baber/WOPTO huggingface dataset:
Patent CA-2010626-A1 (CA)
Inventor: SAMAS MARK V
IPC: B23G5/10
Filed: 1990-02-21
Abstract: ABSTRACT OF THE DISCLOSURE A machine for taper threading the end of a bar (21) such as reinforcing bar used in concrete construction utilizes a power operated vice (40) to clamp and feed the bar end axially into a rotary head (42) which contains chaser tooling holders (116-119) which open uniformly on the bar end as the head rotates. The rotary head is axially stationary but contains an axially movable key or linear cam (134) which engages a readily removable transversely extending control rod assembly (127) in turn moving the chaser holders. Axial movement of the power vice and thus the bar end at a controlled axial speed with respect to the rotary speed of the head moves the key to cause the movement of the chaser holders. The chaser holders in addition to supporting the thread cutting chasers (181) also support ahead of the chaser an indexable triangular insert (180) to pre-cone the bar end. To change the set-up of the machine for different bar sizes the control rod is removed and replaced, and a proper cutting speed for the bar is selected by adjusting the RPM of the head through a transmission. The extent of axial movement of the key may also be controlled to optimize the cycle time of the machine. In this manner all bar sizes may be threaded in a single pass and set-up from bar size to bar size is accomplished quite simply in a short period of time.
Patent CA-2011012-A1 (CA)
Title: Bidirectional corrugated pipe-rib seal
Inventor: ROE STEPHAN L
IPC: F16L17/04
Filed: 1990-02-27
Abstract: BIDIRECTIONAL CORRUGATED PIPE-RIB SEAL  ABSTRACT        A sealing ring made of an elastomeric readily flowable incompressible material utilized for perfecting a seal between the interior surface of a coupling sleeve and the crest of a rib of a section of corrugated plastic pipe,  the sealing ring having a generally flat annular body which in its free form has its major cross-sectional dimension extending radially and being characterized by a series of axially extending ribs, one of which is located on the inner diametrical surface of the ring for securing the ring within the valley between adjacent ribs on the corrugated pipe, a second rib located on the outer circum-ferential surface of the ring for primarily sealing bet-ween the coupling sleeve and  the proximal area of the crest of a rib of the corrugated pipe against infiltration of external fluids and solids, and an intermediate rib for primarily  sealing  between  the  coupling  sleeve  and  the distal area of the crest of a rib of the corrugated pipe against   the  escape  of   fluids   and   solids   flowing therethrough.
Patent CA-2012991-A1 (CA)
Title: Flexible coupling including flexible diaphragm means
Inventor: STOCCO JOSEPH N
IPC: F16D3/72
Filed: 1990-03-23
Abstract: ABSTRACT OF THE DISCLOSURE            FLEXIBLE COUPLING INCLUDING  FLEXIBLE DIAPHRAGM MEANS      A flexible coupling including flexible diaphragm means has at least one and more commonly a plurality of diaphragms having a particular profile. The profile has first and second contoured sections. The first contoured section has a radially-inwardly decreasing thickness  and  extends to near the center of the diaphragm and the second section extends therefrom and has a radially-inwardly increasing thickness such that the bending moment developed by axial deflections is small near the thinnest section or the center of the diaphragm,  and  the  stress  levels  are  minimized throughout the diaphragm.  The diaphragm profile as described  tolerates  greater  axial  deflection  and bending before the fatigue and endurance limits of the diaphragm material are reached than has heretofore been the case.
Patent CA-2013365-A1 (CA)
Title: Pedal operated water cycle
Inventor: FOLEY JOHN J
IPC: B63H20/08
Filed: 1990-03-29
Abstract: Abstract of the Disclosure A main body member is supported by transverse supports on a pair of pontoons.  The main body member supports an operator's seat, a cargo rack,a pedal drive propeller assembly, and a rudder.  The main body member has longitudinal slots in its surfaces that are associated with longitudinal interior sockets for adjustable engagement with the seat, the cargo rack, a support extension for the pedal drive propeller assembly, and the transverse supports.  By means of such adjustable engagement, attachable portions are capable of longitudinal adjustment for establishing the desired trim of the cycle on the water with the operator or operators supported on the seat.  Also, the support extension for the pedal drive propeller assembly is capable of longitudinal adjustment to accommodate the stature of the operator or operators after the plane of buoyancy has been established.  Furthermore, seat and propeller assemblies for one or two persons are capable of being substituted one for the other.  The propeller assembly and rudder are arranged to pivot rearwardly for riding over obstruc-tions and also can be moved to a position above the bottom of the pontoons for moving the cycle up on the beach or a dock,  The parts are capable of being assembled and dis-assembled without the use of tools.
Patent CA-2014406-A1 (CA)
Title: Process and apparatus for the manufacture of large-size porous shaped bodies of low density by swelling
Inventor: VAHLBRAUK WOLFGANG
IPC: B28B1/50
Filed: 1990-04-11
Abstract: ABSTRACT            Process and apparatus for the manufacture of large-size porous shaped bodies of low density by swelling In order to manufacture large-size porous coarse ceramic shaped bodies of low density, a clay-mineral mass of substances which are naturally swellable or are made swellable, such as basalts, pearlites, shales and clays, are uniformly swollen by means of thermal, chemical and mechanical treatment.  Plate-like dried, and, if necessary, pre-heated thin compact clay masses are supported on all sides by rollers with gaps therebetween,  so as to be incapable of expansion laterally and downwardly and expansible only upwardly in the course of the swelling.  The mass is supported at the rear by the unswollen clay mass which is held by means of frictional resistance, and at the front by the already-swollen clay mass which is also held by means of frictional resistance. By supplying heat from above and below between the rollers and by supplying oxidizing gases to the surfaces of the plate-like clay masses, they are heated and swollen until a plate-like shaped body of the desired low density is formed.  By this means one achieves high speed and uniformity of the heating during the swelling operation without caking of the swelling clay mass on the apparatus, a high shape stability of the clay mass during swelling with small forces needed for the shaping and the conveyance of the swelling clay mass, and hence large-size shaped bodies with a uniformly low density and also uniform and high porosity, strength and shape precision which are capable of being manufactured economically.
Patent CA-2015872-A1 (CA)
Inventor: COLLEU RACHEL A A
IPC: G01R19/00
Filed: 1990-05-01
Abstract: Dispositif (C) pour la surveillance d'un signal électrique variable (i).      Selon l'invention, ce dispositif comporte : - des premiers moyens de limitation (L1), qui reçoivent sur leur entrée (E) ledit signal électrique variable surveillé ; - des seconds moyens de limitation (L2) recevant un premier signal électrique limite (imax) pour ledit signal surveillé, et une première référence (imax)min minimale limite pour ledit premier signal électrique limite ; - des troisièmes moyens de limitation (L3) recevant un second signal électrique limite (imin), pour ledit signal surveillé, et une seconde référence (imin)max, maximale limite pour ledit second signal électrique limite ; - lesdits premiers moyens de limitation délivrant à leur sortie : . ledit signal surveillé lorsque celui-ci est compris entre les signaux de sortie desdits seconds et troisième moyens de limitation ; . le signal de sortie desdits seconds moyens de limitation lorsque ledit signal surveillé est supérieur à ce dernier signal ; et . le signal de sortie desdits troisièmes moyens de limitation lorsque ledit signal surveillé est inférieur à ce dernier signal.
Patent CA-2017423-A1 (CA)
Title: Thermotropic copolyesters of 4,4'-biphenyldicarboxylic acid
Inventor: BREWBAKER JAMES L
IPC: C08G63/682
Filed: 1990-05-24
Abstract: ABSTRACT         Disclosed is a copolymer oapable of forming an optically anisotropic melt comprising recurring structural units of formulas I, II III; and IV and optionally V:           I,           II,      III,         IV,       V , 37,907-F     wherein each R is independently hydrogen, halogen, lower alkyl, methoxy or phenyl; R1 is lower alkyl; R2 is independently hydrogen, halogen, methoxy or phenyl.  The present invention also relates to a process for preparing the copolymer.  The copolymers of the present invention usually have a low melting point below 350°C and can be readily melt extruded into fibers, films or the like. 37,907-F
Patent CA-2019287-A1 (CA)
Inventor: REZNIK ISRAEL
IPC: F17C13/12
Filed: 1990-06-19
Abstract: Abstract The protective device prevents overheating, in particular by fire, of individual or batteries of pressure vessels (10) of length (1) equal to at least 1,5 m, employed for storage and/or transportation of gases under high pressure. The essentially cylindrical pressure vessels (10) have at least one closure cap (14) with a valve (18) or a closure plug.    Mounted on one closure cap (14) is a pressure pipe (24) which communicates with the interior of the pressure vessel (10), and is fitted with a controllable venting valve (58) that under normal conditions closes off the pressure pipe (24) or a common pressure pipe (56) and has a venting pipe (60) which terminates outwith the region of the pressure vessel/vessels (10). Temperature sensitive actuating means are provided in the axial direction (A) of the pressure vessel/vessels (10) a spacing (a) apart and connected to the venting valve (58). These means can individually actuate the venting valve (58) should overheating occur.  (figure 1)
Patent CA-2019913-A1 (CA)
Title: Production of vinylidene fluoride from 1,1-difluoroethane
Inventor: BOLMER MICHAEL S
IPC: C07C17/25
Filed: 1990-06-27
Abstract: PRODUCTION OF VINYLIDENE FLUORIDE      FROM 1,1-DIFLUOROETHANE        Abstract of the Disclosure 1,1-Difluoroethane  is  converted  to  vinylidene fluoride by contact with a Cr2O3/Al2O3  catalyst,  in the presence of a co-reactant gas, at a reaction temperature of from about  300°C to  about 700°C.   The co-reactant gas advantageously comprises air,  oxygen,  carbon dioxide,  or mixtures thereof.
Patent CA-2020774-A1 (CA)
IPC: F16H55/50
Filed: 1990-07-09
Abstract: A line releasing pulley system suitable for the remote conveyance of articles such as improvised explosive devices along a complex path requiring many direction changes. The pulley system comprises a pulley frame having a pivoting cheek plate that provides automatic release of the line as a breaker member on the line passes over the pulley.
Patent CA-2023356-A1 (CA)
IPC: H04N1/333
Filed: 1990-08-15
Abstract: A printing apparatus prints image on thermosensible paper by means of thermosensible elements (H1 to Hn).          When printing data is supplied from a central processing circuit (28) to a printing data correcting circuit (52), the printing data correcting circuit performs signal processing referring to printing data supplied in response to shifting operation of a shift register (S).  The printing data is latched in a latch circuit (53) for each printing operation and the latched printing data is stored in the shift register and supplied to the thermosensible elements, whereby the printing data is printed on the thermosensible paper driven by a pulse motor (57).
Patent CA-2025253-A1 (CA)
Title: Refrigerant recovery and recharging device
Inventor: LEBLANC CHARLES B
IPC: F25B45/00
Filed: 1990-09-13
Abstract: ABSTRACT OF THE DISCLOSURE           In a device to recover refrigerant from a refrigeration circuit and subsequently recharge the refrigeration circuit with the recovered refrigerant, the condenser and refrigerant storage means of the device is a cooled tank.  Refrigerant vapour inputs the base of the tank through a one-way check valve so that the entering  vapour  is  cooled  as  it  bubbles  through  any  liquid refrigerant in the tank and then condenses on the cool walls of the tank.
Patent CA-2026604-A1 (CA)
Title: Articulated stent
Inventor: WOLFF RODNEY G
IPC: A61F2/82
Filed: 1990-10-01
Abstract: 66742-340 In a first embodiment a number of stent segments are connected together by hinges welded in place to provide articulation between the stent segments. The hinges can be, among other shapes, either a straight wire or a coiled wire of biocompatable material. A second embodiment uses a stent of a previous invention made up of a number of wires welded together for the stent segments with connection between adjacent stents provided by having one of the wires of adjacent stents continue between these adjacent stents to provide a hinge action. In this embodiment the wire portion extending between the segments is ground to a smaller diameter than the wire of the stent segment itself, to provide the necessary hinge flexibility. This articulated stent, made up of a number of individual stent segments, gives support for curved arteries, with the hinges between the segments providing both articulation and spacing between the stent segments. This articulated stent is tailored to match the curvature existing in the artery and is positioned at the site with the necessary preferred angular orientation using a previous catheter system.
Patent CA-2029166-A1 (CA)
Inventor: PATE ROBERT A
IPC: F41A1/04
Filed: 1990-11-01
Abstract: LIQUID PROPELLANT GUN              ABSTRACT OF THE DISCLOSURE This invention provides a gun having a combustion chamber (combustor) which is filled with a charge of monopropellant or bi-propellant to less than full volume,  (e.g. 30 to 90%) prior to ignition thereof, which is ignited with a tangential flow of ignition gas from the side or rear to establish the desired pattern of combustion gas in the charge.
Patent CA-2030576-A1 (CA)
Inventor: GRIER-IDRIS CARLETTA
IPC: A61B19/08
Filed: 1990-11-23
Abstract: ABSTRACT OF THE DISCLOSURE    Disclosed herein is a two layer fenestrated incise system for surgical drapes and the resultant surgical drape.  The incise system is a two layer structure including a first layer of incise with an adhesive bottom surface for adhering the layer to a surgical drape and/or the skin of a patient.  The first layer of incise further defines a fenestration therein. The second layer of incise is generally coextensive with and releasably attachable to the first layer of incise so as to cover the fenestration of the first layer.     To use the incise system of the present invention the two layer structure is applied to the patient's skin such that the fenestration of the first layer of incise directly overlies the intended incision area.   An incision can then be made directly through the two layers of incise in the area of the fenestration in the first layer.   Once the procedure is completed, the top (second) layer of incise is peeled from the bottom  (first)  layer.   As the top layer is removed,  the fenestration area of the first layer is revealed thereby exposing a portion of the patient's skin surrounding the incision.   As a result,  suturing of the incision is made easier since it is no longer necessary to pick and peel the incise away from the incision to expose sufficient skin to allow suturing without catching the incise in the process.
Patent CA-2032431-A1 (CA)
Inventor: FOCKE HEINZ
IPC: B31B3/00
Filed: 1990-12-17
Abstract: 1. Process and apparatus for producing (cigarette) packs. 2.1. In the production of packs made of (thin) cardboard such as cigarette packs, complex folding processes may cause problems when blank portions are moved to the proper pack position, especially when blank portions are "too long" for the folding process.      To remove this problem, the respective blank portion is, during the folding process, temporarily deformed in a way which shortens its effective length, especially curved in an arched manner. 2.2. In the production of hinge lid packs having a collar (11) attached to a front wall (12) thereof in a single piece, this blank portion is, while being folded from an upright to a horizontal position, temporarily curved by a folding leaver (58) applying pressure until the blank portion reaches the horizontal folding position.
Patent CA-2038057-A1 (CA)
Title: Roller for the transport of widths or sheets of paper
Inventor: DELHAES JOHANNES C
IPC: B65H5/06
Filed: 1991-03-12
Abstract: Abstract For  the  transport  of  widths  or  sheets of  piper roller is suggested  which comprises a roller body with a  cylindrical  casing  and  a  bushing  (1)   which  is surrounded by the casing. The roller body has a coaxial clearance  into which  a  shaft  (3)  is  pressed whilst expanding.  The inside of the bushing (1)  which limits the clearance  is provided with protrusions (2)  which are evenly spaced over  its circumference and   which extend  in the axial direction and face inwards.  When pressing  the shaft  (3)  into the  bushing  (1)  of the roller  body   the protrusions  (2)  are forced to move radially  outwards  and  effect  a  rotationally  secure connection of the roller body to the shaft (3).
Patent CA-2040590-A1 (CA)
Inventor: RAHN CHRISTOPHER D
IPC: B64G1/38
Filed: 1991-04-16
Abstract: The present invention is a method and apparatus to control a pointing trajectory of an aim point with respect to one or more targets for a momentum bias spacecraft in an orbit inclined relative to an equatorial geosynchronous orbit wherein the spacecraft is provided with an onboard computer capable of using orbit information available to the spacecraft and spacecraft hardware to move the aim point according to a predetermined tracking model which may be either time-varying or invariant.  The tracking model allows the controller to remove short-term nutational and long-term orbit rate dynamical disturbances, beyond simple-order sinusoidal functions having a single frequency.
Patent CA-2042209-A1 (CA)
Inventor: ANTHONY THOMAS R
IPC: C23C16/26
Filed: 1991-05-09
Abstract: CVD DIAMOND COATED TWIST DRILLS            ABSTRACT OF THE DISCLOSURE   The present invention is directed to a twist drill which is coated with a layer of CVD diamond and which has slots in its head which are filled with CVD diamond. The inventive twist drill is made by forming slots in the head of the twist drill and then subjecting the slotted twist drill to a CVD diamond deposition process for coating said twist drill with a layer of CVD diamond and for filling said slots with CVD diamond. The performance of CVD diamond-coated twist drills does not depend on retaining the diamond film over most of the areas of the drill; but, rather, drill performance is dependent upon retaining a layer of diamond on the cutting edge of the drill. The diamond-filled slots in the head of the twist drill function as wear stops and additional cutting edges as the surrounding drill material is worn away during use.
Patent CA-2042213-A1 (CA)
Title: Double rate oversampled interpolative modulators for analog-to-digital conversion
Inventor: RIBNER DAVID B
IPC: H03M3/02
Filed: 1991-05-09
Abstract: RD-19,334 DOUBLE RATE OVERSAMPLED INTERPOLATIVE MODULATORS      FOR ANALOG-TO-DIGITAL CONVERSION           ABSTRACT OF THE DISCLOSURE     A circuit transformation that doubles the effective sampling  rate  of  any  switched  capacitor oversampled, interpolative modulator, regardless of its order, employs, in each integrator of the modulator, a second input capacitor and switches that operate on alternate clock phases.   In addition, two quantizers, instead of one, are employed in the network  and  are  operated  on  opposite  clock  phases. Alternatively, the quantizers, can be operated at twice the normal rate if feasible for the particular circuit.   The effective operating rate is thereby doubled without any increase  in  clock  rate  or  circuit  speed  requirements, resulting  in  improved  analog-to-digital  resolution  or conversion rate.
Patent CA-2043237-A1 (CA)
Title: Trimmer shield and mounting
Inventor: HARTWIG JAMES J
IPC: A01D75/20
Filed: 1991-05-24
Abstract: TRIMMER SHIELD AND MOUNTING  Abstract of the Disclosure A shield and structure for mounting the shield to a hand held grass trimmer is provided.  The generally flat shield is perpendicularly mounted to a gear box extension which is carried coaxial with the drive shalt tube.  Twisting and moment forces incurred by the shield when the trimmer is resting on the ground are reduced by mounting the shield to support the weight of the trimmer generally perpendicular to the length of the drive shaft tube.  The mounting structure prevents sliding of the shield on the drive tube and provides multiple attaching members to prevent rotation of the shield on the drive tube.
Patent CA-2043297-A1 (CA)
Title: Thermotrac control of printing press impressions
Inventor: LITTLETON FRANCIS J
IPC: B41F13/34
Filed: 1991-05-27
Abstract: ABSTRACT OF THE DISCLOSURE            A method for controlling the printing efficiency of a printing press by thermally maintaining the optimum orientation of the operating members.  The optimum setting is maintained by thermally adjusting the length of the frame support to maintain an even pressure between printing cylinders and maintain gaps between bearers while the press is in operation.
Patent CA-2046051-A1 (CA)
Title: 2,6-di-alkyl-4-silyl-phenols as antiatherosclerotic agents
Inventor: PARKER ROGER A
IPC: A61K31/695
Filed: 1991-07-02
Abstract: This invention relates to certain 2,6-dialkyl-4-silyl-phenols of the formula:      wherein R1, R2, R3 and R4 are each independently a C1-C6 alkyl group;      Z is a thio, oxy or methylene group;      A is a C1-C4 alkylene group; and R5 is a C1-C6 alkyl or -(CH2)n-(Ar) wherein n is an integer 0, 1, 2 or 3, and Ar is phenyl or napthyl unsubstituted or substituted with one to three substituents selected from the group consisting of hydroxy, methoxy, ethoxy, chloro, fluoro or C1-C6 alkyl; which are useful as inhibitors of LDL lipid peroxidation and as antiatherosclerotic agents.
Patent CA-2046972-A1 (CA)
Title: Flame retardant compositions
Inventor: KEOGH MICHAEL J
IPC: C08K3/22
Filed: 1991-07-12
Abstract: FLAME RETARDANT COMPOSITIONS                    Abstract of the Invention A composition useful in the manufacture of cable comprising:                    (i)  a copolymer comprised of ethylene and vinyl acetate;                   (ii)  a surface treated magnesium hydroxide having (a) a strain in the <101> direction of not more than 3.0 X 10-3; (b) a crystallite size and (c) a surface area, determined by the BET method, of less than 20 square meters per gram; and (iii)  a silicone fluid.
Patent CA-2047066-A1 (CA)
Title: Process for the production of polyethers containing aminophenoxy groups, the compounds obtained by this process and their use as reactants for organic polyisocyanates
Inventor: THIERY URS
IPC: C08G65/32
Filed: 1991-07-15
Abstract: Mo3594 LeA 27,743 A PROCESS FOR THE PRODUCTION OF POLYETHERS CONTAINING AMINOPHENOXY GROUPS, THE COMPOUNDS   OBTAINED BY THIS PROCESS AND THEIR USE AS    REACTANTS FOR ORGANIC POLYISOCYANATES                  ABSTRACT OF THE INVENTION         Disclosed herein is a process for the production of aminophenoxy-terminated polyethers containing recurring structural units corresponding to the following formula comprising reacting: a)   a polyether component consisting essentially of a polyether diol containing the afore-stated recurring structural units, with b)   a nitrobenzene containing hydroxyl-reactive substituent.