-integer-divided quotient of the first frequency. In one class of embodiments, either or both of the series and parallel resonant circuits includes a variable capacitance element, such as a varactor, in which the capacitance varies in accordance with the voltage across the variable capacitance element. The variation of the capacitance of the variable capacitance element in response to variations in energy in the higher-frequency resonant circuit resulting from receipt electromagnetic radiation at the first frequency causes the lower-frequency resonant circuit to transmit electromagnetic radiation at the second frequency. In another class of embodiments, the parallel circuit is resonant at the higher first frequency and the series circuit is resonant at the frequency-divided second frequency; the frequency divider includes a three-terminal semiconductor switching device having a control terminal, a reference terminal, and a controlled terminal, which is connected directly across both resonant circuits and between the inductance and the capacitance of the series resonant circuit and which switches on and off in response to variations in energy in the parallel resonant circuit resulting from the parallel resonant circuit receiving electromagnetic radiation at the first frequency to cause the series resonant circuit to transmit electromagnetic radiation at the second frequency.
Patent CA-2174525-A1 (CA)
Title: Customized proteases with altered transacylation activity
Inventor: BREDDAM KLAUS
IPC: C12N9/48
Filed: 1994-10-28
Abstract: The invention provides customized proteases (i.e. mutant enzymes),  e.g. carboxypeptidase Y, methods of making customized proteases, as well as methods of using customized proteases.  The customized proteases of the invention are derived from the known proteases.  Altered transacylation reactions include the capability to perform transacylation reactions not substantially catalyzed by the known protease or the capability to perform transacylation reactions with improved yields, or both.  The methods of the invention provide for customized proteases through site specific or random mutagenesis of the active site amino acids of the known proteases.  The invention also provide for methods of using the customized proteases to prepare a preselected transacylation products.  The preselected transacylation products produced can be modified by substitution at the N- or C-terminal with nucleophiles such as L-amino acids, D-amino acids, amino acid amides, and radioactive amino acids.
Patent CA-2175998-A1 (CA)
Title: Device for cleansing welding torches
Inventor: NILSSON VALTER
IPC: B23K9/32
Filed: 1994-10-26
Abstract: The present invention relates to a device for auto-matically cleaning and cutting off the wire in the nozzles of MIG/MAG welding equipment. It is characterized in that the device, which is portable, comprises a center-ing member (2) for insertion of a nozzle (1), and milling means (4, 5) to millcoated parts (6) of the nozzle, as well as possibly a cutting member (10) for the foremost part of the welding bead (7) of material applied, the milling means and cutting member if any (4, 5 and 10, respec-tively) being rotated by a drive means (3), designed to start automatically upon insertion of the nozzle (1).
Patent CA-2176766-A1 (CA)
Title: Indanylpiperidines as melatonergic agents
Inventor: MATTSON RONALD J
IPC: A61P25/24
Filed: 1996-05-16
Abstract: Certain indanyl piperidines are useful as melatonergic agents and can treat various CNS disorders. They are useful in treating sleep disorders and other conditions related to circadian rhythms.
Patent CA-2178961-A1 (CA)
Inventor: BRAILEAN JAMES CHARLES
IPC: G06T5/20
Filed: 1995-08-31
Abstract: The visibility of mosquito and blocking artifacts in a video compression system are effectively suppressed by calculating a post-processed pixel intensity (300). A post-processed pixel intensity is determined using a predetermined noise variance (304), a predetermined autocorrelation coefficient (306), and a local neighbourhood of pixels (308) that includes a plurality of previously post-processed pixel intensities and a plurality of original pixel intensities.  This eliminates the dependency on local signal and noise power estimates.
Patent CA-2181911-A1 (CA)
Title: Method and apparatus for activation of furnace slag base cement
Inventor: BROOKS FRED
IPC: C04B40/00
Filed: 1995-01-25
Abstract: The invention provides for metering the pumping rate of BFS/mud mixtures pumped to the cementing head on a rig for sealing off the formation from the casing. Since BFS mud mixtures require an activation agent, preferably sodium hydroxide is pumped into the flowline to the cementing head. Feedback from the BFS/mud slurry flowrate is fed to the activator injector pump drive system to regulate ale addition rate of the activating agent in response to varying conditions, such as mud flowrate. The injection rate target can also be adjusted to compensate for any changes in downhole temperature. The risk of fouling surface equipement and the casing internal diameter is minimized because the activation agent is added very close in time to when the BFS/mud mixture enters the cementing head. Even in situations where the anticipated downhole temperature is significantly lower than the surface temperature, a sufficient amount of activating agent is added for the downhole conditions without fear of fouling the casing internal or the surface pumping equipment.
Patent CA-2184928-A1 (CA)
Title: Lactic acid production, separation and/or recovery process
Inventor: BANIEL AVRAHAM M
IPC: C12P7/56
Filed: 1994-06-28
Abstract: A process for the production of lactic acid and for the separation and/or recovery of lactic acid from a lactate feed solution. A lactate feed solution (14) preferably obtained from a fermentation broth (10) is combined with an extractant and extracted (18) from the resulting organic phase (21).   Recovered carbonate or bicarbonate (29) from the aqueous phase (20) is preferably recycled to the fermentor (10) and regenerated extractant (17) is preferably recycled (24) for use in the extraction.