baber/WOPTO huggingface dataset:
Patent CA-2045904-A1 (CA)
Title: Lawn mower drive and control systems
Inventor: MCDONNER ORVILLE R
IPC: A01D34/68
Filed: 1991-06-28
Abstract: ABSTRACT OF THE DISCLOSURE    A walk-behind power driven lawn mower having a transverse handlebar rearwardly of the mower, a pair of hand operated control levers located forwardly of and adjacent to the handlebar and extending generally parallel thereto for establishing the drive and applying the brakes to a pair of driven wheels of the lawn mower.          A park brake lever is mounted between said control levers for simultaneously applying the brakes to the driven wheels through a connection between the park brake lever and the control levers.          A releasable latch mechanism releasably holds the park brake lever in the braking position.  Another control lever in the form of a bail is mounted to be pivoted rearwardly relative to the handlebar for engaging idler pulleys when the transmission is shifted to provide reverse movement.   Each drive to the wheels includes a drive pulley and belt and another idler pulley for engaging the belt to establish drive when the transmission is shifted for forward movement.  During shifting of the transmission, the drive from the engine to the transmission is automatically disengaged.          A dead man control lever is also mounted to be movable against the handlebar on a side opposite where the hand levers are located.
Patent CA-2046110-A1 (CA)
Title: Low frequency acoustic fuel sensor
Inventor: BATES KENN S
IPC: G01F23/296
Filed: 1991-07-03
Abstract: LOW FREQUENCY ACOUSTIC FUEL SENSOR                 ABSTRACT OF THE DISCLOSURE       An acoustic fuel (or other liquid, powder or solid) sensor is disclosed.  The sensor measures the volume of fuel in a container of known size.  The air within the container  is  excited  by  an  acoustic  transducer.   The transducer is driven by a frequency scanning source, and the  frequency  response  of  the  air  cavity  within  the container is monitored.  This frequency response is then processed to determine the volume of air in the container, and the fuel volume is determined to be the total con-tainer volume less the air volume.  In one embodiment, a tube connects the transducer through an orifice to the air volume, and the frequency response is observed to deter-mine the resonant frequency of the air cavity within the container.  The volume of the air cavity is then deter-mined from the resonant frequency.  The volume of the fuel is then determined from the tank volume minus the volume of the air cavity.
Patent CA-2048108-A1 (CA)
Inventor: CAMPBELL RANDOLPH
IPC: A47J37/07
Filed: 1991-07-30
Abstract: In general, it is difficult to cook large roasts or fowl on a home barbecue rotisserie. A simple shroud for elevating a rotisserie above a barbecue includes a pair of end walls with brackets for supporting the rotisserie, and two pairs of L-shaped panels defining side walls. The top and bottom edges of one end wall and one pair of panels are bent over to form tracks for receiving the ends of the other end wall and the other pair of panels to form a rectangular frame, the dimensions of which can easily be adapted to a variety of barbecues. Alternatively, slots defining tracks are provided in the end walls and in one pair of panels for slidably receiving pins on the other panels, so that the dimensions of the frame can readily be adjusted.
Patent CA-2048997-A1 (CA)
Title: Method and apparatus for controlling the relative humidity in concrete and masonry structures
Inventor: UTKLEV KJELL
IPC: E04B1/62
Filed: 1990-03-12
Abstract: A method and apparatus for expulsion or control of humidity in a concrete and/or masonry structure wherein one or more electrodes are provided in the structure. The electrodes are made of a non-corrosive material, and connected in series or parallel with the current source. An earth electrode is provided adjacent to or on the structure. The electrode(s) represents the anode and the earth electrode represents the cathode in an electrode circuit when they are connected with the respective outputs in the current source. The anode and cathode are provided with a pulse voltage supplied by the current source. The pulse voltage is delivered sequentially as pulse sequences of a given pattern.  The anode is fed with a pulse sequence generated with a first negative pulse, followed by a neutral interval of zero voltage of a duration between 0 - 2 times the duration of the negative pulse, followed by a positive pulse, the duration of which is about 6 times the duration of the negative pulse and by simultaneously feeding the cathode with a corresponding pulse sequence, but with inverted polarity. The method includes a first phase for quick reduction of the relative humidity in the structure (typically two weeks) with a pulse sequence frequency of about 1 - 0.5 Hz followed by a second phase for maintenance of a permanently low humidity content (with a pulse sequence frequency of about 0.2 - 0.1 times the pulse sequence frequency of the first phase).
Patent CA-2051257-A1 (CA)
Title: Crosslinking water-soluble polymers with iron to form gels for use in subterranean profile modification
Inventor: MILLER EDWARD E
IPC: C08L33/24
Filed: 1991-09-12
Abstract: 31,258-00 TITLE OF THE INVENTION                CROSSLINKING WATER-SOLUBLE POLYMERS  WITH IRON TO FORM GELS FOR USE IN SUBTERRANEAN PROFILE MODIFICATION                      Abstract of the Invention A process of profile modifying permeable soils with an environmentally safe composition of a non-toxic water-soluble polymer, a redox couple of a water-soluble ferrous salt and a non-toxic, oxidizing agent which are mixed in water and pumped into a subterranean formation wherein ferrous ion is oxidized to ferric ion to gel the polymer making the subterranean formation impermeable.
Patent CA-2053195-A1 (CA)
Title: Continuously-operating press
Inventor: BIELFELDT FRIEDRICH B
IPC: B30B5/06
Filed: 1991-10-10
Abstract: A continuously-operating press suitbale for use in the production of particle board, etc. has flexible endless steel bands that circulate about a press bed or top over drive rollers and deflection rollers.  These serve to transmit pressing force to and pull through the press the material to be pressed and are spearated by an adjustable press gap.    Each of entry-side heating plates pivot about an axis of rotation and form the entry gap.  Entry systems of the press bed and the press top comprises a roller rod alignment region, a curved material-to-be-pressed pre-compression region and a straight compression region, whereby the entry support for the roller rods, which region extends from an entry tangent up to the beginning of a high pressure region applies steadily increasing frictional but flexible pressure in the range of 0 bar to maximum pressure by means of a plurality of hydraulic support members for the regions.
Patent CA-2053719-A1 (CA)
Inventor: LAPORTE I J
IPC: E21B25/02
Filed: 1991-10-18
Abstract: This invention relates to a wire line core barrel  inner  tube assembly  capable  of  travelling longitudinally within a drill string toward and away from a drill bit carried on the lower end of the string, the drill  string having  an annular landing shoulder therein.       The  inner  tube  assembly  includes  an elongated  body  having  an  annular  landing  shoulder adapted  to  co-operate with  and  seat  on  the  landing shoulder of the drill string when in use.  The body has a valve chamber defined therein and inlet and outlet ports leading from the valve chamber to the exterior of the body on opposite sides of the landing shoulder. These define a by-pass passage through which drilling liquid passing along the drill string must flow on its way toward the bit when the landing shoulder of said body is seated on the landing shoulder of the drill string.   The valve chamber has a valve seat therein and a valve closure is located within the valve chamber.  A biasing  device  urges  the  valve  closure  against  the valve  seat  with a  selected pre-loading  force  as  to prevent  flow of drilling  liquid through the by-pass passage and toward the drill bit until the pressure differential across the valve closure is increased to a level  sufficient  to  overcome  the  pre-loading  force applied by the biasing device.
Patent CA-2054011-A1 (CA)
Inventor: DAVIS JAMES A
IPC: C08J5/18
Filed: 1991-10-23
Abstract: ABSTRACT OF THE DISCLOSURE    The present invention provides a method for positive product identification using tagging materials such as barium sulfate, manganese dioxide or mixtures thereof.   Such materials may be employed, for example, in the dusting agents used in roofing materials, and applied to one or both sides of rubber roofing sheeting or admixed with the compounding ingredients during the preparation of the sheeting composition.  The tagging materials can be detected and identified in the finished product by X-ray fluorescence spectroscopy.
Patent CA-2057967-A1 (CA)
Inventor: MATOBA HIROTSUGU
IPC: G11B7/085
Filed: 1991-12-18
Abstract: An optical disk drive discriminates whether a light spot incident on a disk is on a groove or on a land therebetween by eliminating a pulse that appears in a binary envelope signal when the light spot passes a level section on the disk. The elimination is carried out based on an ODF section detecting signal, the ODF section detecting signal is a level section detecting signal which is produced by detecting a level section (ODF section) on the optical disk. The detection is carried out by differentiating an envelope signal, which is the envelope of an electric signal corresponding to the amount of light reflected from the optical disk. Accordingly, even if the optical disk in use has interrupted grooves, the optical head can be accurately moved to a desired track located on a land or on a groove.
Patent CA-2058561-A1 (CA)
Inventor: BUDNIK RICHARD A
IPC: C09K23/54
Filed: 1991-12-30
Abstract: Silicone surfactants having a siloxane backbone and a mixture of high and low atomic mass oxyalkylene pendant groups, these polyether pendants having average atomic masses of 1500-6000 and 300-750 respectively. Also disclosed and claimed are polyurethane foam compositions which include the surfactants, a method of making polyurethane foam using the surfactants, and polyurethane foam made by the method.
Patent CA-2059123-A1 (CA)
Title: Block copolymer adhesives in hot melts and polyester laminates
Inventor: TSE MUN F
IPC: C08F8/30
Filed: 1990-06-28
Abstract: Disclosed are laminates and hot melt adhesive formulations containing dihydrocarbyl azodicarboxylate-modified multiblock copolymers. The copolymer contains terminal non-elastomeric polymonovinylarene blocks and a non-terminal elastomeric block of conjugated diene. The unmodified multiblock copolymer has a molecular weight of from 20,000 to 250,000, and the elastomeric block comprises from 40 to 90 weight percent of the unmodified block copolymer. The block copolymer is modified by reaction with from 10 to 100 weight percent, especially from 20 to 80 weight percent, on a basis of the unmodified elastomeric block of a dihydrocarbyl azodicarboxylate to obtain a modified multiblock copolymer wherein the elastomeric block contains pendant bicarbamate moieties. The hot melt adhesive composition includes the multiblock copolymer and a compatible tackifier at a ratio of tackifier to copolymer of from 10:90 to 90:10 and may also include up to 40 weight percent of an oil of the copolymer and tackifier. The laminate has at least one polyester substrate to which the adhesive composition is adhered.
Patent CA-2059300-A1 (CA)
Title: A book-shaped case forming a board for a board game
Inventor: TOGNI LOUIS
IPC: A63F3/02
Filed: 1990-06-12
Abstract: The invention relates to a table game board which forms a book-shaped box. It is created by combining, on the one hand, a receptacle adjacent to the game board (1) and forming the sides (4) and the bottom of the storage box while acting as a container for the movables pieces during the game, said receptacle being removable, and, on the other hand, a particular cutting and folding method (12) which allows the board to fold over and to form the top (5) and the back (3) of the storage box, thereby giving it the appearance and format of an ordinary book. The invention provides for all games requiring a board a presentation in the form of a book or other similar shape, by making the board an element of the box.
Patent CA-2059568-A1 (CA)
Title: Insulating composition
Inventor: RAMSAY A MICHAEL
IPC: C09K5/10
Filed: 1992-01-17
Abstract: An ethylene glycol composition containing a glycol-compatible welan gum having unique viscosity and thermal properties. The composition is especially suitable as an insulation material.
Patent CA-2061772-A1 (CA)
Inventor: ISHIGAMI MOTOHIRO
IPC: G01C19/72
Filed: 1992-02-25
Abstract: In a synchronous detector a first local signal from a first local signal generator is frequency divided by a frequency divider to obtain a second local signal. The polarity of the first local signal is inverted by a polarity inverter in synchronization with the second local signal, and the output of the polarity inverter is used to synchronously detect the output of an AC amplifier by a first synchronous detector.  The synchronous detected output is synchronously detected by the second local signal in a second synchronous detector, the detected output of which is averaged by a filter.
Patent CA-2062608-A1 (CA)
Title: Two-part sensor with transformer power coupling and optical signal coupling
Inventor: TANAMACHI STEVEN W
IPC: G01D5/24
Filed: 1992-03-10
Abstract: ABSTRACT           A two-part sensor 40A' includes a power source/signal receiver 58A' and a signal generator, 56A' which are physically spaced and disconnected from one another.  The power source/signal receiver 58A' is encased within transparent encapsulating material 126 and includes an annular solenoid core 128 with an aperture 130, a coil 132 around the core and photodiode 134 mounted in the aperture.  The photodiode 134 detects a modulated light beam received from the signal generator 56A' and produces an output information signal.  The solenoid coil 132 produced a fluctuating magnetic field when connected to a power supply 124.  The signal generator 56A' is encased within transparent encapsulation material 148 and includes an annular relay core 150 with an aperture 152, a coil 154 around the core, a transducer circuit 142, 149, 146 and an LED 155 mounted within the aperture.  The relay coil 154 provides a signal generator supply potential. when positioned within the magnetic field produced by the power source/signal receiver 58A'. The supply potential powers the transducer circuit 142, 144, 146 and the LED 155. The transducer circuit 142, 144, 146 generates a modulated transducer signal as a function of a sensed parameter. The LED 155 is coupled to the transducer circuit 142 144, 146 and produces the modulated light beam as a function of the transducer signal.
Patent CA-2064074-A1 (CA)
Inventor: WEISE DAVID N
IPC: H04N1/52
Filed: 1991-05-21
Abstract: A method and system for generating a dither pattern for a specified color are provided. In a preferred embodiment, the system generates a dith-er pattern corresponding to a specified RGB value. Each RGB value in the set of active colors is defined as a point in a three dimensional coordinate system having a red, green and blue component. The coordinate system is logically divided into a set of non-overlapping, tetrahedral spaces with each vertex representing a solid color. One tetrahedal space is designated as a mappin tetrahedral space. The system maps the specified RGB value to the mapping tetrahedral space from an original tetrahedral space containing the specifed RGB value. The system then determines the four active colors whose corresponding RGB values are closest to the mapped RGB value. The system then determines the number of pels in the dither pattern to set to each determined active color based on the distance between the RGB va-lue corresponding to the determined active color and the mapped RGB va-lue. The system then maps the determined active colors to the original te-trahedral space. Finally, the system sets the pels in the dither pattern to the mapped active colors based on the determined number of pels for that color and a predefined base pattern to effect the generation of the dither pattern.
Patent CA-2066067-A1 (CA)
Title: Vascular prosthesis with an elastomer coating
Inventor: OSTAPCHENKO GEORGE J
IPC: A61F2/06
Filed: 1992-04-15
Abstract: ABSTRACT OF THE DISCLOSURE A vascular prosthesis is made by wetting a porous polyester fiber tubing with water until it gains close to maximum amount if weight, removing excess liquid from inside the tubing, repeatedly contacting the inside surface of the tubing with a solution of a biocompatible polymer in a water-immiscible solvent to adsorb some solution on the inside surface of the tubing, and removing excess solution, then removing solvent from the adsorbed solution to form a nonporous elastomer coating of the desired thickness on the inside surface of the tubing.
Patent CA-2067630-A1 (CA)
Title: Method of synthesizing zeolite beta
Inventor: ABSIL ROBERT P L
IPC: C01B37/02
Filed: 1992-04-30
Abstract: F-6219(6220, 6221) A METHOD OF SYNTHESIZING ZEOLITE BETA             ABSTRACT      A large crystal zeolite Beta having a broad range of silica-to-alumina ratios, i.e. 20-1000, is synthesized with a chelating agent in the form of a tertiary alkanolamine such as triethanolamine in the synthesis mixture along with an organic directing agent such as tetraethylammonium hydroxide, tetraethyl-ammonium bromide and tetraethylammonium fluoride.  The resultant highly siliceous zeolite Beta is useful as a cracking catalyst particularly when treated with a phosphorus compound.
Patent CA-2067761-A1 (CA)
Title: Steering unit
Inventor: GRANTHAM JOHN
IPC: B62B3/14
Filed: 1990-10-12
Abstract: A steering unit (1) for a trolley (12) comprises a first member attached to the chassis (13) of the trolley (12) and a second member attached to a wheel (14) of the trolley (12) and locking means (7) and (5) which lock the second member, and so the wheel (14), in a predetermined position to allow the trolley (12) to be steered with ease.
Patent CA-2067779-A1 (CA)
Title: Photovoltaic cells with improved thermal stability
Inventor: GONSIORAWSKI RONALD C
IPC: H01L31/05
Filed: 1991-08-09
Abstract: Photovoltaic cells with silver-rich thick film electrical contacts and superior thermal aging properties are disclosed. Electrical wires are bonded to the silver-rich thick film contacts using a tin and silver solder paste comprising between about 96 % tin/4 %  silver and 98 % tin/2 % silver. Solar cells having soldered connections incorporating the present invention exhibit the capability of withstanding temperatures in the range of 150 ·C with little or no deterioration of the solder bonds for periods far longer than conventionally prepared cells.
Patent CA-2067870-A1 (CA)
Inventor: SAUZE FRANCOIS
IPC: A62B9/00
Filed: 1992-05-01
Abstract: L'ensemble de valve de détente, couple au levier de diaphragme par un ensemble de tige traversant la cavité interne du boîtier, comporte un dispositif d'échange de chaleur avec le milieu environnant, un support de tige à l'extrémité de l'ensemble de tige opposée à l'ensemble de valve, étant également avantageusement associée un autre dispositif d'échange de chaleur de façon à éviter le givrage, sous l'effet de la détente du gaz respiratoire dans le boîtier, de l'équipage mécanique de commande de l'ensemble de valve, en cas d'utilisation en milieu environnant froid.
Patent CA-2068391-A1 (CA)
Inventor: BRAID HAROLD K
IPC: E05C17/60
Filed: 1992-05-11
Abstract: Abstract A coiled ribbon spring comprising a coiled ribbon spring body and, at a free end thereof, a tongue portion having first engagement means for operative connection to an object to be tensioned, said tongue having at a location between said first engagement means and the coiled ribbon spring body, second engagement means co-operable with first engagement means provided on another coiled ribbon spring.          Also an assembly of such springs disposed one above the other working in concert e.g. in pairs.
Patent CA-2069658-A1 (CA)
Title: Active intelligent termination
Inventor: OKURA DAVID K
IPC: H03K5/1252
Filed: 1992-05-27
Abstract: An active intelligent termination circuit is designed to function as a self-switching clamp adapted to attenuate unwanted signals on a data bus.  A field effect transistor is switched on or off in a conducting mode or non-conducting mode respectively in accordance with the data transmitted on the data bus.  Any low level unwanted signals which may appear on the bus when data having a voltage level corresponding to a logic zero is present will be attenuated by the field effect transistor which is coupled to both the data bus and to a ground plane.  The field effect transistor switches to the non-conducting mode when data corresponding to a logic level one is transmitted on the bus.
Patent CA-2071656-A1 (CA)
Inventor: LOTZ W ROBERT
IPC: A01N61/00
Filed: 1992-06-19
Abstract: Systèmes de préservation du bois utilisant des agents d'imprégnation composés d'extraits de tanin halogéné provenant d'espèces végétales qui sont relativement plus résistants aux champignons, aux intempéries, à la pourriture, aux dégâts causés par les insectes, etc.  Les matières contenues dans les extraits de tanin sont converties en substances halogénées qui sont absorbées par les espèces de bois devant être traitées.  Les matières extraites halogénées peuvent être utilisées avec ou sans agents de traitement (par ex., des fixatifs ou des sels métalliques).  Le brome est la matière halogène préférée, et on obtient un traitement optimal lorsque la concentration en brome dans l'extrait est supérieure à environ 2 % (de préférence de 4 à 5 %).
Patent CA-2074428-A1 (CA)
Inventor: LEVY SIDNEY
IPC: H01R11/24
Filed: 1992-07-22
Abstract: A test probe device is attachable to alligator clips of test equipment for establishing electrical engagement between an electrical contact supported within an insulative housing, which is accessible through an opening therein and the test equipment. The alligator clip includes a pair of actuatable jaws defining a connection region therebetween. The test probe device includes an elongate probe member insertable into the housing through the opening for electrical engagement with the contact. An attachment member is electrically coupled to the probe member. The attachment member is attachable to the alligator clip at a location remote from the connection region thereof, permitting the alligator clip to be used without removing the test probe device.
Patent CA-2075089-A1 (CA)
Title: Apparatus and method for removing undesired coatings from the interior of tubes
Inventor: LAWTHER GERALD H
IPC: B08B9/053
Filed: 1992-07-31
Abstract: ABSTRACT OF THE DISCLOSURE A method of removing undesired coatings from the interior surface of tubes includes inserting a fluid-dynamically unstable impact head into the tube,providing or maintaining fluid flow through the tube and altering the length of a tether attached to the head to move the head along the tube. As a result of the fluid flow, the impact head moves chaotically within the tube, impacting theinterior surface of the tube and removing undesired coatings thereon. An apparatus for accomplishing the method preferably includes an impact head, a flexible retaining line and a carriage moveable within the tube, the carriage aiding in the centering of the retaining line.