baber/WOPTO huggingface dataset:
Patent CA-1079199-A (CA)
Inventor: VERANTH JOSEPH L
IPC: H04R1/28
Filed: 1977-06-28
Granted: 1980-06-10
Abstract: ELECTROACOUSTICAL TRANSDUCER ABSTRACT OF THE DISCLOSURE A loudspeaker driver has a molded plastic basket made of thermoplastic PVE polyester with 20-30% glass fill and a stamped octagonal front pole plate of low reluctance magnetic material molded into the base of the basket with a keyed central bore.  The break edge of the stamped pole plate is used as an undercut for encapsulation.  The basket is formed with three tabs spaced equiangularly about the periphery for attachment to the baffle.  Accurate upstanding rims extend between the tabs for making engagement with rim segments in a baffle to effect an essentially fluid-tight attachment of the driver to the baffle using snap-in techniques.  The tabs are also formed with openings for accommodating screws or other fastening elements to fasten the driver in place with more conventional techniques.  Radial ribs extend downward then radially inward from each tab.  An exceptionally flat annular surface is just inside the tabs for accommodating the edge of the diaphragm or cone, the roll of which may be either concave or convex.  An intermediate portion of the basket extends downward and inward toward the axis of the basket to a second exceptionally flat annular surface for accommodating the voice coil spider which may be fastened there-to by applying heat through the peripheral edge of the spider to the flat surface, causing the plastic material to liquify, flow through the porous material of the spider and solidify when the heat is removed to securely attach the spider to the flat sur-face.  This intermediate portion is formed with a contiguous array of elliptical openings separated from each other by a distance that is less than the minor diameter of an adjacent opening and are formed by a corresponding number of circular pins when the basket is molded.  A pair of tabs extend radially outward from this inner flat surface for accommodating terminals and are below larger generally elliptical openings.          The front pole plate is formed with a central opening for accommodating the circular inside pole piece and the voice coil in the air gap between.  The inside circular pole piece is force fit inside a central opening of a rear octagonal pole plate of low reluctance magnetic material, and an annular ferrite magnet snugly engages the inside circular pole piece and resides between the inside and outside octagonal pole plates in intimate contact therewith.
Patent CA-1090770-A (CA)
Inventor: WHITE JAMES F
IPC: C07C51/25
Filed: 1977-06-29
Granted: 1980-12-02
Abstract: PREPARATION OF METHACRYLIC ACID        FROM METHACROLEIN          ABSTRACT OF THE DISCLOSURE Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, bismuth, cop-per, oxygen, a halogen selected from the group consisting of chlorine, bromine or iodine, and optionally, at least one element selected from the group consisting of Fe, Cr, Ni, Mn, Sb, Te, Rh, and Pd.
Patent CA-1063987-A (CA)
Title: Compressor startup control
Inventor: FINE GARY J
IPC: F04B35/00
Filed: 1977-08-11
Granted: 1979-10-09
Abstract: COMPRESSOR STARTUP CONTROL                ABSTRACT OF THE DISCLOSURE      A positive displacement gas compressor includes an inlet throttling valve which has an actuator responsive to a pressure fluid signal for closing the throttling valve.  A control circuit for supplying pressure fluid to close the throttling valve in-cludes a time delay device and a pilot operated valve which vents the pressure fluid signal holding the throttling valve closed after a predetermined time period commencing with startup of the compressor.
Patent CA-1074365-A (CA)
Inventor: WESNER WALTER H
IPC: A62C5/02
Filed: 1977-08-19
Granted: 1980-03-25
Abstract: TITLE:  FOAM DEVICE          ABSTRACT OF THE DISCLOSURE:  Liquid dispensed from a trigger-type dispenser can be foamed by a foam generating element that contains a plurality of chambers and one or more screens; liquid is aerated and the foam is formed within the element.  In one embodiment the element is adapted to fit over the nozzle of a trigger-type dispenser; in another embodiment the element re-places the nozzle altogether.
Patent CA-1063371-A (CA)
Inventor: NIVEN RALPH E
IPC: F04B39/00
Filed: 1977-09-02
Granted: 1979-10-02
Abstract: ABSTRACT OF THE DISCLOSURE           A refrigeration motor-compressor assembly resiliently mounted within a hermetically sealed shell having a sump area containing lubricating oil continuously aerated by a stirrer fixed to a rotating shaft of the motor-compressor assembly is disclosed.  The stirrer is formed of thin perforated sheet metal or screen mesh shaped into an open-ended truncated cone, the apex portion of which is fixed to the rotating shaft of the motor-compressor assembly while the base portion of the cone is submersed in the lubricating oil contained in the sump area.          Aeration of the lubricating oil by the rotating stirrer attenuates the transmission of mechanical noise generated within the her-metically sealed shell.
Patent CA-1115037-A (CA)
Inventor: BARCH HERBERT W
IPC: D02G3/34
Filed: 1977-09-09
Granted: 1981-12-29
Abstract: Abstract of the Disclosure A process is disclosed for preparing slubby strands in which a textile strand is passed either over a surface or through a slubbing tool.  The surface, if employed, may include a plurality of fluid passages positioned therein.  As the strand passes over the surface or through the slubbing tool, high pressure fluid is introduced onto the surface of and through the strand.  The high pressure fluid passes through the strand.  This passage of fluid through the strand causes the strand to twist and bulk along its length to form a slub which is rapidly removed from the working surface of the slubbing surface or tool as a consolidated slub positioned on the strand.  Optionally, varying-fluid pressures may be employed from opposing sides of a single tool to give a more random slubbing effect.  Then a surface is employed, the surface may be a moving surface and when the surface includes a plurality of fluid passages, the passages may be vented at a point below the surface.  Various apparatus for carrying out the novel method are disclosed as is the novel strand produced thereby.  The process is described with particular reference to producing strands of glass fibers.
Patent CA-1087692-A (CA)
Inventor: PERRY JOHN H
IPC: A61B5/00
Filed: 1977-10-06
Granted: 1980-10-14
Abstract: ABSTRACT OF THE DISCLOSURE      An ambulatory electrocardiographic tape recording (DCG) taken over an extended period of time, such as twenty-four hours, is analyzed with substantial accuracy by randomly select-ing a sample of time periods of a specific duration (such as a 2% sample) and printing out a hard copy record of the electro-cardiogram at these times for visual analysis.  The simplicity of this method combined with high accuracy in quantifying cardiac arrhythmias makes it preferable for most clinical purposes to conventional methods of analyzing DCG's.
Patent CA-1073865-A (CA)
Inventor: BENOIT HORST A
IPC: B65C9/06
Filed: 1977-10-18
Granted: 1980-03-18
Abstract: A B S T R A C T         Container conveying apparatus comprises means for individually engaging conveyed, evenly spaced-apart containers to maintain such even spacing and to shift such conveyed engaged containers laterally a predetermined extent on the conveyor. Such container shift is useful in dividing a single row of conveyed containers into two rows for subsequent processing of containers, such as in labelling of containers.
Patent CA-1103735-A (CA)
Inventor: HASEBE MITSUO
IPC: G03G15/043
Filed: 1977-10-17
Granted: 1981-06-23
Abstract: Abstract of the Disclosure An electrostatic potential is induced onto an electrode from a photoconductive member such as a drum in accordance with the electrostatic potential of a background area of an electrostatic image on the drum.  An intensity of light radiation of the drum is controlled in accordance with the induced potential.  The light radiation may be radiation of a light image to form the electrostatic image or subsequent uniform radiation.  The induced electrostatic potential may be used to control an exposure aperture means such as means defining a variable width slit.  In another embodiment of the invention the electrode is in the form of an occluder plate and is positioned by electrostatic force to block the light radiation to a variable degree in accordance with the induced electrostatic potential.
Patent CA-1098097-A (CA)
Inventor: HAMACHER MARTIN
IPC: F21Y101/00
Filed: 1977-11-18
Granted: 1981-03-24
Abstract: ABSTRACT OF THE DISCLOSURE   A lamp for use in subterranean galleries such as mines in which a cold cathode glow tube is received in a housing which, in turn, is removably mounted in a receptacle and is held in place by a ring clamping a flange of the housing against a flange of the receptacle.  The housing may be provided with a translucent cover so that the housing can be removed and replaced as a unit.  The terminals of the glow tube are embedded in an insulating potting mass within the housing.  A reed switch on the receptacle cooperates with a magnet on the housing to de-energize the terminals of the housing upon its removal.
Patent CA-1098233-A (CA)
Inventor: BERG GERHARD
IPC: C08C1/14
Filed: 1977-11-30
Granted: 1981-03-24
Abstract: ABSTRACT          An improved process for manufacturing a pulverulent, free-flowing rubber mixture comprises mixing an aqueous emulsion of a rubber solution with an aqueous dispersion of a filler, and introducing this mixture into water containing a precipitant to precipitate the rubber-filler mixture while simultaneously distilling off the rubber solvent.  The precipitated rubber-filler mixture is separated from the water and dried with constant agitation. The aqueous emulsion of the rubber solution is stabilized by a special combination of ingredients and the precipitation bath is adjusted to a pH of from 1 to 5 and maintained at a temperature above the azeotropic boiling point of the solvent and water.  In addition, the precipitation bath contains sufficient sodium water glass that from 0.001 to 20% by weight, based on the total rubber content, of colloidally dissolved silica is produced therefrom at the pH value of the precipitation bath.
Patent CA-1073232-A (CA)
Inventor: SMITH DEREK R
IPC: F16C7/00
Filed: 1977-12-01
Granted: 1980-03-11
Abstract: ABSTRACT OF THE DISCLOSURE         A method for bonding a tubular shaft to an end fitting to produce an assembly wherein the shaft and the end fitting are in axial alignment and which is capable of transmitting high torque, said method employing an end fitting provided with a mating section having two concentric cylindrical walls which describe an annular cavity or socket adapted to receive the tubular shaft therein.  The high torque carrying capacity of the joint produced in accordance with the invention results from the fact that the shaft is bonded to the mating section of the end fitting on both its interior and exterior surfaces and is in axial alignment with the end fitting. Such axial alignment results from the presence of a resilient sealing ring and an annular shoulder, positioned near the top and base of the inner cylindrical wall of the mating section, which contact the inner surface of the tubular shaft and center the shaft around said wall when the shaft is inserted into the bonding socket of the end fitting.
Patent CA-1115472-A (CA)
Title: Procede d'extrusion pour la fabrication de corps creux
Inventor: BONNEBAT CLAUDE
IPC: B29C48/09
Filed: 1977-12-08
Granted: 1982-01-05
Abstract: PRECIS DE LA DIVULGATION: Procédé de fabrication de corps creux en matière thermoplastique comprenant la formation d'un extrudat fondu, le passage de la matière fondue au travers d'une filière de calibrage de forme appropriée suivie de la mise en forme conventionnelle à l'aide d'un dispositif de conformation et/ou de soufflage. Ce procédé est caractérisé en ce que la matière thermoplastique fondue à une température To supérieure à sa température de fusion TFF est refroidie avant son entrée dans la filière de calibrage à une température T1 comprise entre TFF et la température de début de cristallisation TDC, le refroidissement étant effectué de façon homogène et dans des conditions contrôlées de manière à ce que la matière reste totalement exempte de germes cristallins jusqu'au dispositif de conformation ou de soufflage. Le procédé selon l'invention permet d'extruder des polymères de faibles viscosités dans des conditions de stabilité améliorées.
Patent CA-1102209-A (CA)
Inventor: BERKHOF HENDRIKUS
IPC: G05D27/00
Filed: 1978-01-06
Granted: 1981-06-02
Abstract: ABSTRACT OF THE DISCLOSURE           A pressure regulator has a diaphragm controlled valve and a temperature responsive means for adjusting the loading on the diaphragm to provide a pressure control from a maximum pressure to a minimum pressure in a modulating manner as the temperature changes. The temperature respon-sive means operates a lever for varying the spring loading on the diaphragm which is accomplished by a resilient biased . pin-and a C-shaped spring so that when the pin is lifted by the lever to reduce the force on the C spring, the C spring provides for a broadening of the force on the diaphragm and thus widening the modulation range of pressure for a given range in temperature.
Patent CA-1109626-A (CA)
Inventor: JENKS RICHARD H
Filed: 1978-01-13
Granted: 1981-09-29
Abstract: ABSTRACT OF THE DISCLOSURE A process for compression rolling of thermoplastic sheet material such as polyethylene or polypropylene which involves passing the material between cylindrical rollers under semi-boundary or boundary lubrication conditions to effect a reduction in the original thickness of the material of between about 5 and 95 percent in a single pass while maintaining the circumferential speed of the rollers essent-ially equal to the linear speed of the thermoplastic sheet material passing therebetween and maintaining the film rewind tension in the vicinity of the elastic limit of the material exiting from the rollers. The process is useful in that it can be carried out by continuous cold rolling, i.e. at ambient temperature.
Patent CA-1106066-A (CA)
Inventor: CHELBERG LAWRENCE W
IPC: G06F12/12
Filed: 1978-01-23
Granted: 1981-07-28
Abstract: ABSTRACT OF THE DISCLOSURE     A memory system includes a cache store and a backing store.  The cache store provides fast access to blocks of information previously fetched from the backing store in response to commands.  The backing store includes error detection and correction apparatus for detecting and correct-ing errors in the information read from backing store dur-ing a backing store cycle of operation.  The cache store in-cludes parity generation circuits which generate check bits for the addresses to be written into a director associated therewith.  Additionally, the cache store includes parity check circuits for detecting errors in the addresses and in-formation read from the cache store during a read cycle of operation.  The memory system further includes control apparatus for enabling for operation, the backing store and cache store in response to the commands.  The control appara-tus includes circuits which couples to the parity check cir-cuits.  Such circuits are operative upon detecting an error in either an address or information read from the cache store to simulate a condition that the information requested was not stored in cache store.  This causes the control apparatus to initiate a backing store cycle of operation for read out of a correct version of the requested information thereby eliminating the necessity of including in cache store more complex detection and correction circuits.
Patent CA-1052465-A (CA)
Inventor: INGRAM JOHN D
IPC: G01V1/22
Filed: 1978-01-27
Granted: 1979-04-10
Abstract: METHOD AND APPARATUS FOR ACOUSTIC LOGGING             OF A BOREHOLE                            Abstract A method and apparatus are described for preferentially exciting for extracting late arrivals at low frequencies in an acoustic investigation of a borehole.  The late arrival may be the Stoneley wave whose amplitude is derived by measuring the energy in a predetermined frequency band of a waveform produced with a low frequency transmitter-receiver system.  The transmitter produces a highly damped acoustic pulse whose frequency spectrum 'is selected to preferentially excite a late arrival such as the Stoneley wave and/or tube wave with wavelengths which are significantly greater than the diameter of the borehole while preserving measurable earlier arrivals at higher frequencies.  A receiver system is used which provides a generally flat frequency response including low frequencies to produce waveforms of both the earlier arrivals at high frequencies and late arrivals at low frequencies with sufficient extractable amplitudes throughout a wide range of borehole and formation conditions.  A method and apparatus are described for measuring inelastic behavior of the formation as well as elastic parameters such as the shear modulus of the material comprising the circumference of the borehole wall by investigating frequency bands in the spectrum of a late arrival such as the Stoneley wave.  A display and method for generating the display are described for the investigations of the late arrival.
Patent CA-1086138-A (CA)
Title: Vehicle conveyor system having double chain drive and  selectable dolly
Inventor: BARBER IVAN J
IPC: B61B10/04
Filed: 1978-02-09
Granted: 1980-09-23
Abstract: ABSTRACT OF THE DISCLOSURE     A selectable dolly vehicle conveyor system having spaced dollies mounted between two drive chains and normally moving on a lower track concealed beneath an upper track.  A ramp for shunting the rear part of a dolly to the upper track to push a vehicle, operates only when both the front wheel of such vehicle holds depressed a treadle switch located beyond the ramp and at the same time the front roller of such dolly has passed the ramp and depresses a dolly treadle plate on the lower track.  This permits the front part of the dolly to pass the ramp unobstructed and ensures that only the rear part of the dolly will be shunted to the upper track, even though the front and rear parts of the dolly are longitudinally aligned.
Patent CA-1104347-A (CA)
Inventor: TREHU YVES M
IPC: C03C25/10
Filed: 1978-02-20
Granted: 1981-07-07
Abstract: ABSTRACT OF THE DISCLOSURE       Low attenuation, high strength optical fiber is made by drawing a silica filament core at a temperature from 2040°C. to 2140°C. and melt coating onto it cladding polymer having an index of refraction lower than that of the silica core by extrusion at a draw-down ration from 1.2 to 2Ø
Patent CA-1100422-A (CA)
Inventor: IRVING LESLIE F
IPC: F24S10/50
Filed: 1978-02-20
Granted: 1981-05-05
Abstract: A B S T R A C T           A portable water container which incorporates a solar heating panel. One wall of the portable container consists of an outer transparent/translucent panel and an inner heat-absorbing panel which is spaced from the outer panel. The inner panel may be ribbed or otherwise formed to improve heat-exchanger.
Patent CA-1089903-A (CA)
Inventor: TAYLOR GORDON J
IPC: F16C27/06
Filed: 1978-04-05
Granted: 1980-11-18
Abstract: ABSTRACT OF THE  DISCLOSURE:                   The invention is concerned with a bearing for oscillatory motion, which comprises a pair of fixed side members; coaxial coned apertures in the side members, tapering towards each other; a pin passing through and spaced from the coned apertures in the side members; an oscillatable member; an eye on the oscillatable member, a passage through the eye being tapered from both ends and being about and spaced from the pin; a pair of outer spacers on the pin; a pair of resilient outer bushes engaged on the outer spacers and compressed between the outer spacers and the coned apertures of the fixed side members; a pair of tubular inner spacers freely rotatable on the pin, inwardly of the outer spacers; and a pair of resilient inner bushes engaged on the inner spacers, each inner bush being compressed between the adjacent inner spacer and tapered part of the passage through the eye of the oscillatable member.          Each inner spacer may be releasably engaged coaxially with an adjacent outer spacer by a spigot and socket connection permitting relative rotational movement between the inner and outer spacers.          The bearing of the invention is particularly useful in vehicle suspensions and is durable and trouble-free for long periods of use.
Patent CA-1045837-A (CA)
Inventor: LONG ERWIN L
IPC: E02D5/54
Filed: 1978-04-06
Granted: 1979-01-09
Abstract: ABSTRACT OF THE DISCLOSURE A stepped pile unit for use in soil having a seasonally frozen region and a permanently frozen region, comprising at least one pile body having an upper end located in said seasonally frozen region and extending above the ground and a lower end extending into said permanently frozen region, elongated sleeve means encircling at least part of said upper end and extending downwardly along said lower end into said permanently frozen region, and means for struc-turally interconnecting the sleeve means and pile body and spacing said sleeve means radially outwardly of said pile body to increase the effective diameter of the pile body down into the permanently frozen region.
Patent CA-1056933-A (CA)
Inventor: PATTERSON JOHN L
IPC: G05D3/00
Filed: 1978-04-10
Granted: 1979-06-19
Abstract: ABSTRACT OF THE DISCLOSURE           In a method and apparatus for producing roving with a controlled number of strands, each strand, withdrawn from the inside of a respective hollow strand serving package, is ad-vanced along a given path so that light directed to the element is reflected therefrom within the package.  Changes in the reflected light are sensed to provide an indication of changes in the speed of the strand.  Signals are produced in response to the changing reflected light and the advancement of the strands is controlled in response to the signals.
Patent CA-1082649-A (CA)
Inventor: SCHMITT MARVIN G
IPC: B66C23/26
Filed: 1978-05-09
Granted: 1980-07-29
Abstract: UTILITY CRANE                    ABSTRACT OF THE DISCLOSURE     A trailer able utility crane having a compound articu-lated mast to provide variable working configurations and fold-able on itself to provide a relatively compact storage configura-tion as well as an extended length sufficient to load and unload a tow vehicle.  Transport wheels for road travel are carried by the mast in a manner that allows the base of the crane to be lowered to the ground automatically with extension of the mast.          The mast is supported for azimuthal movement on the base and outriggers for stabilizing the base are safety-interlocked with the azimuthal support.