baber/WOPTO huggingface dataset:
Patent CA-2105510-A1 (CA)
Title: Amperometric measuring device having an electrochemical sensor
Inventor: VAN DEN BERG ALBERT
IPC: G01N27/416
Filed: 1993-09-03
Abstract: An amperometric sensor device comprises in combination a sensor (21) having a planar structure obtained by photolithographic techniques and a circuit (22) for measuring the intensity of the electrochemical current generated by the sensor (21). The planar structure has an insulating substrate (23 to 25) and a set of electrodes composed of a working electrode (29), a counter electrode (30) and a reference electrode (31). A diffusion membrane (32) is deposited on the working electrode (29).      Connection means (26) are provided to connect the electrodes (29,30,31) to the measuring circuit (22).      According to the invention, the active conducting part of the working electrode (29), situated at the surface of the substrate (23) is entirely covered by the diffusion membrane (32) which overlaps this electrode (29) over its entire peripheral zone, whereas this membrane is entirely exposed so that, during the operation of the device (20) it is in contact with the fluid to be analysed over its entire surface.   The invention has applications in measuring the content of an oxygen reducible substance in a fluid, notably of chlorine in drinking water.
Patent CA-2108268-A1 (CA)
Title: Improved process for recovery of purified terephthalic acid
Inventor: STREICH DEBRA J
IPC: C07C63/26
Filed: 1992-04-09
Abstract: A process is disclosed for preparation of purified terephthalic acid containing 200 ppmw or less of p-toluic acid. A filter cake of purified terephthalic acid is prepared by filtering, under a differential pressure of about or greater than 0.5 psi over the system pressure and a temperature within the range of from about 100 °C  to about 205 °C, an aqueous slurry of purified tereph-thalic acid containing a solution of p-toluic acid. The aqueous solution of p-toluic acid remaining in the filter cake of purified ter-ephthalic acid is displaced from the filter cake by water under a pressure gradient over the system pressure at a temperature with-in the range of from about 100 °C to about 205 °C. Pressure flash evaporation of water remaining in the filter cake occurs upon release of the system pressure to lower pressure with consequent lower temperature. The crystalline terephthalic acid product con-taining 200 ppmw or less p-toluic acid can be dried under atmospheric pressure. Purified terephthalic acid is useful for the manu-facture of polyesters from which clothing and related goods are made.
Patent CA-2111747-A1 (CA)
Title: Plunger structure for tea maker
Inventor: WU OTTO
IPC: A47J31/20
Filed: 1993-12-17
Abstract: A tea maker  includes  a  cylindrical  container which contains hot water and tea leaves and a plunger which has an elongated rod with a pressing member secured to an end thereof to be inserted into the cylindrical container.  The pressing member has  a  cross-sectional  shape  corresponding  to  the cylindrical container to be snugly fit therein and movable and rotatable relative thereto along and about the longitudinal direction of the rod.   Water passages are formed on the pressing member to allow water to flow between the top side and the under side thereof.   A plurality of sharpen-ended teeth are formed on the under side of the pressing member and depending therefrom to press and squeeze the tea leaves that are disposed in the  cylindrical  container and below the pressing member to make tea.
Patent CA-2114607-A1 (CA)
Title: One-step synthesis of ethyl t-butyl ether from t-butanol using .beta.   -zeolite_and multimetal-modified .beta.-zeolite catalysts
Inventor: KNIFTON JOHN F
IPC: B01J29/076
Filed: 1994-01-31
Abstract: ONE-STEP SYNTHESIS OF ETHYL t-BUTYL ETHER     FROM t-BUTANOL USING .beta.-ZEOLITE AND MULTIMETAL-MODIFIED .beta.-ZEOLITE CATALYSTS      (D#81,264-F) ABSTRACT OF THE DISCLOSURE         Disclosed is an improved process for preparing ethyl t-butyl ether in one step which comprises reacting tertiary butanol and ethanol in the presence of a catalyst selected from zeolite beta and zeolite beta modified with multimetals selected from the group consisting of Groups IB, VB, VIB, VIIB or VIII of the Periodic Table at a temperature of about 20°C to 250°C and atmospheric pressure to about 1000 psig, wherein when the temperature is in the operating range above about 140°C, the product comprises a two-phase mix of an ETBE-isobutylene and, optionally, diisobutylene product-rich phase and a heavier aqueous ethanol-rich phase.
Patent CA-2116975-A1 (CA)
Title: Two stroke internal combustion engine
Inventor: POWELL BRIAN LESLIE
IPC: F02B23/00
Filed: 1992-09-23
Abstract: A two stroke internal combustion engine comprises a piston (8) reciprocating in compression chamber (6), an inlet valve (5) permitting the supply of scavenging air at high pressure to compression chamber (6), a small external combustion chamber(3) having restricted communication (9) with compression chamber (6), a valve (2) permitting the injection into combustion chamber (3) of a rich fuel/air mixture which in part passes to compression chamber (6) to form a fuel lean mixture with the scavenging air therein, and ignition means (1) to ignite the fuel rich mixture in combustion chamber(3), in turn allowing burning fuel to ignite the fuel lean mixture in compression chamber (6) so that the operating temperatures in the compression chamber remain sufficiently low to inhibit the formation of nitrogen oxides therein.
Patent CA-2117972-A1 (CA)
Title: Porous ceramic burner for indirectly heated black liquor gasifiers
Inventor: KNEIDEL KURT E
IPC: F23D14/12
Filed: 1994-10-12
Abstract: ABSTRACT OF THE DISCLOSURE   A burner for indirectly heating a fluid bed of a black liquor gasifier comprises a heating tube disposed in the fluid bed for burning a fluid-air mixture and producing a combustion product. The heating tube has an inlet end for receiving the fluid-air mixture and an outlet end opposite the inlet end for passing the combustion product from the heating tube. A porous tube having a plurality of pores is located within the heating tube. The porous tube has an open end positioned near the inlet end of the heating tube and a closed end opposite the open end. The porous tube is made of a ceramic material and is circumferentially spaced from an inner surface of the heating tube.
Patent CA-2118750-A1 (CA)
Title: Bag for containing liquid
Inventor: STEER PETER L
IPC: A61F5/44
Filed: 1994-03-10
Abstract: BAG FOR CONTAINING LIQUID ABSTRACT A combination of a liquid-containing bag and a tube 28 is disclosed. The bag may be urine drainage bag and is made up of a pair of superposed sheets 20, 22, joined by a weld 24 whose configurations is chosen to define in a single welding operation the outline of the bag and the tube integral therewith. A single weld seam 24 defines the bag volume. The tube and portion of the weld seam 24 run adjacent to one another and are separated by a row of perforations 30 or by a line of weakening. In such an arrangement, means are provided for precluding face-to-face contact of selected parts of the inner surfaces of said sheets. This may be done by effecting heat shrinkage of selected parts of one or both sheets. One or preferably both sheets is biaxially oriented.
Patent CA-2119880-A1 (CA)
Title: Actuator and hood for dispensing device
Inventor: TROTTA ROBERT A
IPC: B65D83/34
Filed: 1992-09-23
Abstract: A dispenser device for a foam producing gel includes an actuator and a hood, the actuator being mounted at the top of a gel container and having an inlet contacting the valve stem of the gel container and a nozzle having an outlet directed radially outwardly from the top of the container. The hood is open at the bottom and engages the outer surface of the actuator to cover the actuator when not in use. An opening is provided in the hood and a notch in the rim of the opening contacts a detent on the outer surface of the actuator to ensure that the hood opening is opposite the nozzle outlet of the actuator when the hood is in place. The hood opening when so positioned serves to inhibit excess foaming of gel remaining between the actuator inlet and nozzle outlet when the hood is in place after usage, and a notch is formed in the nozzle structure below the actuator outlet to provide a path of flow downwardly from the outlet as foamed product expands outwardly from the outlet.
Patent CA-2121389-A1 (CA)
Title: Intra-luminal expander assembly
Inventor: KRUMME JOHN F
IPC: A61F2/82
Filed: 1994-04-15
Abstract: An intra-luminal expander assembly for use with a catheter comprises an expandable tubular expander element having openings, for example slots, formed in it, and first and second fixation portions located at or towards its ends. The expander element is disposed around a core element which comprises a shape memory alloy which has been treated so that, when the temperature of the alloy is increased above its A S temperature, it displays a shape memory effect and the length of the core element decreases. The expander element is attached to the core element through the first fixation portion and oriented so that, as the core element decreases when its temperature increases, the first fixation portion is caused to move relative to the second fixation portion in a direction towards the second fixation portion, and the second fixation portion being restrained against movement with the first fixation portion so that the length of the expander element decreases and its transverse dimension increases.
Patent CA-2123777-A1 (CA)
Title: Facsimile user interface with touch-sensitive display and method of use
Inventor: REIFMAN JEFFREY BRIAN
IPC: G06F3/048
Filed: 1994-05-17
Abstract: FACSIMILE USER INTERFACE WITH TOUCH-SENSITIVE DISPLAY AND           METHOD OF USE                         Abstract of the Disclosure A system and method for controlling facsimile communications is disclosed. A facsimile machine contains a touch-sensitive display that displays a plurality of display screens containing step-by step instructions allowing a user to use complex facsimile functions. The facsimile machine displays a plurality of menus on the touch-sensitive display, and the user can select the desired option by touching the touch-sensitive display in the location corresponding to the desired option. The touch sensitive display also displays a prompt that provides the user with instructions related to the particular screen display. The predetermined input locations on the touch-sensitive display are designed to appear like buttons and are labeled to correspond to their function. A button appears to be depressed when the user touches it. The facsimile machine indicates the selection of a button by displaying the button in a depressed position when the user touches the touch-sensitive display, and the facsimile machine performs the function associated with the button when the userremoves his finger from the touch-sensitive display. This allows the user to slide his finger to a different button and perform a different function if so desired. An optional hardware keypad with a plurality of buttons, some of which correspond to buttons on the touch-sensitive display, can be used to enter commands into the facsimile machine.
Patent CA-2132197-A1 (CA)
Title: Systemin
Inventor: RYAN CLARENCE A
IPC: A01N37/42
Filed: 1993-03-18
Abstract: Systemin, an 18 amino acid peptide hormone and first polypeptide hormone found in plants, induces expression of defense genes in plants wounded mechanically or by predators including herbivores, insects, bacteria and viruses. The precursor for systemin is encoded as a 200 amino acid prosystemin molecule that has the systemin peptide sequence located near the carboxyl-terminus. Both a 951 bp cDNA for prosystemin and 4526 bp genomic DNA were cloned and the organization of the gene was determined. Transgenic plants constructed with antisense prosystemin DNA fail to mount a defensive response to wounding. Transgenic plants constructed with increased copy number of prosystemin genes exhibit increased resistance to wounding. Insect larval that feed on transgenic plants constructed with increased copy number of prosystemin genes exhibit decreased growth weight compared to larval that feed on wild type plants. A tomato systemin polypeptide has an amino acid sequence NH3-AVQSKPPSKRDPPKMQTD-COO-.
Patent CA-2135707-A1 (CA)
Title: Injector with retractable shroud
Inventor: PHILLIPS IAN R
IPC: A61M5/20
Filed: 1994-11-14
Abstract: An injector (10) having a needle (14) which is exposed by a retractable shroud (13). Mounted within the body (11) of the injector (10), is a first interacting piston (30) and cylinder (31) which cooperate to enclose a first space (33) which receives the liquid to be injected. A second interacting piston (26) and cylinder (27) cooperate to enclose a second space (28). A gas under pressure is delivered to the second space (28) to cause movement of the second piston (26). The second piston (26) is attached to the first piston (30) and therefore moves with it. The shroud (13) is operatively associated with a valve (35) to regulate the delivery of the gas under pressure to the space (28) to cause operation of the injector (10). A user of the injector (10) grips the body (11) by means of a handle portion (12) and presses the injector (10) against the skin of the animal. This causes retraction of the shroud (13) as the needle (14) penetrates. That retraction of the shroud (13) then causes actuation of the valve (35) to cause operation of the injector (10).
Patent CA-2135746-A1 (CA)
Inventor: SMITH JAMES A
IPC: C11D17/04
Filed: 1993-05-13
Abstract: A method for cleaning soiled fabric articles is provided which comprises tumbling the soiled articles in a rotary clothes dryer at an elevated temperature, in a closed system, such as a sealed plastic bag, wherein said system also includes a fabric-cleaning article comprising a porous substrate sheet impregnated with a gelled liquid cleaning composition.
Patent CA-2136085-A1 (CA)
Title: Zero-voltage complementary switching high efficiency class d amplifier
Inventor: SIAO ROGER
IPC: H03F3/217
Filed: 1993-05-17
Abstract: 2136085 9323798 PCTABScor01 A high-efficiency Class D amplifier is described. In one embodiment, the amplifier contains two transistors (Q1, Q2) which are turned on and off in sequence, the output being taken from the common node between the transistors. The efficiency of the amplifier is substantially increased by insuring that voltage across each of the transistors (Q1, Q2) is substantially zero when it turns on. This advantage is achieved by connecting an inductance (Lb) to the common node, so that the electrical energy stored in any stray capacitance is transferred to the inductance (Lb) before any transistor is turned on.
Patent CA-2137458-A1 (CA)
Inventor: KRENZ ERIC L
IPC: H04W88/02
Filed: 1994-03-22
Abstract: An antenna (i06) for an electronic apparatus is located in a flip element (104) of the apparatus housing. A transformer (108), having a winding (201) in the flip element (104) and a winding (301) in the housing couples electromagnetic energy across the hinge while impedance matching and performing a balun function.
Patent CA-2138207-A1 (CA)
Title: Feeding device for animals such as poultry
Inventor: BANNIER ANITA
IPC: A01K39/012
Filed: 1994-12-15
Abstract: The present invention concerns a feeding device for animals, such as poultry, of the type which is designed to be supplied with feed by a conveyor tube (60) from which it is suspended.      It comprises a plate (10, 110) , a receptacle (20, 120) , the inside of which can, if desired, be connected with the inside of said plate (10, 110), means for connecting said conveyor tube (60) with the inside of said receptacle (20, 120) , and means for controlling the level of feed in said plate (10, 110) when it is connected with the inside of said receptacle (20, 120), said plate (10, 110) thus functioning as a trough.
Patent CA-2140708-A1 (CA)
Inventor: KUSIJANOVIC LUCAS T
IPC: B64D27/00
Filed: 1995-01-20
Abstract: An adjustable engine mount for use on a model airplane to supportably hold a model airplane engine, the engine mount including an adjustably positionable support bracket having a mount  segment which  is  sandwichly positioned between a first mount panel and a second mount panel, the mount segment and the second mount panel each including an axial opening extending therethrough such that an elongate axial screw which extends from the first mount panel may pass therethrough to enable secured adjustable, single step securing of the mount segment, and accordingly the support bracket,  in  a  selected secured orientation therebetween, thereby aligning the engine disposed on the support bracket in a desired orientation within the model airplane.
Patent CA-2141032-A1 (CA)
Title: Improved port protector and containers having same
Inventor: BALTEAU PATRICK
IPC: A61M39/20
Filed: 1994-06-09
Abstract: An improved port protector (10) for removably sealing an opening located at an end of a tubular member. The part protector (10) comprises a cap portion (12) including a top (18) and side walls (17, 19) and defining an interior for receiving the end of the tubular member and removably sealing the opening of the tubular member. The cap portion (19) at least is constructed from a thermoplastic elastomer and the top (18) has a sufficiently thin cross-sectional thickness (a) to allow steam to pass through the top (18) into the opening of the tubular member during steam sterilization. Additionally, the port protector (10) includes means (14) extending from the cap portion (12) for allowing removal of the cap (12) from the tubular member. Additionnaly, the present invention provides an improved container assembly (30).
Patent CA-2144550-A1 (CA)
Title: Method of making a stiffened structural member, and the production of said method
Inventor: TOPHAM WILLIAM H
IPC: B29C48/12
Filed: 1995-03-14
Abstract: A structural member comprising a hollow-section structural element made of a first material and whose inherent rigidity (stiffness) has been improved by the inclusion, within the void of the hollow section, of an elongate body of substantially the same length as the structural element, said elongate body filling all or part of said void and including a second material which has a density lower than that of the first material, and said elongate body further including at least one stiffening member which is of substantially the same length as the structural element and which is made of a third material and which is bonded to said second material.
Patent CA-2144629-A1 (CA)
Title: Adjustable cover and seating system for a wheelchair
Inventor: DINSMOOR JOHN C III
IPC: A47C4/54
Filed: 1993-09-09
Abstract: An adjustable cover (5) and seating system (1) for a wheelchair (3). The cover (5) has an enclosure portion (35, 37) and a skirt section (53) extending about the sides of the enclosure portion (35, 37) and downwardly under the lower section (37) of the enclosure portion. The enclosure portion (35, 37) can be placed over the seating members (7) and secured in place by a zipper (41) to encase the seating member (7). The skirt section (53) can then be pulled to draw the skirt section downwardly which, in turn, draws the upper section (35) of the enclosure portion snugly across the top of the seating members. The system includes a slit or cut-out fluid pad (9) forming sides (2) which can be positioned to straddle a removable accessory such as an abductor (11).
Patent CA-2146234-A1 (CA)
Title: Coin storage insert for a cash register change drawer tray
Inventor: BURDENIUK DARREN O
IPC: G07G1/00
Filed: 1995-04-07
Abstract: The present invention provides a coin storage insert for use with a cash register change drawer tray particularly of the type for inserting into oneof the paper money partitions of the change drawer tray. The change storage insert comprises an insert body separate from the change drawer tray, a pair of spaced apart parallel side walls, a front wall, a rear wall, a bottom, and an open top. The front wall curves from a top edge downwards towards the bottom and the bottom curves upwards at a front end to meet with the front wall forming a continuous curved surface to allow for easy removal of coins.
Patent CA-2146852-A1 (CA)
Title: New substituted pyrazole derivatives, processes for their preparation and their use as herbicides
Inventor: DORFMEISTER GABRIELE
IPC: C07D487/04
Filed: 1993-10-11
Abstract: New substituted pyrazole derivatives of general formula (I) (see formula (I)) are described in which R1, R2, R3, R4, R5 and R6 have the meanings given in the description, processes for their preparation, as well as intermediates, and their use as herbicides.
Patent CA-2147576-A1 (CA)
Inventor: MAINEULT JEAN
IPC: H01H33/10
Filed: 1995-04-21
Abstract: The medium or high tension circuit breaker comprises an envelope filled with dielectric gas, and a cut-off chamber (30) containing metal plates (14) for splitting up the electric arc into a number of smaller elementary arcs under the action of a magnetic field. The chamber includes a helicoidal insulating ramp (13) wound about a central generator axis (13a). This ramp is arranged around the internal edge of the chamber about a central conducting electrode (12). The metal plates are arranged along the length of the ramp, around and spaced from the central conducting electrode. <IMAGE>
Patent CA-2149240-A1 (CA)
Title: Process for preparing taxane derivatives; new taxanes thus produced and antitumoral and antileukemia compositions containing the same
Inventor: BOURZAT JEAN-DOMINIQUE
IPC: C25B3/25
Filed: 1993-11-10
Abstract: Process for the electrochemical preparation of taxane derivatives of general formula (I), based on a taxane derivative of general formula (III). The invention also concerns pharmaceutical compositions with outstanding antitumour and antileukaemia properties which contain a novel product of general formula (I) wherein R3 is a radical of general formula (II). In general formulae (I) and (III), R is a hydrogen atom or an acetyl or alkoxyacetyl radical, one of the symbols R1 or R2 is a hydrogen atom and the other is a hydroxy radical, R3 is a hydrogen atom or a radical of general formula (II) wherein Ar is an aryl radical and R4 is a benzoyl radical or a R5-O-CO- radical in which R5 is an alkyl, alkenyl, cycloalkyl, cycloalkenyl, bicycloalkyl, phenyl or heterocyclyl radical.
Patent CA-2150073-A1 (CA)
Title: Filtration
Inventor: PERRETT KENNETH J
IPC: B29C53/50
Filed: 1995-05-24
Abstract: The invention relates to a membrane tube comprising a tubular substrate and a membrane layer thereon, the substrate having a substantially longitudinal seam. The substrate is a single ply polyester, formed from a tape which is slit to a desired width so that when it is formed it forms a tube of a desired outside diameter, preferably from 3mm and upwards. The membrane layer is applied to the interior surface of the tube in a viscous dope, which is subsequently set toa gel to form a plastic membrane layer. The viscous dope can be a polymer such as a polysulphone.
Patent CA-2151466-A1 (CA)
Title: Sunlight viewable thin film electroluminescent display
Inventor: BUDZILEK RUSSELL A
IPC: H05B33/22
Filed: 1993-12-13
Abstract: An AC thin film electroluminescent display panel includes a metal assist structure formed on and in electric contact over each transparent electrode, and a light absorbing dark layer which combine to provide a sunlight viewable display panel.
Patent CA-2152112-A1 (CA)
Title: Shop(ping)-stick
Inventor: HOSNY AHMED FOUAD ALY
IPC: A45F5/10
Filed: 1995-06-19
Abstract: Shopping bags are either "paper or plastic". Most shoppers choose plastic, since plastic bags are easier to carry -using the handles, hooked over the person's fingers-, specially if more than two bags are needed.            However, carrying several plastic bags -specially if the contents are heavy- can be awkward and painful (on the fingers and/or palms). This is especially true in the case of senior citizens, arthritis sufferers or handicapped persons who can only use one arm/hand.            While shopping wire or metal baskets on wheels are sometimes used, they are, in general, bulky and could be prohibitively expensive for some people.