baber/WOPTO huggingface dataset:
Patent CA-2039656-C (CA)
Title: Change-over valve with automatic resetting
Inventor: HOCHSTRASSER FERDINAND
IPC: F16K11/044
Filed: 1991-04-03
Granted: 1994-11-01
Abstract: INVENTOR:   FERDINAND HOCHSTRASSER          INVENTION:  CHANGE-OVER VALVE WITH AUTOMATIC RESETTING                 ABSTRACT OF THE DISCLOSURE             Water supplied from a mixing faucet or combination set via an inflow chamber to a change-over valve effects by impact pressure that a double-sided valve member - as a result of an asymmetrical arrangement between a first valve seat and a second valve seat - moves to the first valve seat, thereby blocking the supply to a shower outlet. Therefore, the water is conducted via the second valve seat into a bath-tub outlet. By actuating a draw-button, the double-sided valve member is reversed in order to block the bath-tub outlet and release the shower outlet. Impact pressure now effects self-locking in this position. When the water is turned off and impact pressure no longer prevails, the two-sided valve member thereupon moves into an inoperative position by the force of two mutually counteracting springs. The conduit leading to the shower is automatically emptied by means of an annular gap remaining between the first valve seat and the double-sided valve member. It is thus precluded that bacteria can multiply or be reproduced in standing water.
Patent CA-2040421-C (CA)
Title: Method and apparatus for keyboard adaptation to a low power controller in a coin operated telephone
Inventor: MCGARRY PATRICK J
IPC: H04M17/00
Filed: 1990-09-10
Granted: 1995-07-11
Abstract: A standard keyboard or keypad  (14)  for a coin operated telephone (2)  is connected to balance  an artificial line (43) rather than the actual phone line.   The artificial line  (43) simulates operating conditions at the end of the loop regardless of whether the phone that the keyboard is in is actually near or far from the central office  (4).   As a result,  the standard keyboard  (14)  can be operated using a current at or near its designed   minimum   operating   current.      Additionally,   a microcontroller (110) for controlling the operation and decoding of the keyboard (14) is programmed to have a small duty cycle of on time during decoding so that the bulk of the power normally used by the microcontroller (110) can be switched to the keyboard (14) when it is detected that a key is depressed.  Thus, a line powered low power controller (3) can be used in conjunction with a standard keyboard  (14).  By reducing the number of lines used to connect the standard keyboard (14) to the controller, an extra line is made available which allows the controller to be utilized with either a standard or a modified keyboard (14').
Patent CA-2041874-C (CA)
Title: Separation of ethane from methane by pressure swing adsorption
Inventor: MAURER RICHARD T
IPC: C07C7/13
Filed: 1991-05-06
Granted: 1999-04-06
Abstract: Ethane is separated from a methane- and ethane-containing feedstream using pressure-swing adsorption wherein the adsorbent is a faujasite type of zeolitic aluminosilicate containing (1) at least 20 equivalent % of a cation selected from zinc, a rare earth metal, hydrogen, ammonium or calcium, and (2) not more than 80 equivalent percent of an alkali metal or alkaline earth metal cation other than calcium.
Patent CA-2048491-C (CA)
Title: Compatible digital processing unit for teletext and control method thereof
Inventor: SEO MOON HWAN
IPC: H04N1/00
Filed: 1991-08-06
Granted: 1999-02-16
Abstract: The present invention relates to teletext, in which the character  multiplex  signals of the  international   title  standard transmitted during  vertical  returning  periods  in  21H  line  can  be processed together  with those of  the North America  teletext  standard simultaneously by  the compatible digital  processing unit for  teletext and method thereof  in such a  manner that timing clocks and byte clocks are generated if  the character multiplex  signals of the  international title standard are  provided, in order  to store the character multiplex signals in the programmable RAM in  synchronization with the  generated clocks and to  generate the interrupt  request signals at the same time. therefore, the signals  transmitted in the  international title standard are compatibly converted  into  those  in  the  North  America  teletext standard according the interrupt request signals.
Patent CA-2049070-C (CA)
Title: Angular paving stone for paving areas
Inventor: VON LANGSDORFF FRITZ
IPC: E01C9/00
Filed: 1990-04-03
Granted: 1999-12-07
Abstract: The invention concerns an angled paving stone (2) with two outer edges (16), two inner edges (18) and two front edges (20). At the five outside corners (4) of the paving stone (2) are quarter-recesses (22). At the centre of the outer edges (16) are half-recesses (24). At the inner corner (6) of the paving stone (2) is a three-quarter recess (26). The recesses (22, 24, 26) fit together when the paving stones are laid to form full recesses (38) which allow water to drain off.
Patent CA-2049332-C (CA)
Inventor: EATWELL GRAHAM PAUL
IPC: F16F15/02
Filed: 1990-04-20
Granted: 2000-08-01
Abstract: Un système de contrôle de son ou de vibration pour compenser le bruit ou les vibrations provenant d'une source périodique de périodicité variable comprend des détecteurs (6) qui détectent ledit bruit et lesdites vibrations. Un CAN (8), actionné par la sortie de signaux provenant d'un détecteur (3) qui détermine la position de la source dans son cycle, prélève des échantillons desdits signaux plusieurs fois par cycle. Les échantillons prélevés sont transformés en valeurs de signaux d'entraînement pour actionneurs de compensation, la transformation étant accomplie par une série de modules de transformation et d'adaptation (11 à 13, 15) à base d'algorithmes réalisés en fonction de la fréquence de la source. Les valeurs des signaux d'entraînement sont emmagasinées dans une mémoire (1) mise à jour continuellement en fonction des valeurs provenant des signaux échantillonnés du détecteur.
Patent CA-2049459-C (CA)
Inventor: STEDRONSKY ERWIN R
IPC: B01D67/00
Filed: 1991-08-19
Granted: 1998-02-03
Abstract: Surface modified support membranes and a process therefor are disclosed wherein the support membrane has a substantially uniform layer of hydrogel deposited on essentially the entire surface area thereof.
Patent CA-2051520-C (CA)
Title: Use of folic acid and its derivatives for reducing the toxicity of gar-transformylase inhibitors
Inventor: GRINDEY GERALD BURR
IPC: A61K31/505
Filed: 1991-09-17
Granted: 2003-02-18
Abstract: Administration of a folate binding protein binding agent in conjunction with use of an antitumor agent which is an inhibitor of glycinamide ribonucleotide transformylase or other antifolate reduces the toxic effects of such agent and provides an enhanced therapeutic index.
Patent CA-2053921-C (CA)
Title: Synthetic peptides for an hiv-1 vaccine
Inventor: SIA DWO Y C
IPC: C07K19/00
Filed: 1990-05-03
Granted: 1999-07-20
Abstract: The  invention  discloses  the  identification, characterisation  and  use  of  a  synthetic  peptide, GPKEPFRDYVDRFYK  (p24E),  as  a T-cell carrier for the appropriate assembly,  with defined B-cell epitopes of the HIV-1  envelope protein,  for the construction of potential synthetic vaccine candidates against HIV.
Patent CA-2054985-C (CA)
Title: Device for dynamically measuring bubble content of flowing liquid
Inventor: YANO HISASHI
IPC: F01N3/28
Filed: 1991-11-05
Granted: 1997-12-23
Abstract: A device for dynamically measuring the bubble content of a flowing liquid is arranged in a conveyance passage for a flowing  liquid  or  provided  in  a  simple  bypass  for  the conveyance passage of the liquid so that the bubble content of the flowing liquid and the bubble quantity of dissolved gas in the flowing liquid can be dynamically measured due to a change in the pressure of the liquid in the passage or the bypass without extracting any of the liquid therefrom.
Patent CA-2057400-C (CA)
Title: A clock buffer with adjustable delay and fixed duty cycle output
Inventor: TRAN THANH T
IPC: G06F1/12
Filed: 1991-12-11
Granted: 2001-03-13
Abstract: A clock buffer circuit for a computer system, and a computer system incorporating the same, are disclosed. The clock buffer circuit includes a differential input buffer for receiving the input clock signal, with its output coupled to the input of a phase locked loop (PLL). The switching level of the differential input buffer is adjustable, either by adjusting the DC bias applied to the input clock signal, or by adjusting the reference signal, which changes the point in the cycle of the input clock signal at which the differential buffer switches. The PLL synchronizes its output to an edge of the output of the differential buffer, but maintains the same duty cycle (e. g., 50%). Accordingly, the clock buffer circuit may have its delay adjusted, by modifying a voltage divider, applying a variable voltage, or programmably via a digital-to-analog converter, to match the delays of other clock buffer circuits in the computer system, reducing the clock skew in the system. A sine wave may be used as the input cloak signal, so that harmonic noise is reduced in the system.
Patent CA-2059757-C (CA)
Title: Rotary engine
Inventor: BELANGER J ROBERT
IPC: F01C3/02
Filed: 1992-01-21
Granted: 1994-04-12
Abstract: ABSTRACT OF THE DISCLOSURE           An internal combustion engine composed of separate compression and combustion/expansion chambers linked by a transfer duct, is disclosed.  The compressor and expansion chambers include similarly shaped rotors and abutments.  Each of the rotors includes a vane, and the rotors and abutments are rotationally coupled such that the vane enters into operative engagement with the associated abutment once during each revolution of the rotor.  Each abutment consists of a rotating disk having a gap permits passage of the vane through the abutment.
Patent CA-2064820-C (CA)
Title: System with compact spectrum
Inventor: OWEN JEFFREY ROBERT
IPC: H04H20/34
Filed: 1990-06-07
Granted: 2000-06-06
Abstract: The present invention provides a technique and system for modifying the modulation of the 66.5 kHz subcarrier in such a way that its spectrum will not overlap that required by the 57 kHz subcarrier, while at the same time maintaining compatibility with existing subcarrier receivers. A special signal is created whose spectral shape is asymmetrical with respect to the 66.5 kHz subcarrier. In the frequency domain, the lowest frequency part of the symmetrical spectrum is cut off, flipped about the carrier frequency and then added to the highest frequency part of the spectrum. This technique and system takes advantage of the fact that the receiver (22) uses a sampling process (24) which produces frequency aliasing. The spectral shape produced at the transmitter is such that the aliasing caused by sampling in the receiver (22) results in the lower-than-carrier and higher-than-carrier portions of the spectrum being added together, producing the receiver (22) a symmetrical spectrum.
Patent CA-2070430-C (CA)
Inventor: SALAMA FOUAD A
IPC: A61F2/958
Filed: 1991-09-03
Granted: 1995-11-07
Abstract: A urine tube (12) extends through a balloon (26) which is inflatable in the neck of a bladder (38) to form a seal around the urine tube (12). The balloon (26) has a shape corresponding to the shape of the bladder chamber at the urethra or-ifice (38) to facilitate establishing a seal. A valve (14) is provided on the outlet end (15) of the urine tube (12) and an air tube (20) extends along the substantial length of the urine tube (12) into the balloon (26). A hypodermic syringe (48) or the like may be inserted into the inlet end (22) of the air tube (20) for inflating the balloon (26). A hydrogel collar (36) is positioned around the urine tube (12) against the body (40) at the outlet end of the urethra to hold the balloon (26) in tight engagement with the bladder neck (38) at the urethra orifice.
Patent CA-2075686-C (CA)
Title: Stack type evaporator
Inventor: OKUDA NOBUYUKI
IPC: F28D1/03
Filed: 1992-08-10
Granted: 2003-02-11
Abstract: A stack type evaporator comprises tubular elements 1 each having a plurality of inwardly protruding recessed ribs 7 which extend from an upper header portion 1a of the element to a lower header portion 1b, with the ribs serving as straight drain canals 7a. A hydrophilic resin coating of a specific composition covers the outer surfaces of the tubular elements 1 and fins 2 each interposed between two adjacent tubular elements. The combination of straight drain canals with the specific hydrophilic resin coating is effective to facilitate the drainage of condensed water so that the waterdrops are perfectly prevented from flying out of the evaporator, and that any stinking mold or mildew is not permitted to grow within a reduced amount of remaining adherent water. Also, the hydrophilic coating itself does not emit any unpleasant smell which has been inevitable to the prior art water glass coating, thus an air-conditioned environment always remains comfortable.
Patent CA-2086615-C (CA)
Title: Disazo compounds, method for preparing them and their use as dyes
Inventor: SPRINGER HARTMUT
IPC: C09B62/513
Filed: 1991-06-27
Granted: 1996-01-23
Abstract: Disazo compounds which possess fiber-reactive groups and have useful dye properties and are capable of dyeing hydroxyl-and/or carboxamido-containing materials, in particular fiber materials, such as cellulose fibers and natural and synthetic polyamide, such as wool, in strong, fast shades.  They conform to the formula                  (1) where Me is hydrogen or an alkali metal;          K1 is a radical of the formula   and K2 is a radical of the formula   where Me has one of the abovementioned meanings, and n is zero or 1, if zero, this group being hydrogen;          D1 and D2 are each a group of the formula (3a), (3b) or (3c)             (3a)            (3b)                           (3c) where Me has one of the abovementioned meanings, R1 is hydrogen, alkyl of from 1 to 4 carbon atoms, which may be sulfo-, carboxyl- or sulfato-substituted, alkoxy of from 1 to 4 carbon atoms, which may be sulfo-, carboxyl- or sulfato-substituted, chlorine, bromine, hydroxyl, cyano, carboxyl or sulfo, R2 is hydrogen, alkyl of from 1 to 4 carbon atoms or alkoxy of from 1 to 4 carbon atoms, Y  is vinyl, or ethyl which contains in the .beta.-position a substituent which is eliminable by alkali, and m  is zero, 1 or 2 (if zero, this group being hydrogen).
Patent CA-2089236-C (CA)
Title: Femoral member of a hip joint endoprosthesis
Inventor: VECSEI VILMOS
IPC: A61F2/36
Filed: 1993-02-10
Granted: 1999-06-01
Abstract: A femoral member of a hip joint endoprosthesis, comprising a shaft having a medial and lateral side which both are arcuately rounded in cross-section and having a proximal portion which is provided with openings connecting the dorsal side with the ventral side, wherein the diameter of the openings normal with the respect to the shaft axis decreases  from proximal to distal,  whereby the distal shaft portion is formed approximately straight, that at least the openings adjacent the proximal shaft end are formed as approximately parallel elongated holes, which longer axis extends under an angle to the axis of the distal shaft portion approximately vertical with respect to the medial side proximally slightly curved..
Patent CA-2093245-C (CA)
Title: Pilfer proof container
Inventor: BALLARD JEFFREY ARTHUR
IPC: B65D5/43
Filed: 1993-04-02
Granted: 1996-03-26
Abstract: A pilfer proof container made from a one piece die cut which is folded into the container which has a generally rectangular configuration with the lid locked into position by way of a locking arrangement between a score or opening in the front panel of the container and a flange member coupled to the lid.
Patent CA-2094707-C (CA)
Title: Multivariable adaptive feedforward controller
Inventor: BRISTOL EDGAR H
IPC: G05B13/02
Filed: 1992-08-26
Granted: 2003-01-21
Abstract: Multivariable adaptive feedforward control may be accomplished by detecting the beginning and ending of a process con-trol disturbance response, characterizing the measured inputs and process output during the disturbance by moments, which com-prise time-weighted integrals performed on the process result output and inputs when the disturbance is a measured disturbance, and relating the characterized inputs and process result output in known general transfer function model equations to generate transfer function parameters which are used to calculate the coefficients of feedforward additive or multiplicative compensators.
Patent CA-2101359-C (CA)
Title: Inhibiting polymerization of vinyl aromatic monomers
Inventor: WINTER ROLAND A E
IPC: C07C7/20
Filed: 1993-07-27
Granted: 2001-03-20
Abstract: The polymerization of a vinyl aromatic compound, such as styrene, during distillation or purification is very effectively inhibited by the presence of at least one stable nitroxyl compound together with at least one aromatic nitro compound.
Patent CA-2108219-C (CA)
Title: Theft-deterrent device providing force-sensitive tamper detection
Inventor: THURMOND ROBERT C
IPC: E05B39/00
Filed: 1993-10-12
Granted: 2001-12-11
Abstract: A pin-and-clutch theft-deterrent device that enables instantaneous detection of separation-force tampering with the theft-deterrent device. The device includes a pin in one component and a clutch assembly in a second component for attaching the device to an article to be protected by grasping the pin with the clutch to provide a predetermined retaining force for resisting separation of the components by prying or pulling the components apart; a force-sensitive electrical switch having contact elements disposed for detecting application to the two components of at least a predetermined threshold separa-tion force applied in opposition to the predetermined retaining force; and a transponder coupled to the switch assembly for responding to an irradiated in-terrogation signal by radiating an alarm signal when the switch assembly detects application to the two components of at least the predetermined threshold separation force. One of the contact elements includes a rim and a dome that is deflected from one side of the rim to the other when a force is ap-plied to the dome in accordance with the direction in which the force is applied to the dome, and another one of the contact elements includes a ring that con-tacts the dome when the dome is deflected from one side of the rim to the other.      The switch may be a momentary contact switch that does not maintain a changed state after the minimum predetermined threshold separation force is no longer applied. One of the two components includes a fragile vial containing a detrimental substance that is released from the vial and damages an article attached to the device when the vial is fractured as a result of at least a second lesser predetermined separation force being applied to the two components. A system for detecting attempted removal from a protected article of the theft-deterrence device is installed in proximity to a secluded area of a store, such as a changing room.
Patent CA-2110722-C (CA)
Title: Programmable universal modem system
Inventor: SAINTON JOSEPH B
IPC: H04L29/06
Filed: 1993-04-06
Granted: 1997-09-30
Abstract: A system (102) comprises a portable computer (104) with a central processing unit (106) and associated software (108) and a modem (110) with an output jack (112) carrying data transmit (128), data receive (126) tip, ring (134), and programmable digital input/output (130) lines sufficient to facilitate control of a large number of alternative telephone access devices (116). The operation and functions of the tip, ring, TX, RX and programmable DIO lines are controlled in a preferred embodiment by software in the modem (110) under the control of the software in the computer (104). In a preferred embodiment, a user operates the software in the computer (104) to specify a type or model of telephone access device (116) being used with the modem (110) and the RX, TX, tip and ring lines are rendered either operable or inoperable and a required subset of the programmable DIO lines are caused to operate in a manner necessary to achieve interactive control of an attached telephone access device (116).
Patent CA-2112135-C (CA)
Inventor: WEYER PAUL P
IPC: E02F3/40
Filed: 1992-06-24
Granted: 1996-05-21
Abstract: A fluid-powered,  laterally tiltable quick disconnect bucket actuator(40).  An actuator (40) has a generally cylindrical body (42) with an output shaft (50) rotatably disposed therein with an axis in general parallel alignment with a forward rotation plane through which the bucket (34) is rotatable on a backhoe arm (20) by the operation of a rotation link (24).  A bracket (68) is attached to the body (42) and has a pair of clevises (76, 80) for pivotal attachment to the vehicle arm (20) and rotation link (24).  In one embodiment, the shaft (50) has two pairs of attachment forks (57, 61) for attaching the shaft (50) to corresponding clevises (36, 38) of a bucket.   In alternative embodiments, the extendable member (58) has a locking pin portion (210) which is extended to seat in a bucket receiver aperture (202) to lock the bucket (34) in posi-tion or retracted within a shaft aperture (116) to release the bucket  (34).   In one embodiment,  the member  (58)  is manually rotated and in another embodiment the extendable member is moved by a hydraulic piston (214).
Patent CA-2114100-C (CA)
Inventor: TEAL BENNY
IPC: F26B21/10
Filed: 1994-01-24
Granted: 1995-08-15
Abstract: A method for drying wood strands and the like is shown and described. In a preferred embodiment, the strands are fed onto a conveyor which then moves the strands as a bed through a dryer housing. The housing may be partitioned into various zones and levels, depending on the desired configuration. A volume of drying air is heated and then passed through the bed of strands to reduce the moisture content of the strands. In a preferred embodiment, the strands are agitated to promote the even exposure of the strands to the drying heat. The strands are then conveyed through a conditioning zone before being discharged from the dryer housing.
Patent CA-2114523-C (CA)
Title: Process for preparing emulsions that are polymerizable to absorbent foammaterials
Inventor: DESMARAIS THOMAS ALLEN
IPC: C08F2/32
Filed: 1992-08-07
Granted: 1998-01-06
Abstract: (SEE FIGURE) Disclosed is a process for the continuous preparation of high internal phase emu lsions which are suitable for subsequent polymerization into polymeric foam materials that, upon dewatering, act as absor bents for aqueous body fluids. The process involves continuous introduction of a certain type of monomer-containing oil pha se and a certain type of electrolyte-containing water phase into a dynamic mixing zone at relatively low water to oil phase ratios. Fl ow rates are then steadily adjusted to increase the water to oil ratio of the streams fed to the dynamic mixing zone while subje cting the dynamic mixing zone contents to shear agitation which is sufficient to thereby form a high internal phase emulsion tha t, upon subsequent polymerization, provides a foam having an average cell size of from about 5 to 100 microns. The formation o f such a stable high internal phase emulsion is completed by feeding the contents of the dynamic mixing zone to and through a st atic mixing zone.
Patent CA-2115197-C (CA)
Title: Lancet blade designed for reduced pain
Inventor: BURNS JAMES A
IPC: A61B5/15
Filed: 1994-02-08
Granted: 1999-04-20
Abstract: A lancet assembly having a blade designed for reduced pain that is used for piercing a patient's skin to cause capillary blood to flow for collection and testing. The blade has a shear percentage greater than conventional lancet blades to provide additional cutting action when the blade is being inserted into a puncture wound and a blade width smaller than conventional lancet blades. Reduced width and increasedshear percentage result in reduced skin tear and penetration force, which therefore causes less pain to the patient during skin penetration.