baber/WOPTO huggingface dataset:
Patent CA-1304879-C (CA)
Inventor: HERWIG JENS
IPC: C08F210/02
Filed: 1986-11-19
Granted: 1992-07-07
Abstract: ABSTRACT OF THE DISCLOSURE      An ionomer-modified polyethylene, that is, an ethylene/carboxylic acid copolymer  in which at least some of the acidic groups are neutralized, is pre-parable by a one-stage procedure by reacting ethylene with unsaturated carboxylic acids and salts of such unsaturated carboxylic acids in the presence of a free radical polymerization initiator, under the conditions employed in the production of high pressure polyethylene (LDPE). The concentration of salt which is incorporated in the polymer is kept at no more than 1 mol %, relative to converted ethylene and other comonomers respectively. Advantageously, the unsaturated carboxylic acids and their salts are added to the copolymerization reaction as a homogeneous solution in a suitable solvent.    The ionomer-modified polyethylenes based on low density polyethylene (LDPE), in which 30 - 95 % of the carboxyl groups are neutralized and the neutralized carboxyl groups represent 0.1 - 0.8 mol %. of the total number of moles of all monomers are suitable as a film material having high strength, good drawabili-ty and high tear propagation resistance.
Patent CA-1310747-C (CA)
Title: Sound field expansion system for a video tape recorder
Inventor: MITSUHASHI TAKAMICHI
IPC: G11B20/00
Filed: 1986-11-27
Granted: 1992-11-24
Abstract: ABSTRACT OF THE DISCLOSURE          A sound field expansion system applicable to a magnetic recording and reproducing apparatus (VTR) which can expand the sound field in a simple construction.  In the sound field expansion system. a circuitry for virtually forming two comb filter characteristics is provided by adding a first audio signal and a second audio signal delayed by a predetermined interval of time with respect to the first audio signal and adding the first audio signal which is passed through a phase shift circuit which shifts the phase of the first audio signal so that the reproduced sound field can remarkably be expanded.  Furthermore. a correction circuit for providing a predetermined frequency characteristic for the first or second audio signal is installed so that an acoustic image having a desired frequency band can be positioned.  The first and second audio signals may be monaural or stereophonic and are derived from demodulations of audio frequency-modulated (AFM) signal recorded on a common track of a magnetic tape together with a one-field video signal in a frequency division multiplex mode and time-axis-compressed pulse-code-modulated audio (PCM) signal recorded on the common track together with the one-field video signal in a time share mode.
Patent CA-1280929-C (CA)
Title: Clean room
Inventor: SUZUKI YOSHINOBU
IPC: F24F7/06
Filed: 1986-12-19
Granted: 1991-03-05
Abstract: A B S T R A C T A clean room suitable for use when ultra high cleanliness of air is to be maintained.  The clean room has a ceiling  , a floor     , an indoor space between the ceiling and the floor, an air supply means for supplying the air of ultra high cleanliness to the indoor space, and an air exhausting means      for exhausting the air supplied to the indoor space.  The indoor space is divided into a first region     requiring high cleanliness and a second region     adjacent to the first region and requiring ultra high cleanliness higher than that of the first region.  The air supply means includes an air outlet port      arranged in a ceiling of the second region     and blowing the air downward, and the air exhausting means includes a first air inlet port arranged in a ceiling of the first region and exhausting the air upward.  Since part of the clean air blown off downward from the air outlet port is exhausted in the first inlet port, an air stream having a large transverse speed component flowing from the second region to the first region is generated, thereby preventing introduction of dust from the first region to the second region.
Patent CA-1322876-C (CA)
Inventor: INABATA TADAO
IPC: C22C32/00
Filed: 1987-01-19
Granted: 1993-10-12
Abstract: ABSTRACT OF THE DISCLOSURE      A light metallic composite material containing therein fine granular additives dispersed in a matrix of a light metallic material, which composite material has a light weight, high mechanical strength, and excellent characteristics such as high damping ability.     The additives each have a density less than that of the matrix and heat resistance enough to withstand a heating temperature at which they are composited with the matrix. Preferably, the additives are each formed with a coating which increases mechanical strength and provides an electromagnetic characteristic different from that of the matrix.     Preferably, the composite material is produced by heating a mixture of matrix powders and additives up to a temperature where only part of the mixture including no microspheres is softened but the mixture is adequately composited, an amount of additives being equal to 10 % to 70 % by volume of the matrix, and by forming the composited mixture into a desired shape and solidifying same.
Patent CA-1292307-C (CA)
Title: Cone loudspeakers
Inventor: WHITE IAN S
IPC: H04R7/12
Filed: 1987-02-13
Granted: 1991-11-19
Abstract: ABSTRACT OF THE DISCLOSURE        In a cone loudspeaker having a central dome, an annular cone around the dome, and a voice coil, the central dome is made mechanically strong and axially stiff and is an acoustic radiator in its own right.  The dome is preferably also radially stiff and its radial stiffness may be enhanced by a circumferential reinforcing ring.  The dome is preferably hemispherical and may be made of aluminium, titanium or fibre-reinforced plastics materials.
Patent CA-1301117-C (CA)
Title: Transportable, articulated-arm crane comprising three hydraulically actuated members
Inventor: TRANCHERO JACQUES
IPC: B66F11/04
Filed: 1987-04-13
Granted: 1992-05-19
Abstract: ABSTRACT OF THE DISCLOSURE:         There is disclosed a transportable, articulated-arm crane comprising three hydraulically actuated members; the third member, considered from bottom to top, is articu-lated with a platform able to support persons and/or other objects  the articulated arms have a lever structure that is rendered lighter and reinforced by struts designed so that  the machine has considerably reduced dimensions when in the completely lowered position against the bed of the vehicle transporting it.
Patent CA-1286857-C (CA)
Inventor: BAIRD JAMES C
IPC: A41F9/02
Filed: 1987-04-14
Granted: 1991-07-30
Abstract: ARTICLE INCLUDING SEGMENT WHICH IS ELASTICALLY SHIRRABLE AFTER MANUFACTURE                           ABSTRACT       An article including at least one segment which is capable of being elastically shirred along at least a portion of its length subsequent to manufacture of the article, preferably by mechanical manipulation of a predetermined portion of the elastically shirrable segment.  The predetermined mechanically manipulatable portion of the elastically shirrable segment preferably comprises an elastomeric member which is maintained in a prestretched and tensioned condition in the desired direction of shirring.  The prestretched and tensioned elastomeric member is also secured in fixed relation to at least one rigidifying member to form a composite structure which is strong enough to resist collapse in a direction parallel to the tensile forces acting upon the prestretched and tensioned elastomeric member prior to mechanical manipulation of the composite structure.  The article is elastically shirred by mechanically manipulating the predetermined portion of the shirrable segment until movement of the prestretched and tensioned elastomeric member relative to the rigidifying member is effected.  Elastically shirrable segments of the present invention are particularly well suited to high speed article manufacturing operations.
Patent CA-1285243-C (CA)
Title: Container and cap assembly
Inventor: KENYON MAYNARD A ND
IPC: B65D43/02
Filed: 1987-05-08
Granted: 1991-06-25
Abstract: ABSTRACT      A reclosable, tamperproof container and cap assembly, wherein the outer leg of the cap is comprised of an upper skirt and a lower skirt, the lower skirt providing the tamperproof means.  When the lower skirt is removed, a section of it remains, and act as a lifting tab, for easy access to the contents of the container.
Patent CA-1284041-C (CA)
Title: Dental articulator and method
Inventor: KNAP FLORIAN J
IPC: A61C19/04
Filed: 1987-07-17
Granted: 1991-05-14
Abstract: ABSTRACT OF THE DISCLOSURE     A method and apparatus for recording condylar motion and utilizing such recording in a dental articulator involves the production of three-dimensional solid recordings formed by the patient executing full mandibular motion, and transferring the recordings under conditions of accurate alignment to a dental articulator where they function as bearing surfaces for the precise reproduction of condylar motion.
Patent CA-1306616-C (CA)
Title: Flangeless transmitter coupling to a flange adapter union
Inventor: PIERCE DEAN S
IPC: G01L/
Filed: 1987-09-11
Granted: 1992-08-25
Abstract: ABSTRACT OF THE DISCLOSURE        A pressure transmitter is coupled directly to an industry standard flange adapter union      having a standard bolt hole spacing. Small diameter isolator diaphragms         are positioned on the transmitter case      at locations so that the industry standard flange adapter union      which couple fluid pressure sources to act on the isolator diaphragms without an intermediate large flange or manifold as is presently required and using the fasteners for the adapter union      to complete the coupling. The smaller isolators         fit within the bolt hole spacing of the industry standard adapter union
Patent CA-1289095-C (CA)
Title: Process for producing starch from cereals
Inventor: LEHMUSSAARI ANNTI
IPC: C08B30/04
Filed: 1987-11-06
Granted: 1991-09-17
Abstract: ABSTRACT OF THE DISCLOSURE:      A process for the production of starch from cereals includes the  steps  a)  subjecting dry-ground dehusked grains to enzyme treatment,  b)  homogenizing  the  treated  product  (optional), c) extracting starch from the homogenized product,  leaving the fibre, d) concentrating the starch to yield a crude starch frac-tion and process water, e)  separating proteins from the crude starch  and  f)  separating  the  crude  starch  into  primary  and secondary starch fractions.   The process assures that solubles will be maximized so that drying can be accomplished primarily by evaporators rather than by other types of dryers.
Patent CA-1299400-C (CA)
Inventor: WINTHROP JOHN T
IPC: G02C7/06
Filed: 1987-12-14
Granted: 1992-04-28
Abstract: ABSTRACT OF THE DISCLOSURE In the embodiments of the bipolar progressive power ophthalmic lens described in the specification, the constant power distance portion and reading portion regions of the progressive power surface are reduced to mathematical points and the surface astigmatism aberration is reduced to a minimum level by spreading it over a maximally large area of the lens.  The points are the poles of a bipolar system of isopower contours and the entire progressive surface is swept out by the curve of intersection formed between a sphere of variable radius and a corresponding circular cylinder of variable diameter with the dimensions of rela-tive positions of intersecting sphere and cylinder chosen so as to produce a gently curving surface to provide a smooth optical effect.
Patent CA-1317980-C (CA)
Inventor: REYNAUD SERGE
IPC: A63C5/16
Filed: 1988-01-08
Granted: 1993-05-18
Abstract: The accessory for skis, intended to link two skis together in order to facilitate their guidance, comprises a connecting leaf or strip (1) mounted on resiliently flexible members (3) rigidly fixed to the tips of the skis and making it possible to vary the relative position of said skis.
Patent CA-1314533-C (CA)
Title: Process for the preparation of modified zeolites
Inventor: KLAZINGA AAN H
IPC: C01B39/22
Filed: 1988-03-28
Granted: 1993-03-16
Abstract: A B S T R A C T       PROCESS FOR THE PREPARATION OF MODIFIED ZEOLITES      Process for the preparation of a modified zeolite by treatment with a solution of one or more metal salts and a calcination which comprises treating a zeolite having an alkali oxide/aluminium oxide molar ratio between 0.13 and I with a solution of a salt of a multi-valent metal-ion having an atomic number of from 12 to 83 and converting the thus treated zeolite by calcination into a product having a unit cell size between 24.21 and 24.60 A.
Patent CA-1310205-C (CA)
Title: Quantitative lense analysis technique
Inventor: BARR ROGER L
IPC: G01M11/02
Filed: 1988-03-31
Granted: 1992-11-17
Abstract: Abstract of the Disclosure A method and apparatus is provided to quantitively characterize a lense or optical system as to best focus position at various locations of the lense as well as to determine the curvature or focal surface, and the relative depth of focus of the various locations.  A test vehicle is provided having an array of object groups, each object group being comprised of a small object having a size about equal to the resolution limit of the lense or optical system and a large object having a size substantially larger than the resolution limit of the lense or optical system, the groups being separated by opaque areas.  The test vehicle is interposed in the lense path and the focal length set at a position which will resolve the large object but not the small object on an image sensor.  The sensor is moved orthogonally with respect to the lense and the focal length changed and the object group projected again on the sensor.  These steps are repeated successively until both large and small object images are resolved, and further continued thereafter until only the large object is resolved.  A series of large and small images are produced for each object group, and the median point of the small image series for each object group represents the best focal distance for the location of the lense corresponding to that object group.
Patent CA-1282775-C (CA)
Title: Mixing apparatus
Inventor: MARKLE STEPHEN L
IPC: B01F15/00
Filed: 1988-05-25
Granted: 1991-04-09
Abstract: MIXING APPARATUS                         Abstract Mixing apparatus having a sealed impeller shaft provided by a seal unit which supports the shaft and to which a motor drive unit may be detachably connected. When the motor drive unit is disconnected, the mixing apparatus may be sterilized, alone or together with the vessel containing the material to be mixed and to which the seal unit is attached.  The seal unit has a seal assembly with a movable part engageable by a drive shaft in the drive unit when the drive unit is mounted on the seal unit.  The movable seal part is biased to move to a position against a mounting plate on which the drive unit is mounted when the drive mounted is removed so as to provide a static seal.  When the drive unit is attached to the seal unit, the driven shaft engages the moveable seal unit part and moves it to another position away from the mounting plate, where the seal assembly may freely rotate with the impeller shaft and maintain a dynamic seal.
Patent CA-1282881-C (CA)
Title: Microwave multiplexer with multimode filter
Inventor: HUDSPETH THOMAS
IPC: H01P5/08
Filed: 1988-06-07
Granted: 1991-04-09
Abstract: ABSTRACT OF THE DISCLOSURE        A microwave multiplexer (20) has a set of independently tunable signal channels coupled to a common waveguide (22).   Each of the channels has input and output 3dB couplers (40,  106) which are joined by cylindrical  radiators  (32,  34)  carrying  circularly polarized waves.  Both TE and TM waves are propagated within a plurality of resonant cavities (36, 38) within each of the filters (32, 34).   Coupling between the cavities (36, 38) is provided by an array of slots (88) and an array of probes (90) wherein the slots (88) couple TE waves and the probes (90) couple TM waves. Adjustment of the slots (88) and the probes (90) provides for independent coupling coefficients for the two propagation modes.  A set of coaxial line probe structures (60, 62, and 120, 122) connect between the input and output couplers to end cavities of a filter for the launching of TM waves, there being discs (140) in the end cavities adjacent the probes for converting energy of a TM wave to a TE wave, thereby providing both the TM and the TE wave propagation.  There results a greater versatility in the coupling allowing for greater compaction of a signal channel with reduced weight and bulk to the multiplexer.
Patent CA-1304630-C (CA)
Title: Planing motor boat hull
Inventor: HAINES JOHN S
IPC: B63B1/18
Filed: 1988-06-16
Granted: 1992-07-07
Abstract: ABSTRACT          A planing boat hull including a bow, a transom, a keel and an underside having: a.        a transverse step adjacent the transom which extends partially the width of the underside; and b.      a recess bounded by the transverse step and a pair of side walls and having an open transom end.          The hull  underside  may  further  include a pair of substantially planar portions wherein each portion is located adjacent to a respective side wall of the recess.  The hull underside may further include a plurality of lift strakes including an outermost lift strake terminating at or adjacent the  transom,  one or more  intermediate lift  strakes terminating short of the transom and said outermost lift strake and an innermost lift strake located adjacent to the keel terminating short of the transom end(s) of said one or more intermediate lift strakes.
Patent CA-1294399-C (CA)
Inventor: FIELDER WILLIAM A
IPC: B44C1/00
Filed: 1988-08-19
Granted: 1992-01-21
Abstract: Abstract of the Disclosure A decorative article is made by a process in which a controlled-flatness substrate having an effective edge in a closed pattern on its surface receives a fluent plastic composition which is cast into an area defined by the edge.  The fluent plastic flows to the effective edge and is then cured to form a clear plastic cap.  During casting and curing the substrate is held flat and horizontal by reason of its being releasably adhered to a flat, smooth-surfaced, stiff release liner.  The resulting decorative article is free of optical distortions and may be used as a covering preferrably for elongated automotive components such as the external vertical pillars between the passenger compartments of automobiles.
Patent CA-1303305-C (CA)
Title: Automatic surface-treating apparatus
Inventor: JACOBS STEPHEN
IPC: A47L11/40
Filed: 1988-11-01
Granted: 1992-06-16
Abstract: Abstract of the Disclosure Improved automatic surface-treating apparatus of the type supported by and traversing a horizontal surface unattended.  The apparatus includes mobility members for movement in a principal direction and side-step members having rotational axes a given distance above the surface.  Each side-step member has a first sector with a far periphery spaced from its axis by more than the given distance, and a second sector with a near periphery spaced from its axis by less than the given distance.  This arrangement allows a single rotation of the side-step members to accurately lift and move the apparatus laterally through a predetermined distance, to a new surface-treatment path.
Patent CA-1316022-C (CA)
Title: Real-time color comparator
Inventor: SULLIVAN CHARLES T
IPC: G01J3/46
Filed: 1988-11-08
Granted: 1993-04-13
Abstract: ABSTRACT        A real-time color comparator which performs color  comparisons  of  sample  objects  to  a  reference color for  the purpose of  identification,  sorting or matching.  Two optical paths are positioned to collect the light from a reference object and a sample object and the light outputs from the two paths are directed onto a spectral dispersive element shown in the form of a concave diffraction grating that decomposes each light signal into its spectral constituents which are imaged  on  a  dual  photodetector  array.    The color signature from the reference and the color signature from the sample are compared.
Patent CA-1308672-C (CA)
Title: Plastics can
Inventor: SCHIEMANN WOLFRAM
IPC: B65D21/02
Filed: 1988-11-14
Granted: 1992-10-13
Abstract: ABSTRACT           A plastics can 15 has a screw closure comprising a screw cap 34.  In the closed position, a flat surface 44 of the screw cap 34 lies in one common horizontal plane with the upper edge of two edge handles 28, 29.  when several such cans are stacked one upon another, as the results of the additional support on the flat surface 44, greater stability is achieved.  Such cans can, therefore, be stacked with less danger.  Of particular importance for cans of more than 10 litre capacity (Figure 1).
Patent CA-1293435-C (CA)
Title: Barrier sealed packages for cigarettes and other smoking articles
Inventor: LANGLEY WILLIAM H
IPC: B32B15/085
Filed: 1988-11-25
Granted: 1991-12-24
Abstract: BARRIER SEALED PACKAGES FOR CIGARETTES               AND OTHER SMOKING ARTICLES                  Abstract of the Disclosure The  invention  is  directed  to  a   packaging composite for barrier sealed cigarette or other smoking article packages.  The composite includes a foil layer, exterior and interior  skin  layers  of  heat-sealable thermoplastic  polymer,  first  and  second   biaxially oriented  polypropylene   homopolymer  layers   located between the exterior skin  layers and the foil  layers, and first  and  second  adhesive  layers  coupling  the polypropylene layers  to the  foil layer  on each  side thereof.   The  package  laminate has  a  thickness  of between 1.5 and 2.5 mils.
Patent CA-1330455-C (CA)
Inventor: ALGER ROBERT M
IPC: G01C9/00
Filed: 1988-12-12
Granted: 1994-06-28
Abstract: ABSTRACT         The invention provides an electronic tilt measuring system for measuring the relative tilts of various platforms such as weapons on a ship.  The basic system comprises an inclinometer (1) at each platform, a central control and display unit (2) and a computer (4).  The output signals from the inclinometers (1) are passed to the central unit (2) and averaged over a synchronised time period to give an average inclination measurement with respect to the gravity vector over the measure-ment period.  The data is then passed to the computer (4) where it is analysed.  The computer (4) is programmed to calculate measured tilts and relative tilts and to produce graphical representations of the data.
Patent CA-1328215-C (CA)
Inventor: LARSEN PREBEN K
IPC: F15B15/14
Filed: 1988-12-23
Granted: 1994-04-05
Abstract: Abstract A servomotor actuated by a pressure medium comprises a piston rod (7) brought out at one side.  The external diameter of the piston (8) is a multiple of the axial length of its circumferential surface (18).   Two annular faces (19, 20) receive between each other an annular plate-like central portion (17) of the piston (8).  They are so closely juxtaposed that they form a radial guide for the piston (8).   Despite the larger piston diameter, this results in guiding that is free from jamming.
Patent CA-1334904-C (CA)
Inventor: BUCKLEY KEITH
IPC: A23L13/50
Filed: 1989-02-09
Granted: 1995-03-28
Abstract: A process for preparing a proteinaceous food product comprises passing a wet dough of a mammalian and/or avian  meat  protein  at  least  part  of  which  is functionally  inert  protein,  between a  pair of oppositely rotating rollers to form a sheet of food product.  The functionally inert protein may have been cooked or otherwise treated to impart to the protein one or more characteristics of cooked protein and/or may comprise inert scleroprotein.        A sheet or portion of a sheet of proteinaceous food product  comprises  roll-refined protein  substantially all of which protein is of mammalian and/or avian meat.