baber/WOPTO huggingface dataset:
Patent CA-2013218-A1 (CA)
Inventor: RAWLINGS DAVID L
IPC: G02B1/04
Filed: 1990-03-28
Abstract: A molded plastic cosmetic contact lens made in a repetitive manner comprising a cosmetic pattern of clustered networks of interconnected thin colored lines radiating from and about the periphery of the pupil portion in a direction inclined towards and in contact with the periphery of the iris portion and residing within the iris portion. The lens can be made by molding in a manner that the cosmetic pattern becomes part of the body of the lens.
Patent CA-2013481-A1 (CA)
Title: Load responsive flow amplified control system
Inventor: ST GERMAIN GENE R
IPC: F15B13/043
Filed: 1990-03-30
Abstract: Abstract of the Disclosure Load Responsive Flow Amplified Control System Flow amplified control systems are useful in pilot operated steering systems.  The subject load responsive flow amplified control system includes a directional control valve movable to an operating position to direct fluid from the operating fluid circuit through a variable orifice to a steering motor and to direct control fluid from a control fluid circuit through another variable orifice to be combined with the fluid going to the steering motor. The operating fluid circuit and the control fluid circuit are provided with fluid from a common variable displacement pump.  The directional control valve is moved to an operating position by the control fluid acting thereon and is pressure compensated insofar as the flow of control fluid passing through the another variable orifice such that a substantially constant predetermined pressure differential exists across the another variable orifice.  The rate of fluid flow in the pilot control circuit is determined by a steering control valve and is utilized for controlling the position of the directional control valve.  The displacement of the variable displacement pump is responsive to the pressure condition in the pilot control circuit such that a substantially constant predetermined pressure differential exist  between the variable displacement pump and the load pressure in the steering motor.  The relative size of the variable orifices determines the amplification ratio between the pilot control circuit and the power operating circuit.
Patent CA-2014779-A1 (CA)
Title: Flat-jet nozzle to atomize liquids into comparatively coarse drops
Inventor: BENDIG LOTHAR
IPC: B05B1/04
Filed: 1990-04-18
Abstract: ABSTRACT The invention concerns a flat-jet nozzle for atomizing liquids into comparatively large drops and comprising a nozzle housing with an axial feed passing through it with a severally stepped diameter, this feed being provided at its end with a discharge geometry  with a prismatic milling serving as the nozzle discharge slit.   Moreover an inset with a central throttling bore is mounted in the liquid feed between the liquid intake and the discharge geometry.    A  cylindrical  central  zone  (differential  pressure chamber) of a larger diameter than the discharge geometry's is present in the liquid feed in the nozzle housing.  The inset is provided with deflecting means through which the liquid jet issuing from the throttling bore into the central zone is forced, preferably bilaterally, toward the large axis of the nozzle discharge slit.      The stated features make it possible to atomize a liquid at low pressure, for instance in the range of 1 to 5 bars while   nevertheless   retaining  highly   uniform   liquid distribution and a large jet angle.
Patent CA-2015152-A1 (CA)
Title: Single side repositionable transfer tape
Inventor: KARIM NAIMUL
IPC: C09J7/38
Filed: 1990-04-23
Abstract: ABSTRACT           A pressure-sensitive adhesive transfer tape comprising an adhesion-repellent backing provided on one side with a filler-loaded pressure-sensitive adhesive film. The amount of filler is greater on the backing side than on the off-backing side of the adhesive film, and the types and relative amounts of the filler material and the adhesive are selected to impart to the adhesive film on the low-filler side a relatively high adhesive power, whereby the adhesive film may adhere permanently to an article after having been transferred thereto.  On the high-filler side, the adhesive power of the film is relatively low so that the article may be releasably attached to a substrate together with the adhesive film.
Patent CA-2017889-A1 (CA)
Inventor: MISUDA KATSUTOSHI
IPC: B41M5/52
Filed: 1990-05-30
Abstract: A recording sheet comprises a substrate and a porous layer of ink absorbent formed directly upon the substrate.          The porous layer of ink absorbent consists essentially of pseudo-boehmite and a binder, and the volume of pores with a pore radius exceeding 100 .ANG. in said porous layer is not larger than 0.1 cc/g.  The porous layer may have a double layer structure, the overlayer consisting essentially of silica powder.  The binder preferably is polyvinyl alcohol, and preferably it is present in an amount of from 10 to 50% by weight of the pseudo-boehmite.
Patent CA-2018505-A1 (CA)
Title: Seal assembly for a high speed machining system
Inventor: KOSTRZEWSKI RICHARD A
IPC: F16J15/34
Filed: 1990-06-07
Abstract: A high speed machining system (10) including a machine tool (16) mounted on a hollow shaft (14) rotatable at high speeds and the tool (16) being operable at high feed rates. Liquid cutting coolant (22) flows to the tool (16) through the hollow shaft (14) to flush away debris from the tool (16) and for cooling the system (10). Drive means (18) including windings rotate the shaft (14), which is supported by bearings. The windings and bearings have the characteristic of long life in an environment free of liquid cutting coolant (22). The high speed machining system (l0) includes a seal assembly (30) to prevent the liquid (22) from entering the liquid-free environment of the bearings and the windings. The seal assembly (30) includes annular means for urging (52) a stationary sealing face (42) against and in annular contact with a rotating hardened sealing surface (38) to form an annular primary seal (54) for isolating the liquid (22) from the bearings and windings. First means for sealing (66) are positioned between an enlarged diameter portion of an annular face seal (40) and an inner cylindrical wall (60) of an annular retainer (58) to suppress leakage of liquid (22) therebetween. Second means for sealing (68) are positioned between an outer cylindrical wall (62) of the retainer (58) and a bore (56) defined within a housing (12) to form a tertiary seal (68) and suppress leakage of liquid (22) therebetween. In cooperation, the annular primary seal (54) and the secondary and the tertiary seals (68) cooperate to substantially eliminate leakage of liquid (22) outside the seal assembly (30) when the liquid (22) is flowing through the hollow shaft (14) to the machine tool (16) at sufficiently high pressures and volumes to remove debris from adjacent the machine tool (16), and to cool the high speed machining system (10) while the shaft (14) rotates at high speed. In alternate embodiments of the invention, different structures of seal interface are disclosed. each has the attribute of using the pressure of liquid (22) flowing in the liquid path to augment the annular means (52) for urging the annular face seal (40) against and in annular contact with the hardened sealing surface (38) to form the primary seal (66) therebetween.
Patent CA-2018996-A1 (CA)
Title: Aerosols of pyrido[1,2-a]pyrimidine compounds
Inventor: YAZAKI TAKASHI
IPC: A61K31/505
Filed: 1990-06-14
Abstract: ABSTRACT    A suspension type aerosol inhalations containing (a) 0.015 to 5.00 % (w/w) of a pyrido[1,2-a]pyrimidine compound of the formula:                             where R is a n-propyl or allyl group, A is a tetrazolyl or carboxyl group, and n is a whole number of 0 to 2, and (b) 0.015 to 5.00 % (w/w) of a fatty acid ester.
Patent CA-2021238-A1 (CA)
Title: Aqueously dispersed blends of epoxy resins and blocked urethane prepolymers
Inventor: SQUILLER EDWARD P
IPC: C08G18/28
Filed: 1990-07-16
Abstract: Mo3238CIP   AQUEOUSLY DISPERSED BLENDS OF EPOXY RESINS      AND BLOCKED URETHANE PREPOLYMERS           ABSTRACT OF THE DISCLOSURE The present invention is directed to an aqueously dispersed, ambient temperature curable composition containing a)   an epoxy resin which is rendered water-dispersible by chemically incorporated emulsifiers and/or by being admixed with external emulsifiers and b)  an isocyanate-terminated prepolymer i)   which is rendered water-dispersible by chemically incorporated emulsifiers and/or by being admixed with external emulsifiers, ii)  which is prepared from a mixture containing a polyisocyanate and a compound having a molecular weight of at least 500 and at least two hydroxyl groups and iii) wherein the isocyanate groups are blocked with a phenolic compound. The present invention is also directed to a process for preparing polyurethanes by reacting the above blends with polyamines at ambient or elevated temperature and to the polyurethanes produced therefrom.         Mo3238CIP
Patent CA-2021459-A1 (CA)
Title: Battery operated radio receiver
Inventor: GERKE DAVID B
IPC: H04B1/08
Filed: 1990-07-18
Abstract: ABSTRACT OF THE DISCLOSURE     A special purpose battery-operated radio receiver to operate in conjunction with earphones for limited range reception.          The receiver comprises a housing with audio level adjustment and band selection dials mounted on the housing.   A tuner mounted within the housing is associated with the band selection dial.  The tuner is pre-set to select any one of a predetermined number of radio frequency bands.   An open,  battery-receiving pocket is provided within a side of the housing, with the pocket having sides circumscribing a base.   Battery contact means are electrically associated with the tuner and positioned on a side of the battery-receiving pocket.    An  audio  contact means  for  earphones  is electrically associated with the tuner and positioned in the battery pocket.   The battery pocket and audio contact means provided within it makes it possible to provide a member of the public, such as a bus passenger or a spectator at an athletic or other event with a limited power battery and earphone combination for a nominal charge, which battery and earphones can be returned or  discarded, as desired, at the end of the passenger's trip or spectator's athletic or other event.
Patent CA-2021852-A1 (CA)
Title: Flexible ducting
Inventor: EAGLETON ANTHONY C
IPC: F24F13/02
Filed: 1990-07-24
Abstract: Flexible  ducting  having  a  substantially  oval   and/or elliptical   cross-section   comprising   an  intermediate section and an end section to each end of the intermediate section.   The  intermediate  and end section defining two ducts where the ducts  in  the  intermediate  section  are separated  along  their  length by a web extending between opposed sides of the intermediate section and the ducts at each end section being formed as separate tubular members. An engaging  means  is  provided  along  the  intermediate section for  engagement  with  a  suspension  means,  and coupling means is provided around the ducting at the  ends of  the  intermediate  section.   The  tubular members are capable of being retracted into the  intermediate  section to  form  a female end or extending beyond the end of the intermediate section to form a male end of the ducting.
Patent CA-2022008-A1 (CA)
Title: Drum brake service tool and method of using the same
Inventor: CARRUTHERS VINCENT E
IPC: B60S5/00
Filed: 1990-07-26
Abstract: ABSTRACT       A drum brake service tool and a method of using the same is disclosed.  The tool comprises a lever having a pair of spaced, parallel arms disposed at one end thereof, the arm lying in the plane of the lever which is substantially parallel to the width of the lever; the arms being adapted to receive a brake spring substantially perpendicularly therebetween.  A brake-spring retaining mechanism is disposed proximate the free end of each of the arms to prevent the spring from accidentally disengaging from the tool when it is pivotted on the cam.  The retaining mechanisms lie parallel to each other and substantially perpendicular to said plans of the lever and are disposed to engage the coils of the brake spring as the spring is passed over the brake-spring pin of one of the first or second brake shoes.  The brake-spring is then engaged in between the arms of the lever.  The lever is pivotted on the cam to extend the brake-spring to the point that the other free end of the spring lies proximate the brake-spring pin of the second brake shoe.  The free end of the spring is then engaged with the pin of the second brake shoes.  The tool may also be used to remove or install a brake roller in the brake shoes.  In this instance the tool is provided with a pair of L-shaped spurs mounted substantially parallel to each other on two sides of the lever, said sides being perpendicular to the width of the lever and said spurs being disposed spaced a distance from each other which is being substantially equal to said width of the lever.  The spurs are adapted to receive a brake shoe therebetween so as to allow the brake shoe to be removed a sufficient distance from the cam to allow a brake roller to be installed or removed therefrom.  It is only necessary to use one hand to operate this tool, leaving the other hand free to position the brake-spring or brake roller for installation or removal."
Patent CA-2022165-A1 (CA)
Inventor: CHANG CHONG E
IPC: A61K38/00
Filed: 1990-07-27
Abstract: There is provided in accordance with the practice of this invention a process for separating albumin from an impure protein fraction containing albumin. Contaminants, in an aqueous solution of the impure protein fraction containing albumin, are precipitated from the solution at a pH of from about 4.5 to about 4.7. Additional contaminants that remain soluble are bound to an anion-exchange resin.      After the precipitated and anion-exchange-bound contaminants are removed from the albumin-containing solution, the pH of the solution is adjusted to from about 4.7 to about 6.1, and additional contaminants are precipitated. Further contaminants are then bound to an anion-exchange resin, and these precipitated and anion-exchange-bound contaminants are removed from the albumin-containing solution.
Patent CA-2023870-A1 (CA)
Title: Palladium alloy electroplating process
Inventor: ABYS JOSEPH A
IPC: C25D3/50
Filed: 1990-08-23
Abstract: PALLADIUM ALLOY ELECTROPLATING PROCESS Abstract An electroplating process is described for electroplating alloys of palladium and arsenic. The resulting electrodeposits are bright, ductile and remain ductile and crack-free even when the electrodeposits are quite thick. The deposits are quite hard and suitable for contact surfaces particularly in situations where wear characteristics require thick deposits. The electroplating process is also useful for making articles such as bellows by electroform procedures particularly since theelectroplated material has extraordinary physical properties (good resilience, low stress and ductility) as well as good corrosion resistance.
Patent CA-2024256-A1 (CA)
Title: Polyester resin composition and process for the preparation thereof
Inventor: MITSUUCHI MASAMICHI
IPC: C08K7/14
Filed: 1990-08-29
Abstract: ABSTRACT      Polyester compositions exhibiting decreased distortion (warpage), improved processablilty and productivity are produced by melt-blending a thermoplastic polyester resin with between 3 to 65% by weight of a fibrous reinforcement medium, and between 3 to 65% by weight of binder-agglomerated glass granules.
Patent CA-2024393-A1 (CA)
Title: Water closet flushing apparatus
Inventor: TSUTSUI OSAMU
IPC: E03D5/10
Filed: 1990-08-31
Abstract: ABSTRACT A water closet flushing apparatus provided with a pressure detector mounted along a water supply pipe, an opening and closing apparatus to open and close a water supply passage provided along the water supply pipe and a control apparatus that uses the pressure detected by the pressure detector to control the opening and closing operation of the opening and closing apparatus so that a predetermined amount of water is supplied to the water closet.
Patent CA-2024627-A1 (CA)
Title: Oxazolidinones and-thiones as plant-growth-regulators
Inventor: LANG ROBERT W
IPC: C07D263/24
Filed: 1990-09-05
Abstract: PS/5-17735/1+2/=            Novel Oxazolidinones and -thiones as Plant- Growth- Regulators Abstract 3-Phenyl-oxazolidine-2-one- and -2- thione-5-carboxylic acid-derivatues of the formula I below in all their stereoisometric forms, are suitable for regulating plant-growth.                                                        (I) In this formula X is oxygen or sulfur, A is -COO R1, -COS R1, -COO?M?CONR2R3 or COCl, R is hydrogen, halogen, mono-, di- or trihalomethyl, n is 1, 2 or 3, R1 is hydrogen, C1-C4 alkyl, C2-C6 alkenyl or C2-C6 alkynyl R2 and R3 independendently of each other are hydrogen C1-C4 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C3-C7 cycloalkyl, aryl or heterocyclyl or R2 and R3 together with the nitrogen atom, to which they are bonded, are a saturated 3- to 7 membered heterocycle, which is optionally substituted up to three times by C1-C4 alkyl, and M? is the equivalent of an alkali-metal cation or an alkaline earth metal cation or HN?(R2)3.            The invention comprises the preparation and use these compounds.
Patent CA-2026487-A1 (CA)
Title: Ternary azeotropic compositions of 1,1-dichloro-1,2-difluoroethane and trans-1,2-dichloroethylene with methanol, ethanol or isopropanol
Inventor: MERCHANT ABID N
IPC: C23G5/032
Filed: 1990-09-28
Abstract: TITLE            TERNARY AZEOTROPIC COMPOSITIONS OF 1,1-DICHLORO-1,2-DIFLUOROETHANE AND  TRANS-1,2-DICHLOROETHYLENE WITH METHANOL, ETHANOL OR ISOPROPANOL     ABSTRACT OF THE INVENTION            Azeotropic mixtures of 1,1-dicloro-1,2-difluoroethane (HCFC-132c) with trans-1,2-ddichloroethylene (T-CFC-1130) and methanol or ethanol or isopropanol, the azeotropic mixtures being useful in solvent cleaning applications.
Patent CA-2027244-A1 (CA)
Title: Digital telephone system circuits
Inventor: WISNIEWSKI JAMES J
IPC: H04J3/12
Filed: 1990-10-10
Abstract: A telephone system uses above voice-band ASK control and supervisory signals which are appended to digitally encoded voice by forcing the least significant bits to a selected level for transmission to the receiving end. At the receiving end, the ASK is regenerated by a circuit including special filter. To eliminate audible noise resulting from the filter action, the ASK signal is applied to a shaping circuit which shapes the leading and trailing ASK envelope into a gradually increasing and decreasing envelope. To detect the proper number of pulses in the signal, a threshold detector is used which follows the envelope, ignoring peaks of low amplitude after peaks of high amplitude.
Patent CA-2028248-A1 (CA)
Inventor: KUDELSKI ANDRE
IPC: H04N7/167
Filed: 1990-02-21
Abstract: According to the invention, on the emitter side, a number generator (10) delivers a random code (XAL) which is sent to the input of a master card (11) which ciphers such code according to a predetermined key (100), the code thus ciphered is broadcast with the video signal, a first device (17) receives on the one hand the random code (XA) and on the other hand the code ciphered by the master card (11) and effects a predetermined numerical combination of these two codes, such combination forming the initialization word of a pseudo-random generator (12) intended to provide a table of codes for scrambling the video signal and, on the receiver side, the ciphered code received is deciphered by a customer card (13), a second device (18) receives at the inputs on the one hand the ciphered code and on the other hand the code deciphered (XA) by the customer card (13) and effects a numerical combination of these two codes which is similar to the combination of the first device (17).
Patent CA-2031387-A1 (CA)
Inventor: TANAKA MASATO
IPC: G11B23/06
Filed: 1990-12-03
Abstract: The magnetic tape cassette of the present invention has the opening portion into which the head drum having the rotary head is inserted.  The pair of tape guide members which guide the tape-like record medium so that the record medium is helically wrapped around the head drum are provided in the inside of the opening portion so as to be able to swing independently.  Thus, when the head drum is inserted into the opening portion, the two tape guide members are brought in circumferential contact with the peripheral surface of the head drum accurately.  Therefore, the recording and/or reproduction can be reliably carried out, which can increase reliability of the magnetic tape cassette.
Patent CA-2031436-A1 (CA)
Title: Stabilized, chlorine-containing composition
Inventor: HARTMANN OLAF-RENE
IPC: C08K5/098
Filed: 1990-12-04
Abstract: Stabilized, chlorine-containing composition Abstract of the disclosure Compositions containing a) at least one chlorine-containing polymer, b) at least one blowing agent or foaming agent, c) at least one sterically hindered amine, and d) at least one zinc, calcium/zinc and/or barium/zinc compound, and foamed articles obtained by expanding the compositions, have good thermostability.
Patent CA-2033168-A1 (CA)
Inventor: ATTRIDGE JOHN W
IPC: G01N33/543
Filed: 1990-06-21
Abstract: PCT No. PCT/GB90/00953 Sec. 371 Date Dec. 19, 1990 Sec. 102(e) Date Dec. 19, 1990 PCT Filed Jun. 21, 1990 PCT Pub. No. WO90/15985 PCT Pub. Date Dec. 27, 1990.The invention relates to a method of optical analysis which can advantageously be used in conjunction with optical assay techniques, particularly those wherein evanescent signals are to be analysed. The method makes use of the properties of an optical structure (described herein) which allows easy angular discrimination of optical signals emerging from a test object. The invention also relates to apparatus for use in said methods.
Patent CA-2033712-A1 (CA)
Title: Doctor device for the self-washing inking unit of a rotary printing press
Inventor: ROGGE DIETER
IPC: B41F31/02
Filed: 1991-01-07
Abstract: Abstract of the Disclosure.          A doctor device for the washing inking unit of a rotary printing press consists of a doctor carrier on which two doctor blades are attached which are parallel to each other and are able to be put into engagement with an inking roller and which together with the inking roll, the doctor carrier and sealing means provided at the end thereof define a sealed ink chamber. The ink is supplied to and removed from the ink chamber through ducts. The doctor carrier is able to be brought into engagement with the inking roller by setting means. In order to ensure that no ink is able to escape from the ink chamber even when the doctor device oscillates, the sealing means consist of moldings (19) or elastic or elastomeric material, which on their side facing the inking roller have dihedral downwardly sloping surfaces (20 and 21) for the end parts of the doctor blades and between the same a curved sealing surface (26) with the shape of a cylindrical shell able to be brought into engagement with the inking roll, said sealing surface have a radius of curvature corresponding to the inking roller (figure 5).