baber/WOPTO huggingface dataset:
Patent CA-2123205-A1 (CA)
Title: Visible light surface emitting semiconductor laser
Inventor: BRYAN ROBERT P
IPC: H01S5/00
Filed: 1992-11-06
Abstract: A vertical-cavity surface-emitting laser is disclosed comprising a laser cavity sandwiched between two distributed Bragg reflectors. The laser cavity comprises a pair of spacer layers (20, 40) surrounding one or more active, optically emitting quantum-well layers (30) having a bandgap in the visible which serve as the active optically emitting material of the device. The thickness of the laser cavity is m .lambda./2neff where m is an integer, .lambda. is the free-space wavelength of the laser radiation and neff is the effective index of refraction of the cavity. Electrical pumping of the laser is achieved by heavily doping the bottom mirror (10) and substrate (60) to one conductivity-type and heavily doping regions of the upper mirror (50) with the opposite conductivity type to form a diode structure and applying a suitable voltage to the diode structure. Specific embodiments of the invention for generating red, green, and blue radiation are described.
Patent CA-2130613-A1 (CA)
Inventor: TAPPER ALEXANDER
IPC: C01B33/32
Filed: 1994-08-22
Abstract: The present invention relates to a process for preparing a compacted, granular sodium silicate which withstands abrasive effects, for example mechanical conveying without damage having an SiO2/Na2O molar ratio of 1.7 : 1 to 4.1 : 1, by first intimately mixing the sodium silicate having a median particle diameter of < 500 µm with a material increasing its hardness before converting it into pressed granules having particle sizes of 0.1 to 5 mm by compacting, comminution and screening.
Patent CA-2130827-A1 (CA)
Inventor: RIGGS JOHN H
IPC: A61M16/00
Filed: 1993-03-03
Abstract: A continuous flow jet nebulizing device (48) and method for delivering respiratory powdered medication to the lungs of a patient (30). The nebulizer device of the present invention comprises a nebulizer housing having a lower, generally conical-shaped lower housing portion (50) defining an interior volume enclosed by the housing, and a nozzle element (66) at the upper portion (20) of the housing, coaxially aligned with the cone-shaped lower portion. The nozzle element extends through the housing, with an upper inlet portion coupleable to a suitable source (44) of compressed carrier gas, and a lower portion (68) of the nozzle ele-ment forming a discharge structure for directing of gas downwardly to the lower extremity of the conical-shaped lower portion of the nebulizer housing. At the upper portion of the nebulizer housing is an exit port (21) for discharge of solids-containing carrier gas from the nebulizer housing to an exterior treatment locus.
Patent CA-2132435-A1 (CA)
Title: Power regulator of discharge lamp and variable color illumination apparatus using the regulator
Inventor: NOBUYUKI YAMADA
IPC: H05B41/288
Filed: 1993-03-24
Abstract: ABSTRACT OF THE DISCLOSURE    A current supplied to a discharge lamp  (100)  is an A.C. current having a predetermined frequency from an inverter circuit  (70),  and  its  power  control  is  carried  out  by changing the current setting (setting signal)  of a chopper circuit  (40)  constituting a constant current circuit.   In other words,  when a value is set by an output luminance regulator  (120),  this set current value is inputted to a chopper control circuit (130).  The chopper control circuit (130)  checks the current  detected by a  current  detector (110)  and  outputs  a  current  control  signal  to  a  gate terminal (41) of the chopper circuit (40) so that the output current may coincide with the set current value.  Accordingly, the power supplied from the inverter circuit  (70)  to the discharge lamp  (100)  is controlled by the chopper circuit (40).
Patent CA-2134875-A1 (CA)
Title: Method for compensation of dark current of ccd-sensor in dental x-raying
Inventor: NELVIG PER
IPC: H04N5/361
Filed: 1993-05-07
Abstract: The present method and device according to the invention is by a compensation signal to guarantee that picture element within preferably faintly exposed image areas in dental x-raying will be located within a desired signal level interval, which on a video monitor (25) is corresponding to the light intensity which should have been obtained with a dental x-ray film, to thereby on the video monitor (25) facilitate improved dynamics and thus obtain maximum imaging sensitivity for gray level variations, e.g., enamel and dentine in dental x-raying. Additionally is achieved that the strong dependence of the image sensor to, e.g., ambient temperature regarding its dark current is compensated by a signal processing device (20, 23) already upon generation of raw data for the image to thus utilize maximum possible image quality and resolution prior to subsequent processing by a processor (22) by means of a non-linear digitalization (21).
Patent CA-2135272-A1 (CA)
Title: Method for producing an improved stereoscopic picture and stereoscopic picture obtained according to this method
Inventor: TAYLOR ROY Y
IPC: G02B30/27
Filed: 1994-11-07
Abstract: An improved stereoscopic picture, comprising: (a) a lenticular faceplate material having a predetermined number of lenticules, the lenticules having a given pitch and a given subtended primary angle; and (b) a photographic receiver mounted on the lenticular faceplate material and on which are recorded sets of right and left perspective views of a first pair of stereoscopic pictures, the lenticular faceplate material and the photographic receiver being aligned so that each set on the photographic receiver corresponds to an associated given lenticule of the lenticular faceplate material, the width of the sets of right and left perspective views being less than the pitch of the lenticules.
Patent CA-2138908-A1 (CA)
Inventor: CLARK PETER P
IPC: G03B13/36
Filed: 1994-12-22
Abstract: A plurality of fixed focus exposure lenses are mounted in a turret for manual selection of a desired focus. Each exposure lens in the turret is combined with a pair of ranging lenses for movement therewith which direct light beams to converge at the sharpest subject focus distance of the exposure lens.
Patent CA-2139502-A1 (CA)
Title: Agglomerated activated carbon air filter
Inventor: TANG YUAN-MING
IPC: B01D53/34
Filed: 1993-07-01
Abstract: A self-supporting filter of adsorbent particles is provided by agglomerating the adsorbent particles with a thermoplastic binder and forming a self-supporting filter with a low pressure drop and high efficiency suitable for use as an automotive cabin filter.
Patent CA-2139710-A1 (CA)
Title: Apparatus for dispensing a combined stream of at least two individual substances for consumption, their consistency ranging from liquid to soft-plastic
Inventor: BELLMANN ANDREAS
IPC: B67D1/00
Filed: 1995-01-06
Abstract: According to an illustrative example this invention proposes an apparatus  for dispensing a combined stream of at  least  two individual substances for consumption, their consistency ranging from liquid to soft-plastic. This apparatus selectively allows to dispense a combined stream consisting of the different individual substances or to dispense the individual substances separately. The apparatus comprises a corresponding number of individual substance storage chambers (191,193) and a corresponding number of  individual  substance  pumps  (105,107),  The  pumps  have respective individual substance suction channels  (77),  dipped into respective individual substance storage chambers (191,193), and further have individual substance dispensing channels (83). A combined-stream dispensing head  (131)  is connected to the individual substance dispensing channels (83).
Patent CA-2139727-A1 (CA)
Title: Electrically heated nozzle for injection-molding machine
Inventor: SCHWARZKOPF EUGEN
IPC: B29C45/74
Filed: 1995-01-06
Abstract: A nozzle for an injection-molding machine has an elon-gated body centered on an axis and formed with an axially and longitudinally throughgoing passage, a threaded rear end, an outer wall, and a front end formed with a step having an axially forwardly directed annular face and a radially outwardly directed annular side surface set in from the outer wall.  A removable nozzle element is set in the passage at the front end and an electrical heating element is provided on the outer wall.  A protective sleeve coaxial with the body surrounds and encloses the body and heating element and has a front end at the body front end.  An end ring set on the step has an inner periphery juxtaposed with the annular surface and an outer periphery juxta-posed with the sleeve front end.  Respective inner and outer annular weld joints between the inner periphery and the annular surface and between the outer periphery and the sleeve front end secure the end ring in place.
Patent CA-2141829-A1 (CA)
Inventor: LINDNER BERNARD J
IPC: H02K7/102
Filed: 1995-02-02
Abstract: A brake assembly (10) for selectively starting and stopping rotation of a shaft (12) journaled in a frame (14) of a motor comprises an end plate (16) mounted to the motor frame, the end plate (16) being formed with mounting slots (40) formed axially therein.  Friction discs (26, 26a) are secured to the shaft (12) for rotation therewith about the longitudinal axis of the shaft (12) and pressure plates (36, 36a, 36b) are non-rotatably mounted in the mounting slots (40) of the end plates (16) and axially movable toward and away from the friction discs (26, 26a).  Separator springs (124) are slidably mounted around a peripheral portion of the pressure plates (36, 36a) mounted in the mounting slots (40) for urging the pressure plates (36, 36a) away from the friction discs (26, 26a) to minimize brake drag caused by contact of the pressure plates (36, 36a, 36b) and the friction discs (26, 26a) during rotation of the shaft (12), and for suppressing noise and wear caused by contact of the pressure plates (36, 36a) relative to the end plate (16) during brake operation.
Patent CA-2143359-A1 (CA)
Title: Method for improving erasability of erasable marking compositions
Inventor: VOGEL MARTIN
IPC: C09D11/16
Filed: 1995-02-24
Abstract: A method is disclosed for improving the erasability of erasable marking compositions, while maintaining the opacity of the coating and without producing burnishing, by incorporating into the compositions voided latex particles having a shell polymerized from either: (1) at least about 25% by weight, based on the weight of the shell, of a crosslinking comonomer; (2) at least about 5% by weight, based on the weight of the shell, of a crosslinking comonomer, when at least about 50% by weight of methyl methacrylate is used as a comonomer in the shell.      An improved liquid marking composition is also disclosed.
Patent CA-2146778-A1 (CA)
Title: Enantiomeric resolution
Inventor: MANIMARAN THANIKAVELU
IPC: C07C51/487
Filed: 1993-10-05
Abstract: A process for obtaining a substantially pure enantiomer of an aryl-substituted aliphatic carboxylic acid is described. The process utilizes first an enantiomerically enriched mixture of the aryl-substituted aliphatic carboxylic acid obtained from kinetic resolution, diastereomeric crystallization or asymmetric synthesis processes. This enriched mixture is reacted with a base produ-cing a salt that has the following properties: (1) has at least one eutectic point; (2) a composition that is not at the eutectic point; and (3) an eutetic composition that is closer to the racemic composition than is the eutectic composition of said aryl-substituted carboxylic acid. Substantially pure, enantiomeric salt is separated, leaving a mother liquor comprising the solvent and aryl-substi-tuted aliphatic carboxylic acid enriched in the other enantiomer.
Patent CA-2146892-A1 (CA)
Inventor: BAKER ALBERT D
IPC: H04Q11/04
Filed: 1995-04-12
Abstract: Full channel service is obtained over a modified ISDN BRI interface by emulatingat least one central office (CO) station terminal which provides access to a voice channel over a single digital subscriber line (DSL) for user station terminals whether or not they are ISDN BRI compatible. To this end, an interface is provided for the DSL that emulates an ISDN BRI CO station terminal and acts like a facility to user station terminals. More specifically, a plurality of CO station terminals are emulated on a single multi-point passive bus terminating the single DSL. Each of the emulated CO station terminals presents to the CO switching of fice the appearance of being a CO station terminal. The emulated CO station terminals are configured such that CO features are accessible. Information from the emulated CO station terminals is mapped into existing system structures where such structures are available and compatible with the information from the emulated terminal.
Patent CA-2148726-A1 (CA)
Title: Arrow lubricant system
Inventor: COFFEY B HOWARD
IPC: F16N7/00
Filed: 1995-05-05
Abstract: A portable lubricant system for use in connection with sport bow shooting where arrows are shot into simulated figures and where it is necessary  to quickly and efficiently remove the arrows from the figure without damage to the arrow.  A casing is provided and holds an absorbent medium which receives the  liquid lubricant to prevent loss of the liquid from the casing.  A septum type lid allows insertion and removal of the arrow into the medium and removal of the lubricated  arrow for  use and limiting devices can be provided to adjust the length of extent of insertion of the arrow into the enclosure.
Patent CA-2150516-A1 (CA)
Title: Apparatus for powering the hydraulic system of an automobile carrier
Inventor: BEVILACQUA MICHAEL S
IPC: B60P3/08
Filed: 1995-05-30
Abstract: A source of power for the hydraulic system of an automobile carrier.  The source of power comprises an auxiliary engine which is preferably supplied with fuel from the main engine fuel tank whereby the auxiliary engine is free of a fuel tank so that it may add less weight to the carrier.  This also eliminates the necessity of replenishing a separate fuel supply from time to time.  In order to reduce maintenance costs as well as allow use of the main engine fuel tank on carriers having a diesel main engine, the auxiliary engine is preferably diesel. In order that the auxiliary engine may be free of a radiator so that it may add even less weight to the carrier, its cooling system is preferably connected to the main engine cooling system in such a way that the main engine radiator may be effectively used for cooling auxiliary coolant.  This also allows one engine to keep the other non-operating engine warm.
Patent CA-2157306-A1 (CA)
Inventor: FRECHETTE YOLAIN
IPC: E05B65/00
Filed: 1995-08-31
Abstract: An anti-theft locking device for use with a threaded member such as the wheels of a vehicle wherein a nut is engageable with a threaded member, the device having in a first embodiment a cylindrical element which is operatively associated with the nut and which has a plurality of annular grooves formed on an exterior surface thereof with a keyway communicating between the grooves and an end of the cylindrical member. A cover member overlies a wrench engaging portion of the nut when the cover member is in a locked position and a plurality of ring members have a lug which is engageable within the grooves and a keyway in a combination lock arrangement such that when the lugs are aligned with the keyway, the cover member can be moved axially with respect to the cylindrical member to thereby gain access to the wrench engaging portion of the nut. In a variation, there is provided an outer cylindrical cover member which fits on the stud providing a space between the cover member and a nut, a subassembly of an inner cylindrical member and ring members in a combination lock arrangement permitting or denying access to the nut to prevent removal thereof.
Patent CA-2160875-A1 (CA)
Title: Osteosynthesis clip and ancillary material for the installation thereof
Inventor: SAVORNIN CLAUDE
IPC: A61B17/064
Filed: 1994-04-18
Abstract: An osteosynthesis clip consisting of a central member and two side members. The central member includes two portions with an outwardly-open obtuse angle therebetween, and the distal ends of the side members include a sloping portion defined by an inward-facing surface. Ancillary equipment for fitting said clip is also disclosed. Said clip is characterised in that the side members (2, 3) converge at an angle of less than 20 DEG  and their outer surfaces have jagged portions (4) which prevent withdrawal. Application to fractures.
Patent CA-2161111-A1 (CA)
Title: Detection of biological material
Inventor: FOOTE NICHOLAS PETER MARTIN
IPC: C12Q1/28
Filed: 1994-04-14
Abstract: A method for detecting the presence of any of the materials C1, C2, enzyme E1 (having the substrates C1 and S1) and enzyme E2 (having the substrates C2 and S2) that undergo the following reactions (I) and (II). This method comprises adding the other materials sufficient for the reactions to proceed, and observing the loss of S1 or S2 or the formation of P. The formation of P increases exponentially, and that can be used to give a colour reaction quickly and simply, with a suitable P-linked reaction, in the presence of microorganisms (C1 being ATP).
Patent CA-2162371-A1 (CA)
Title: Readily installed universal sewage grinder pump
Inventor: BAUGHMAN THOMAS R
IPC: F04D15/02
Filed: 1994-05-09
Abstract: An integral, readily installed, universal pump assembly (18) has an integral liquid-tight outer housing (19) for supporting within a single liquid-tight containment vessel an electric motor driven pump (21), and discharging liquid from a discharge outlet (24) of the pump (21). The assembly (18) includes at least one normal high and low liquid level sensing control pneumatic pressure operated electric switch (32) supported within the housing (19) for deriving on-off switching control signals for controlling normal on-off operation of the pump (21). At least one liquid level sensing diving bell (30) is supported on the housing (19) and has at least one lower open end exposed to the liquid in the collection tank (11) for deriving varying pressure pneumatic liquid level indicating signals for application to the pressure operated switch (32) for deriving the on-off control signal.
Patent CA-2162909-A1 (CA)
Title: Syringe for infusion
Inventor: REYNOLDS DAVID L
IPC: A61M5/142
Filed: 1994-05-16
Abstract: A syringe is modified to permit gradual administration of its contents with reduced problems due to seizing or stiction of its piston by dividing its piston (6) axially into two parts, a front detached part (6A) and a rear part (6B) which is the only part having provision for attachment to a syringe actuator. The rear part has a passage (20) through which fluid can be gradually introduced from an actuator (38) into a chamber (28) between the parts so as to force the front part forward while the rear part is restrained against rearward movement. The passage may be initially closed by a septum (22) which is penetrated by a cannula (42) on the actuator. If the syringe actuator is a plunger, the syringe can be used conventionally.
Patent CA-2163617-A1 (CA)
Inventor: HAMILTON PETER WORTHINGON
IPC: A61J1/03
Filed: 1994-05-17
Abstract: The dual chamber - child-resistant blister package (22) is provided. The blisters of the package include a storage chamber (34) and a discharge chamber (36). In addition, the blister includes restraint means (38) for preventing the medicament (24) from moving from the storage chamber (34) to the discharge chamber (36) until a predetermined force is applied to the blister package (22). The medicament (24) may not be dispensed directly from the storage chamber (34), since a nonrupturable layer (30) is located adjacent the storage chamber (34) of the blister (22). The nonrupturable layer (30) includes an opening (44), or a mechanism such as a score line for forming and opening through which the medicament (24) can pass adjacent the discharge chamber (36). A rupturable layer (32) is also provided to seal the medicament (24) within the blister (22). Typically, the rupturable layer (32) is located adjacent the nonrupturable layer (30) to seal the opening in the nonrupturable layer (30). The blister package (22) may also include indicia associated with the blisters to help insure compliance with complex therapeutic regimens. The blister package may also include fold lines to help reduce the overall size of the blister package; thereby making it easier to transport.
Patent CA-2165448-A1 (CA)
Title: Coupling device useful for joining or capping plastic pipe
Inventor: ENAYATI SIAVOOSH K
IPC: F16L55/115
Filed: 1994-06-16
Abstract: A coupling device for joining ends of pipes together or capping an end of a single pipe. The device includes a metal insert (6) having serrations (10) for engaging an inner surface of a plastic pipe (7), a deformable coupling member (2) which overlies the pipe (7) and a metal ring (11) of smaller inner diameter than the outer diameter of the coupling member (2) for compressing the coupling member (2) and plastic pipe (7) against the metal insert (6). A space forming feature (12) reduces the insertion force required to slide the metal ring (11) over the coupling member (2). For instance, the metal insert can include a circumferentially extending groove (18) on an outer surface to accommodate flow of the plastic pipe (7) as it is deformed by the metal ring (11). Alternatively, the coupling member can include a recess (16), groove (20) or projection (22), the inner surface of the coupling member can be tapered, the end of the plastic pipe can be tapered or a compressible member (25) or a ball bearing (24) can be inserted between the end of the pipe and the coupling member to accomplish the same result.
Patent CA-2167038-A1 (CA)
Title: Low profile hardwood flooring strip and method of manufacture
Inventor: BOLYARD DARL J
IPC: B27M3/04
Filed: 1996-01-11
Abstract: A method of  producing  a  hardwood  flooring product, including the steps of processing a strip of raw wood into a blank having a predetermined thickness and width,  and top and bottom surfaces defining parallel planes relative to each other,  and splitting the blank along the width of the blank from one side to the other to form two low profile flooring strips having the same width as the blank and a thickness less than one-half the thickness of the blank.  The splitting step includes the steps of providing first and second circular saw blades mounted on spaced-apart vertical axes for rotation in a single plane intermediate and parallel to the planes of the top and bottom surfaces of the blank and positioning the blank on conveying means upstream from the saw blades with the plane of rotation of the saw blades intermediate and parallel to the planes of the top and bottom surfaces of the blank for movement of the blank from an upstream position to a downstream position relative to the saw blades.  The blank is moved downstream into the plane of rotation of the saw blades during rotation of the saw blades thereby horizontally splitting the blank to   form  first  and   second   low-profile   flooring   strips.         Interlocking members, such as molded, mating tongue and groove members, are molded into first and second longitudinally-extending side edges of the flooring strips for securing together the flooring strips when placed side-to-side to form a floor.