baber/WOPTO huggingface dataset:
Patent CA-1289128-C (CA)
Inventor: BESIK FERDINAND K
IPC: F25B17/12
Filed: 1987-06-30
Granted: 1991-09-17
Abstract: TITLE: REGENERATIVE BED HEAT EXCHANGER                    INVENTOR: F.K. BESIK                 ABSTRACT OF THE DISCLOSURE          A heat exchanger has two regenerative beds and two valves connected to the beds for controlling the flow through them. Each valve has two ports connected to the  beds  and  two  other  ports.  The  valves  are mechanically linked and actuated together.  The valves serve to alternate two gas flows between the two beds, to effect heat and moisture transfer between the gas flows.  Each valve has two valve members mounted on a common valve shaft controlling the connections between its ports.
Patent CA-1289239-C (CA)
Inventor: HAZARD MICHEL
IPC: H04L9/00
Filed: 1987-07-10
Granted: 1991-09-17
Abstract: PCT No. PCT/FR87/00271 Sec. 371 Date Feb. 10, 1988 Sec. 102(e) Date Feb. 10, 1988 PCT Filed Jul. 9, 1987 PCT Pub. No. WO88/00742 PCT Pub. Date Jan. 28, 1988.The subject of the invention is a method for certifying the authenticity of a datum exchanged between two devices connected locally or at long distance by a transmission line. The transmitting device (2) fashions an enciphered message (M) on the basis of a parameter (X) at least one field (X1) of which must satisfy a predetermined condition and one field (X3) corresponds to the datum (d) to be transmitted. The receiving device (1) deciphers the message (M) in order to find a parameter (X') the field (X'1) of which must satisfy the same condition as the field (X1) for which the field (X'3) corresponds to the datum (d) transmitted. The invention is applicable in particular to credit cards.
Patent CA-1306615-C (CA)
Inventor: HEINE CHARLES F
IPC: F16F15/121
Filed: 1987-08-17
Granted: 1992-08-25
Abstract: Abstract of the Invention A  torsional  sleeve  coupling  provides  a  spring system  for  dampening  torsional  vibrations   in a driveline   coupling   during   low   torque   modes   of operation.   In  a preferred  form,  the  coupling  is adapted  for  use  with  a driving  and  a driven  shaft which are coaxially aligned.  The coupling includes a lost motion connection  for  torsionally coupling  the driven and driving shaft ends for joint rotation.  In a preferred embodiment,  the  coupling  incorporates  a sleeve which  contains  a C-spring  having  an  annular metallic body positioned in coaxial registration with one  of  the  shafts.   The  spring  includes  a pair  of spaced,  radially oriented ears.   The  sleeve and the shaft  about  which  the  spring  is  positioned  each contain a slotted portion.  The two slotted portions are in radial alignment with each other, and each is adapted to receive both of the ears of the spring.
Patent CA-1280928-C (CA)
Inventor: O'CONNOR PATRICK L
IPC: E01C21/00
Filed: 1987-09-11
Granted: 1991-03-05
Abstract: Abstract of the Disclosure A method for repairing an opening formed in and below a section  of  pavement,  comprising  the  steps  of  partially filling the opening with an unshrinkable filler material such that an upper surface of the filler material is near a lower surface of the section of pavement, heating an upper portion of the filler material so that the upper portion is substantially  dried  and  becomes  set,  and  substantially immediately  thereafter  making  a  permanent  path  in  the pavement section above the dried filler material.
Patent CA-1307914-C (CA)
Title: Production of ceramic and ceramic-metal composite articles with surface coatings
Inventor: NEWKIRK MARC S
IPC: C04B41/88
Filed: 1987-09-15
Granted: 1992-09-29
Abstract: ABSTRACT       The invention comprises a method of making self-supporting ceramic and ceramic composite structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product.  This reaction or growth is continued to form a thick, self-supporting ceramic or ceramic composite body. The body is recovered and in a separate subsequent operation, at least a portion of a surface is coated with one or more materials in order to effect desired changes in the properties of the surface, e.g., hardness, corrosion, resistance.
Patent CA-1316741-C (CA)
Title: Electrophotographic toner
Inventor: HIRAYAMA NOBUHIRO
IPC: G03G9/08
Filed: 1987-11-25
Granted: 1993-04-27
Abstract: Abstract This invention discloses electrophotographic toners and the methods for their preparation.  The electrophotographic toners contain resin and coloring agents as primary components.  The resin is a non-crosslinked polymer of vinyl monomers or its mixtures, and has a number average molecular weight (Mn) of 2,000 - 15,000, a Z average molecular weight (Mz) of not less than 400,000 and Mz/Mn of 50 - 600.          The electrophotographic toners exert an excellent fixing ability at high duplication speed or at lower temperatures.
Patent CA-1313540-C (CA)
Title: Nerve fiber stimulation using symmetrical biphasic waveform applied through plural equally active electrodes
Inventor: HARRIS FRANK W
IPC: A61N1/34
Filed: 1988-01-26
Granted: 1993-02-09
Abstract: NERVE FIBER STIMULATION            USING SYMMETRICAL BIPHASIC WAVEFORM      APPLIED THROUGH PLURAL EQUALLY ACTIVE ELECTRODES       Abstract of the Disclosure Nerve fiber stimulation is disclosed using a symmetrical biphasic waveform applied through plural active electrodes to increase the activity of the nerve fibers then selected for stimulation.  Bi-phased pulse pairs are repeatedly symmetrically generated and applied to the nerve fibers to be stimulated with the first pulse of each pulse pair being a positive polarity pulse applied through a first electrode to cause the nerve fibers to be set into the refractory period and with the second pulse of each pulse pair being a negative polarity pulse applied through the first electrode to occur substantially at the end of the refractory period for the nerve fibers then to be stimulated to thereby excite those nerve fibers.  The pulse pairs are also applied in inverted polarity through a second electrode with the inverted second pulse thus resulting in an applied positive pulse at the second electrode to cause the nerve fibers to be stimulated to be set into the refractory period and with the inverted first pulse of the succeeding pulse pair resulting in an applied negative pulse at the second electrode occurring substantially at the end of the A     refractory period for the particular nerve fibers to be stimulated to thereby excite those nerve fibers.    A
Patent CA-1281426-C (CA)
Inventor: OOTA SHINGO
IPC: G06F17/16
Filed: 1988-03-03
Granted: 1991-03-12
Abstract: ABSTRACT    Disclosed is a vector calculation circuit for use in carrying out a vector calculation to provide a result of the vector calcu-lation in response to a first vector composed of a plurality of first-set components and a second vector composed of a plurality of second-set components and selectively to a third vector com-posed of a plurality of third-set components.  The vector calcu-lation circuit comprises: a selecting device responsive to one of the third-set compon-ents and a fixed value of zero for selecting, as a selected com-ponent, a selected one of the one of the third-set components and the fixed value; a carry save adder responsive to the selected component and requisite ones of the first-set and the second-set components for carrying out a carry save addition among the selected com-ponent and the requisite ones of the first-set and the second-set components to produce a local sum and a carry collectively as a result of the carry save addition; an additional adder responsive to the local sum and the carry for adding the carry to the local sum to produce a primary sum of the local sum and the carry; and a device for producing the primary sum as the result-of vector calculation.
Patent CA-1298007-C (CA)
Title: Roofing composition
Inventor: FUTAMURA SHINGO
IPC: C08L23/18
Filed: 1988-03-23
Granted: 1992-03-24
Abstract: Abstract of the Disclosure A roofing composition comprising a blend of a thermoplastic elastomer containing at least two polymer blocks wherein one of said polymer blocks is a crystalline polymer block and one of said polymer blocks is an amorphous polymer block, and a vulcanizable elastomer selected from the group consisting of EPDM, butyl, neutralized sulfonated EPDM, neutralized sulfonated butyl and mixtures thereof.  The roofing compositions have particular application as roofing membranes (i.e. roof sheeting) or roof flashing materials.            FJT:5176B/t
Patent CA-1303809-C (CA)
Inventor: KOBAYASHI SADAO
IPC: B23B5/00
Filed: 1988-05-20
Granted: 1992-06-23
Abstract: ABSTRACT OF THE DISCLOSURE         An   automatic   flash   removing   apparatus, according to the present invention,  comprises a flash removing cutter edge carried by a cutter holder.   The cutter holder is movable with carrying the cutter edge relative to a molded product.   On the other hand, the molded product is supported on a product support which can drive -the product relative to the cutter edge so that  the portion of  the product having  flash to be removed is placed in opposition to the cutter edge.  The cutter holder is associated with a pressure regulator means for adjusting pressure to depress the cutter edge toward the product.   Regulated depression pressure may avoid fluctuation of smoothness of  the product after removing the flash.
Patent CA-1331904-C (CA)
Title: Epoxy compounds and epoxy resin compositions containing the same
Inventor: TAKATA TOSHIMASA
IPC: C08G59/06
Filed: 1988-05-27
Granted: 1994-09-06
Abstract: ABSTRACT OF THE DISCLOSURE          Disclosed is a novel epoxy compound of the chemical structure:                                                (A) (wherein n is the number of recurring units and has a value in the range of from 0 to 30, R1 and R2 are independently selected from the group consisting of hydrogen and alkyl radicals having 1 to 6 carbon atoms, R3 is an alkyl radical having 1 to 6 carbon atoms, and R4 is a tertiary alkyl radical). Also disclosed is an epoxy resin composition comprising the epoxy compound, a curing agent and a curing accelerator. The composition cures into a product having a low dielectric constant and may be used for example as an electrical insulating material, an adhesive or a coating composition.
Patent CA-1298378-C (CA)
Title: System for data transmission
Inventor: VAN DE PAS LEO
IPC: G01F23/62
Filed: 1988-06-28
Granted: 1992-03-31
Abstract: ABSTRACT OF THE DISCLOSURE:       System for the transmission of data in a measuring instrument in which a measuring device is being introduced in a medium in order to measure specific properties thereof and with which these measuring data are being transmitted.   The s y s t em  primarily consists of the combination of an autonomous and active measuring device;     a freely movable electrically conductive element     with which the measuring device     is connected; a signal receiving unit     where through or along which, the electrically conductive element, w i t h o u t   making physical or galvanic contact, can move freely; a signal processing unit      which is electrically connected with the signal receiving unit     and a direct or indirect electric connection between the electrically conductive and freely movable element     and the medium to be tested.
Patent CA-1337135-C (CA)
Inventor: GERKIN RICHARD MICHAEL
IPC: C08G18/66
Filed: 1988-06-29
Granted: 1995-09-26
Abstract: The present invention provides elastomers which employ a novel class of amines especially designed for reaction with isocyanates to form polyureas and polyurethane-ureas.  These amines are N-(polyoxyalkyl)-N-(alkyl)amines generally formed by reacting an alcohol with a primary amine and/or secondary amine in the presence of an appropriate catalyst, such as a nickel catalyst.
Patent CA-1311459-C (CA)
Title: Composite helicopter rotor hub
Inventor: FERRIS DONALD L
IPC: B64C27/35
Filed: 1988-07-08
Granted: 1992-12-15
Abstract: Abstract Composite Helicopter Rotor Hub A fiber reinforced braided composite main helicopter rotor hub retention plate whose fiber orientation withstands forces both in the plane of the retention plate and normal to the plane.  The retention plate comprises a fiber reinforced resin braided tubular ring having substantially circumferential fibers interwoven with angled fibers disposed about a central core.  Arms extend inward from the braided ring for attachment to a driveshaft.
Patent CA-1323221-C (CA)
Title: Multifocal birefringent lens system
Inventor: FIALA WERNER J
IPC: G02B27/00
Filed: 1988-08-31
Granted: 1993-10-19
Abstract: ABSTRACT OF THE DISCLOSURE A multifocal birefringent lens system is described together with applications of the lens system such as ophthalmic lenses (including those of the intraocular, contact and spectacle type) and optical instruments and devices including photographic cameras, telescopes, microscopes, copiers, spectrographic instruments, etc.
Patent CA-1299223-C (CA)
Title: Snowmobile ski suspension strut
Inventor: BLANCHARD YVES
IPC: B62M27/02
Filed: 1988-09-15
Granted: 1992-04-21
Abstract: Abstract of the Disclosure A ski suspension strut for a snowmobile comprises: upper and lower telescopically arranged members guided for a predeter-mined range of relative axial movement but constrained against relative rotation.  The lower member is of cylindrical profile and is rotatably supported in a fixed generally upright orientation by mounting means in the snowmobile.  One end of the lower member is connected to a snowmobile ski and the second member is connected to a steering mechanism in the snowmobile to be rotated thereby in effecting steering movement of the ski.  Damper means is located interiorly of the lower member and operatively connected to both members to dampen relative axial movement thereof.  Linear bearing means are mounted in the lower member in sliding engagement with a section of the upper member that is of constant square profile over a suitable length.
Patent CA-1291534-C (CA)
Title: Level measurement for storage silos
Inventor: COURNANE THOMAS C
IPC: G01F23/284
Filed: 1988-09-16
Granted: 1991-10-29
Abstract: LEVEL MEASUREMENT FOR STORAGE SILOS                ABSTRACT OF THE DISCLOSURE           An  elegonated cable  has  a  length equal  to the height of the silo,  whereby,  when the cable is disposed in the silo,  it extends from the top end to the bottom end of the  silo.    An  electric  generator  for  generating  an AC electric  signal  is  automatically  and  continuously  swept through a pre-selected frequency range.  The generator means being  connected to  the top  end of  the cable  to thereby transmit the generated signal along the cable.   Thus,  when the generated signal is transmitted along the cable and the frequency  of  the  generated  signal  is  automatically  and continuously swept,  peak  voltages will occur at frequency intervals,  the frequency intervals being a function of the level of material.    The  frequency intervals are detected whereby to determine the level of material.    Interference signals are eliminated by an adjustable impedance device at the bottom end of the cable.
Patent CA-1315023-C (CA)
Inventor: OHTA KENJI
IPC: G03F1/00
Filed: 1988-09-29
Granted: 1993-03-23
Abstract: 3825 A photo-mask comprises a light-permeable substrate, a plurality of light-shielding films that are disposed on the substrate, the light-shielding films forming a mask pattern, and a light-permeable protective film that is disposed over the surface of the substrate including the light-shielding films so as to protect the light-shielding films.
Patent CA-1332858-C (CA)
Inventor: O'DWYER JAMES B
IPC: C08G18/80
Filed: 1988-10-13
Granted: 1994-11-01
Abstract: An abrasion and solvent resistant polyurethane protective coating for bilayer windshields is formulated by the reaction of a polyester or polyether diol with an aliphatic isocyanate-terminated prepolymer.
Patent CA-1332032-C (CA)
Inventor: YASOSKY JOHN J
IPC: A21D2/14
Filed: 1988-11-10
Granted: 1994-09-20
Abstract: ABSTRACT OF THE DISCLOSURE            The texture of high sugar, relatively low moisture, flour based products baked in a microwave oven can be controlled by regulating the steam retention capabilities of the batter.  The steam retention capabilities of the batter can be affected by the use of an emulsifier in the batter.
Patent CA-1314054-C (CA)
Title: Process for the preparation of phenyl ureas
Inventor: GOODALL BRIAN L
IPC: C07C273/18
Filed: 1988-11-14
Granted: 1993-03-02
Abstract: ABSTRACT        PROCESS FOR THE PREPARATION OF PHENYL UREAS      A process for the preparation of phenyl ureas, which comprises reacting a nitrobenzene with an amine and carbon monoxide at an elevated temperature in the presence of a palladium catalyst, the amine being supplied continuously or stepwise during the period of the reaction.
Patent CA-1299879-C (CA)
Title: Machine for collecting ground particles and the like
Inventor: HANSEN LOREN F
IPC: A01D51/00
Filed: 1988-12-13
Granted: 1992-05-05
Abstract: ABSTRACT OF THE DISCLOSURE    A machine  for gathering and collecting particles from a ground surface or the like includes an upwardly inclined conveyor or elevator mounted on the side of a transport vehicle and having a  lower  receiving  end  cooperative  with  forwardly  diverging gathering arms which guide particles on the ground surface to the receiving end of the conveyor for transfer to an upper conveyor end where the particles are discharged into a receptacle.  The conveyor is supported on the transport vehicle by a rigid trues frame arrangement including  upper and lower pivot arms having ball joint connection to the conveyor so as to allow rotation of the  conveyor  substantially  about  its  longitudinal  axis  in response to changes in ground contour.  The conveyor is movable between  lowered  operating  and  raised  transport  positions. Counterbalance springs limit the contact force of the conveyor acting on the ground surface during operation.
Patent CA-1288817-C (CA)
Title: Automatic circuit tester control system
Inventor: RUSSO JOHN L
IPC: G01R31/3183
Filed: 1989-01-05
Granted: 1991-09-10
Abstract: Abstract of the Disclosure Apparatus for providing high speed control of digital test patterns in automatic test equipment, the apparatus including a data random access memory (RAM) storing data of nonsequential vectors, a sequential data memory storing blocks of data of sequential vectors, the sequential data memory having higher capacity than the data RAM, a formatter for receiving data from the data RAM or the sequential data memory and using it to provide inputs to a circuit under test, and a sequence controller controlling selective routing of data from the data RAM or the sequential data memory to the formatter.
Patent CA-1317695-C (CA)
Title: Elastomeric polyarylate graft copolymers
Inventor: DEAN BARRY D
IPC: C08G81/02
Filed: 1989-02-16
Granted: 1993-05-11
Abstract: ELASTOMERIC POLYARYLATE GRAFT COPOLYMERS                        ABSTRACT      Novel thermoplastic elastomeric graft copolymers, formed via a cycloaddition reaction of an elastomer con-taining carbon-carbon double bonds with an aromatic poly-ether, end-capped with a 1,2-dihydroarylcyclobutenyl moiety, are described.  The materials exhibit improved UV and thermal oxidative stability, attractive mechanical proper-ties, and superior heat resistance.  They are uniquely suited for impact modification of various thermoplastics such as polyesters, polyether imides, and the like.               S P E C I F I C A T I O N
Patent CA-1316518-C (CA)
Title: All plastic display hook with locking feature
Inventor: GLICKMAN JOEL I
IPC: A47F5/08
Filed: 1989-02-21
Granted: 1993-04-20
Abstract: ALL PLASTIC DISPLAY HOOK WITH LOCKING FEATURE          Abstract of the Disclosure A merchandise display hook for apertured panelboard displays, preferably  of  all-plastic  construction  for manufacture by  injection molding,  is provided with an optionally useable locking key which is installed after mounting of the display hook, to prevent accidental removal thereof.   The base of the display hook is formed with a rearwardly opening guide channel arrangement which provides for the reception and guidance of front and back guide legs for the locking key, by means of which the key is installed on and secured to the display hook.  Provision is made for removal of the key, when necessary, by insertion of a small tool.
Patent CA-1267545-C (CA)
Title: Building block
Inventor: ELIAS ANTHONY J P
IPC: E04C1/00
Filed: 1989-02-23
Granted: 1990-04-10
Abstract: ABSTRACT OF THE DISCLOSURE A relatively simple, inexpensive building block for use in self-supporting walls includes a rectangular parallelepipedic body formed of a mixture of three parts by weight cement to two parts by weight wood fiber. Vertically extending grooves and in some cases cylindrical holes are provided in the blocks for defining vertical passages extending the height of the wall for receiving reinforcing rods and/or concrete for strengthening the wall.
Patent CA-1331495-C (CA)
Title: Adhesive for low temperature applications
Inventor: BRIGGS PAUL C
IPC: C09J151/00
Filed: 1989-07-28
Granted: 1994-08-16
Abstract: ADHESIVE FOR LOW TEMPERATURE APPLICATIONS       Abstract of the Disclosure Adhesive  compositions  are  made  from  methacrylate  ester monomers, elastomeric polymers having a Tg below -25°C and  which are soluble in the monomers,  core-shell polymers which swell  in the monomers  but  do  not dissolve  therein,  and  free  radical producing catalysts.  These  adhesive compositions  when used  in bonded assemblies  exhibit a  combination of  high adhesive  bond impact strength and high bulk tensile elongation.
Patent CA-1326715-C (CA)
Inventor: CULLEY PAUL R
IPC: G06F13/42
Filed: 1989-08-22
Granted: 1994-02-01
Abstract: COMPUTER SYSTEM WITH SIMPLIFIED MASTER REQUIREMENTS                 Abstract A computer system which utilizes two different sets of address control and state information signals for transferring information of the same or different widths is disclosed.  The use of two sets of signals allows master units to utilize only one set and a system board determines when the second set of signals must be used to complete the transfer and controls the second set of signals as necessary.   The system board provides the necessary information routing and latching to properly transfer the information.
Patent CA-1328955-C (CA)
Inventor: CHAPMAN MICHAEL W
IPC: A61B17/58
Filed: 1993-03-30
Granted: 1994-05-03
Abstract: Abstract A modular femoral internal implant system for use in the treatment of femoral disorders resulting from injury, disease or congenital defect includes at least three interconnectable components: 1) an elongated epiphyseal/metaphyseal implant, 2) an intramedullary rod and 3) an angled side plate having an elongated plate portion adapted to be secured to the outer cortical wall and a hollow sleeve adapted to extend into the femur.  The epiphyseal/metaphyseal implant can be connected to either the angled side plate or the intramedullary rod.  The system may also include an elongated bone plate connectable to the angled side plate, one or more additional epiphyseal/metaphyseal implants of variable length, an additional angled side plate, a distal buttress plate connectable to the elongated bone plate, and a plurality of bone screws of a universal design.  Preferably, many or all of the components of the system are made of an inert, resilient titanium-base alloy.