baber/WOPTO huggingface dataset:
Patent CA-2082852-C (CA)
Title: Improved inkjet printhead
Inventor: KEEFE BRIAN J
IPC: B41J2/16
Filed: 1992-11-13
Granted: 2001-03-20
Abstract: In a print cartridge according to the preferred embodiment of the invention, a polymer tape having orifices formed therein and containing conductive traces has a substrate containing heater elements affixed to a back surface of the tape. Each of the heater elements in the substrate is located substantially behind each of the orifices. The edges of the nozzle member overlap the edges of the substrate, and the back surface of the tape is sealed with respect to an ink reservoir so that a seal substantially circumscribes the substrate. This allows ink to flow around the side edges of the substrate and into vaporization chambers associated with each orifice.      The conductive traces on the tape are attached to electrodes along the shorter side edges of the substrate so as not to interfere with the edge-feed of ink along the longer edges of the substrate. A demultiplexer on the substrate requires relatively few electrodes to be formed on the substrate for supplying energization signals to the numerous heater elements formed on the substrate.
Patent CA-2082960-C (CA)
Title: An apparatus for preparing a concentrate of coagulation factors, such as fibrinogen, from a blood sample
Inventor: WEIS-FOGH ULLA
IPC: A61K35/16
Filed: 1991-05-14
Granted: 2002-07-02
Abstract: An apparatus for preparing a concentrate of coagulation factors, such as fibrinogen, from a blood sample, comprises a first chamber (14) for collection and separation of said blood sample so as to separate a plasma fraction, and a second chamber (15) for collection of said plasma fraction through a tubing member (22, 30) and a valve (24) and for precipitation of said concentrate. The ap-paratus comprises furthermore a removable syringe (36) for receiving the concentrate from the second chamber (15) through a tubing member (32). The first and the second chamber (14, 15) are partially defined by the same integrally formed solid con-tainer wall (2) and comprise a common partition.    The first chamber (14) is further defined by a pis-ton (4) displaceable both in connection with the blood sample collection and the transfer of said plasma fraction to the second chamber (15) and in connection with returning said plasma fraction to the first chamber (14) upon the precipitation of the concentrate.
Patent CA-2087341-C (CA)
Inventor: BAO QI-BIN
IPC: A61K9/22
Filed: 1991-06-19
Granted: 2000-08-08
Abstract: Un matériau pouvant être implanté afin de stimuler la croissance osseuse, possède une structure microporeuse ayant une grandeur de pore moyenne égale à au moins 30 Å. Le biomatériau poreux peut retenir des macromolécules ayant un poids moléculaire compris entre 15000 au minimum et 500000 au maximum.
Patent CA-2088932-C (CA)
Title: Rod guide assembly for rotary applications
Inventor: NEWTON HILLE
IPC: E21B19/24
Filed: 1993-02-05
Granted: 1998-05-12
Abstract: A rod guide assembly for rotary applications has a stationary housing and a rotating housing.  The stationary housing has an exterior, an interior, a first end and a second end. A primary stationary annular bushing is positioned in the interior at the first end of the stationary housing. The primary bushing has an interior bore.  A bearing is provided having an outer race, and an inner race with an inner circumference.  The outer race of the bearing is non-rotatably fixed to the stationary housing.  A secondary annular rod guide is positioned in the interior at the second end of the stationary housing.  Annular packing is disposed within the interior of the stationary housing to provide a fluid seal. The cylindrical rotating housing has an exterior, an interior, a first end and a second end.  The exterior has a neck portion adjacent the second end.  The neck is adapted to engage the inner circumference of the inner race of the bearing disposed at the first end of the stationary housing.  The inner race of the bearing rotates with the rotating housing.  Annular packing is disposed within the interior of the rotating housing to provide a fluid seal.
Patent CA-2089444-C (CA)
Inventor: SCHAEF IRVING W
IPC: H01R33/00
Filed: 1993-02-12
Granted: 2004-04-13
Abstract: The present invention relates to a retaining structure for removably connecting and maintaining electrical engagement between a light bulb and more particularly, a lamp base portion thereof, with an electrically wired socket. The squeezing of the socket wall changes the dimensions and shape of these walls that allows the releasing of mated protrusions on opposite parts to permit the removal of the lamp base from the socket.
Patent CA-2089526-C (CA)
Title: Baseball pitcher training device
Inventor: HINSPERGER PETER
IPC: A63B63/00
Filed: 1993-02-15
Granted: 1998-11-24
Abstract: A baseball pitching practice device which provides a flexible rectangular sheet within which is disposed an aperture.  The aperture provides a conical open ended chute to receive the ball or other projectile and dispenses the same at least at the bottom edge thereof.  This allows the user to continue play without having to recover the projectile from within a closed sack.
Patent CA-2090180-C (CA)
Title: Method for the manufacture of branched polysiloxane
Inventor: OGAWA TAKUYA
IPC: C08G77/04
Filed: 1993-02-23
Granted: 1997-12-23
Abstract: The present invention is a novel method for the manufacture of branched polysiloxanes having the polysiloxane SiO4/2 unit as the branch center precisely bonded to one end of a diorganopolysiloxane.  The present invention concerns a method for the manufacture of a branched polysiloxane characterized by reacting a linear polysiloxane with a reactive polysiloxane having halogen substitution.
Patent CA-2095467-C (CA)
Title: Poultry washing apparatus and method
Inventor: LEECH JEFFREY L
IPC: A23L13/50
Filed: 1993-06-24
Granted: 2003-11-25
Abstract: An apparatus used for reducing the amount of pathogenic bacteria associated with a bird or other edible animal, and preferably chickens, comprising: (a) a unit having an interior portion having side and bottom walls, an exterior portion having side and bottom walls and end walls connecting said interior portion to said exterior portion wherein the area of said interior portion provides a space which completely surrounds one or more of the birds or animals being treated; (b) one or more deluge nozzles mounted within said interior portion of said unit and connected to a source of a bacteria reducing chemical solution to enable the bacteria reducing chemical solution to be applied to the entire interior of the body cavity of the bird or animal being treated; (c) one or more spray nozzles mounted within said interior portion of said unit and connected to a source of a bacteria reducing chemical solution to enable the bacteria reducing chemical solution to be applied to the entire external surfaces of the bird or animal being treated; (d) one or more lines for connecting said one or more deluge nozzles and said one or more spray nozzles to the source of the bacteria reducing chemical solution; and (e) one or more connectors for connecting the exterior portion or end walls of said unit to an existing overhead conveyor located within the facility where the bird or animal is being treated; and the process for using the apparatus are provided.
Patent CA-2100732-C (CA)
Title: Shaped organopolysiloxanes containing sulfonate groups, a process for their production and their use
Inventor: PANSTER PETER
IPC: B01J39/19
Filed: 1993-07-16
Granted: 1999-11-09
Abstract: The invention elates to shaped organopolysiloxanes containing sulfonate groups and consisting of units (0 3/2Si-R1-S0 3)x Mx+   in which R1 is an alkylene group, x is a number of 1 to 4 depending on M and M is hydrogen or a mono- to tetra-valent, optionally complex metal ion and the valencies of the silicon oxygen atoms are saturated by silicon. atoms of other groups (I) or by crosslinking silicon and aluminium compounds, the ratio of the silicon atoms in (I) to the silicon and aluminium atoms of the cross-linker being from 1:4 to 1:20. The organopolysiloxanes containing sulfonate groups are present in the form of spherical particles with a diameter of 0.01 to 3.0 mm, a specific surface of 0.1 to 1200 M2/g, a specific pore volume of 0.01 to 6.0 ml/g and an apparent density of 50 to 1000 g/l. The invention also relates to processes for the production of the shaped sulfonated organopoly-siloxanes and to their use as a solid acid catalyst.
Patent CA-2107235-C (CA)
Inventor: KO YOUNG KWAN
IPC: C07D251/46
Filed: 1992-03-09
Granted: 1997-11-04
Abstract: Nouveaux dérivés de benzènesulfonylurée, herbicides; ils correspondent à la formule générale (I), où RI représente H, un alkyle C1-C3, un haloalkyle C1-C3, un halogène, CN, NO2, un alcoxy C1-C3, un haloalcoxy C1-C3, SO2NRIRII, un alkylthio C1-C3, un alkylsulfinyle C1-C3, un alkylsulfonyle C1-C3, SCH2F, NH2, NHCH3, N(Me)2, un alkyle C1-C2 avec substitution par un alcoxy C1-C2, un haloalcoxy C1-C2, SH, SCH3, CN ou OH ou CO2RIII; ensuite RI représente H, un alkyle C1-C4, un cyanoalkyle C2-C3, un méthoxy ou un éthoxy; RII représente H, un alkyle C1-C4, un alcényle C3-C4, ou lorsqu'ils sont pris ensemble liant RI et RII, -(CH2)3-, -(CH2)4-, -(CH2)5- ou CH2CH2OCH2CH2- peuvent être formés; RIII représente un alkyle C1-C4, un alcényle C3-C4, un alcynyle C3-C4, un alkyle C1-C4 avec substitution par 1 ~ 3 halogènes ou groupes cyano, un cycloalkyle C5-C6, un cycloalkylalkyle C3-C7 ou un alcoxyalkyle C2-C4 ; R2 est un alkyle C1-C6 avec substitution par 1 ~ 3 halogènes; R3 représente H ou CH3; W représente O ou S; A est un hétérocycle défini dans la spécification; ces produits peuvent être des sels utiles en agriculture.
Patent CA-2111117-C (CA)
Title: Spatial measurement recovery system
Inventor: LUNDBERG ERIC J
IPC: G01S17/89
Filed: 1992-06-17
Granted: 1998-01-20
Abstract: A spatial measurement recovery system and method which determines the position, orientation, shape and/or operational characteristics of an environment (300). The system includes a data gathering apparatus (100) and a model building apparatus (200). The data gathered may then be transformed into a CADD model or an as-built or as-is environment, or to otherwise map the environment in three dimensions.
Patent CA-2113758-C (CA)
Inventor: LEVINGSTON JERRY C
IPC: F16L47/16
Filed: 1994-01-19
Granted: 1995-04-04
Abstract: A pipe joint for first and second profile wall pipes of the type having generally concentric, spaced apart inner and outer walls, and a helical rib connecting the inner wall to the outer wall. The convolutions of the helical rib extend in multiple turns around the exterior of the inner wall and along the interior of the outer wall for substantially the entire length of the pipe. The pipe joint includes a first exposed portion of the rib of the first pipe, and a second exposed portion of the rib of the second pipe. The exposed helical rib of the first pipe is threadably interengaged with the exposed helical rib of the second pipe.
Patent CA-2114679-C (CA)
Title: Power converter control system
Inventor: TANAKA SHIGERU
IPC: H02M7/527
Filed: 1994-02-01
Granted: 1997-07-01
Abstract: A control system for a pulse-width modulation controlled power converter composed of self-turn-off devices.  The control system includes a voltage command value generator for the power converter, a carrier wave generator and a circuit for correcting at least one of the voltage command value and the frequency of the carrier wave to generate as a corrected voltage command value and a corrected carrier wave.  The control system further includes a gate pulse signal generator for receiving a first signal and a second signal and for comparing the first and second signals to generate gate pulse signals to the self-turn-off devices for controlling the power converter based on a comparison result.  The voltage command value is taken as e (-1  e  +1), and a level setting value is taken as Ea (0 <          Ea < 1).  The gate pulse signal generator receives the voltage command value and the carrier wave as the first and second signals when - Ea  e  +Ea.  The gate pulse signal generator receives one of the voltage command value and the corrected voltage command value as the first signal and one of the carrier wave and the corrected carrier wave as the second signal when e < -Ea or +Ea < e.
Patent CA-2119808-C (CA)
Title: Indication of low battery voltage condition by altering of temperature setpoint
Inventor: KNIEPKAMP DAVID I
IPC: G05D23/19
Filed: 1994-03-24
Granted: 1997-04-22
Abstract: In a digital thermostat powered solely by batteries, when the battery voltage drops to a predetermined value, the thermostat effects a visual indication of the existence of a low voltage condition.   If the batteries are not replaced within a predetermined time period thereafter, and the battery voltage remains adequate to operate the thermostat, the temperature  setpoint  is  automatically  altered  by  being lowered, if in the heating mode, or being raised, if in the cooling mode.  The change in room temperature resulting from the change in temperature setpoint should prompt the user to replace  the batteries. By proper manipulation  of  user operable means, the user can subsequently cancel the altered temperature setpoint and re-establish the desired temperature setpoint so as to provide for normal thermostat operation for a predetermined time period during which the batteries can be replaced.
Patent CA-2128303-C (CA)
Inventor: HEDLEY ROBERT IAN
IPC: E06C5/04
Filed: 1994-07-18
Granted: 2006-02-21
Abstract: An access device, such as a ladder, which is retractable, to provide access between a first position, and a second (retracted) position. The access device (5) is provided with a pair of arms (8) and (9) each pivotally connected at pivots (10) and (11) to a support means, and, to the access member at pivots (12) and (13). The device is configured such that the access member (5) may be retracted whilst maintaining; the second end (7) of the access member (5) elevated relative to the first end (6) of the access member (5). The arms (8) and (9) are preferably provided with one or two dogleg bends therein, to facilitate a totally retracted storage position.
Patent CA-2129654-C (CA)
Title: Method and apparatus for cutting wet concrete
Inventor: CHIUMINATTA EDWARD
IPC: E01C23/02
Filed: 1993-02-12
Granted: 2004-12-14
Abstract: A concrete cutting saw is provided for the cutting of grooves in the surface of wet concrete and comprises a motor driven rotating cutting blade (46) mounted on a support structure (96) is supported by wheels (40), and has a skid plate (42) with a slot (68) through which the rotating cutting blade passes. The cutting blade is mounted with a sound deadening blade housing (496). The skid plate is movably attached to the saw and resiliently urged against the concrete during cutting.     The skid plate is constrained into a bowed configuration so that it is substantially flat during cutting. A variable speed transmission (346) is drivingly connected to the wheels. A sensor (285) detects the relative position of the skid plate and the cutting blade which cooperates with the variable speed transmission to slow down or speed up the saw. A distance counter measures and displays the saw travel distance.     A concrete cutting saw is provided for the cutting of grooves in the surface of wet concrete and comprises a motor driven rotating cutting blade (46) mounted on a support structure (96), is supported by wheels (40), and has a skid plate (42) with a slot (68) through which the rotating cutting blade passes. The cutting blade is mounted within a sound deadening blade housing (496). The skid plate is movably attached to the saw and resiliently urged against the concrete during cutting. The skid plate is constrained into a bowed configuration so that it is substantially flat during cutting. A variable speed transmission (346) is drivingly connected to the wheels. A sensor (285) detects the relative position of the skid plate and the cutting blade which cooperates with the variable speed transmission to slow down or speed up the saw. A distance counter measures and displays the saw travel distance.
Patent CA-2130139-C (CA)
Inventor: BIGELOW SEAN S
IPC: C10M167/00
Filed: 1994-08-15
Granted: 2004-06-29
Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an hydrocarbyl phosphite, wherein each hydrocarbyl group is saturated and independently contains from about 12 to about 24 carbon atoms, (B) an organic polysulfide, and (C) (i) a borated overbased metal salt of an acidic organic compound, (ii) a combination of a borated dispersant and a phosphorus antiwear or extreme pressure agent selected from the group consisting of a phosphoric acid ester or salt thereof, a lower alkyl phosphite, and a phosphorus-containing carboxylic acid, ester, ether, or amide, or (iii) a mixture of (i) and (ii). These compositions provide improved frictional properties to lubricating composition while maintaining the extreme pressure protection of the lubricant. The lubricating compositions have good thermal stability.
Patent CA-2130409-C (CA)
Title: Method and system for routing path determination for mobile workstations in a multisegment local area network
Inventor: MOORE VICTOR S
IPC: H04L12/46
Filed: 1994-08-18
Granted: 1999-06-22
Abstract: A method and system for maintaining a routing path between a selected workstation within a multisegment local area network and a mobile workstation wherein individual segments within the multisegment local area network are interconnected by a router device  and wherein selected segments within the multisegment local area network include radio frequency transceivers adapted to provide a wireless communications link with mobile workstations.   Each time communication is established between a mobile workstation and a selected workstation within the multisegment local area network via a radio frequency transceiver a routing table  entry  is  established which  identifies  a  segment location for the mobile workstation within a routing table associated with each router device within the multisegment local  area  network.    A  routing  table  entry  is  also established which identifies a segment location for the selected workstation within  the routing table associated within each router device within the multisegment local area network in response to each attempt at establishment of communication between  the  selected workstation  and the mobile workstation.  Thereafter, all routing table entries which identify the segment location for a mobile workstation are automatically deleted in response to a termination of communications between the mobile workstation and the radio frequency transceiver.   Routing path determination  for communications  between  a  mobile  workstation  and  any workstation within the multisegment local area network may then  be  determined by  reference  to  a  routing  table associated with each router device within a multisegment local area network without requiring the maintenance of routing path information at each workstation within the multisegment local area network.
Patent CA-2133770-C (CA)
Title: Systeme de production de noir de carbone
Inventor: HAUGSTEN KJELL E
IPC: C09C1/48
Filed: 1993-04-05
Granted: 1998-01-06
Abstract: Dans un système pour la production de noir de carbone et d'hydrogène par la décomposition d'un gaz d'hydrocarbure, on installe en liaison avec le réacteur de décomposition thermique (1) un réacteur (2) doté de zones de température réglable pour contrôler et modifier les propriétés du noir de carbone et pour modifier la surface et la structure du noir de carbone. Le réacteur est doté d'un moyen pour l'alimentation des diverses zones de température en gaz et en matières. En aval du réacteur (2) se trouve un refroidisseur (3) pour les produits de réaction, dans lequel le gaz d'alimentation et le gaz plasmagène peuvent être préchauffés (19) et qui est suivi d'un moyen de séparation qui peut, de préférence, être constitué d'un cyclone (4,5) pour séparer les particules grossières du constituant carboné. Le cyclone (4,5) est relié à un dispositif de filtration (7) pour détourner le noir de carbone ayant la granulométrie et la structure recherchées vers un silo (8) pour traitement plus poussé. Le système est muni d'une conduite pour transférer l'hydrogène en partie à l'industrie chimique de transformation, comme vecteur énergétique, et pour réacheminer une partie de ce gaz dans le réacteur (2) par l'intermédiaire d'une conduite de retour.
Patent CA-2134211-C (CA)
Inventor: WOODWARD JAMES K
IPC: A61K31/445
Filed: 1993-04-06
Granted: 1999-06-29
Abstract: L'invention a trait à un procédé permettant de susciter un effet antihistaminique nécessaire à un patient souffrant de troubles hépatiques. Elle consiste à lui administrer en quantité efficace sur le plan antihistaminique un composé de formule (I), où R1 représente hydrogène ou hydroxy; R2 représente hydrogène; ou bien R1 et R2 conjointement forment une deuxième liaison entre les atomes de carbone qui les portent; n est un nombre entier allant de 1 à 5; R3 représente -COOH ou -COOalkyle où la fraction alkyle comporte 1 à 6 atomes de carbone sous forme droite ou ramifiée; A et B représentent chacun hydrogène ou hydroxy à condition que l'un au moins représente hydrogène. On décrit en outre un sel de ce dérivé qui est pharmaceutiquement acceptable et des isomères individuels de ce sel.
Patent CA-2135944-C (CA)
Inventor: HARRIS ELLIS D
IPC: G02B26/10
Filed: 1994-11-16
Granted: 1998-02-10
Abstract: A rotatable aperture is positioned between the pre-polygon cross-scan cylindrical optical element and the rotating polygon mirror of a laser diode flying spot raster scanner optical system. Rotating the aperture about a line parallel to the axis in the scan plane adjusts the cross-scan resolution of the imaged spot size along the scan line of the raster output scanner optical system.
Patent CA-2141175-C (CA)
Title: A process for the production of tetrazolyl compounds
Inventor: SHIDA YASUSHI
IPC: C07D403/10
Filed: 1995-01-26
Granted: 2006-12-12
Abstract: Disclosed is a process for removing a protective group of an N-protected tetrazolyl compound which comprises reacting said N-protected tetrazolyl compound with a mineral acid under substantially anhydrous conditions in the presence of an alcohol, insuring a high reaction yield of the object tetrazolyl compound.
Patent CA-2145503-C (CA)
Inventor: MALONE RONALD F
IPC: C02F3/06
Filed: 1993-09-23
Granted: 1998-08-11
Abstract: A floating media biofilter (1) is provided, comprising a tank (2) having a filtration chamber (3) and an expansion chamber (4), wherein the filtration chamber (3) is above and fluidically connected with the expansion chamber (4); floating filter media (8) in the tank (2) for forming a floating               (see fig. I) media pack (9), having a top portion; an inlet line (6) fluidically connected to the tank (2) bellow the filtration chamber (3); a sludge line (11) having an output end, fluidically connected to the tank (2) below the lower screen (19); a sludge valve (27), positioned in the sludge line (11); an outlet line (7) fluidically connected to the tank (2) above the upper screen (18); a lower screen (19) having openings adapted to prevent vent the filter media from passing therethrough, positioned in the tank (2) below the filter media and above the sludge line (11); and an air inlet line (10) fluidically connected to the tank (2) for drawing air into the expansion chamber (4).
Patent CA-2151072-C (CA)
Inventor: KRISTOL DAVID MORRIS
IPC: H04L12/56
Filed: 1995-06-06
Granted: 2000-06-27
Abstract: A method of network multicasting using transport layer protocols, suitable for use in ATM networks, is disclosed.  The protocols advantageously combine the acknowledgments of individual destinations along the underlying multicast tree to prevent acknowledgement implosion.  The inventive  method alsoprevents unnecessary retransmission by performing local multicasts.