baber/WOPTO huggingface dataset:
Patent CA-2035477-C (CA)
Inventor: HENNEUSE HENRY
IPC: E21B47/12
Filed: 1990-06-26
Granted: 1995-03-07
Abstract: Dispositif de mesure dynamométrique pour tige de forage tournante, incluant des capteurs disposés à l'intérieur d'une gorge de la tige, chacune de ces capteurs transmettant des signaux de mesure sur une voie de mesure. Un premier circuit électronique est solidaire de la tige de forage tournante pour le conditionnement des signaux fournis par les différents capteurs. Un ensemble collecteur tournant balais fixes est prévu pour transmettre les signaux du premier circuit électronique à une partie fixe, la traversée de ces signaux de l'ensemble collecteur-balais s'effectuant à courant nul. Un deuxième circuit électronique est monté sur la partie fixe, ce deuxième circuit électronique comprenant, en aval de l'ensemble collecteur-balais, un étage d'amplificateurs suiveurs à très haute impédance d'entrée, et en aval de chaque amplificateur suiveur de chaque voie, un circuit de séparation de la composante statique et un circuit de séparation de la composante dynamique du signal.
Patent CA-2036757-C (CA)
Title: Traveling wave type transversal equalizer
Inventor: KASPER BRYON L
IPC: H03H15/00
Filed: 1991-02-20
Granted: 1995-08-15
Abstract: A transversal equalizer is realized by employing variable gain and delay in the amplification branches of a traveling wave amplifier. Specifically, by adjusting the gain and delay in each branch, the traveling wave type transversal equalizer may be adjusted to have a complementary frequency response in order to compensate for linear channel gain and phase ripples. This approach permits the transversal equalizer to be designed without the use of resistive splitter and combiner networks and, therefore, without the use of high gain amplifiers. Without such amplifiers, splitters and combiners, the smaller physical size, which is afforded thereby, allows the transversal equalizer to be easily assembled as a hybrid integrated circuit.
Patent CA-2037857-C (CA)
Title: Prevention of determination of time of execution of predetermined data processing routine in relation to occurrence of prior observable external event
Inventor: GRIFFIN ROY ALLEN III
IPC: G07F7/10
Filed: 1991-03-08
Granted: 2001-01-16
Abstract: Compromise of a predetermined secure data processing routine by a procedure known as a "clock attack" is prevented by a method that inhibits synchronization with externally generated instructions by preventing determination of the time of execution of the predetermined data processing routine in relation to occurrence of an externally observable event that precedes the execution of the predetermined routine. The method includes the step of (a) randomly varying the duration between the occurrence of the externally observable event and the execution of the predetermined routine.  Step (a) includes the steps of (b) executing one or more interim data processing routines between the occurrence of the externally observable event and the execution of the predetermined routine; and (c) randomly varying the duration of said interim routines. Steps (b) and (c) may include the step of (d) randomly assembling m said interim routines for said execution from a group of n stored routines having different durations, wherein m and n are integers, with n being greater than m. Step (d) may include either the step of (e) randomly accessing said m interim routines from a secure memory; or the steps of (f) randomly accessing pointers for said m interim routines from a secure memory;  and (g) accessing said m interim routines from a memory in response to said pointers.  Step (c) includes the step of (h) randomly varying the duration of the interim routines in response to dynamically processed data that does not repetitively recur each time said interim routines are accessed. The method further includes the steps of (i) monitoring said interim routines to detect whether said interim routines are being tampered with; and (j) preventing the execution of said predetermined routine in response to detecting that said interim routines are being tampered with.
Patent CA-2048671-C (CA)
Inventor: GONDARD CHRISTIAN
IPC: C08K5/57
Filed: 1990-12-28
Granted: 1998-01-06
Abstract: Méthode de réticulation de (co)polymères chlorés par réaction desdits (co)polymères à une température variant entre 50 et 230 degrés C en l'absence d'un solvant avec un dérivé organométallique de type amino de l'étain, du plomb, de l'antimoine ou du bismuth; compositions réticulables et objets ainsi formés.
Patent CA-2049423-C (CA)
Title: Tempering system for storage tank water heaters
Inventor: PERLMAN MAIER
IPC: F24H1/18
Filed: 1991-08-16
Granted: 1994-02-01
Abstract: ABSTRACT OF THE DISCLOSURE           A fluid tempering system for use with a standard water heater storage tank includes a heat exchanger which is interposed between the outlet means for conveying heated fluid from the storage tank to a distribution system and the cold fluid inlet means, so that heat energy is transferred between heated fluid exiting and cold water entering the storage tank.  Preferably, the  heat  exchange  is  complete  and water exiting the  heat exchanger in both the inlet and outlet conduits are of about equal temperature.  In order to avoid the water exiting the water heater to the distribution system becoming too tepid, a bypass conduit either in the inlet means or in the outlet means may be provided triggered by a bypass valve located in the outlet conduit.  As a safety feature, a safety shut-off valve is located in  the  outlet  conduit  before  the  distribution  system  to automatically shut-off the conduit where water exiting the system is above a desired maximum temperature.   In this system, the water  in  the  water  storage  tank may  be  kept  at  scalding temperatures since it will be tempered on leaving the storage tank before entering the water distribution system to avoid scalding the user.
Patent CA-2051663-C (CA)
Inventor: VACANTI JOSEPH P
IPC: A61K35/12
Filed: 1990-04-16
Granted: 1996-08-06
Abstract: Methods and artificial matrices for the growth and implantation of cartilaginous structures and surfaces and bone are dis-closed. In the preferred embodiments, chondrocytes are grown on biodegradable, biocompatible fibrous polymeric matrices. Op-tionally, the cells are proliferated in vitro until an adequate cell volume and density has developed for the cells to survive and pro-liferate in vivo. One advantage of the matrices is that they can be cast or molded into a desired shape, on an individual basis, so that the final product closely resembles a patient's own ear or nose, Alternatively, flexible matrices can be used which can be ma-nipulated at the time of implantation, as in a joint followed by remodeling through cell growth and proliferation in vivo. The cul-tured cells can also be maintained on the matrix in a nutrient media for production of bioactive molecules such as angiogenesis inhibiting factor, Examples are provided showing the growth of hyaline cartilage for joint relinings, the growth of elastic cartia-lage for plastic or reconstructive replacement of cartilage structures, and repair of large bone defects.
Patent CA-2054490-C (CA)
Title: Particle level sensor
Inventor: JACK J STEWART
IPC: D21C7/12
Filed: 1991-10-29
Granted: 1996-02-20
Abstract: A sensor  for the  detection of wood chip level in a digester,  for example,  a Kamyr digester, which consists of:  (a) a probe, several meters long, vertically  mounted  inside  the  top  part  of  the digester;   (b) a series of bare metal electrodes in the side of the probe,  spaced typically a few centi-metres apart,   and electrically insulated from the probe wall;   (c)  electronic  circuit processing to allow any pair of electrodes to be selected,  and (c) a  means  to  allow the  electrical  properties  of  a liquor or wood chip and liquor mixture between the electrodes of a pair to be measured,  and the level deduced from the measurement.
Patent CA-2059612-C (CA)
Title: Liquid jetting device having a mechanism for introducing a bubble into a liquid chamber and recording apparatus using the device
Inventor: YANO KENTARO
IPC: B41J2/14
Filed: 1992-01-17
Granted: 2002-10-08
Abstract: Delay of refilling to be conducted immediately after the first discharge in the continuous discharge can be restricted.      Adequate air bubbles which do not adversely affect discharge can be formed by means of the air bubble forming unit, such as a sub-heater for heating the ink in the ink reservoir portion, such as a common liquid chamber. The formed air bubbles function as the buffers and thereby absorb the discharge energy (pressure waves) directed toward the common liquid chamber during discharge to restrict flow of the ink in the direction opposite to the discharge port. That is, refilling after discharge can be quickly performed.
Patent CA-2061147-C (CA)
Title: Method of starting a plant for the production of pig iron or steel pre-material as well as arrangement for carrying out the method
Inventor: BOGDAN VULETIC
IPC: C21B13/14
Filed: 1992-02-13
Granted: 1997-08-26
Abstract: There is disclosed a method of starting a plant for the production of pig iron or steel pre-material including  a  direct-reduction  shaft  furnace  and  a meltdown gasifier.        - At first the still empty meltdown gasifier is heated up by aid of a combustible gas and the smoke gases forming  are   introduced   into  the  still   empty direct-reduction shaft furnace.        - Coke or a degassed coal product is charged into the direct-reduction shaft furnace and the smoke gases introduced into the direct-reduction shaft  furnace are passed through the  coke or  the degassed coal product by releasing their sensible heat.        - The coke or the degassed coal  product thereby  is heated to ignition temperature and is charged into the meltdown gasifier in the hot state, catching fire upon the injection of an oxygen-containing gas or of oxygen.        - A further coal or coke bed serving for gasification is charged on the ignited bed of coke or degassed coal product and the charging substances are charged into the direct-reduction shaft furnace.
Patent CA-2061603-C (CA)
Inventor: MIYAZAKI SHINICHI
IPC: H04B1/16
Filed: 1992-02-20
Granted: 1997-04-01
Abstract: In a radio receiver for receiving a particular radio signal of a particular frequency with an electric field strength among a plurality of radio signals of different frequencies, a temperature detector (31, 32) produces a detected temperature signal representative of an ambient temperature of the radio receiver.  A correcting signal producing unit (33) produces a correcting signal representative of a control value determined by the detected temperature signal and a particular control signal produced by a frequency controller (11) to indicate a local frequency for the particular frequency.  A correcting unit (34) corrects, according to the correcting signal, an electric field strength signal which is produced by an electric field strength detector (13) to represent the electric field strength detected in a detected signal produced by a detector (12) by detecting the particular radio signal in response to the particular control signal.
Patent CA-2062805-C (CA)
Title: Adhesive dressings
Inventor: RAWLINGS DAVID ALAN
IPC: A61L15/22
Filed: 1990-08-01
Granted: 2001-10-02
Abstract: A conformable dressing such as a first-aid dressing or a ward dressing comprises a polymeric foam absorbent layer (2) having a liquid impervious moisture vapour permeable backing layer (3) and on the body facing surface, a discontinuous layer of adhesive (4), the thickness of the absorbent layer at the margins (22) of the dressing being substantially less than that of the layer between the margins (21). The adhesive may be applied directly to the foam or may be applied to an intermediate discontinuous layer (5) such as a polymer net which itself is laminated or bonded to the foam absorbent layer.
Patent CA-2066501-C (CA)
Inventor: MURATA KAZUHIKO
IPC: C08L23/06
Filed: 1992-04-21
Granted: 1998-12-01
Abstract: According to the present invention, there is provided a thermoplastic elastomer laminate which comprises a layer comprising a thermoplastic elastomer (A) composed of a crystalline polyolefin and a rubber, and a layer comprising an ultra-high molecular weight polyolefin (B) or an ultra-high molecular weight polyolefin composition.     In addition, a glass run channel composed of the thermoplastic elastomer laminate is also provided in the invention.
Patent CA-2067106-C (CA)
Title: Metering device for liquids
Inventor: DROBISH JAMES L
IPC: G01F11/26
Filed: 1990-11-26
Granted: 1995-06-20
Abstract: The invention relates to a tubular metering device for use with a til-table supply container having a supplementary trap which fills as a main trap dispenses. The problem associated with supplementary traps em-ployed in tiltable containers is that the contents of the supplementary trap often contaminates the main trap during dispensation thus reducing metering accuracy. A trap container having an upper portion (13) divided into a dispensing passage (22) and a metering chamber (20) by a vertical wall (18), and having a lower portion (14b, 15) which forms an undivided collecting chamber (21). The metering chamber (20) has axially spaced inlet opening (27) and vent opening (28). The metering chamber (20) is partially segregated from the collecting chambers (21) by a baffle (25) protruding from the vertical wall (18). This baffle (25) ensures accurate operation of the dispensing device and reduces its necessary volume and length.
Patent CA-2069881-C (CA)
Title: Electrical control system for electrostatic precipitator
Inventor: JOHNSTON DAVID F
IPC: B03C3/68
Filed: 1990-06-29
Granted: 1996-11-26
Abstract: Form factor measurement and fault detection equipment to determine proper sizing of electrical components and efficien-cy of an electrostatic precipitator (22) by calculating a system form factor from either primary voltage or current. A power source (10) connects serially to an inverse parallel SCR 1 and SCR 2, to a current limiting reactor (16), and to a T/R set comprising a transformer (18) and rectifier (20) which supply power to precipitator (22). A current transformer (26) senses input current be-tween the reactor (16) and T/R set (18, 20) to signal an input scaling and signal conditioner (28) connected to a current meter (34), a voltage meter (39) and a computer (40) having a display monitor (42). The computer (40) is also connected to an SCR con-trol circuit (24) of SCR 1 and SCR 2. The appropriate electrical characteristic is converted to both its RMS value and average va-lue and then sent to the computer (40). The computer (40) divides the RMS value by the average value and sends the resulting form factor value to the display (42). If system form factor value is not sufficiently close to the purely resistive circuit value of 1.11, then equipment resizing is needed to increase system efficiency. Additionally, secondary electrical characteristics are used to calculate fractional conduction. If the fractional conduction is not sufficiently close to a desired level, equipment adjustments are made to increase system efficiency.
Patent CA-2071720-C (CA)
Title: Method of and an apparatus for producing wire
Inventor: KURODA KOUICHI
IPC: B21B1/18
Filed: 1992-06-19
Granted: 1996-02-06
Abstract: A method of and an apparatus for rolling a rod as a starting material and producing a wire of 5mm or smaller diameter, the method and apparatus using a continuous rolling mill comprising a plurality of round-grooved four-roll stands arranged in tandem, wherein the grooved four-roll is displaced between adjacent rolling stands by 45 degrees relative to each other around the pass line and the center-to-center distance between adjacent rolling stands measured in the pass line direction is not greater than 50 times the diameter of the rod.  The front end portion of the rod is fed at slow speed into the continuous rolling mill, the front end portion being guided by a front pipe to the center of the round groove, and the front end portion is wound on a coiler.  After that, the rotation speed of the grooved rolls in each rolling stand is so set as to prevent slack in the rod passing through the continuous rolling mill, and the rod is rolled at high speed, without causing the rod to touch the leading pipe, to produce a wire.  Each of the rolling stands that constitute the continuous rolling mill is movable in a direction perpendicular to the pass line, each rolling stand being moved for connection to or disconnection from the driving source.
Patent CA-2075570-C (CA)
Title: Mail handling machine with improved envelope flap opening means
Inventor: HOLBROOK RUSSELL W
IPC: B43M5/04
Filed: 1992-08-07
Granted: 2000-05-23
Abstract: A mail handling machine includes a mechanism for serially transporting along a main path sealed and unsealed close-flapped envelopes, some of which may be mis-sealed.      The machine also includes a mechanism for opening the flaps of the unsealed close-flapped envelopes. The flap opening mechanism includes a shaped blade pivotally mounted on the machine and located along the main path. There is also a shaped portion of a deck that includes a fixed guide edge located along the path and downstream of the blade. The blade strips open the flaps of the unsealed envelopes. A member is hingedly mounted to the trailing edge of the blade. The member is biased so as to obstruct the gap between the blade and the guide edge to prevent opened flaps from entering the gap.      When a mis-sealed envelope engages the blade, causing the blade to move pivotally, the shaped portion cams up the member, which contacts the mis-sealed envelope and urges it out of engagement with the blade.
Patent CA-2080059-C (CA)
Title: Cooperating combination of a gland and a grip ring installed in restrained sealed bolted joints of fluid piping systems including both plastic pipe and metallic pipe
Inventor: DENT LARRY G
IPC: F16L21/04
Filed: 1992-10-07
Granted: 1996-08-06
Abstract: A cooperating combination of a metallic gland and a metallic grip ring is made to be effective in respect to both plastic pipe and metallic pipe used in fluid piping systems, which are primarily water and sewer piping systems, where these pipes are part of assembled restrained sealed bolted joints.  The grip ring, in one embodiment, has an internal diameter surface structure having at least two well spaced major size pipe  gripping circumferential teeth.  In another embodiment, the grip ring, in addition to the major teeth, has several spaced minor sized pipe gripping circumferential teeth located between and beyond the major sized teeth.  In reference to the embodiment having both sizes of teeth, when the installed grip ring is restraining a metallic pipe to keep it in a sealed bolted joint, only the well spaced major size pipe gripping circumferential teeth are, in part, penetrating the metallic pipe.  When this installed grip ring is restraining a plastic pipe to keep it in a sealed bolted joint, both the major size pipe gripping circumferential teeth and the minor size pipe gripping circumferential teeth are penetrating the plastic pipe.  The metallic grip ring has a radial open through slot to accommodate the subsequent reduction of the internal diameter thereof when the grip ring is in place.     In respect to plastic pipe, when the radial open through slot is closed, the gasket hag been sealed, all the pipe gripping circumferential teeth, both major size and minor size, are penetrating the plastic pipe, which is not over-stressed and which will remain in the sealed bolted joint.  The major size teeth are well spaced and fewer in number so they will successfully penetrate metallic pipe, which takes a lot of concentrated force, which is created when the fasteners of the bolted joint are tightened.  The minor size teeth, which are closer together, are needed to provide more tooth contact area to spread out the restraining forces needed to hold the relatively weaker plastic pipes within their respective restrained sealed bolted joints.  In respect to restraining metallic pipe, if minor size teeth are on the metallic grip ring, they always remain clear of the metallic pipe.
Patent CA-2080813-C (CA)
Title: Method and apparatus for continuously measuring volumetric flow
Inventor: MCKOWN RUSSELL C
IPC: A61B5/0275
Filed: 1991-04-18
Granted: 1996-10-01
Abstract: Method  and  apparatus  (FIG.  15)  for  adapting  the volumetric flow rate measurement system taught by Yelderman in U.S. patent no. 4,507,974 to clinical environments by reducing the effects of physiological noise.  Signal processing techniques are used to characterize the background noise power spectrum of the system under test so that the effect of noise aberrations on the measured data may be eliminated and so that the predominant periodicities of the background noise spectra may be avoided. The invention further cross-correlates the input data of the system with the corresponding output data of the system to determine weighting values for each input frequency so that data collected at noisy frequencies is discounted.   Low frequency noise or drift is also removed from the output signal by fitting the average of the output data to a quadratic function which is then subtracted from the original output signal, point by point. Finally,  the  processed  data  is  fit  to  a  lagged  normal distribution curve in the frequency domain to solve for the parameters  necessary  to  mathematically  model  the  transfer function of the system.  Given the input to the system as well as the frequency domain transfer function and noise data of the system, the volumetric flow of the system then may be determined for virtually any input even in very noisy environments.
Patent CA-2081241-C (CA)
Title: Device for winding webs of material onto winding shafts
Inventor: KAMMANN ROLF
IPC: B65H19/22
Filed: 1992-10-23
Granted: 2002-03-19
Abstract: A device for winding webs of material onto winding shafts comprises a movable bearing supporting a winding shaft during winding, through which the supply roll being formed can be moved towards a contact roller and which can be moved in a position away therefrom for the removal of the completely wound supply roll. A new winding shaft accelerated approximately up to the speed of the web and onto which the leading end of the web formed by a severance cut can be wound, is inserted in the movable bearings by a means. In order to prevent the supply roll with its increasing weight from being supported completely on the contact roller, which may cause damage to the web, the movable bearing is provided. The bearing comprises pairs of holding means each pair of which can be moved synchronously with the other pair and also independently thereof. The pairs are adapted to hold a supply roll jointly as well as to hold individually a completely wound supply roll or a winding shaft with the leading end of the web wound thereon.