baber/WOPTO huggingface dataset:
Patent CA-2005587-C (CA)
Inventor: MEYER ERNST-AUGUST
IPC: F16K31/42
Filed: 1989-12-14
Granted: 1999-05-18
Abstract: A servo-operated multiway valve is disclosed which can be optionally used as both a pressurization valve and a ventilation valve for use with a fluid consuming device.  The valve utilizes a valve body to allow fluid communication alternatively between two inlet/vent fluid chambers and an outlet fluid chamber disposed along a central bore, in which the valve body is located.  The device utilizes a servo to displace the valve body of the multiway valve.  Fluid may be introduced to the valve through either of two inlet/vent chambers, to alternatively allow fluid to flow to the outlet chamber in the resting or the activated mode of the servo.  The servo is in fluid communication with the selected inlet chamber at all times, and does not communicate with the selected vent chamber.  This is achieved through the use of dual passages, connecting each of the inlet/vent chambers to the servo.  Fluid flows from the appropriate inlet chamber to the servo, through the associated passage.  A check valve in each passage prevents backflow between the servo and the associated chamber, when that chamber is functioning as a vent.
Patent CA-2006154-C (CA)
Title: Revision knee prosthesis
Inventor: MANGINELLI RICHARD PAUL
IPC: A61F2/38
Filed: 1989-12-20
Granted: 1999-03-23
Abstract: A revision knee prosthesis which includes augmentation blocks that may be added to the inferior surface of the femoral component of the prosthesis.  The blocks have a post on one surface which is secured in a cavity in the inferior surface.
Patent CA-2006529-C (CA)
Inventor: DAVIS LARRY
IPC: C07D401/14
Filed: 1989-12-22
Granted: 1999-08-10
Abstract: N-Pyridinyl-9H-carbazol-9-amines, a process for their preparation and their use as medicaments The present invention relates to compounds of the formula (see fig. I) where, X is hydrogen, loweralkyl, loweralkoxy or halogen;      Y is hydrogen, loweralkyl or halogen;      Z is hydrogen, loweralkyl or halogen;      R is hydrogen, loweralkyl, loweralkenyl, loweralkylcarbonyl, dimethylaminoloweralkyl or (see fig. II) m being an integer of 1 to 6, with the proviso that when R is loweralkenyl the double bond is not alpha to the nitrogen atom; and a process for their preparation.      The compounds are useful analgesic, anticonvulsant and antidepressant agents, and for treating various memory dysfunctions characterized by decreased cholinergic function such as Alzheimer's disease, and can, therefore, be used as medicaments.
Patent CA-2008022-C (CA)
Title: Conveyor having self-propelled carrier
Inventor: WAKABAYASHI TAKAO
IPC: G05D1/02
Filed: 1990-01-18
Granted: 1999-03-30
Abstract: A conveyor comprising a plurality of self-propelled carriers each having a distance sensor for detecting the distance between the carrier and the preceding carrier continuously or stepwise, and a device for controlling the speed of the carrier so that the distance is within a predetermined range.
Patent CA-2010031-C (CA)
Title: Alkaline cell
Inventor: NISHIMURA JOJI
IPC: H01M6/06
Filed: 1990-02-14
Granted: 1994-05-17
Abstract: ABSTRACT OF THE DISCLOSURE         An alkaline cell having a gelled zinc negative electrode solely or mainly using, as a gelling agent to hold a zinc powder in an alkaline electrolyte, a granular crosslinking type branched polyacrylic acid, polymethacrylic acid or salts thereof.         This gelling agent, holding an alkaline electrolyte, swells and properly maintains the thickness of the electrolyte, whereby the electrolyte can be sufficiently fed to a cell reaction portion and the alkaline cell is imparted with excellent drop resistance and shelf stability.
Patent CA-2019687-C (CA)
Title: Vacuum sealer
Inventor: DENI FRANK
IPC: B65B31/02
Filed: 1990-06-22
Granted: 1995-07-18
Abstract: The novel vacuum sealer of this invention has three wires that are heated to varying degrees.  Two wires are used or dedicated to sealing a plastic bag and one of the wires is used to cut the bag after the vacuum sealing step.  The vacuum sealer is tapered downwardly, i.e. has a low profile, for a better air flow during the vacuuming step.  A turbine with curved fins is used to increase the air flow and reduce the time to evacuate air from the bag.  Also, the low profile of the unit, the increased size air ducts and the curved fins on the turbine, provide a more effective system for evacuating air from the plastic bag to be used.
Patent CA-2020356-C (CA)
Title: Process for the preparation of cypermethrine isomers
Inventor: ZOLTAN SANDOR
IPC: A01N53/00
Filed: 1990-01-17
Granted: 2002-09-03
Abstract: The invention relates to a process for the preparation of such isomer mixtures of cypermethrine of formula (I), wherein car-bon atoms indicated by 1,3 and .alpha. stand for a chiral carbon atom and the wavy line indicates cis or trans configuration related to the cyclopropane ring - which contains out of the theoretically possible 8-isomers of cypermethrine at least 95 % of 1 RtransS and 1StransR (Ib) isomer pair or only a mixture of 1RcisS and 1ScisR (Ia) and the isomer pair (Ib) of the ratio (Ia):(Ib) = 55:45 -25:75 by asymmetric transformation of second order performed in the presence of an amine base and solvent from a starting cy-permethrine isomer mixture which contains next to the isomer pair (Ib) cis and other trans isomers or the isomer pair Ia + Ib at an undesired ratio.
Patent CA-2028999-C (CA)
Title: Continuous winder for web materials
Inventor: MOELLER ROBERT F
IPC: B65H19/28
Filed: 1990-10-30
Granted: 1999-03-30
Abstract: A continuous winder for web material includes two pairs of turret arms mounted for rotation with respect to each other on a common axis, and also includes a lay-on roll mounted for lateral movement toward and away from the axis of the turret arms.  The lay-on roll maintains pressure engagement with the winding roll until the interval of actual roll changing, when it moves from the wound roll into pressure engagement with the new core with the web running therebetween, whereupon the web is cut between the two rolls to complete the roll change.  The knife assembly for cutting the web is carried by another pair of pivotally mounted arms and includes a clamp mechanism on each arm which effects rotatable clamping engagement with the adjacent turret arm carrying the new core so that the knife arms and the core-carrying turret arms travel together throughout the actual operation of roll changing and thereby assure that the knife is held in proper relation with the core before the roll change is made and while it is being made.
Patent CA-2029664-C (CA)
Title: Welding accessory
Inventor: YOSHIDA MIKIHIKO
IPC: B23K35/36
Filed: 1990-11-09
Granted: 1996-05-28
Abstract: A welding accessory which includes an arc shield having outer and inner peripheral surfaces such that a weld can be formed within the inner peripheral surface as the arc shield shields the weld from external air during forming of the weld. The arc shield includes a ceramic material having not less than 40 weight % of boron nitride. The arc shield may be formed of a composite of boron nitride and silicon nitride, a composite of boron nitride and alumina nitride, a composite of boron nitride, aluminum and silicon nitride, or a composite of boron nitride and zirconia.
Patent CA-2036073-C (CA)
Title: Oxygen sensor
Inventor: NAGAI TAKESHI
IPC: G01N27/41
Filed: 1991-02-11
Granted: 1995-01-03
Abstract: An oxygen ion conductive solid-electrolyte plate (1) has first and second opposite surfaces.  A plurality of negative electrodes (21b, 22b) and positive electrodes (21a, 22a) are formed on the first and second surfaces of the solid-electrolyte plate (1) , respectively, and each of the plurality of negative electrodes (21b, 22b) is opposed to each of the plurality of positive electrodes (21a, 22a).  A spacer (5 or 7) is hermetically secured to the first surface of the electrolyte plate (1) and at the same time surrounds each of the plurality of negative electrodes (21b, 22b).  A sealing plate (3) is also hermetically secured to the spacer (5 or 7).  A plurality of closed spaces (61, 62) are thus defined as spaces surrounded by the solid-electrolyte plate (1), spacer (5 or 7) and sealing plate (3).  A plurality of windows (41, 42) are provided in the sealing plate.  Each of the plurality of closed spaces (61, 62) embraces one negative electrode of the plurality of negative electrodes (21b, 22b) and one window of the plurality of windows (41, 42).          Each of the plurality of closed spaces (61, 62) communicates with the external space through one of the plurality of windows (41, 42).  Each of the plurality of windows (41, 42) allows oxygen molecules to diffusely flow from the environment into each of the plurality of closed spaces (61, 62) through each of the plurality of windows (41, 42).
Patent CA-2039636-C (CA)
Title: Method and apparatus for controlling ultrasonic fragmentation of body tissue
Inventor: URECHE ALEXANDER
IPC: A61M1/00
Filed: 1991-04-03
Granted: 2000-11-14
Abstract: This invention is related to an improved method and apparatus for use in controlling the ultrasonic fragmentation of the body tissue. The ultrasonic apparatus includes a transducer assembly mounted in a handpiece assembly. The transducer is operable for converting electrical power to ultrasonic mechanical vibrational energy. A vibrational amplifying device is coupled to the transducer assembly and includes in series asymmetrical horn and symmetrical horn portions. Included in one of the horn portions is an operative tip.
Patent CA-2045891-C (CA)
Inventor: ROSCH HANNELORE
IPC: C07H21/00
Filed: 1991-06-28
Granted: 2003-07-22
Abstract: Oligonucleotide analogs with terminal 3'-3' or 5'-5' internucleotide linkages Therapeutically utilizable oligonucleotides of the formulae I and II have been obtained by introduction of terminal 3'-3' and 5'-5' linkages. These compounds are stable to nucleases and suppress the biological function of nucleic acids.
Patent CA-2046361-C (CA)
Title: (6,7-substituted-8-alkoxy-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid-03,04) bis (acyloxy-0) borate, salts and hydrates thereof
Inventor: TAKAGI NAOMI
IPC: C07F5/02
Filed: 1991-07-05
Granted: 1999-07-20
Abstract: (6,7-Substituted-8-alkoxy-1-cyclopropyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid-O3,O4) bis (acyloxy-O) borate, and salts and hydrates thereof, represented by the general formula (I)   wherein X denotes a halogen atom; R denotes an aliphatic acyloxy group having 2 - 6 carbon atoms, aliphatic acyloxy group having 2 - 6 carbon atoms optionally substituted with a halogen atom, or aromatic acyloxy group having 7 - 11 carbon atoms; R1 denotes a lower alkyl group; R2 denotes a hydrogen atom, halogen atom, amino group or nitro group; Z denotes a halogen atom,   (wherein n is 1 or 2; R3 denotes hydrogen atom; a lower alkyl group, acyl group, alkoxycarbonyl group or aralkyl group; R4 and R5 each independently denote a hydrogen atom, lower alkyl group, substituted lower alkyl group, cycloalkyl group or phenyl group respectively) or   (wherein k is 0, 1 or 2; ~ is 0, 1 or 2; m is 0 or 1; R6 denotes a hydrogen atom, halogen atom, lower alkyl group or hydroxyl group; R7 denotes a hydrogen atom, lower alkyl group or substituted lower alkyl group; R8 denotes a hydrogen atom, lower alkyl group, acyl group, alkoxycarbonyl group or aralkyl group) or an azetidino group, pyrrolidino group, 3-hydroxypyrrolidino group, piperidino group, morpholino group or thiomorpholino group.  These compounds are especially useful in the preparation of quinolonecarboxylic compounds which are useful as medicaments.
Patent CA-2049284-C (CA)
Title: Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system
Inventor: BARNES KEITH W
IPC: H04B7/15
Filed: 1990-03-30
Granted: 2002-01-29
Abstract: An alternate home channel for a land mobile transmission trunked communication system designates one of a plurality of repeaters for a given site or coverage zone as an alternate home repeater. The control signals transmitted over the subaudio band for all home channel repeaters in that site are also duplicatively transmitted over the subaudio band of the alternate home repeater. Each mobile transceiver will be programmed with two channel numbers. One for the home repeater and the other for the site alternate home repeater. When the power is turned on, the mobile transceiver determines which repeater to monitor by scanning both the home and alternate home channels. When a valid control message is detected on either channel, that channel becomes the monitor channel. Operation of the mobile transceiver is then generally similar to prior operation, with the exception that the monitor channel (either home or alternate home channel) is used instead of just the home channel.
Patent CA-2055032-C (CA)
Title: An endoscopic surgical instrument for displacing tissue or organs
Inventor: BILWEIS JOSEPH
IPC: A61B17/00
Filed: 1991-11-06
Granted: 2003-01-07
Abstract: A surgical instrument, in particular for endoscopic surgery, the instrument comprising a tube designed to be connected at its distal end to inflation/deflation means and provided at its proximal end with an inflatable spatula which communicates with the inflation/deflation means via a tube.
Patent CA-2055565-C (CA)
Inventor: WIEGNER GEORG
IPC: A63C5/035
Filed: 1991-11-14
Granted: 1998-12-01
Abstract: In sport equipment in the form of short ski-like rollers for each foot, with a support as base for the shoe of the user and only one front wheel and one rear wheel each, a particularly compact and maneuverable construction of the equipment is achieved owing to the fact that the front wheel and the rear wheel and their axes are disposed within the longitudinal extent of the support.
Patent CA-2056634-C (CA)
Title: Josephson device and a process for fabricating the same
Inventor: TAMURA ITSURO
IPC: H01L39/02
Filed: 1991-11-29
Granted: 1997-07-29
Abstract: In a Josephson device which can be employed as a sensor including superconductor for measuring an extremely weak magnetic field, a Josephson junction consisting of superconducting material is formed, and a covering layer consisting of ordinary conducting metal or semiconductor is formed on the Josephson junction.  This enables the Josephson junction to be isolated from the oxidized atmosphere.  Further, the covering layer is not to present any deterioration such as cracks even upon being subjected to a thermal hysteresis from very low temperature to ordinary temperature.
Patent CA-2056828-C (CA)
Inventor: ELDERSHAW MICHAEL K
IPC: H01H13/70
Filed: 1991-12-02
Granted: 1997-07-22
Abstract: A keypad is comprised of a supporting frame, a plurality of snap action domes, and a plurality of pushbuttons each overlying a dome, all of the above being integrated and formed of a single piece of elastomeric material, the pushbuttons each being surrounded by a thin piece of the material buttressing the pushbutton upwardly, each of the thin pieces of material and an associated portion of the pushbutton forming a dome.  The thin pieces of material extend from and are continuous with the frame.  Each conducting button is disposed below a corresponding dome and is located such that when a pushbutton is pushed downwardly, its associated dome collapses, moving an associated button downwardly.
Patent CA-2057711-C (CA)
Title: Antibiotic agent
Inventor: SCHWARTZ ROBERT E
IPC: A61P31/04
Filed: 1991-12-16
Granted: 2002-01-22
Abstract: A new antibiotic cyclic lipopeptide having the formula (see formula I) wherein R is H or OH and a method of producing is described. The agent has very high activity against human pathogens and is of very low mammalian toxicity.
Patent CA-2062213-C (CA)
Inventor: MINICOZZI ALFONSO
IPC: B23C5/20
Filed: 1992-03-03
Granted: 1996-07-16
Abstract: This relates to a cutting insert for use in a rotary cutting tool having helically arranged teeth, comprising, a six sided block having two major parallel rhomboid-shaped plane sur-faces constituting a seating face and a clearance face respective-ly, two opposed minor side surfaces constituting cutting faces extending between the seating and clearance faces, each said cut-ting face forming an acute angle with the clearance face and form-ing a cutting edge along the intersection therewith, and two minor parallel plane end faces extending between the seating and clear-ance faces and the two cutting faces.  Each cutting face has a concave curvature centrally of its major dimension, and a convex curvature at each end of its major dimension to define a serpen-tine cutting face and cutting edge.  When disposed along the helically arranged teeth of a rotary cutting tool, such as a mil-ling cutter, the inserts form a cutting face, or a radial face, having a continuously variable positive radial rake angle, and a cutting edge of serpentine configuration which generally parallels the helical form of the teeth.
Patent CA-2062987-C (CA)
Inventor: TOTH LOUIS
IPC: F21S8/08
Filed: 1992-03-13
Granted: 2001-12-04
Abstract: A retractable low voltage lighting fixture can be buried in the ground leaving only the top surface exposed and flush with the ground surface. When activated, an interior lamp housing raises out of the ground via a mechanical drive and a lamp contained therein lights up. The lighting fixture provides illumination for walkways, driveways and other areas requiring outdoor lighting. After a specified period of time, the light goes off and the interior housing is driven back down into the ground flush with the ground surface, completely hidden and out of the way of possible damage by vandalism or accidental breakage.  The lighting fixture is comprised of two major component parts - an interior lamp housing and an elongated exterior housing. The interior lamp housing houses the following components: switches, gearbox, motor, electrical components, batteries and light bulb. The exterior housing is buried in the ground and slideably receives the interior lamp housing. The exterior housing provides the appropriate electrical connections and removably receives a gear rack to which the interior lamp housing is drivingly engaged.
Patent CA-2067374-C (CA)
Title: Osteogenesis promoter
Inventor: YAMAGUCHI MASAYOSHI
IPC: A61K31/415
Filed: 1990-09-28
Granted: 2000-07-04
Abstract: the present invention relates to an orally-administrable osteogenesis promoter, which comprises, as an active ingredient, a zinc salt or complex of h-carnosine, has excellent osateogenesis-accelerating action, and is extremely low in toxicity and side effects.
Patent CA-2072694-C (CA)
Inventor: BRATTEN JACK R
IPC: B01D29/62
Filed: 1992-06-29
Granted: 2004-06-08
Abstract: A liquid filter and method is disclosed comprised of a housing defining a filter chamber, with a filter belt advanced into the filter chamber and receiving liquid flow to filter the liquid. Different sections of the filter belt are alternately positioned in the filter chamber by a pair of drive-take up rollers each positioned on one side of an entrance opening to the filter chamber, which are driven in opposite directions after alternate cycles. Each section of the filter belt is scraped when exiting and subsequently cleaned with washing sprays as the particular section is advanced back into the filter chamber. The filter belt is detachably attached at either end to a respective roller by a sewn in flexible element received an undercut groove in the roller surface.
Patent CA-2075305-C (CA)
Title: Method and means for addressing a very large memory
Inventor: BAUM RICHARD I
IPC: G06F9/32
Filed: 1992-08-05
Granted: 1998-09-29
Abstract: Provides relatively simple ways to obtain and control extenders (EXRs) for extending the size of small real and absolute addresses (up to 31 bit) to enable them to locate data or program entities anywhere in a very large memory (greater  than  2**31).   The  EXR  is  concatenated  to  the high-order  end  of  a  conventionally-generated  real  or absolute address of  less  than 32 bit size to provide  a real/absolute address of greater than 31 bit size (e.g. 63 bits).  Each EXR value defines a section of a very large memory.  The type of EXR location being used is indicated by having a CP extended address mode (CPEAM) field in a control register  (CR).   The CPEAM field indicates  if the CP EXR field is associated with ARs, PTEs, STEs or ASTEs, or if a compatibility mode exists requiring no extender.  When a CP program operates in the DAT-OFF mode, the EXR is contained in  a  register  associated  with  a  base  register  being currently used for operand address generation. When the CP is operating in DAT-ON mode,  several  different types of fields may be  indicated,  and the  indicated EXR type  is accessed during the address translation process, such when accessing an ASTEs,  STE or PTE.  The EXR field associated with the ASTE,  STE  or  PTE  is  not used  in  the  address translation process, but are only for address extension.  By not  affecting  the  translation  process,  the  disclosure maintains  downward  compatibility  for  programs  providing conventional small (e.g.31 bit) translated real addresses. Furthermore, an I/O EAM field is provided in a control block with each asynchronous I/O program to indicate the type of location being used for an I/O EXR field for providing the I/O EXR.  The IOEAM field indicates if the I/O EXR field is associated  with  an  ORB,   CCWs,   or  IDAWs,   or  if  a compatibility mode  exists  requiring no  extender  for  I/O addressed data.  This allows the I/O data of an I/O program to be mapped into one or plural sections of a very large memory,  which  may  be  the  same  or  different  from  the section(s) addressed by the CP EXR.
Patent CA-2075724-C (CA)
Title: Vehicle transmission with central differential
Inventor: WEISS HEINZ
IPC: F16H47/04
Filed: 1992-08-14
Granted: 1995-07-25
Abstract: A vehicle transmission, particularly for industrial and agricultural vehicles, includes a speed change gearset (gear and range) and a central differential for distributing the gearset output to the front and rear axles of the vehicle. The central differential is formed of a Ravigneaux gearset to reduce the dimensions of the transmission and to minimize the costs and technical resources required to produce it.  The Ravigneaux gearset distributes the torque of a gear output shaft to the front and rear axles according to the ratio of the two Ravigneaux sun gear diameters.  Preferably, the end stage of the speed change gearset is formed by a further Ravigneaux gearset, and the planet carriers of both Ravigneaux gearsets are formed as a common structural member carrying the planets of both Ravigneaux gearsets.
Patent CA-2078703-C (CA)
Title: Process for detecting specific mrna and dna in cells
Inventor: BANKER MICHAEL J
IPC: C12Q1/68
Filed: 1992-09-21
Granted: 2000-10-17
Abstract: This invention relates to a process for detecting the presence and measuring the quantity of specific mRNA sequences present in in vivo cells or cells maintained in vitro. The process of this invention is applicable to the screening of procaryotic and eucaryotic organisms including the screening of human beings for the presence of disease states. The process of this invention is also applicable to the in vitro screening of the effect or effects of chemical compounds upon one or several gene products as exhibited by the presence and amount of mRNA resulting from transcription of said gene or genes. The process of this invention is particularly suited for screening of a large number of compounds for the effect or effects of compounds upon gene products. This invention also relates to compounds capable of affecting the presence of specific mRNA sequences in cells. The process of this invention also is applicable to the identification of novel gene constructs in viruses, microorganisms, plants and animals. This invention also relates to a novel process for the isolation of RNA and DNA from cells.