baber/WOPTO huggingface dataset:
Patent CA-1284813-C (CA)
Title: Space block control means for dynamoelectric machine
Inventor: COX FREDERICK E
IPC: H02K1/16
Filed: 1987-11-06
Granted: 1991-06-11
Abstract: SPACE BLOCK CONTROL MEANS FOR DYNAMOELECTRIC MACHINE       Abstract of the Disclosure A control device, such as a U-shaped member including opposingly directed tab projections connected to to upstanding arms of the member may be coupled to a space block of a dynamoelectric machine for limiting motion, especially inward radial motion, of the block.  In one embodiment, the space block has a groove for forming a portion of a keyway between the space block and a flange and the tabs of the member are disposed in the keyway radially outward a key which is dimensionally smaller than the groove, so that the tabs abut a sidewall of the groove, thereby limiting motion of the block when the key contacts the tabs.
Patent CA-1289264-C (CA)
Title: Detector system for optical mouse
Inventor: VICTOR KENNETH E
IPC: G09G3/02
Filed: 1987-12-24
Granted: 1991-09-17
Abstract: Abstract of the Disclosure A cursor position control system in which an optical mouse having a light source and three-by-three detector array moves over a surface having a grid pattern of intersecting orthogonal grid lines of a first color and spaces defined between the grid lines of a second contrasting color.  The grid lines are characterized by a line width.  Detector cells are grouped into pairs of cells for detecting motion in a particular direction. Cells in a pair are separated so as to image areas an odd multiple of line widths apart in a direction orthogonal to that particular direction.  Pairs of cells image areas separated in the particular direction from areas imaged by related pairs of cells by an odd multiple of half line widths.  Pairs of electrical signals from pairs of cells are combined then differentiated with respect to time to produce related quadrature signals indicative of the amount and direction of movement of the mouse relative to the surface.
Patent CA-1296421-C (CA)
Title: Log-periodic slot antenna
Inventor: CHOW YUNG L
IPC: H01Q11/10
Filed: 1988-01-18
Granted: 1992-02-25
Abstract: ABSTRACT OF THE DISCLOSURE   A  log-periodic  slot  antenna has  adjacent  radiating elements connected by off-centre co-planar lines thereby providing the required phase reversal and modifying the element impedance to match that of the co-planar line.  By providing a ground plane restricted in size to that of the element array a difference pattern can be formed by the single antenna  giving  a  sharp  null  in  the  longitudinal  direction  of  the antenna.   A  dual  log-periodic  antenna  formed  from  two  such  single antennas can be fed in-phase and produce two difference patterns one in the co-polar plane and one in the cross-polar plane.
Patent CA-1330164-C (CA)
Inventor: SORG HELMUT
IPC: C03B5/04
Filed: 1988-02-05
Granted: 1994-06-14
Abstract: Abstract Roof of a working tank or of a glass melting furnace having a basin containing molten glass and covered by the radiation roof of highly refractory firebrick material, in which the roof is constructed with horizontal supporting elements in the form of straight arches (3) bearing the load of the roof (1) and spanning the tank at intervals, and with horizontal slabs (4) covering the open intervals between the supporting elements (3) and laid crosswise between the supporting elements(3).
Patent CA-1295403-C (CA)
Title: Semiconductor laser apparatus
Inventor: OKADA TSUNEKAZU
IPC: H01S3/13
Filed: 1988-05-26
Granted: 1992-02-04
Abstract: ABSTRACT OF THE DISCLOSURE         According to this invention, in a semiconductor laser apparatus which detects a laser beam from a semiconductor laser element using a light-receiving element so as to perform automatic light power control, a temperature dependency of a power of a laser beam transmitted through an end face protection film of the semiconductor laser element and that of a detection power of the light-receiving element have inverse characteristics to each other, so that a variation in intensity of output light due to a change in temperature is minimized.
Patent CA-1310857-C (CA)
Title: Thermal transfer printer
Inventor: UNE RYUZO
IPC: B41J2/325
Filed: 1988-06-10
Granted: 1992-12-01
Abstract: ABSTRACT OF THE DISCLOSURE            A thermal transfer printer comprises a thermal printing head for generating heat corresponding to an image signal.  A platen roller opposite the thermal head and co-operates therewith during heat transfer to effect contact between sheet-like material to which ink is to be transferred and transfer material.  The platen roller has a circumference less than the length of the sheet-like material whereby only a portion of said sheet-like material is wrapped around the platen roller at any on time.  Timing belts that travel at a speed substantially equal to the peripheral speed of the platen roller for ensure correct alignment of the sheet-like material with the platen roller during heat transfer.  A clamp clamps the sheet-like material to the timing belts.
Patent CA-1281310-C (CA)
Inventor: DWINNELL WAYNE F
IPC: E06C7/48
Filed: 1988-06-16
Granted: 1991-03-12
Abstract: ATTACHMENTS TO STABILIZE AND EXPAND               THE USE OF HOLLOW RUNG LADDERS     ABSTRACT OF THE DISCLOSURE  A pair of attachments for use with ladders constructed with hollow rungs to stabilize the ladder and to protect the gutter. These attachments when used with ladders also provide for a scaffold plank. The attachments when used with a ladder on a pitched roof allows the ladder to be used to access that roofs peak. Previously the ladder would rest on the rain gutter when the user was to access the roof of a building. Previously a work platform had to be built from wood or metal resulting in time consuming construction. Previously when accessing the roof peak of a building a means of providing a positive foothold had to be constructed from rope and ladder or from wood. The present invention provides steel flat bars bent to fit the rung spacing of the ladder with a steel tube welded at each end sized to fit snuggly into the opening of any two consecutive rungs in that ladder. The ladder can now be used to access the roof of a building without resting on the gutter. The ladder can be used as part of a scaffold and to provide a positive foothold when on a pitched roof.
Patent CA-1315600-C (CA)
Title: Medium consistency pump with self-feeding
Inventor: GULLICHSEN JOHAN
IPC: F04D7/04
Filed: 1988-06-27
Granted: 1993-04-06
Abstract: ABSTRACT      A suspension, such as paper pulp, having a consistency of between about 6-20% (i.e. medium consistency) is pumped without the necessity of using a vacuum system to effect gas removal.  A hollow shaft having elongated slots in it, has impeller blades disposed on its exterior surface.  Connected to the suspension inlet end of the shaft is a hollow boat-type propeller which positively feeds suspension directly to the impeller blades.  The propeller is disposed in a vessel having an enlarged cross section with respect to the pump housing, and anti-rotation bars are placed around the propeller in the vessel to prevent rotation of the suspension, so that it is fed by the propeller.  The propeller pressurizes any gas separated from the suspension so that it can be removed from the suspension by the pump without a vacuum system.
Patent CA-1310127-C (CA)
Title: Potentiometer setting detection by measuring the ratio of rc time constants
Inventor: LEVINE MICHAEL R
IPC: G01R17/20
Filed: 1988-07-06
Granted: 1992-11-10
Abstract: ABSTRACT     The present invention is a technique for forming a signal representing the operator setting of a potentiometer. This technique consists of measuring the variable time constant of the resistance of potentiometer between a fixed terminal and the terminal variable by an operator setting and a capacitor, measuring the reference time constant of the resistance between the fixed terminals of the potentiometer and this same capacitor.          These time constant measurements are made by discharging the capacitor, charging the capacitor through the appropriate terminal of the potentiometer and measuring the time required for the voltage across the capacitor to reach a predetermined threshold level. The digital ratio of these two time constants is then calculated. This digital ratio is the representation of the operator setting of said potentiometer.
Patent CA-1332893-C (CA)
Inventor: BROWN JOSEPHINE S
IPC: C09J7/02
Filed: 1988-07-26
Granted: 1994-11-08
Abstract: Film-backed pressure-sensitive adhesive tape that resembles conventional creped paper-backed masking tape but can be torn cleanly with the fingers, is prepared by extruding an isotactic polypropylene film, passing it through the nip between a rubber roll and a water-cooled embossed steel roll at a temperature and rate such that predominantly crystalline film is obtained.  The embossed roll imparts a ridge-and-valley configuration to one surface of the film, valleys extending crosswise of the tape and having a depth greater than half the total film thickness.  When the smooth face of the film is coated with pressure-sensitive adhesive, the resultant tape can be torn readily, using only the fingers, in a straight line crosswise of the tape.  When subjected to a stretching force in the machine direction (at right angles to the ridges and valleys), the tape elongates uniformly without "necking down."  A specific embodiment of this invention is a sterilization indicator tape made with the above described film.
Patent CA-1314963-C (CA)
Inventor: COMPEAU DAVID E
IPC: E05B15/02
Filed: 1988-09-14
Granted: 1993-03-23
Abstract: G-1508 C-3996 CONTROL APPARATUS FOR A COMPARTMENT PANEL PULL DOWN MECHANISM Abstract of the Disclosure A control for a motorized deck lid pull down mechanism which does not require the use of mechanically activated limit switches for detecting deck lid positions or the presence of closing or sealing obstructions. Detection of specified pull down conditions as well as the presence of deck lid obstructions is achieved by monitoring the magnitude of motor current in relation to various predefined motor current thresholds. Engagement of the deck lid with obstructions during the pull down sequence will cause the motor current to exceed the closing and sealing thresholds, terminating or reversing the respective function.
Patent CA-1295442-C (CA)
Title: Process for modifying the surface of metal or metal alloy substrates and surface modified products produced thereby
Inventor: POND ROBERT B SR
IPC: C23C24/04
Filed: 1988-09-23
Granted: 1992-02-11
Abstract: ABSTRACT OF THE DISCLOSURE A  tightly bonded  abrasion  resistant  surface layer is formed on, or a binding layer is formed therebe-tween, reactive metal or metal alloy substrates.  A pow-dered mixture of  oxides,  at  least  one of  the oxides having a heat of oxidation lower than the heat of oxida-tion of the oxide of the substrate, is disposed on the substrate.  The substrate with the oxide powder disposed thereon is heated to a temperature lower than the melting point or solidus temperature of the substrate.  The pow-dered mixture of oxides preferably comprises fly ash.  An abrasion  resistant  surface  layer may be bonded  to  a structural part by mixing the powdered mixture of oxides with powdered reactive metal or reactive metal alloy, disposing the resultant mixture on the part, and heating.
Patent CA-1328543-C (CA)
Title: Tissue expander and method of making and using
Inventor: GAUGER JOHN R D
IPC: A61B19/00
Filed: 1988-10-25
Granted: 1994-04-19
Abstract: TISSUE EXPANDER AND METHOD OF MAKING AND USING              ABSTRACT OF THE DISCLOSURE        Described herein is a tissue expander which includes a) a fluid-tight envelope which is inflatable by a single means for inflation and which has an expandable upper section formed of i) a first elastic portion and ii) a second elastic portion formed of a material having a lower modulus of elasticity than that of the material forming the first portion, so that during the inflation of said envelope the modulus of elasticity of each portion at least partially controls the amount of expansion of each portion, thereby allowing the envelope to assume a complex shape.  The tissue expander also has a means for the controlled inflation of the envelope with a biocompatible fluid.  Also described is a method of making an envelope for a tiss? expander comprising a)  forming an expandable upper section having a first elastic portion and a second elastic portion formed of a material having a lower modulus of elasticity than that of the material forming said first portion, b)  forming a bottom, and c)  attaching said upper section to the periphery of said bottom to form a fluid-tight envelope which is inflatable by a single means for inflation, said second portion having a lower modulus of elasticity than said first portion so that during the inflation of said envelope the modulus of elasticity of each portion at least partially controls the amount of expansion of each portion and causes the envelope to assume a complex shape.  The tissue expander, in use, is placed beneath a section of tissue to be expanded, and the envelope is inflated gradually over a period of time.
Patent CA-1332447-C (CA)
Inventor: STARAL JOHN S
IPC: H01B3/30
Filed: 1988-11-15
Granted: 1994-10-11
Abstract: Abstract A splice assembly which employs a material that is activated by moisture to form a three-dimensional cross-linked network that blocks the ingress of water to the splice.  The assembly comprises a moisture activatable material (encapsulant), at least two conductors spliced together, and, optionally, a splice closure.  Prior to exposure to moisture, the encapsulant is sufficiently fluid to flow around and into the interstices of the splice assembly and establish intimate contact with the splice.  The encapsulant remains fluid until it is contacted by moisture at which time the encapsulant begins to crosslink.  Useful encapsulants include polymers and prepolymers based on polyurethanes, polysulfides, organopolysiloxanes, and combinations thereof.
Patent CA-1325097-C (CA)
Title: Method of and apparatus for direct casting of metal strip
Inventor: HONEYCUTT LEROY III
IPC: B22D11/06
Filed: 1989-01-31
Granted: 1993-12-14
Abstract: ABSTRACT     A method of direct casting molten metal into strip by providing a melt of the metal to be cast, providing a continuously driven metal chill surface, flowing a layer of the melt onto the moving chill surface and extracting heat from the layer of melt to solidify and temporarily bond the layer of melt to the chill surface and to shrink the solidified layer and cause it to be released from the chill surface, withdrawing the released solidified layer as a continuous metal strip, establishing a natural oxide layer on the chill surface to provide an interface between the layer of melt and such chill surface, and maintaining the natural oxide in a smooth layer of substantially uniform thickness.
Patent CA-1313483-C (CA)
Title: Chopping device for foodstuffs
Inventor: MICHEL WALTER
IPC: B26D3/26
Filed: 1989-05-31
Granted: 1993-02-09
Abstract: Abstract The invention relates to a device for chopping foodstuffs such as onions and the like, having a housing that may be placed over the items to be chopped and, guided in the housing, a knife that may be pressed downwards against the force of a spring by means of a plunger, the knife being rotated about an angle during its upwards movement through the guide in the housing with a coupling composed of two substantially annular elements (15, 16) disposed concentrically to one another, one element (15) of which presents, on the side facing the second element (16), a number of teeth (24) angled in the same direction and spaced around the circumference of said element, the second element (16) presenting, on the side facing the first at least two or more resilient tongues (34) meshing into the vertical flank of the teeth (24), the first coupling element (15) being slidably mounted in spiral grooves (8) formed in the housing whereas the second coupling element (16) is mounted rigidly with the operating mechanism (9).
Patent CA-1281241-C (CA)
Title: Metal packaging can and method of making it
Inventor: JONKER FREDERIK
IPC: B21D51/26
Filed: 1989-06-16
Granted: 1991-03-12
Abstract: Text for filing METAL PACKAGING CAN AND METHOD OF MAKING IT                  ABSTRACT      Metal packaging can body, for use in forming a can by attachment of at least one lid, has a generally cylindrical body portion and a flanging rim which is intended for the subsequent attachment of the body portion to the lid.  The flanging rim is at least partly of wall thickness greater than that of the body portion.  To save material and costs, the flanging rim has at least one portion which decreases in wall thickness in the axial direction away from said body portion   The invention is especially applicable to deep-drawn and ironed products.
Patent CA-1336621-C (CA)
Inventor: AAGARD ROGER L
IPC: G01N25/18
Filed: 1989-06-20
Granted: 1995-08-08
Abstract: A method and apparatus for determining both the thermal conductivity, k, and specific heat, cp, of a fluid of interest are disclosed.  An embodiment uses proximately positioned resistive heater and thermal sensor coupled by the fluid of interest.  A pulse of electrical energy is applied to the heater of a level and duration such that both a transient change and a substantially steady-state temperature occur in the sensor.  The k of the fluid of interest is determined based upon a known relation between the sensor output and k at steady-state sensor temperature; and cp of the fluid of interest is determined based on a known relation among k, the rate of change of the sensor output during a transient temperature change in the sensor and cp.
Patent CA-1334524-C (CA)
Title: Container and method of and apparatus for notching the same
Inventor: TAKATA YUKIO
IPC: B65D77/20
Filed: 1989-06-30
Granted: 1995-02-21
Abstract: A container, a method of and an apparatus for forming cuts in the container are disclosed.  Weakening lines serving as cutting lines are formed on inside of the sealing portion and outside of the flange portion of the container, and a non-sealing region is formed at the position at which a part of the outer weakening line is included.   These weakening lines can be formed by rotating the container and bringing the notching blades into contact with the flange portion.
Patent CA-1327383-C (CA)
Title: Method of reducing average data rate in rotating mirror laser recorder
Inventor: MCQUADE JOHN M
IPC: H04N1/17
Filed: 1989-08-03
Granted: 1994-03-01
Abstract: Abstract of the Disclosure A laser printer records an image on a medium as a function of digital data which is received at an input data rate.  A laser beam is used for recording pixels of the image on the medium while the medium is advanced in a longitudinal direction at a controlled uniform rate.  The pixels are recorded by scanning the beam across the medium in a transverse direction, at a scan velocity, using a multifaceted, rotating mirror which reflects the beam onto the medium.  The scan velocity is proportional to the angular velocity of the rotating mirror.  Beam intensity is modulated as a function of the input digital data  In order for the average data rate of recording to be compatible with the input data rate while maintaining a high instaneous scan velocity, the beam is scanned across the medium by only one of every N-facets of the rotating mirror.
Patent CA-1316345-C (CA)
Title: Vortex inhibitor for molten metal discharge
Inventor: KOFFRON ROBERT J
IPC: B22D43/00
Filed: 1989-08-03
Granted: 1993-04-20
Abstract: VORTEX INHIBITOR FOR MOLTEN METAL DISCHARGE                    ABSTRACT     An  improved vortex inhibitor for separating slag from molten metal during the discharge of molten metal  through  a  nozzle  includes  a  uniform  castable refractory body with a regular pyramidal shape.   The tapered  body  includes  swirl  obstructing  surfaces extending  along  its  length  and  is  geometrically proportioned so that the center of gravity is closer to the  apex  than  the  center  of buoyancy of the body.          Preferably, the outermost parts of the base intersect a circle whose diameter is larger than the diameter of the nozzle opening and defining a base length dimensionally fixed with respect to the base length within a predeter-mined range.  Preferably, the longitudinal height is in the  range  of  0.5  to  1.0 times the diameter of the circumscribed  circle.    A modified,  spherically  con-figured body which can be rolled into position also is geometrically proportioned to keep the center of gravity spaced from the center of buoyancy and closer toward the apex of the modified shape.
Patent CA-1306723-C (CA)
Title: Method and apparatus for the collection and transportation of dual biological evidence
Inventor: JENSEN RICHARD E
IPC: G01N1/00
Filed: 1989-08-14
Granted: 1992-08-25
Abstract: DR. RICHARD JENSEN ET AL            ABSTRACT OF THE DICLOSURE      METHOD AND APPARATUS FOR COLLECTION      OF BIOLOGICAL EVIDENCE     An apparatus for collecting and preserving fluid biological  evidence  comprising a  specimen vial  and lid, the lid having an adhesive coated disk inserted therein with the lid initially being inverted on the rim of the specimen vial  and encased  in a tamper evident plastic wrapper.   The specimen vial and lid, encased  in the  tamper  evident wrapper,  are  sealed along with a pair of adhesive backed sealing tapes, an instruction manual, and a compressible foam cushioning pad, within an outer container with a second tamper evident plastic wrapper.
Patent CA-1332570-C (CA)
Title: Method for reducing skin irritation associated with drug/penetration enhancer compositions
Inventor: PATEL DINESH C
IPC: A61L15/00
Filed: 1989-09-05
Granted: 1994-10-18
Abstract: A B S T R A C T A composition and method for reducing the skin irritation properties of a transdermal drug/enhancer composition which comprises incorporating into said composition, either prior to or at the time of application the skin, an effective amount of glycerin. When incorporated into the drug/enhancer composition prior to application to the skin the glycerin content will be between about 0.1 and 70 wt.%, preferably between about 1.0 and 50 wt.% and most preferably between about 5.0 and 20 wt.% of the composition.
Patent CA-1332446-C (CA)
Inventor: GILLILAND MALCOLM T
IPC: B23K9/10
Filed: 1989-09-18
Granted: 1994-10-11
Abstract: "ELECTRONIC WELDING STATION WITH AC AND REVERSIBLE POLARITY DC OUTPUTS"                  Abstract An electronic welding station suitable for use with a dedicated power supply or for use in a system wherein a plurality of electronic welding stations are powered from a central power supply. The welding station provides for a positive ground mode, a negative ground mode, and two AC output modes of operation. Most components are used for all modes of operation. The main transistor bank (57) and an auxiliary transistor bank (64) are used in an emitter follower configuration for negative ground mode, a common emitter configuration for positive ground mode, and, in conjunction with an inductor/transformer (67), in a push-pull configuration for both AC output modes of operation. The inductor/transformer (67) is configured as an inductor for DC output operation and, by the insertion of a plug (67E), as a transformer for AC output operation. Selection of the positive ground mode, the negative ground mode, or an AC output mode is achieved by the use of a multi-pole switch (25) and a jumper (90). The result is an extremely versatile electronic welding station.