baber/WOPTO huggingface dataset:
Patent CA-2133027-A1 (CA)
Title: Catheter with stick protection
Inventor: CHANG JOSEPH J
IPC: A61M5/32
Filed: 1994-09-27
Abstract: A new catheter stick protector is described having a metal flap clip which snaps down into place to prevent return of the needle through the protector device once withdrawn. The device is small and received over the needle to provide an interface between the needle hub and the hub of a catheter like product. A sleeve of hydrophobic or fluid impermeable material is provided and attached at one end to the needle hub and at a second end to the tip protector. The length of the material is selected to hold the tip protector in a position just extending beyond the tip of the needle of a catheter inserter.
Patent CA-2133402-A1 (CA)
Inventor: YOUNG SHELDON E
IPC: B66F11/00
Filed: 1994-09-30
Abstract: The invention relates to a power assisted adjustment system for assuming and maintaining a load member, and comprises a force-responsive means operably connected with an adjustment means, for assuming  a  load,  and  an  actuable  load-relieving  means  for temporarily reducing the load on the adjustment means.  Application of force or torque to the force-responsive means actuates the load-relieving means thereby relieving load on the adjustment means, and substantially concomitantly operably effects a desired adjustment of the adjustment means.
Patent CA-2143440-A1 (CA)
Title: Acetabular cup body prosthesis
Inventor: SCHRYVER JEFF
IPC: A61F2/00
Filed: 1993-08-31
Abstract: An arrangement of an acetabular cup prosthesis which has a cup body with correspondingly shaped inner convex and outer concave surfaces. A polymer liner fits and attaches to the cup at the concave surface. The inner convex surface is highly polished and mirror-like for retarding debris generation with the polymer liner and allowing optical pattern inspection. A plurality of bores can be provided, extending between an inner concave surface and an outer convex surface. wherein the bores can function as drill guides for providing alignment in the drilling of surgical openings after the acetabular cup body is placed in a patient. A plurality of pegs or spikes have proximate end portions that have connection members for forming connections with the bores, and distal end portions that can register into the drilled surgical openings. The polished inner surface can be inspected for defects by viewing an image of a grid means in the polished surface.
Patent CA-2145883-A1 (CA)
Inventor: ZITO RALPH
IPC: H01M8/04
Filed: 1993-10-13
Abstract: An electrochemical process for energy storage and/or power generation and apparatus comprises cell array of unit cells (10), each cell comprising a +ve electrode (12) and a -ve electrode (14) with a membrane in each cell dividing it into +ve and -ve chambers (22C and 24C) for posilyte and anolyte solutions (22, 24) which are recirculated through separate pumps (26, 28) and storage tanks (32, 34) and back to the chambers. Mid electrodes, between adjacent cells in the array, provide both a +ve side and a -ve side. A bromine-sulfure couple may be employed. Means are provided to compensate for pH changes and/or changes in hydroxyl ion concentration in the +ve and/or the -ve sides of the array of cells. Means are provided to affect some limited occurrence of trans-membrane migration or other losses of bromine, sulfure and/or water and to limit the effects of bromine acidification, while affording high energy storage and high power with stable operation over long periods and to maintain output power and voltage at high levels throughout substantially all the discharge cycle.
Patent CA-2151612-A1 (CA)
Title: Material in the manufacture of polymeric articles
Inventor: ASKARI SYED HASAN
IPC: C08F220/28
Filed: 1994-01-11
Abstract: Disclosed is a polymeric article at least a portion of which is manufactured from a hydrogel material having a hydration level of from between about 45 % and 56 % by weight, which hydrogel is formed from a xerogel which is a copolymer system that can be solvolyzed and hydrated and during which undergoes a linear expansion of from about -7 % to about +7 %. The polymeric article is comprised of a copolymer system comprising dichloroacetate ester of glyceryl acrylate, methacrylate and ethacrylate and one or more compatible ethylenically unsaturated without such solvolyzable groups.
Patent CA-2151760-A1 (CA)
Title: Fractional branching reel-type slot machine
Inventor: NICASTRO NEIL D
IPC: G07F17/32
Filed: 1995-06-14
Abstract: A method of implementing desired odds for a reel-type slot machine is disclosed.  All of the possible reel stop combinations are assigned to unique terminal nodes in one or more fractional branching trees stored in a ROM.  The tree(s) comprises a main tier, a plurality of lower tiers and a plurality of terminal nodes.  Each of the tiers has a number of entries which lead either to a lower tier or to a terminal node.  A random number generator is used to select entries on each tier until a terminal node is selected.  The reel stop combination or a particular symbol assigned to the terminal node is then displayed on the pay line and an award is paid based on a pay table.
Patent CA-2152569-A1 (CA)
Title: Baking oven, particularly for bread or confectionery
Inventor: POLIN ANTONIO
IPC: F24C15/32
Filed: 1995-06-23
Abstract: The present  invention  relates  to  a baking  oven, particularly   for   bread   or   confectionery.   It consists  substantially  of  a  closed  compartment within which a plurality of cooking surfaces are envisaged, fixed  or  mobile,  heated,  and  between which a hot air flow may circulate. These cooking surfaces are heated by first heating means, whilst the  hot  air  flow  above  the  cooking  surfaces  is heated by second heating means,  independent of the first heating means. First measuring and adjustment means are also envisaged for the temperature of the cooking   surfaces,   and   second   measuring   and adjustment  means  for  the  temperature  of  the  air flow.
Patent CA-2153448-A1 (CA)
Title: Mouth-care products
Inventor: VENEMA FRANCISCUS TIES
IPC: A61K8/81
Filed: 1995-07-07
Abstract: The invention is directed to improved mouth care products comprising an amount of at least one copolymer ?f N-vinylpyrrolidone and acrylic acid, in a weight ratio of 60-95 to 40-5, suitable additives and carrier material.
Patent CA-2153762-A1 (CA)
Title: Antimicrobial oral composition
Inventor: GAFFAR ABDUL
IPC: A61K8/34
Filed: 1995-07-12
Abstract: A oral composition which inhibits plaque formation and reduces gingivitis and caries comprising a substantially water insoluble noncationic antimicrobial agent, such as triclosan and an acid reducing agent, such as xylitol. The composition is a dentifrice containing a siliceous polishing agent.
Patent CA-2154810-A1 (CA)
Inventor: MCKENNIREY MARTIN
IPC: E06B9/02
Filed: 1995-07-27
Abstract: A security device commonly referred to as windoow bars, that when installed within a window frame, Provide a strong deterent for any person(s) from illegally entering the premises. This design has a center locking unit which allows the window bar assembley to be removed quickly from the window frame as a fire saftey measure.
Patent CA-2155754-A1 (CA)
Title: Method and apparatus for biological activation waste water treatment
Inventor: MACKRLE SVATOPLUK
IPC: C02F3/12
Filed: 1994-02-07
Abstract: Biological activation waste water purification, wherein the waste water is biologically purified in an activation process, in course of which a nitrification occurred. The activation mixture is brought in the circulation circuit with a plug flow character, while the purified water is taken away from the said circuit and the activation mixture is mixed with the waste water after the purified water was taken away, hereby an oxygen lack at the surface of the particles of the activated sludge is caused bringing denitrification processes about. Resulting mixture is aerated which keeps the activated sludge in suspension and during the plug flow causes a gradual oxygen saturation. The apparatus comprises always two separation spaces (4) arranged adjacent to each other by their longitudinal sides, in which communication connections with the activation space are formed and the longitudinal distribution channel (5) formed between the said longitudinal walls is completely closed by an end wall at one side while at the opposite side a passage is arranged, by means of which it is connected with a system of flow channels (9, 7).
Patent CA-2158078-A1 (CA)
Title: Seat with spring-loaded lumbar support
Inventor: HUMMITZSCH KARL
IPC: A47C7/46
Filed: 1995-09-12
Abstract: The chair has a lumbar support area which moves to follow the fore and aft movements of a person in the chair. The seat back includes two portions,namely an upper portion which is generally fixed in position relative to the seat assembly at any given point in time, and which is positioned so as to contact the upper back area of a person sitting in the chair, and a lumbar portion which is movable forwardly and rearwardly relative to the seat assembly and the upper portion. The lumbar portion is spring-biased forwardly from a position of general alignment with the upper portion, so that it follows the person's back as the person leans forward. Preferably, forward and rear stops are provided to limit the lumbar portion to movement between a rearward position in general alignment with the upper portion and a forward position which is at least somewhat rearward from the forward edge of the seat.
Patent CA-2158736-A1 (CA)
Title: Automatic hitching system
Inventor: GINGERICH NEWTON ROY
IPC: A01B59/06
Filed: 1994-03-18
Abstract: A battery-powered grass mower (12) is hitched to an electric garden tractor (10). The hitching system has arms (27) pivoted (29) to the tractor, which can be raised and lowered by means of an electric actuator strut (45). To hitch, the tractor is manoeuvred until pegs (30) pivoted on the arms are poised above sockets (20) on the mower; then, using the electric actuator, the arms are lowered, driving the pegs into the sockets. Once firmly engaged, a latch (36) engages and retains the pegs into the sockets. The latch is releasable electrically. All aspects of hitching and unhitching are under remote control from the driver's seat.
Patent CA-2160187-A1 (CA)
Title: Method and apparatus for reduction of light intensity decay in optical pumping devices
Inventor: ENGLISH THOMAS C
IPC: H03L7/26
Filed: 1995-10-10
Abstract: Optical pumping devices use light reflected from reflecting surfaces to provide a portion of the light incident on the photodetector.  Conventional optical pumping devices experience a decay, over time, of the initial light intensity incident on the photodetector. The optical pumping device of the invention experiences reduced light intensity decay.  The invention passivates the reflecting surfaces to eliminate tarnish and oxidation by pretarnishing the surfaces or covering the surfaces with a material whose reflectivity does not vary over time, such as gold.
Patent CA-2161765-A1 (CA)
Title: Anti-foam device for a bioreactor
Inventor: RODICIO IGNACIO
IPC: C12M3/02
Filed: 1993-06-11
Abstract: An anti-foam device for a bioreactor (1, 2) is provided consisting of a perforated plate (8), made by hydrophobic material, which rotates at the surface (4) of the liquid culture medium (3) contained in the bioreactor vessel (1), said perforated plate (8) being perpendicular to (or having an inclination from 45° to 90° in respect of) the surface (4) of said culture medium (3) and partially immersed into said culture medium (3).    On a preferred embodiment, said perforated plate (8), made of a silicone polymer, is held by a metal support (11); if a spinfilter (15) is provided in said bioreactor (1, 2), said perforated plate (8) is divided in two separate equal sections (12) which are held by two metal supports (11) linked to said spinfilter (15) on the opposite sides thereof. Finally, said anti-foam device allows a significant improvement of the surface aeration rate of the liquid culture medium (3) by increasing the gas exchange rate at the gas/liquid interface (4).
Patent CA-2162721-A1 (CA)
Title: Expansins, proteins that catalyze plant cell wall expansion and weakening of paper fiber connections
Inventor: COSGROVE DANIEL J
IPC: C12P21/06
Filed: 1994-05-12
Abstract: Plant cell expansion is regulated by wall relaxation and yielding, which is thought to be catalyzed by elusive "wall loosening" enzymes. By employing a reconstitution approach, we initially found that a crude protein extract from the cell walls of growing cucumber seedlings possessed the ability to induce the extension of isolated cell walls. This activity was restricted to the growing region of the stem and could induce the extension of isolated cell walls from various dicots and monocots but was less effective on grass coleoptile walls. Sequential HPLC fractionation of the active wall extract revealed two proteins with molecular masses of 29 and 30 KD associated with such activity. Each protein, by itself, could induce wall extension without detectable  hydrolytic breakdown of the wall. We proposed the name "expansins" for this class of proteins. Expansins have been isolated from various plant sources including oat, cucumber broccoli, celery, tomato, cotton, cabbage, and corn, and also from snail and its feces. These proteins weaken the intermolecular bonds between plant wall polysaccharides. They decrease the mechanical strength of commercial products made from polysaccharides such as paper, and therefore present a novel approach in developing new technologies in industries which make use of such polysaccharides such as in the paper industry, in the applications of polysaccharide gums and related products. These proteins moreover present a novel approach in the control of plant growth.
Patent CA-2163310-A1 (CA)
Title: Spring clip
Inventor: WYSE EVERETTE S
IPC: F16F1/12
Filed: 1995-11-20
Abstract: A spring clip for a spring of a door is disclosed. The spring has coils and a predetermined internal diameter. The spring clip includes internal head and tab portions, each defining an opening. The tab portion has opposed sides defining recesses and teeth. The recesses receive the spring and the teeth are positioned between the coils. The opposed recesses define a width or distance greater than the internal diameter of the spring forcing the spring into a non-circular cross section and tightly securing the spring clip to the spring.
Patent CA-2168024-A1 (CA)
Title: Polymer microstructures which facilitate fiber optic to waveguide coupling
Inventor: MCFARLAND MICHAEL JAMES
IPC: G02B6/30
Filed: 1994-08-10
Abstract: The present invention is directed to an optical coupling device for facilitating the coupling of an optical fiber to an optical waveguide and to a method for fabricating such coupling device. An optical coupling device comprising: a substrate (20) having a surface region at a predetermined position on a surface of said substrate for placement of an optical waveguide; and a channel (121) on the surface of said substrate for optically aligning and coupling an optical fiber (32) having a diameter (d1) dimension d1 and an optical waveguide positioned at said predetermined position, wherein the longitudinal axis of said channel is in alignment with said predetermined position such that on placement of said optical fiber in said channel and placement of said optical waveguide in said position the light carrying core of said fiber and said waveguide are in optical alignment or substantially in optical alignment, said channel having sidewalls (16, 18) and a floor (24) wherein the separation of said sidewalls at a cross-sectional depth dimension d2 in the direction normal to said floor has a width W1 and the separation of said sidewalls adjacent to said floor has a width W2, wherein W1, W2, d1 and d2 are selected such that (a) W2 is greater that W1; (b) d2 is greater than 1/2 d1; and (c) d1 is greater than W1 and is equal to or less than W2, wherein on placement of said optical fiber in said channel the force required to displace said optical fiber from said channel is equal to or greater than about 0.01 Newton (N), as determined by the "retaining force test"). Preferred materials for use in the fabrication of substrate (20) include printed circuit board material, polymers, quartz, glass, fused silica, semiconductor wafers and inorganic crystals.
Patent CA-2173782-A1 (CA)
Inventor: INABA MINORU
IPC: G03B35/10
Filed: 1996-04-10
Abstract: A prism (11) installed over focal plates (9) and (10) of a reflextype stereo camera (1) is a composite prism forming two right and left inversion prisms as a unitary structure. The inner one-half pictures of the right and left inverted pictures on the focal plates (9) and (10) are inverted right side left through the prism (11), so that an erect image of the outer one-half picture in the photographing range of the left lens (5) is projected onto the left side of the central projection plane of the prism (11) and an erect image of the outer one-half picture in the photographing range of the right lens (4) is projected onto the right side thereby to synthesize a picture.Thus, the right and left images can be simultaneously seen through one finder, making it easy to view the image and to operate the camera.
Patent CA-2174326-A1 (CA)
Title: Charged liposome preparation
Inventor: KRAUSE WERNER
IPC: A61K49/00
Filed: 1994-11-04
Abstract: The invention relates to a method of administering a liposome preparation having an effective amount of an electrically charged component which is effective in reducing adverse effects of a liposome preparation, e.g., in reducing hemodynamic effects, and improving host tolerance.
Patent CA-2174451-A1 (CA)
Inventor: DOLAN JOHN W
IPC: F16J15/10
Filed: 1994-12-13
Abstract: An improved sealing material for use as a gasket and in similar applications is disclosed. The material is constructed from a composite of comformable expanded polytetrafluoroethylene (PTFE) and embedded densified expanded PTFE material. The composite is bonded together to form a sheet material that is sufficiently conformable to provide good seal between surfaces and is sufficiently rigid to make the material easy to handle and install. The material of the present invention is particularly suitable for use as a gasket where rigidity is needed, customization or modification of gasket shape is desirable, and/or where a wide, even sealing surface is sought.
Patent CA-2175063-A1 (CA)
Title: System and Method for Authenticating Software Carriers
Inventor: OSTROVER LEWIS S
IPC: G11B20/04
Filed: 1994-10-13
Abstract: A disk player that will play only authorized disks. Predetermined data blocks, including those in the lead-in section of the disk which contain content related data, are processed to derive an authorization code. The authorization code is stored on the disk in encrypted form, using the private key of a public-key cryptosystem pair. The player processes the same disk data to derive a computed code; the player also uses the paired public key to decrypt the encrypted authorization code on the disk. Play of the disk ensues only if the decrypted authorization code matches the computed code. The same technique can be used to control not play of the disk as a whole, but play in certain specific modes.
Patent CA-2176052-A1 (CA)
Title: Transducer having a resonating silicon beam and method for forming same
Inventor: SEEFELDT JAMES D
IPC: G01L9/00
Filed: 1996-05-08
Abstract: A method of forming apparatus including a force transducer on a silicon substrate having an upper surface, the silicon substrate including a dopant of one of the n-type or the p-type, the force transducer including a cavity having spaced end walls and a beam supported in the cavity, the beam extending between the end walls of the cavity, the method including the steps of: (a) implanting in the substrate a layer of a dopant of said one of the n-type or the p-type; (b) depositing an epitaxial layer on the upper surface of the substrate, the epitaxial layer including a dopant of the other of the n-type or the p-type; (c) implanting a pair of spaced sinkers through the epitaxial layer and into electrical connection with said layer, each of the sinkers including a dopant of the one of the n-type or the p-type; (d) anodizing the substrate to form porous silicon of the sinkers and the layer; (e) oxidizing the porous silicon to form silicon dioxide; and (f) etching the silicon dioxide to form the cavity and beam.
Patent CA-2177330-A1 (CA)
Title: Optical sensor particularly for a track control apparatus
Inventor: SCHRAUWEN HANS JOACHIM
IPC: G01N21/89
Filed: 1996-05-24
Abstract: In an optical sensor having a scanning camera (5) and an objective lens (4) for scanning an area (3) illuminated by a light source, particularly for a track following control apparatus, an optical element (7) is arranged in front of the scanning camera to compensate for disturbance spots by focusing an enlargement of the sensed area onto the scanning camera.
Patent CA-2179718-A1 (CA)
Inventor: BUGGE MOGENS
IPC: A61B19/02
Filed: 1994-12-22
Abstract: L'invention concerne un support (9) de valvules cardiaques artificielles (10-13) qui se caractérise en ce qu'il est solidement fixé à la valvule. Ledit support est conçu pour être enlevé seulement après que la valvule a été placée correctement par voie chirurgicale, par rupture d'une sécurité de transport (17). Ledit support (9) est équipé de moyens de sécurité (20) s'étendant dans la valvule cardiaque (10-13) et conçus pour s'insérer seulement dans un type de valvule cardiaque d'une certaine taille et placée dans une certaine position.
Patent CA-2179978-A1 (CA)
Title: Convertisseur statique d'energie electrique a semi-conducteurs a fonctionnement optimise en mode zero de tension
Inventor: POULIQUEN HERVE
IPC: H02M7/48
Filed: 1996-06-26
Abstract: L'invention concerne la conversion statique d'énergie électrique à semi-conducteurs à fonctionnement en commutation douce en mode zéro de tension et commandés en modulation de largeur d'impulsion, avec une première interface (L, C, Ta, Da) en série entre une entrée à tension continue (E) et un convertisseur (1), et avec une seconde interface (2) reliée à la connexion de la première interface et du convertisseur (1), et agencée pour, juste avant la fin d'une fenêtre de tension d'amplitude (1+k)E, faire passer dans l'interrupteur (Ta, Da) un courant positif contre-carrant le courant d'entrée du convertisseur (1) qui est négatif lorsque le courant d'ondulation dans l'inductance a sa valeur minimale afin de diminuer l'amplitude d'ondulation du courant de blocage de l'interrupteur (Ta, Da) et diminuer ainsi l'ondulation du courant de commande d'interruption du court-circuit assuré par le(s) bras du convertisseur (1).
Patent CA-2182318-A1 (CA)
Inventor: OSTERBROCK JAMES A
IPC: H01R13/53
Filed: 1996-07-30
Abstract: An electrical wiring device, disclosed in the form of a duplex receptacle having the usual cover, body, terminals and mounting strap of the type extending longitudinally of the body rear surface and along the end surfaces. Two pairs of ribs are formed integrally with the body and extend in parallel relation longitudinally of the body rear surface with the strap lying between the two pairs of ribs. The purpose and effect of the ribs is to form a physical barrier of dielectric material and to lengthen the surface distance between the strap and portions of the hot and neutral wires terminated on the sides of the receptacle from which the insulation has been removed, thereby inhibiting electrical contact or arcing between the bare wires and the strap.