baber/WOPTO huggingface dataset:
Patent CA-2006162-C (CA)
Title: Differential capacitive pressure sensor with over-pressure protection
Inventor: GRANTHAM DANIEL H
IPC: G01L9/12
Filed: 1989-12-20
Granted: 1995-02-07
Abstract: A pressure sensor (10) having over-protection  for use in environments  which subject the sensor to large pressure overloads, such as may occur when such sensor is exposed to jet and  automobile engine backfires, explosive gas furnace ignitions and similar high  pressure  events.   Essentially two capacitive  sensors are  bonded together, diaphragm-to-diaphragm,  with  the  diaphragms  (111A/111B)  spaced  but juxtaposed and  forming a  closed, reference cavity chamber (114) between them, along with a central, side, wall spacer (116C).  The  capacitance  variation  with  differential pressure is  measured between the two  diaphragms and with reference to  their respective  bases (112A/112B).  Each of the diaphragms preferably is provided with a center bearing or stops (115A/115B) for accepting the load when over-pres-sured.  When in contact at the center, the stiffness of the combined pair  of diaphragms is increased several fold over that of a single  diaphragm.    Furthermore,  providing for bottoming stops  for the  combination on either side of the sensor prevents deflection to the breaking  point, because the presence  of the  opposed bottoming  stops stiffens its respective diaphragm.
Patent CA-2006178-C (CA)
Inventor: PETHERS PETER C
IPC: B60S1/34
Filed: 1989-12-20
Granted: 1994-02-22
Abstract: ABSTRACT   PIVOT JOINT AND METHOD OF PRODUCING SUCH A PIVOT JOINT       A pivot joint (1) comprises a first member (2) of generally channel section with diverging walls (4) at least in the region of the joint (1), a second member (3) to which the first member (2) is to be pivotally connected and which is adapted to lie at least partially within the first member (2) in the region of the joint (1) and which has divergent sides (5) in the same sense as the first member (2), at least in the region of the joint (1) and a joint body (10) of channel shape with substantially parallel sides (14,15) prior to assembly.  First attachment means (6) are provided on the first member (2) for cooperation with first attachment means (11) on the joint body (10) and second attachment means (7) are provided on the second member (3) for cooperation with second attachment means (12) on the joint body (10).  The arrangement is such that when the joint body (10) is pushed into the first member (2) and onto the second member (3), the parallel sides (14,15) of the joint body (10) are splayed outwardly and engagement between the first attachment means (6,11) and the second attachment means (7,12) is achieved, at least one of the attachment means (6,7,11,12) being so constructed as to allow at least limited pivotal motion between the associated member (2,3) and the joint body (10).          The invention also includes a method of making such a joint.
Patent CA-2009430-C (CA)
Title: Monitoring and/or control of optical amplifiers
Inventor: HALEMANE THIRUMALA R
IPC: H01S5/00
Filed: 1990-02-06
Granted: 1994-07-26
Abstract: Briefly, in this invention, the output optical power of an optical amplifier is determined by detecting and measuring the electrical signal induced on the bias lead of the optical amplifier when an optical data stream with additional amplitude modulation passes through the optical amplifier. This additional amplitude modulation can consist of a base band signal, a pilot tone and/or a sub-carrier which is amplitude modulated, frequency modulated or phase modulated. The modulation depth and bandwidth of the additional amplitude modulation should be kept small enough that the data stream is not excessively affected. The induced electrical signal provides a measurement of the optical power at the output facet of the optical amplifier. Control of the output power of the optical amplifier is effected by controlling the bias current applied to the bias lead of the optical amplifier. Thus, the output power of an optical amplifier can be monitored and telemetry signals can be received without interception of the data stream. The additional amplitude modulation of the data stream can be effected at the transmitter or by modulation of the bias current of an optical amplifier for transmission downstream. With this invention, no optical power is lost when the output power generated by an optical amplifier is monitored and modulation of the data stream can be effected without the use of additional optical components.
Patent CA-2015482-C (CA)
Title: Optical system including wavelength tunable semiconductor laser
Inventor: CUNNINGHAM JOHN E
IPC: H04B10/275
Filed: 1990-04-26
Granted: 1994-03-29
Abstract: Abstract Optical systems which include a particular type of wavelength-tunable semiconductor laser are disclosed. Significantly, the active layer of the laser includes a doping superlattice layer. Even more significantly, wavelength-tunability is achieved by nonuniformly, optically and/or electrically pumping the laser.
Patent CA-2017193-C (CA)
Inventor: STRUPCZEWSKI JOSEPH T
IPC: C07D413/04
Filed: 1990-05-18
Granted: 2000-06-27
Abstract: This invention related to compounds of the formula:   (see formula I) wherein X is -p-, -S-, (see formula II), or (see formula III) p is 1 or 2;      Y is hydrogen, C1 to C6 alkyl, -OH, Cl, F, Hr, I, C1 to C6 alkoxy, -CF3, -HO2, or -NH2, when p is 1;      Y is C1 to C6 alkoxy when p is 2 and X is -O-;      R2 is selected from the group consisting of lower alkyl, aryl lower alkyl, aryl, cycloalkyl, aroyl, alkanoyl, and phenyl sulfonyl groups;      Z is -CH- or -N-; n is 2, 3, 4, or 5;      R is hydrogen, alkyl, C1 - C6-alkoxy, hydroxyl, carboxyl, Cl, F, Br, I, amino, C1 - C6-mono or-dialkyl amino, -NO2, lower alkyl thio, -OCF3, cyano, acylamino, -CF3. trifluoroacetyl, aminocarbonyl, (see formula IV), (see formula V), (see formula VI), (see formula VII), or (see formula VIII); where alkyl is lower alkyl; aryl is phenyl or (see formula IX);        R1 is hydrogen, lower alkyl, C1 - C6 alkoxy, hydroxy, Cl, F, Br, I, C1 - C6 alkyl amino, -NO2, -CN, -CF3, -OCF3; and heteroaryl is (see formula X)  ;   where Q is -O-, -S-, (see formula XI) , -CH=N;      R3 is hydrogen, lower alkyl, or acyl; and m is 1, 2, or 3; or a pharmaceutically acceptable acid addition salt thereof.        The invention relates further to a process for the preparation o~ the above compounds and their use as medicaments having antipsychotic and/or analgetic activity.
Patent CA-2019657-C (CA)
Title: Rubber mixtures containing sulfur-modified polychloroprene gel
Inventor: ENGELS HANS-WILHELM
IPC: C08L21/00
Filed: 1990-06-22
Granted: 2001-02-13
Abstract: Rubber mixtures containing so-called "pre-crosslinked"' polychloroprene give vulcanizates having an improved combination of low rolling resistance and low abrasion.
Patent CA-2023499-C (CA)
Title: Duplex heat exchanger
Inventor: SASAKI HIRONAKA
IPC: F28F9/26
Filed: 1990-08-17
Granted: 2002-10-29
Abstract: A duplex heat exchanger comprises unit heat exchangers which have a plurality of tubes arranged parallel with each other and comprise fins each interposed between two adjacent ones of such tubes, opposite ends of each tube being connected to a pair of headers in fluid connection therewith. The unit heat exchangers are closely juxtaposed to each other fore and aft in a direction of air flow. Coolant circuits of said unit heat exchangers are connected either in series or in parallel with each other.
Patent CA-2027134-C (CA)
Inventor: THORN RICHARD P
IPC: F16F15/02
Filed: 1990-10-09
Granted: 2000-08-08
Abstract: A strut assembly for connecting and damping motion between relatively movable objects. The strut assembly includes a casing containing a pair of movable connecting members which cooperate with ribbed slide elements and elastomeric layers in the casing to damp motion by inducing hysteresis in the elastomeric layers and creating friction.
Patent CA-2027464-C (CA)
Title: Seat belt safety clip
Inventor: ROBERTSON SHARON L
IPC: B60R22/00
Filed: 1990-10-12
Granted: 1995-06-06
Abstract: A specialized clip which is designed to be movably affixed at any desired location along the length of the passenger lap seat belt and provide a mating retaining means to engage a portion of the passenger shoulder seat belt at any desired location along the length of the passenger shoulder seat belt to thereby cause the angle of orientation of the shoulder seat belt to be shifted to any desired arc as it rests across the passenger's torso and thereby prevents the shoulder seat belt from coming in contact with the passenger's neck.
Patent CA-2029067-C (CA)
Title: Tamperproof rotary valve
Inventor: HEIDBRIER WARREN G
IPC: F16K5/20
Filed: 1990-10-31
Granted: 2000-08-08
Abstract: A tamperproof rotary valve which includes a valve body having a fluid flow passage extending therethrough.      The passage is intersected by an actuator opening in the body and defining a valve chamber thereat. A rotary valve is disposed in the chamber for opening and closing the fluid flow passage. An actuator is journaled in the actuator opening and is coupled to the rotary valve for rotating the valve. A groove is formed about the actuator, and a contractible/expandable locking ring is disposed in the groove and projects outwardly of the groove beyond the bounds of the actuator when in a free, expanded condition. The locking ring is contractible into the groove to allow assembly of the actuator into the actuator opening. A locking groove is formed in the actuator opening in the valve body and into which the locking ring expands when the actuator is in a proper assembled position in the actuator opening. The actuator has a cam surface for biasing the locking ring into the locking groove in response to any attempted withdrawal movement of the actuator in said opposite direction. A resilient grommet is compressed between an enlarged portion of the actuator and the valve body to generate torque therebetween to resist rotation. A valve seal is disposed in a seal seat in the valve body about the valve ball, the valve seal being resilient and having a stiffening ring embedded therein.
Patent CA-2030724-C (CA)
Title: Liquid crystal light valve goggles for eye protection
Inventor: EFRON UZI
IPC: A61F9/02
Filed: 1990-11-23
Granted: 1996-01-09
Abstract: An eye protection device 10 comprising a liquid crystal light valve 20 for providing an image of a scene. The light valve images the field of view under observation in a  spectral range which matches the human eye.  It will automatically reject a laser  threat by simply absorbing the   energy   therefrom in the photoconductive layer thereof.  Thus, the invention 10 provides a broad spectrum, zero response time, angle and polarization  independent, sensitive eye protection device having a fast recovery time, high extinction coefficient and a high damage threshold.   Hence, the invention  is expected to be of significant utility to personnel operating in hostile environments.
Patent CA-2032843-C (CA)
Title: Spray rinse process for vertical axis automatic washer
Inventor: CUR NIHAT OMER
IPC: D06F33/02
Filed: 1990-12-20
Granted: 2001-10-30
Abstract: A method for rinsing a textile wash load is provided for use in a vertical axis washing machine in which a plurality of initial spray rinses are used in which the released water is discharged directly to drain and a plurality of subsequent spray rinses are used in which the water is recirculated through the spinning clothes load for a predetermined length of time before being discharged to drain. Enhanced detergent and soil removal with less water usage is achieved with this method.
Patent CA-2034713-C (CA)
Title: Pendant connector
Inventor: SONG CHANG J
IPC: A44C3/00
Filed: 1991-01-22
Granted: 1993-06-29
Abstract: PENDANT CONNECTOR                   ABSTRACT OF THE DISCLOSURE         A device for removably attaching a pendant to a decorative chain is disclosed.  The device comprises two arcuate latching elements.  The first latching element receives the chain and has an arm swivably attached to one end, which engages the other end when it is swiveled to a closed position, thereby creating a closed, locked loop around the chain.  The second latching element receives a connecting loop on the pendant to be attached to the chain. The second element has a locking bar swivably attached adjacent to an eyelet on one end.  The eyelet is adapted for receiving the first latching element.  The locking bar has a longitudinal opening through which the eyelet protrudes when the locking bar is swiveled to a closed position, the locking bar thereby creating a closed, locked loop around the connecting loop on the pendant.  When the two elements are interlocked in this manner, they are oriented at right angles to each other. The device of the present invention allows the attachment of substantially flat pendants to chains so that the front face of the pendant can be seen.
Patent CA-2041776-C (CA)
Title: Projection cathode-ray tube
Inventor: IWASAKI YASUO
IPC: H01J31/10
Filed: 1991-05-03
Granted: 1994-10-18
Abstract: A projection cathode-ray tube comprising a  transparent protective layer interposed between a face panel and an optical multilayered interference film.  In order to prevent a browning discoloration occurring on the glass surface of the face  panel caused by a direct chemical reaction between the glass surface and  the  optical multilayered interference filter  due  to  an electron  bombardment,   there  is  disposed  the   transparent protective  layer, made from inorganic materials,  between  the face  plate and the optical multilayered  interference  filter.          The  transparent protective layer consists of silicon  dioxide (SiO2)  or aluminum oxide (Al2O3), and has a thickness of  0.05 micrometer or less or 0.5 micrometer or more, respectively.
Patent CA-2042040-C (CA)
Title: Microphone controller with multifunction single conductor
Inventor: KOWALSKI JOSEPH L
IPC: H04B7/26
Filed: 1990-12-17
Granted: 1994-07-05
Abstract: MICROPHONE-CONTROLLER WITH MULTIFUNCTION, SINGLE CONDUCTOR            Abstract of the Invention The single power conductor carries audio and a serial data bus. The microphone's amplifier (101) is connected to the conductor (108). The incoming audio signal rides on the DC supply voltage from the radiotelephone. The supply voltage, through a voltage regulator (103), supplies power to the amplifier (102) and a microprocessor (105), used to transmit the serial data message on the conductor (108). Both the amplifier (102) and the voltage regulator (103) are isolated from the power conductor (108) by a FET switch (104) that is controlled by the microprocessor (105). The switch (104) is turned off, isolating the circuitry when the microprocessor (105) is transmitting.
Patent CA-2043475-C (CA)
Title: Cutterbar gear housing design for containing gear lubricating fluid
Inventor: WALTERS JAMES C
IPC: A01D34/76
Filed: 1991-05-29
Granted: 1995-06-20
Abstract: A cutterbar for a rotary mower includes a gear housing containing a series-parallel spur gear train coupled for driving cutting units spaced along the cutterbar.  The gear housing, as viewed from an end, defines a cavity which is wedge-shaped in cross section with the deep part of the wedge being located at the rear of the cutterbar.  As considered when the cutterbar is leveled from end-to-end and disposed for cutting crop at a relatively high level, a top wall of the cavity extends substantially horizontally and the spur gears contained within the cavity are positioned close to and parallel to the top wall so that a substantial volume is left below the gears for containing lubricant.  A plurality of fore-and-aft extending, transversely spaced ribs are formed along a bottom wall of the housing at a level below the gearing whereby the ribs serve to prevent the lubricant from moving quickly towards a lower end of the cutterbar when the latter is working on a slope.  Provided in a lower rear location of each rib is an orifice which serves to permit lubricant to drain to the low end of the cutterbar when it is desired to remove the lubricant from the cutterbar by way of an appropriate drain hole.  A sight gauge is provided at each end of the housing for viewing the lubricant level for aiding in leveling the cutterbar from end-to-end and then for determining if the lubricant level is that desired.
Patent CA-2045784-C (CA)
Title: Method and system for spreading a tow of fibers
Inventor: IYER SHRIDHAR
IPC: D06M23/06
Filed: 1991-06-27
Granted: 1996-01-16
Abstract: A method and system for spreading a tow of fibers (12) using the acoustic energy from a speaker (16a) or other vibrating device for a gaseous medium over which the tow passes as the fibers zig-zag between rods (16d) is described.  The spread tow of fibers are produced at high speed with uniform spacing and are used to make composites with plastics.
Patent CA-2045998-C (CA)
Title: Grommet/seal mounting member for a connector assembly
Inventor: HUTSON RUSSELL W
IPC: H01R13/405
Filed: 1991-06-28
Granted: 1994-05-31
Abstract: ABSTRACT OF THE DISCLOSURE     A connector assembly includes a connector body having at least one terminal,  an electrical conductor connected to and extending  away  from  the  terminal,  and  a  one-piece,  molded grommet/seal  member.   The  grommet/seal  member  is  injection-molded around a portion of the connector body,  the point at which the electrical conductor and terminal are connected, and at least a portion of the electrical conductor.  A portion of the grommet/seal member is formed so as to sealingly attach to an opening in a housing.  The grommet/seal member is formed of a  flexible material,  such  as  neoprene,  so  as  to  allow  the connector  body  to  be  laterally  displaced  for  purposes  of alignment with a mating connector assembly.
Patent CA-2047586-C (CA)
Title: Foetal pulse oximetry apparatus and method of use
Inventor: CHUNG CHRISTOPHER
IPC: A61B5/1455
Filed: 1991-07-23
Granted: 2004-09-28
Abstract: An intrauterine pulse oximetry apparatus and method are provided to measure foetal blood oxygen saturation at sites in a preferred region on the foetus. The sensor of the apparatus is attached to a stiff cable which can be inserted into the uterus past the presenting part and transcervical region of the foetus. The cable may have visual and tactile markings by which the user, without seeing or feeling the sensor, can guide it to an appropriate site on the foetus.
Patent CA-2051636-C (CA)
Title: Combination beam seat support
Inventor: ALLSOP JAMES D
IPC: B62M1/36
Filed: 1990-03-16
Granted: 1996-05-07
Abstract: A seat support (10) for a vehicle including a combination beam interconnected with the vehicle at one end (30) and having a seat (26) mounted on its opposite end. The combination beam includes longitudinally extending load support members (18, 20) of relatively high modulus of elasticity spaced from each other along at least a portion of their length to define a gap (34). An elastomeric shock absorbing material (36) is positioned in the gap. The material being deformed responsive to relative movement of the structural members of the beam when the beam is bent under load such that the material absorbs shock and vibration.
Patent CA-2054941-C (CA)
Title: Cardiac pacemaker
Inventor: MEYERSON SCOTT C
IPC: A61N1/365
Filed: 1991-11-05
Granted: 2001-08-07
Abstract: An accelerometer based rate adaptive pacemaker. An acceleration sensor generates an acceleration output signal corresponding to sensed acceleration of a patient's body. Apparatus for providing a sensor determined interval is coupled to the acceleration sensor and the sensor determined interval is proportional to the acceleration output signal. Apparatus for determining an actual pacing interval is coupled to an apparatus for determining a generated pacing interval. The generated pacing interval is a function of both the sensor determined interval and the actual pacing interval.
Patent CA-2061976-C (CA)
Title: Ophthalmological surgery technique with active patient data card
Inventor: MCMILLEN ALAN R
IPC: A61B18/20
Filed: 1992-02-27
Granted: 2006-09-19
Abstract: An ophthalmological laser surgery system having a laser, associated elements for delivering an optical beam from the user to a patient eye location, a control unit for controlling the operation of the system and a system input/output device, is enabled by a patient data card. The data card originally contains both patient background and system control information, which is transferred to the control unit via the input/output device. During system operation, newly generated information, such as laser beam power, is stored in the data card to provide an independent record of the surgical procedure actually performed. After one use, the data card is invalidated to prevent further use.
Patent CA-2063499-C (CA)
Title: Ingestible polymeric phosphonium salts for the lowering of blood cholesterol
Inventor: ST PIERRE LEON EDWARD
IPC: A61K31/80
Filed: 1992-03-19
Granted: 1996-06-18
Abstract: The  invention  is  concerned with  novel  ingestible polymeric phosphonium salts having the formulas:            P'-t(CH2)n1P+(R)2]m1[(CH2)n2P+(R)2]m2R(m1+m2)X-   (Ia)                  (Ib) or                (Ic) wherein  P'  represents  a  cross-linked  and  non-digestible polymer  backbone;  R  is  a  lower  alkyl  radical;  X-  is  a pharmaceutically   acceptable   anion;   m1   and   m2   are, independently, integers varying from 0 to 5 inclusive, with the proviso thatin formula (Ia) ml + m2  1; n, n1 and n2 are,  independently,  integers varying from 0 to 6 inclusive, with the proviso that when m1  1, n2  1; and o1, o2, P1 P2, q1 and q2 are, independently, integers varying from 1 to 6 inclusive. The polymeric phosphonium salts of the invention are highly efficient sorbents for bile acids and salts and can  thus  be  used  for  reducing  hypercholesterolemia  in affected humans.
Patent CA-2063686-C (CA)
Title: Abnormal battery cell voltage detection circuitry
Inventor: GROEHL LAWRENCE R
IPC: G01R31/36
Filed: 1992-03-20
Granted: 2001-02-06
Abstract: Defective battery cells are detected by individually monitoring the voltage output therefrom, which characteristically becomes abnormal when the defective condition occurs. Each cell is independently referenced to a common ground by its voltage monitoring device which drives a level sensing comparator that generates a control signal when the output voltage from that cell becomes abnormal. This control signal drives at least one switch to indicate when the defective condition occurs.
Patent CA-2063754-C (CA)
Title: Compact voltage controlled oscillator for microwave applications
Inventor: WATANABE HIDEAKI
IPC: H03B5/18
Filed: 1992-03-23
Granted: 1995-08-15
Abstract: In a voltage controlled oscillator, a dielectric resonator is mounted on a base of a conductive housing, and a dielectric substrate is secured to sidewalls of the housing in a position spaced from the dielectric resonator. A first stripline is secured to one surface of the substrate and electromagnetically coupled to the dielectric resonator, and an oscillating element is electrically connected to the first stripline. A second stripline is secured to the opposite surface of the substrate and capacitively coupled to the first stripline through the substrate. The second stripline is adapted to receive a frequency control voltage from an external circuit. A voltage-controlled variable capacitance element is secured to the substrate and electrically connected to the second stripline.