baber/WOPTO huggingface dataset:
Patent CA-2228683-A1 (CA)
Title: Superimposed grating wdm tunable lasers
Inventor: XU JINGMING
IPC: H01S5/0625
Filed: 1998-02-20
Abstract: A superimposed grating tunable WDM semiconductor laser is provided comprising a grating structure is a binary superimposed grating comprising a plurality of segments of equal dimension, s, each segment having one of two values of refractive index, whereby the grating structure is provided by a binary modulation of the refractive index modulation of segments s along the length of the grating.      Thus, for a superimposed grating structure for an optoelectronic device for providing a spectrum comprising j reflection peaks at wavelengths .lambda. j, the grating comprising a binary superimposed grating (BSG) having a sequence of a plurality of segments of equal size s, each segment of the sequence having a refractive index of one of two values wherein the effective waveguide index of the ith segment n~(.lambda.) is allowed to be changed by .DELTA.n~(m-1/2) with m=1 or m=0:       where i=1,2,3... is the segment number, for digital position i~s, n o(.lambda.) is a waveguide effective index, including both waveguide and material dispersion, and the function f(x) is a weighted sum of sinusoidal functions of desirable period A j f(x)=~(a j sin(2.pi.x/~ j)) and, periods ~ j relate to the spectral positions of reflection peaks .lambda.  j through the waveguide index n o(.lambda.) ~ j = .lambda. j/2n o(.lambda. j) Thus each grating is defined in a truly binary fashion as a digitized binary representation of elements providing a sum of component functions. The structure is readily fabricated by electron beam lithography at normal resolution. The ease of fabrication makes this structure desirable for front and back reflectors for tunable WDM lasers for applications such as tunable lasers for telecommunications applications and provides for an extended tuning range with excellent performance characteristics.
Patent CA-2235791-A1 (CA)
Title: Disjoncteur de generateur
Inventor: WILLIEME JEAN-MARC
IPC: H01H33/666
Filed: 1998-05-14
Abstract: Le disjoncteur de générateur comprenant un moyen de synchronisation assurant la séparation des contacts principaux (5,6) avant la séparation des contacts d'arc (15D,15G) est caractérise par un levier (171) qui est articulé par une de ses extrémités à une pièce de contact fixe (4), et qui est, d'une part, lié en déplacement avec le contact principal mobile (6), et d'autre part, lié en déplacement. avec le contact d'arc mobile (15D) par l'intermédiaire d'un ressort (19), et avec une rampe (21) présentant deux niveaux horizontaux (21A,21C) reliés entre eux par une partie intermédiaire inclinée (21B), la rampe servant de support de coulissement a un organe de déclenchement (23) qui bloque ou autorise le déplacement du contact d'arc mobile (15D). Cet agencement permet une synchronisation mécanique simple et unique des contacts mobiles.
Patent CA-2239557-A1 (CA)
Inventor: FANUELE FRANK J
IPC: B60P3/073
Filed: 1998-06-03
Abstract: A clamping system and device for securing a recreational vehicle or appliance to a support surface.  The device comprises a base plate mountable on the support surface.  An end effector is coupled to the base plate, the end effector being actuatable between a clamped and unclamped position.  A transfer mechanism is coupled to the end effector in operative relation to the base plate wherein the transfer mechanism actuates the end effector between the clamped and unclamped position for securing the recreational vehicle or appliance to the support surface.
Patent CA-2240164-A1 (CA)
Title: Gear with bearing arrangement
Inventor: SIVONEN MATTI
IPC: F16H57/021
Filed: 1997-01-09
Abstract: The invention concerns a gear, which comprises a shaft (12) and on it a gearwheel (13), which is in engagement with a gearwheel (17) mounted on a shaft (16). The shaft (16) comprises bearings (18 and 19) at both sides of the gearwheel (17) between the frame (11) and the shaft (16). The gear comprises a spring/springs (23a1, 23a2...), which is/are fitted to act with a force (F) upon the outer race (18') of the rolling members (20a1, 20a2...) of the bearing (18). Between the circumferential face (C1) of the outer race (18') and the gear (10) frame (11) or a connected part there is a glide fitting. In this connection the force effect is transferred further through the rolling members (20a1, 20a2...) of the bearing (18) to the inner race (18") of the bearing (18) and further to the bearing means (19) placed at the opposite side of the gearwheel (17). In this way the play in the bearings (18 and 19) placed at both sides of the gearwheel (17), between the rolling members (20a1, 20a2...) and the bearing (18, 19) races (18', 18"; 19', 19"), is eliminated.
Patent CA-2243222-A1 (CA)
Title: Medication containers
Inventor: JONES WILLIAM THOMAS
IPC: B65D50/04
Filed: 1998-07-15
Abstract: A medication container has a tubular container body with an upper open end, a cap detachably securable to the upper end of the container body by clockwise rotation relative thereto and removable from the container body by counter clockwise rotation relative thereto, and a cap liner within the cap and having a peripheral portion engageable with the upper end of the container body to close the upper end. The cap liner having an upwardly extending wall and the cap having a downwardly extending wall adjacent the upwardly extending wall of the cap liner.      The cap and the cap liner have inter-engaging mechanism provided on the downwardly extending wall of the cap and the upwardly extending wall of the cap liner to prevent rotational movement therebetween when the cap is rotated in one direction relative to the container body and permit relative movement therebetween when the cap is rotated in an opposite direction relative to the container body. The cap and the cap liner have indicia which indicated the next dosage time when the cap is rotated in the opposite direction.
Patent CA-2244620-A1 (CA)
Title: A method and apparatus for producing a roll of bathroom tissue or kitchen toweling with a pattern being repeated between each pair of transverse perforations
Inventor: MIKULSKY LAWRENCE D
IPC: B65H35/10
Filed: 1998-08-05
Abstract: A method and apparatus for producing a roll or log of bathroom tissue or kitchen toweling with a pattern being repeated between each pair of transverse perforations wherein an extensible web having a pattern thereon  repeated  at  equally  longitudinally  spaced position is advanced along a path toward a rewinder having  a  knife-equipped  perforator  and  a  cutoff mechanism.  A detector senses the position of each pattern  and  also  sensed  is  the  position  of  the perforation knife with the positions being reported to a controller.   The perforation knife is adjusted to insure  that  each  perforation  is between  pattern positions and the cutoff mechanism is adjusted to stay in time with the transverse lines of perforations to provide a selected count of patterns in each winding cycle.
Patent CA-2245109-A1 (CA)
Title: Shock aromatic vinyl polymer obtained from a rubber carrying a group that generates a stable free radical
Inventor: BOUTILLIER JEAN-MARC
IPC: C08F279/02
Filed: 1998-09-17
Abstract: Method for preparing a composition containing a vinyl-aromatic polymer matrix and rubber particles, comprises polymerization of at least one vinylaromatic monomer in presence of rubber using a free-radical initiator and generating stable free-radicles. Independent claims are also included for: (1) A method of preparing a rubber using a free-radical initiator, comprises thermally treating an elastomer, preferably homopolybutadiene, in the presence of stable free radicals, using a free radical initiator capable of removing a proton from the elastomer, a solvent, and in the absence of a vinylaromatic monomer, such that rubber has an average of 0.1-10 free radical generating groups per chain; (2) A rubber composition.
Patent CA-2245588-A1 (CA)
Inventor: LANDER RUSSEL J
IPC: A61P37/02
Filed: 1997-02-10
Abstract: Bacterial polysaccharides which are used to produced vaccines are isolated then precipitated with a long chain detergent. The precipitated polysaccharides are soluble in organic solvents and can be further derivatized and processed to form the vaccine.
Patent CA-2246945-A1 (CA)
Title: Apparatus to remove ice from the cables of electric power transmission lines
Inventor: GAGNON MAURICE
IPC: H02G7/16
Filed: 1998-09-11
Abstract: An apparatus to remove ice on electrical cables is disclosed herein. The apparatus comprises an impact actuator, a hammer head or rods, and fastening means to hang the apparatus to the electrical cable. The apparatus can be activated from remote and more then once before needing to be recharged.
Patent CA-2249078-A1 (CA)
Inventor: TROUNCE ERIK PAUL
IPC: H04L5/00
Filed: 1998-09-25
Abstract: A method and apparatus for combining data from first and second separate data transceivers onto a common data link. The method involves transceiving data at the first data transceiver using the common communications link, at regular intervals of time, and monitoring the common communications link to identify idle periods during which data associated with the first data transceiver is not present. The second data transceiver is synchronized with a corresponding transceiver in communication with the common communications link and communications are established between the second data transceiver and the corresponding transceiver, during the idle periods.
Patent CA-2249596-A1 (CA)
Title: Methods for enhancing functional recovery following central nervous system ischemia or trauma
Inventor: CHARETTE MARC F
IPC: A61K38/00
Filed: 1997-03-21
Abstract: The present invention provides methods and compositions for treatment of mammals afflicted with an ischemic or traumatic injury of the central nervous system. The present invention capitalizes in part upon the discovery that administration of a morphogen to such a mammal provides significant improvement in central nervous system function, even when administered after central nervous system tissue has been damaged. The methods involve the administration of dimeric proteins defined as morphogens, inducers of these morphogens, or agonists of the corresponding morphogen receptors, or implantation of cells stimulated by exposure to the morphogens. The proteins defined as morphogens comprise a structurally and functionally distinct family within the TGF-.beta. superfamily. Osteogenic protein-1 (OP-1) is considered to be an exemplary and preferred member of this morphogen family.
Patent CA-2251551-A1 (CA)
Title: Method for treating pathological conditions of tissues with non-coherent radiation and device therefor
Inventor: BAGRAEV NIKOLAI TAIMURAZOVICH
IPC: H01L33/00
Filed: 1996-04-11
Abstract: The invention relates to medicine and is designed to treat diseases accompanied by metabolic disorder, weakening of enzymatic processes, regenerative function disorder of affected tissues.   The method of treating pathological tissues with a noncoherent emission implies a periodic irradiation during 1-20 minutes with IR emission having the emission power density of 50-300 mW/cm2.   The irradiation is repeated in one or two days depending on the time needed to stop the pain syndrome in the process of healing of pathological tissues. The proposed method implies that the irradiation is directed at the skin site directly over the organ responsible for the course of a disease caused by metabolic, enzymatic and regeneration process disorders in tissues, said irradiation being performed by an emission in the 1-56 µm waveband in combination with linear polarization and time modulation. The method uses a package of different wavelengths within a preset range with a linear polarization and time modulation introduced depending on the nature of disease. The emission power density is also selected depending on the nature of the disease.     When an electric control signal is fed from additional power supplies of the control system (2), the suggested device provides such parameters of the emission that permit to obtain the maximum curing effect. The emission source is pre-calibrated to provide a required emission power density. A broad band semiconductor silicon light emitting diode (LED) based on a supershallow "p-n" transition with the waveband of noncoherent IR emission ranging from 1 to 56 µm as the emitter. The power supply (1) is connected along the plane (a) of "p+n" or "n+p" transition to provide electric current inside the doped "p+n"  or "n+p" region. The control system (2) is equipped with leads (c, d, e) for additional sources of electric field that are connected to the LED in such a way that the electric field is applied along the plane (a) of "p+n" transition providing a reverse and direct shift at the "p+n" transition. The control system (2) controls the spectrum range of the emitted light wavelengths, the degree of linear polarization and the frequency of time modulation. The control system (2) controls the LED by the electric field fed from the additional power supplies through leads (c, d, e). The value of the electric field is selected depending on the nature of the disease.
Patent CA-2253212-A1 (CA)
Inventor: ROTHENAICHER OTTO
IPC: C08J7/046
Filed: 1998-11-10
Abstract: The mechanical properties of addition-crosslinked silicone rubber are improved when the silicone rubber is brought into contact with a compound (A) having at least one aliphatically unsaturated multiple bond. In particular, the compression set is lowered.
Patent CA-2254033-A1 (CA)
Inventor: KLOSTER RICHARD J
IPC: B61D27/00
Filed: 1998-11-12
Abstract: A ventilated transportable freight container is disclosed. The container is ventilated by natural convection through at least one lower side vent comprising a lower plenum chamber for distributing air into the container and restricting entry of moisture in the form of rain, sleet or snow into the container and at least one upper top vent, including a plenum chamber. The upper top vent or vents may be formed in the sidewall of the enclosure or in the roof of the enclosure depending upon the structure of the container and the particular application. The use of one or more upper top vents enhances circulation of air by natural convection. The invention also incorporates sidewall and endwall spacers extending from the sidewalls and endwalls into the enclosure to provide passageways for the circulation of air to ventilate the enclosure and a path for condensation drainage. In one embodiment of the invention, the transportable freight container of present invention comprises a rail freight car. In another embodiment of the invention, at least one of the lower plenum chambers of the container extends lower than the floor of the enclosure to allow drainage from the enclosure. The container may also incorporate a layer of insulating material on the interior surface of the roof of the container to inhibit condensation of moisture. The freight container of the present invention is particularly adapted to the transport of baled material, such as pulp, which is typically shipped or transported in bales of approximately one cubic yard.
Patent CA-2254886-A1 (CA)
Inventor: LENHART KLAUS
IPC: A63C11/02
Filed: 1997-09-09
Abstract: The invention concerns a stick (10) such as a ski stick, a walking stick or the like, which has a handle (12) and a cane (14), the length of which can be altered, as well as an adjusting device (22) with which at least one gripping area of the stick handle (12) can be adjusted in a bent position relative to the cane (14). The purpose of the invention is to obtain a stick which can be folded into a compact unit as small as possible. To this end the stick cane (14) has two sections (24, 26) joined together by the adjusting device (22) and the adjusting device (22) is accommodated outside the cane of the stick (14).
Patent CA-2259641-A1 (CA)
Title: Microphone noise rejection system
Inventor: LINDER FRANK X
IPC: H04M1/00
Filed: 1997-07-01
Abstract: An apparatus (200) and method removes repetitive background noise from an information signal originating from a first source, such as a microphone (202). The noise originates from a second source, such as a siren (238), and is picked up by the first source along with the information. The noise signal has a characteristic frequency and associated period. The information signal is delayed for a selected period of time based on the characteristic frequency of the repetitive noise signal and forms a phase-shifted or delayed information signal. The delayed information signal is processed with a substantially non-delayed information signal and forms a processed information signal in which the information component is substantial and the noise component is negligible.
Patent CA-2259647-A1 (CA)
Title: Improvements in or relating to a method and apparatus for determining symbol timing in a wireless communications system, also using a reusable control channel, and reducing power
Inventor: KLEIN JAY
IPC: H04J3/00
Filed: 1997-06-30
Abstract: A wireless communication system in which a base station communicates with plural mobile stations using a control channel and plural voice (or data) channels, and uses the control channel as a voice channel whenever the other voice channels are in use and a request is received from a mobile station for another voice channel. Also a method and apparatus for reducing power consumed by mobile, wireless units, such as personal communications systems or wireless PBX telephones, by reducing the frequency with which various circuits within the units are fully energized. During on-going voice communications between a base station and a wireless unit, the wireless unit reduces the frequency of its references to a control channel and may eliminate such references altogether. Moreover a method and apparatus for determining the timing of symbols within a multiple symbol telecommunicated message by evaluating signal characteristics in both the preamble and data portions of a message. Samples of a received signal are taken at a periodic basis and a predetermined characteristic of the signal is evaluated for each sample.
Patent CA-2260011-A1 (CA)
Title: Method for redirecting traffic on a communications network for conservation of network resources
Inventor: BRADLEY JAMES FREDERICK
IPC: H04M7/12
Filed: 1997-06-26
Abstract: A method of operating a switched communications network redirects certain types of messages away from the switch to free up switch resources for other messages, thereby decreasing the size of switch needed or delaying necessary switch size upgrading. Messages are redirected by intelligent concentrators that can connect certain types of messages to their destinations without routing them through the switch. For example, messages between an origination and a destination connected to the same concentrator need not be sent through the switch. Similarly, messages between originations and certain high-volume, long-duration destinations such as data service gateways can be connected directly without passing through the switch. The intelligent concentrators communicate with the switch on a control channel so that the switch remains aware of the status of each origination or destination (e.g., so that it knows not to attempt to route messages to an origination or destination that is in use).
Patent CA-2260608-A1 (CA)
Title: Multiple recent event age tracking method and apparatus
Inventor: NORTHCOTT PHILIP LYON
IPC: H04L12/70
Filed: 1999-01-29
Abstract: A method of detecting an alarm indication signal in a bitstream when the detection criterion is that a specified event occurs less than a predetermined number of times in a sliding window of a specified number of time periods comprising: tracking the age of the most recent predetermined number of the specified events, comparing the age to the specified number of time periods, and generating an alarm if the age of any specified event is greater than or equal to the specified number of time periods.
Patent CA-2260972-A1 (CA)
Title: Mower transport trailer
Inventor: PEDERSEN PEDER
IPC: A01D75/00
Filed: 1998-06-03
Abstract: A transport trailer for an agricultural mowing machine (11) comprises a trailer frame (31), a set of transport wheels (33) mounted on the frame (31) to support the trailer frame and also a mowing machine when loaded thereon, a pair of adjustable loading ramps (34) spaced apart along the length of the trailer frame (31) and each corresponding to a respective one of the ground wheels of the mowing machine and being adjustable between ground engaging positions which allow loading of the mowing machine and raised positions suitable for transport of the mowing machine, and bearers (35), connected to the ramps (34) and arranged to move the ramps to the raised transport position after loading of the mowing machine by being engaged by parts of the mowing machine as the latter is adjusted to its lowered position.
Patent CA-2265460-A1 (CA)
Inventor: SAFER BRIAN
IPC: C12N15/864
Filed: 1997-09-11
Abstract: The present invention provides an adeno-associated virus 4 (AAV4) virus and vectors and particles derived therefrom. In addition, the present invention provides methods of delivering a nucleic acid to a cell using the AAV4 vectors and particles.
Patent CA-2267032-A1 (CA)
Title: Boil-in-bag sachet
Inventor: SPOREN FRIEDA JACQUELINE HELEN
IPC: B65D81/34
Filed: 1999-03-26
Abstract: The invention provides a boil-in-bag sachet (1) comprising top (2) and bottom transverse seals and wherein the bottom transverse seal extends obliquely downwardly from at least one edge (8) of the sachet (1). Preferably, the bottom transverse seal extends obliquely downwardly from both edges of the sachet (1) to define a funnel-like or bag-like bottom to the sachet. Preferably, the bottom seal extends diagonally across a corner of the sachet to define a corner-tab (6) for grasping the sachet.
Patent CA-2267035-A1 (CA)
Inventor: SHIDELER VICTOR JOSEPH
IPC: H02P25/04
Filed: 1999-03-26
Abstract: An apparatus for controlling the speed of an induction motor includes a first winding and a second winding. The first winding and second winding are adapted to be coupled to an AC source for supplying an AC input signal. A first switching device is coupled to the first winding and a second switching device is coupled to the second winding. Each of the switching devices is operative in a low impedance state enabling current to flow through the associated winding of each switching device and a high impedance state preventing significant current flow through the associated winding of each switching device. A controller switches each of the switching devices from the high impedance state to the low impedance state in a sequence for controlling the current in the windings, which induces a phase shift between the AC voltages across the windings.
Patent CA-2269265-A1 (CA)
Title: Control system for internal combustion engines
Inventor: BURK RONNIE FRANKLIN
IPC: F02D31/00
Filed: 1999-04-29
Abstract: A control system for internal combustion engines of an agricultural tractor include a memory unit in which is stored engine performance maps. The control system includes a vehicle speed sensor and transmits control signals to an electronically controlled fuel injection system to control the fuel injection quantity as a function of sensed speed, target value inputs and as a function of the engine performance maps. The control system, in response to sensed vehicle speed, limits the maximum engine output as a function of the vehicle speed. In particular, at lower vehicle speeds the engine output is limited to a level which is lower than the rated engine output.