baber/WOPTO huggingface dataset:
Patent CA-2028943-C (CA)
Title: Fiber optic gyro
Inventor: OKADA KENICHI
IPC: G01C19/72
Filed: 1990-10-30
Granted: 1994-02-15
Abstract: ABSTRACT OF THE DISCLOSURE        In a fiber optic gyro of a zero serrodyne system employing a linear ramp voltage, a phase difference is provided, by a rectangular biasing voltage of a fixed period, between two rays of light which propagate through an optical fiber coil in opposite directions. Interference light of the two rays of light is detected and the detected output is synchronously detected by the biasing voltage in a synchronous detector.  A positive increment and a negative increment in the synchronously detected output are detected by a positive increment detector and a negative increment detector, respectively. The positive and negative increments thus detected are added together by an adder, and based on the added output, a ramp voltage generator is controlled so that a maximum ramp phase shift which is applied to the two rays of light may be an integral multiple of 2 .pi.rad.
Patent CA-2030101-C (CA)
Title: Shear resistant building panel assembly
Inventor: SCHILGER HERBERT K
IPC: E04G11/36
Filed: 1990-11-15
Granted: 2000-07-04
Abstract: A novel connector is described for joining formwork panels to supporting studs or beams such that high shear resistance is provided in a concrete panel formed on the formwork panels. This connector is a dished shear washer having a flat, circular base and upturned skirt portion. A plurality of these shear washers are positioned on the formwork panels in alignment with the studs or beams, and with the skirt portion extending outwardly away from the formwork panels. In this position the shear washers, formwork panels and studs or beams are securely fastened together and a concrete panel is poured on the formwork. The concrete surrounds the upturned skirt portions resulting in an extremely strong structure have, in particular, high shear resistance.
Patent CA-2032267-C (CA)
Title: Lightweight missile guidance system
Inventor: BEAM NORMAN E
IPC: F42B15/01
Filed: 1990-12-14
Granted: 1994-04-19
Abstract: ABSTRACT OF THE DISCLOSURE      A lightweight missile terminal guidance system(14)is disclosed which includes a seeker (16) for providing a first signal indicative of a first angle .epsilon. between a line-of-sight (15) from the missile(10)to a target(12)and a longitudinal axis (9) extending through the missile(10). The seeker(16)also provides a second signal indicative of a second angle .delta. between the longitudinal axis (9) extending through the missile(10)and a line-of-sight(11) between the missile (10) and a celestial body (13).  A processor (18) is included for computing the line-of-sight angle a between the line-of-sight (15) from the missile (10) to the target (12) and the line-of-sight (11) from the missile(10)to the celestial body (13) from the first and second angles .epsilon. and .delta..  A terminal guidance subsystem(24) computes acceleration commands from the line-of-sight .sigma. angle which are used by a propulsion system(26)to change the velocity vector of the missile(10) in response thereto.
Patent CA-2033223-C (CA)
Title: Compound control method for controlling a system
Inventor: TANI TETSUJI
IPC: G05B13/02
Filed: 1990-12-27
Granted: 1995-10-10
Abstract: A compound control method involves Proportional Plus Integral Plus Derivative Control (PID control) and Fuzzy Control.  The method controls a system by inputting data obtained from the system to be controlled to a PID control operation so as to obtain a control variable from the PID control operation, inputting the data obtained from the system to a fuzzy operation so as to obtain a correcting variable from the fuzzy operation, correcting the control variable by the correcting variable so as to obtain a corrected control variable, and inputting the corrected control variable to the system to control the system.
Patent CA-2040437-C (CA)
Title: Neurotrophin-3, a novel neurotrophic factor related to nerve growth factor and brain derived neurotrophic factor
Inventor: HOHN ANDREAS
IPC: A61K38/18
Filed: 1990-08-29
Granted: 2002-10-22
Abstract: The present invention relates to neurotrophin-3(NT-3), a newly discovered member of the BDNF gene family.      It is based, in part, on the identification of regions of nucleic acid sequence homology shared by BDNF and NGF.     According to the present invention, these regions of homology may be used to identify new members of the BDNF/NGF gene family; such methodology was used to identify NT-3. The present invention provides for the genes and gene products of new BDNF/NGF related neurotrophic factors identified by these methods. According to the invention, NT-3 may be used in the diagnosis and/or treatment of neurologic disorders, including, but not limited to, Alzheimer's disease and Parkinson's disease. Because NT-3 has been observed to exhibit a spectrum of activity different from the specificities of BDNF or NGF, NT-3 provides new and valuable options for enduring regrowth and repair in the central nervous system.
Patent CA-2041130-C (CA)
Inventor: CARUANA CHARLES MICHEL
IPC: B23K11/11
Filed: 1991-04-24
Granted: 2000-04-04
Abstract: Le dispositif comporte un manipulateur (4) qui assure à partir d'un poste à dispositif calibreur (3) le transfert d'une aube (2) sur un montage de soudage (6) et un barillet (20) qui porte les chargeurs munis de plaquettes, extraites au moyen d'un vérin et amenées en position au moyen d'un descenseur (22) et d'un dispositif de transfert (24), un tourniquet (21) assurant le retournement d'une plaquette sur deux. Le pointage est assuré par l'appui d'une électrode de soudage sur la plaquette tandis qu'une électrode de masse est au contact de l'aube (2). Un procédé mettant en oeuvre le dispositif est également décrit.
Patent CA-2041576-C (CA)
Inventor: JOHNSON MICHAEL A
IPC: C09J7/02
Filed: 1991-05-01
Granted: 2001-08-07
Abstract: Release liners comprising support sheet and face layer, the face layer comprising one or more of the following: a copolymer of ethylene and at least one polar comonomer, or a copolymer of propylene and at least one polar comonomer, or blends of such copolymers. Such release liners provide low temperature shock resistance and smooth, substantially uniform release characteristics when applied to acrylic pressure-sensitive adhesives.
Patent CA-2047870-C (CA)
Title: Automatic power control apparatus
Inventor: TSUTSUMI SHYUITSU
IPC: H03G3/20
Filed: 1991-07-25
Granted: 1997-12-16
Abstract: An automatic power control apparatus according to the present invention comprises a level varying unit such as a variable amplifier for amplifying a modulated wave output from a transmitter at an amplification factor specified by an external device, a level detecting unit such as a level detector circuit for detecting a power level of the modulated wave output from the level varying unit, a computing unit such as a high-speed computing unit for, during a period other than a time slot assigned to the transmitter, computing a power level of a non-modulated wave which is varied by a modulated wave obtained by linearly modulating a carrier wave in response to a modulation signal generated based on digital data to be transmitted in the next time slot, and a comparing unit such as a comparator circuit for comparing a power level, which is obtained by adding a difference between the power level computed by the computing unit and an average power level in the time slot to the average power level, with the power level detected by the level detecting unit.  In the automatic power control apparatus according to the present invention, an amplification factor of the level varying unit is adjusted so that the power levels compared by the comparing unit become equal to each other during a transmission period of the non-modulated wave, and the level varying unit is then operated at the amplification factor during a transmission period of the modulated wave.  Furthermore, a sending level of sending data is set based on the sending data to be transmitted during one time slot.
Patent CA-2048187-C (CA)
Title: Process for making an al ou an al alloy moulded piece with integrated canals
Inventor: DARSY ERIC
IPC: B23P19/02
Filed: 1991-07-31
Granted: 1999-04-27
Abstract: The invention relates to a method for production of castings of aluminium or its alloys comprising integrated runners intended for the distribution of a lubricant or for the circulation of a heat-exchange fluid. 
<??>The method is characterised in that: 
 
  - one or more previously shaped tubes of aluminium or aluminium alloys are placed in a mould, the ends of the tube or tubes being outside the mould or the cores inserted therein; 
  - the alloy is poured into the cavity of the mould; 
  - after removal from the mould, the excess parts of the tube or tubes are removed. 
 
<??>This method applies to the mass-production of castings having a system of internal runners, such as cylinder heads, compressor cylinders, lubrication systems, convectors, etc. 
<IMAGE>
Patent CA-2056210-C (CA)
Inventor: OGG RANDY GENE
IPC: B26F1/18
Filed: 1991-11-27
Granted: 1996-03-12
Abstract: Disclosed  is  a  perforator  blade  for  core  wound  paper products, such as toilet tissue and paper towels.  The perforator blade has a relatively narrow notch width and a relatively narrow tooth width.  As the notch width and tooth width of the perforator blade are decreased, the total notch width, which is the aggregate of  the  width  of  each  notch  across  the  total  width of  the perforator blade, is similarly decreased.     A  perforator  blade  according  to  the  present  invention provides   very   high   perforation   bond  strengths,   joining superimposed  plies  in  face-to-face  relation,  without  unduly increasing the tensile strength of the lands bridging adjacent sheets of the core wound paper product.  Also,  individual  tooth flexibility  is  increased  according  to  the  present  invention resulting in enhanced perforator blade life and perforation bond quality.   Perforated  paper  products  according to  the  present invention  also  exhibit  less  lint,  reducing  hygiene  problems, reduced  occurrences  of  sheet  tearing  during  dispensing,  and provide a smoother, better finished appearance during dispensing.
Patent CA-2063355-C (CA)
Title: Steel for rotor shafts of electric machines
Inventor: KURIYAMA MITSO
IPC: C22C38/46
Filed: 1992-03-18
Granted: 1997-12-09
Abstract: The present invention relates to new low-alloy steel compositions and rotor shafts for electric machines made such steel.  High nickel and chromium contents ensure high strength and toughness, while other components, notably silicon and other impurities, are kept low with the result that magnetic properties remain good.  One aspect provides a steel with the following proportions by weight:        C    0.15 to 0.3% Si   0.1% Mn   1% Ni   3 to 5% Cr   2%,  3.5% (Mo + W) 0.1 to 1.0%, W being optional V    0.03 to 0.35%; and the remainder substantially Fe.
Patent CA-2065479-C (CA)
Title: Ferrous dithionite process and compositions for removing heavy metals from water
IPC: C02F1/52
Filed: 1992-04-07
Granted: 1999-03-09
Abstract: Heavy metal ions react with ferrous dithionite in acidic aqueous solution. They are reduced to metallic particles that are suitable for recycling and reuse when recovered from the acidic water.  When chelating agents are present, they are deactivated by bonding to the ferrous ions.  Ferrous dithionite, (FeS2O4) is either generated in-situ or ferrous ions and dithionite ions can be provided by other methods.
Patent CA-2067715-C (CA)
Inventor: STIGBERG CARL E
IPC: D21F3/02
Filed: 1992-04-30
Granted: 1997-03-25
Abstract: A belt for use on a long nip press for dewatering a fibrous web may be manufactured by winding an elongated strip onto a pair of process rolls to form a closed helix.  Adjacent coils of the closed helix are bound to one another with an adhesive.   The elongated strip includes a reinforcing web coated on one side with a uniformly smooth coating of a polymeric resin.   The other side of the reinforcing web is coated with another polymeric resin of higher hardness value, and is provided with grooves.  The elongated strip is wound onto the process rolls to produce a belt with a grooved outer surface.  The method facilitates the manufacture of belts of a variety of widths and lengths.
Patent CA-2074087-C (CA)
Title: Paint roller and apparatus and method for making the same
Inventor: SEKAR CHANDRA
IPC: B05C17/02
Filed: 1990-08-15
Granted: 1998-05-26
Abstract: This invention relates to a method and apparatus for making reusable paint rollers comprised of a core formed from thermoplastic material. Known methods and apparatus suffer from the drawbacks of bulky preformed thermoplastic tubular cores that are difficult to handle and expensive to transport, long assembly lines and the need for a heater. The above problems are solved by providing a method and apparatus for making reusable paint rollers comprised of a core formed from thermoplastic material. The thermoplastic material is formed into a core (18) about a stationary mandril (14). An adhesive is then applied to the core (18) thereupon a cover (30) is bonded thereto. In a first embodiment, the core (18) is formed by winding a plurality of thermoplastic strips (24, 26, 28) about the mandril (14). In a second embodiment, the core (18) is formed by applying liquified thermoplastic material to a driven belt (16) which transfers the thermoplastic material to the mandril (14).
Patent CA-2075183-C (CA)
Inventor: BAKER JOSEFINA T
IPC: B01L3/00
Filed: 1991-12-16
Granted: 2001-03-20
Abstract: Une lame pour échantillon, selon la présente invention, comprend un panneau avant pourvu d'un côté destiné à la substance à examiner et d'une partie d'une feuille d'essai, le côté destiné à la substance à examiner comprenant au moins une ouverture configurée de façon à recevoir un échantillon à examiner à travers l'ouverture dans la feuille d'essai, et un panneau arrière comprenant un côté de développement à travers lequel le côté opposé de la feuille d'essai est exposé. Un élément indicateur est placé sur la partie de la feuille d'essai se trouvant du côté de développement, à proximité de la partie de la feuille d'essai juste en face de l'ouverture mais pas directement dessus.
Patent CA-2080627-C (CA)
Title: Method and apparatus for reinforcing inner surface of glass containers
Inventor: UEDA SADAO
IPC: C03B9/193
Filed: 1992-10-15
Granted: 1996-12-17
Abstract: This invention relates to a method for reinforc-ing the inner surface of a glass container when made by the press-and-blow system, which burns or decom-poses fuel gas or a gaseous boron or silicon compound inside a parison when the parison molded in the blank mould and transferred to the finish mould is submitted to the final blowing into the final shape in the said mould.    This invention also provides a finish mould of which the blow head is provided with a low selector valve which is open during combustion within the parison and closed during final blowing by the pres-sure of compressed air.
Patent CA-2081124-C (CA)
Title: Scroll saw bearing compensating mechanism
Inventor: STEINER ROBERT E
IPC: B23D49/00
Filed: 1992-10-22
Granted: 1994-09-13
Abstract: A scroll saw is disclosed as having a saw blade connected between the free ends of the arms of a C-shaped member.  The C-shaped members is reciprocated about a horizontal pivot shaft at the closed or yoke end of the C-shaped member in order to reciprocate or drive the saw blade.   An automatic bearing adjustment  mechanism is provided for the horizontal pivot shaft that reciprocates the C-shaped member.  For this purpose, an outwardly directed resilient force is applied against one of two bearings at opposite ends of the horizontal pivot shaft, the resilient force also applying an inwardly directed force through the horizontal pivot shaft to the other bearing, in order to eliminate any bearing play during operation and use of the scroll saw.
Patent CA-2091126-C (CA)
Title: Electroconductive article, method of producing same, and motor produced from the article
Inventor: ITOH YOSHIYASU
IPC: C22C1/04
Filed: 1993-03-05
Granted: 1997-12-23
Abstract: An electroconductive material has at least one portion in which the electrical resistance varies continuously along a gradient.  Accordingly, since the material is not formed by directly bonding different elements, it does not have a weak joint portion. Further, since other material characteristics basides electrical resistance also vary along a gradient, for instance, when the material is used at a high or low temperature, a large thermal stress does not generate at an interface between different elements of the material due to a difference of thermal expansion coefficients of such elements.   A method of producing an electroconductive material comprises the steps of adding and additive to a base material, producing plural alloy materials having different compositions, respectively, overlapping the produced plural alloy materials, and joining the overlapped materials by plastic processing. A motor uses the above electroconductive material as a conductor provided in a plural slots.  Consequently, starting characteristics of the motor are improved due to the skin effect, and internal stress of the motor due to the thermal expansion of the conductor is decreased. Moreover, the reliability of the motor is improved.
Patent CA-2092292-C (CA)
Title: A multiple user spread-spectrum communication system
Inventor: SCHAEFFER DENNIS RAY
IPC: H04J4/00
Filed: 1992-06-08
Granted: 1996-06-04
Abstract: A communication system having a site (42) employing a plurality of communication channels. Each channel is assigned a desired received signal strength threshold. A channel is assigned to a subscriber unit (43a 43b) based upon the strength of the sig-nal received at the site (42) and the power control range of the suscriber unit (43a, 43b). The selection of a channel may be per-formed either by the site (42) or the subscriber unit (43a 43b). In an FDMA environment (50), each separate frequency division channel may be assigned different received signal strength thresholds. In a non-overlapping time interval (TDMA) environment (70), each separate time division channel may be assigned different received signal strength thresholds. In another embodiment (80), a combination of FDMA and TDMA environments can be used.
Patent CA-2093638-C (CA)
Title: High dynamic range closed loop automatic gain control circuit
Inventor: WHEATLEY CHARLES E III
IPC: H03G3/20
Filed: 1991-11-27
Granted: 2002-01-22
Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit (18) for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit (18) is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit (20) is coupled to the amplifier means (18) for measuring logarithmic sig-nal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit (22) is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit (22) integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.
Patent CA-2094274-C (CA)
Title: Miniature shock absorber
Inventor: HEIDEMAN ROBERT J
IPC: F16F9/00
Filed: 1991-10-30
Granted: 1995-04-18
Abstract: A shock absorber including an outer tubular housing (10), an inner tubular housing (12) positioned within the outer tubular housing to define a pressure chamber (24) within the inner housing and an annular accumulator chamber (26) between the housings, a piston (44) in the inner housing, and a piston rod (42) extending out of the front end of the tubular housings. A needle valve (20) is threaded into the rear end of the shock absorber for adjustable coaction with a passage (18b, 18h, 18g) at the rear end of the pressure chamber to vary the resistance to an impacting object (74).  Return flow of fluid to the pressure chamber occurs through a port (12c) in the inner housing coacting with an annular passage (52) defined between the piston and a reduced diameter portion (42c) of the piston rod. A stop collar (10d) forming an integral front end portion of the outer tubular housing precludes bottoming of the piston and provides precise positioning for the impacting object.
Patent CA-2102903-C (CA)
Title: Device and system for sterilizing objects
Inventor: HILLEBRENNER H WILLIAM
IPC: A61B1/12
Filed: 1993-02-25
Granted: 1998-11-10
Abstract: A system for sterilizing an object comprising a hollow cassette for containing t he object, a sealable opening in the cassette for ingress and egress of the object, sealing means for forming a fluid-tight se al around the opening, input and output ports in the cassette for receiving and exhausting a sterilizing fluid and a sealing check va lve in the input and output ports for providing a fluid-tight seal when no connections are made to the input and output ports such that when the object is sterilized within the cassette, the cassette will maintain a sterilized atmosphere for the object unti l the cassette is opened to allow use of the object.
Patent CA-2104695-C (CA)
Title: Method for regaining mud circulation in operating well and device for its embodiment
Inventor: EFIMKIN ALEXEI ALEXEEVICH
IPC: E21B37/00
Filed: 1992-12-01
Granted: 2002-09-17
Abstract: Run into a well, e.g. in a tubing (1), on a pipe string (2) is a hydromechanical cleaner (3). A bridge (4) is washed out by direct descending flow of drilling mud pumped through the pipe string (2). The cleaner (3) is moved downward as the bridge (4) is washed out by moving the pipe string (2). The ascending flow of drilling mud rotates the cleaning heads (5 and 6) in opposite directions. Cutting knives (7) of the cleaning heads (5 and 6) mechanically remove deposits from walls of the tubing (1). The deposits from the walls are removed mechanically during running the cleaner (3) into the well and curing its lifting from the well. Products of the washed out bridge (4) and deposits are removed from the well by ascending flow through a side branch pipe (41) of a wellhead circulating head (18). The device for use in the method includes also a mechanism for moving the pipe string (2) and a pump unit.
Patent CA-2109485-C (CA)
Inventor: PINGIOTTI ERCOLANO
IPC: E03C1/308
Filed: 1993-10-28
Granted: 1998-09-22
Abstract: A drain flushing device for allowing a user to unclog a drain in either of two modes. The user is given the option to either use the device as a liquid column guide or as a pump. A drain flushing device in accordance with a first embodiment of the present invention. The drain flushing device has a substantially cylindrical body and a piston element adapted to reciprocate inside the cylinder. The cylinder has a lower discharge aperture and an upper aperture with a upper peripheral rim. A substantially funnel-shaped liquid guide extends integrally from the cylindrical body adjacent its upper aperture. The funnel shaped liquid guide has a peripheral wall which merges into the cylindrical body at a peripheral junction position located underneath the upper peripheral rim of the aperture. The guide and the upper portion of the cylinder thus define a substantially annular cavity positioned peripherally around the upper portion of the cylinder into which a liquid can be poured.