baber/WOPTO huggingface dataset:
Patent CA-1276275-C (CA)
Title: Resonant tunneling transistor
Inventor: CAPASSO FEDERICO
IPC: H01L29/737
Filed: 1987-07-30
Granted: 1990-11-13
Abstract: RESONANT TUNNELING, TRANSISTOR            Abstract This invention embodies a heterostructure bipolar device comprising: an emitter region 1 having a first conductivity type and a first composition and bandgap profile, a base region 3 having a second conductivity type and a second composition and bandgap profile, a collector region 5 having said first conductivity type and having a third composition and bandgap profile, electricalcontacts, e.g. 7 and 11, at least to said emitter and collector regions, respectively, and a quantum well between said collector region and said electrical contact to said emitter region, said device being capable of operating such that there are first and third base-emitter voltages and a second base-emitter voltage intermediary to said first and third base emitter voltages such that, at said first, second, and third base-emitter voltages, the bottom of the conduction band in at least a portion of said emitter region is below, at, and above, respectively, a quantum resonance of said quantum well, said portion being between said first electrical contact and said quantum well. In one embodiment, a compositionally graded portion of the emitter region is adjacent to the base region, and there is a double barrier in the base region. In anotherembodiment the quantum well is defined by the emitter and a potential barrier in the base region. Further embodiments have a quantum well between emitter and collector regions or else within the emitter region. (FIG. 1)
Patent CA-1311393-C (CA)
Title: Icebreaker
Inventor: HERKENS HERMANN
IPC: B63B35/08
Filed: 1987-08-11
Granted: 1992-12-15
Abstract: ABSTRACT OF THE DISCLOSURE          Icebreaker For reducing the adhesive and frictional forces of snow and ice acting on the outer hull plating of an icebreaker and in particular static frictional forces when the ship becomes stuck in the ice, use is made of heating sources present and available in the hull, in order to keep warm the critical outer hull plating zones, a mixture of outside water and hot exhaust gases from the engines being ejected in the critical outer plating zone.   (Fig. 1)
Patent CA-1286449-C (CA)
Title: Fastening system for a disposable absorbent garment
Inventor: WILSON JOHN C
IPC: A61F13/15
Filed: 1987-09-01
Granted: 1991-07-23
Abstract: ABSTRACT     An anatomically form-fitting, generally self-adjusting disposable absorbent garment (10) comprises a breathable elastomeric outer cover (12) and an absorbent insert (32) substantially superposable on the outer cover (12) and including a liquid-permeable bodyside liner (34) and a liquid-impermeable baffle (36) with an absorbent core (38) disposed therebetween, the insert (32) being attached and integrated into the outer cover by bonds (40) while allowing substantially unrestricted functional resilient stretchability thereof.  A full-length fastening system includes cooperating fasteners (42, 46; 44, 48) each having spaced primary closures (50) near the waist (14) and leg openings (18), respectively, of the outer cover (12) and secondary closures (60) extending substantially between the spaced primary closures (50) whereby the fasteners (42, 46; 44, 48) cooperate with the elastomeric outer cover (12) to maintain the dimensional integrity of the garment (10) and position the insert (32) in bodily registration when the garment is secured about a wearer.  A front (42, 44) or rear (46, 48) pair of the fasteners may alternatively be provided with hinged attachments (51) to an associated pair of front (24, 26) or rear (20, 22) ear portions to form a spliced or tailored seam (49-51) when the fasteners (42, 46; 44, 48) are releasably secured together about a wearer.
Patent CA-1281134-C (CA)
Title: Coin acceptance means and method
Inventor: LEVASSEUR JOSEPH L
IPC: G07F5/22
Filed: 1987-09-28
Granted: 1991-03-05
Abstract: Abstract of the Invention A coin acceptance construction and method for use with a predefined price vending system which includes coin analysis apparatus capable of producing coin analysis data for determining coin validity, a controllable mechanism operable to effect the acceptance or return of deposited coins, coin availability status monitors for determining coins available for payback, such monitors producing coin availability status data indicative of the status of coins available for payback, and vend control circuitry for controlling a vend operation, which vend control circuitry is operable to accumulate credit and to effect a vend when the amount of accumulated credit at least equals the vend price.  The coin acceptance construction, which may be either separate from the vend control circuitry, e.g., separate decoding circuitry, or form a part of the vend control circuitry, e.g., a programmed microprocessor, is responsive to the production by the coin analysis apparatus, upon detection thereby of a deposited coin, of coin analysis data representative of a valid coin to determine the acceptability of such validated deposited coin for the particular vend operation in progress, which determination is dependent upon the vend price, the accumulated credit, the coin analysis data representative of the validated deposited coin, and the coin availability status data.  The coin acceptance construction operates to effect acceptance of such validated deposited coin by the controllable mechanism and the accumulation by the vend control circuitry of additional credit corresponding to the value of such validated deposited coin unless such additional credit accumulation would result in an overdeposit the correct amount of which is unavailable in coins available for payback.
Patent CA-1292153-C (CA)
Title: Apparatus and method for dispensing fluid materials using position dependent velocity feedback
Inventor: MERKEL STEPHEN L
IPC: G05D7/06
Filed: 1988-02-03
Granted: 1991-11-19
Abstract: APPARATUS AND METHOD FOR DISPENSING FLUID MATERIALS USING POSITION-DEPENDENT VELOCITY FEEDBACK          Abstract of the Disclosure Apparatus and method for dispensing fluid materials wherein the fluid is discharged from a nozzle at a rate controlled by a metering valve having a seat and a stem moveable with respect to the seat to modulate the flow.  A servo-actuator connected in a feedback control loop is used to position the valve stem with respect to its seat in accordance with a control signal.  The control signal is derived in accordance with the difference between a driving signal representing a desired flow rate and the sum of a pair of feedback signals.  One feedback signal represents the actual flow rate while the other is correlated to both the relative velocity and position of the stem with respect to the seat.  The position-dependent velocity signal is generated by a transducer comprising a magnet and a coil influencable by the field of the magnet as the magnet and coil move relative one another.  The magnet moves with the valve stem while the coil is fixed with respect to the valve seat.  The magnitude of the position-dependent velocity signal is zero when there is no relative movement between the stem and seat and increases with increasing velocity and its polarity is such as to always oppose such relative movement.  For any given velocity, the magnitude of the position-dependent velocity signal is greater when the stem and seat are close together than when they are further apart so that as the valve closes, the amount of feedback increases.  This permits operation at significantly higher loop gain without risk of instability over the full range of the valve.  The valve is more sensitive and the system is less stable when nearly closed than when more fully open. By relating the amount of feedback to the position of the valve, stability is insured when the valve is more closed without unduly limiting response time when the valve operates more slowly and/or at more fully open positions.
Patent CA-1279911-C (CA)
Title: Miniature connector and method for the manufacture thereof
Inventor: MEYRAT PIERRE-ANDRE
IPC: H01R12/50
Filed: 1988-02-08
Granted: 1991-02-05
Abstract: ABSTRACT     A connector has a plug (1) and a socket (2). The plug (1) is provided with at least one male contact member (4) composed of two resilient foils (19a and 19b) in the shape of a spoon. Each of these foils is mounted in a floating manner in the insulating block (1a, 1b) of the plug (1).          The socket has a female contact member (5) which is rigidly mounted in the insulating block (2a, 2b).  Thus, when the connector is plugged in, the contact element of the plug (1) can align with the contact element of the socket (2) by which it is then positioned. The connector can be executed with a distance between the contact set of only 1.27 mm (0.05 inches).   The connector is useful with surface mounting technology.     Figure 1
Patent CA-1288939-C (CA)
Title: Breast cancer detection training device
Inventor: ABRAMSON DANIEL J
IPC: G09B23/28
Filed: 1988-03-02
Granted: 1991-09-17
Abstract: BREAST CANCER DETECTION TRAINING DEVICE            Abstract of the Disclosure A method and apparatus for use in training persons in breast cancer detection by manual examination is disclosed.  The apparatus includes a device which simulates human breast tissue and a plurality of simulated lesions which are designed to represent specific lesions found in human breast tissue.  The apparatus is employed to train a person in manual breast examination and also serves to train a person to recognize many different types of lesions found in human breast tissue.
Patent CA-1281073-C (CA)
Title: Multi-frequency capacitance sensor
Inventor: CHANG CHIH C
IPC: G01R27/26
Filed: 1988-03-09
Granted: 1991-03-05
Abstract: Abstract of the Disclosure The ratio C1/C2 between the capacitances of two capacitors is obtained by connecting them into the frequency-determining circuit of an oscillator in at least three different combinations, namely C1 alone, C2 alone and both or neither of C1 and C2; the resultant oscillation frequencies are measured, and a signal representative of changes in C1/C2 derived from the oscillator frequencies, preferably by means of digital circuitry.  In one preferred mode C1/C2 is obtained by forming signals proportional to   and in another preferred mode proportional to   In still another preferred mode C1/C2 -1 is obtained from the expression T1-T3/T2-T3 and used as the indication of changes in C1/C2.  In the foregoing, f1, f2, f3 and f4 are the oscillator frequencies produced respectively by connecting C1 alone, C2 alone, neither C1 nor C2, and both C1 and C2 into the frequency-determining circuit, and T1, T2, T3 and T4 are the periods of oscillations at f1, f2, f3 and f4 respectively.
Patent CA-1296393-C (CA)
Title: Method for treating a material using radiofrequency waves
Inventor: ASMUSSEN JES
IPC: H05B6/80
Filed: 1988-03-23
Granted: 1992-02-25
Abstract: ABSTRACT OF THE DISCLOSURE          A method (1) for determining and controlling patterns of change of heating as a function of time for controlled heating of similar materials B, Ba or Bb or (2) for determining changing dielectric constants of a material B, Ba or Bb during heating is described.  The materials are heated in cavity (10 or 10a) using radiofrequency waves with internal tuning using a probe (19 or 19a) and sliding shorting plates (12 or 12a).  In particular single mode or controlled multimode heating of the materials to allow programmed processing is described.
Patent CA-1298681-C (CA)
Inventor: WARREN THOMAS C
IPC: B32B27/32
Filed: 1988-04-15
Granted: 1992-04-07
Abstract: ABSTRACT      Disclosed is a high abuse-resistance film suitable for making bags and pouches.  The film has at least one layer comprising a linear copolymer of ethylene and an alpha-olefin with a density of about 0.935 g/cc or less. The copolymer has a comparatively lower I10/I2 ratio than the corresponding ethylene/alpha-olefin with the same  comonomer and essentially the same density and essentially the same melt index at condition 190/2.16.
Patent CA-1322401-C (CA)
Inventor: CHATO JOHN D
IPC: G01P13/02
Filed: 1988-04-19
Granted: 1993-09-21
Abstract: ABSTRACT OF THE DISCLOSURE An apparatus for determining wind shear, including compass direction and inclination to the horizontal, includes a hemispherical frame on which a plurality of resonant chambers are mounted, defined by tubes with axes passing through the center of curvature of the hemisphere.  One end of each tube is closed, and the end toward the center of curvature is open.  Wind blowing across openings appropriately orientated will cause air within the chamber to resonate and create a sound.  Each tube has a sound detecting unit for producing a signal when the chamber is resonating, and a computer receives the signals and determines from them the direction of the wind.
Patent CA-1287717-C (CA)
Title: Resin molding die
Inventor: TAKEUCHI HIROSHI
IPC: B29C45/26
Filed: 1988-06-09
Granted: 1991-08-20
Abstract: RESIN MOLDING DIE               ABSTRACT OF THE DISCLOSURE:     A rotary block having a gate is rotatably mounted within either one of stationary or movable die plates so that the gate forms a resin passage interconnected to a molding cavity in the stationary die plate in the mold closing state.  A gate slug which is inevitably formed on a molded article in injection molding can effectively be cut off by rotating the rotary block so as to intercept the resin passage before a mold opening process.
Patent CA-1325299-C (CA)
Inventor: FUJIMOTO YOSHIHISA
IPC: C09D163/00
Filed: 1988-06-24
Granted: 1993-12-14
Abstract: ABSTRACT OF THE DISCLOSURE          An epoxy resin based powder coating composition which comprises:  (A) 100 parts by weight of a mixed epoxy resin having a softening point of 60°-75°C which consists of 50 to 70 wt% of a bisphenol A type epoxy resin having a number-average molecular weight of 900 to 1,200 and 30 to 50 wt% of a cresol novolak epoxy resin;  (B) 5 to 80 parts by weight of a phenolic novolak resin;  (C) 0.5 to 5 parts by weight of triphenylphosphine;   (D) 60 to 200 parts by weight of an inorganic powder;  and (E) 0.01 to 2 parts by weight of a microfine silica powder.         The epoxy resin based powder coating composition can be coated on electrical and electronic components at 90°-100°C with  retaining  the  high moisture resistance, storage stability and free-flowing properties.
Patent CA-1319832-C (CA)
Title: Infrared radiation probe for measuring the temperature of low-emissivity materials in a production line
Inventor: KRAPEZ JEAN-CLAUDE
IPC: G01J5/02
Filed: 1988-07-11
Granted: 1993-07-06
Abstract: ABSTRACT          The  invention  is  concerned with  an  infrared radiation probe for measuring the temperature at the sur-face of an object by measurement of the infrared radiation emitted from the surface.   The infrared radiation probe according  to the  invention  has  a head positionable in spaced relation to the object surface and comprising at least one angularly inclined reflective surface having a predetermined  surface  area  and  disposed  at  an  angle relative to the object surface such as to define with the object  surface  a  wedge-shaped  reflective  cavity  for increasing effective emissivity of the object surface by multiple  reflections,   and  a  bundle  of  optical  fibers having a predetermined angular  aperture at  a radiation receiving end connected to the probe head and arranged for collecting the infrared radiation reflected from within the cavity and transmitting the reflected infrared radia-tion to radiation detector means adapted to convert the infrared radiation  into a  signal representative  of the surface temperature of the object. The angular aperture of the optical fiber bundle, the angle defined by the reflec-tive surface and the surface area thereof are such as to substantially prevent stray radiation from being transmit-ted through the optical fibers.  The infrared radiation probe according to the invention is particularly useful for measuring the temperature of low-emissivity materials in a production line.
Patent CA-1323616-C (CA)
Title: Eccentric z-fold mailer with nesting capabilities
Inventor: HUTCHINSON WILBUR P
IPC: B65D27/00
Filed: 1988-08-04
Granted: 1993-10-26
Abstract: ABSTRACT         A mailer comprises a sheet having front and rear surfaces and top, bottom and side edges.  First and second fold lines are located between and parallel to the top and bottom edges, an address area is located between the top edge and the second fold line, and a text area is located between the first fold line and the bottom edge.  The distance between the top edge and the second fold line is substantially less than the distance between the first and second fold lines.  Strips of adhesive are disposed on the front surface adjacent the side edges between the bottom edge and first fold line, and on the rear surface adjacent the side edges between the top edge and the second fold line.  The arrangement is such that the sheet may be Z-folded to place the text area on the inside and the address area on the outside of the mailer, and when activated, the strips of adhesive will seal the mailer along the side edges.
Patent CA-1294281-C (CA)
Title: Specific 5-ht--antagonists
Inventor: COHEN MARLENE L
IPC: C07D487/08
Filed: 1988-09-06
Granted: 1992-01-14
Abstract: Abstract This invention provides bicyclic carboxylic esters and amides, their pharmaceutical formulations, and a method for their use in treating migraine, emesis, gastrointestinal disorders, schizophrenia, or anxiety in mammals.
Patent CA-1305016-C (CA)
Inventor: SASAJIMA KOJI
IPC: B60W10/10
Filed: 1988-10-18
Granted: 1992-07-14
Abstract: Abstract A  method  of  controlling  a speed  reduction  ratio  in  a continuously  variable speed transmission comprises  detecting  a vehicle  speed  when  a vehicle is decelerated  by  utilizing  an engine brake with an accelerator opening being essentially  zero, determining  a reference speed reduction ratio  corresponding  to the  detected  vehicle speed, detecting an actual  vehicle  speed change  rate, detecting an allowable vehicle speed  change  rate, comparing  the  actual change rate with  said  allowable  vehicle speed change rate, determining a corrected speed reduction  ratio by  adding  a correction to the reference speed  reduction  ratio based  on  a difference between the actual vehicle  speed  change rate and the allowable vehicle speed change rate, controlling the speed   reduction  ratio  of  the  continuously  variable   speed transmission so as to coincide with the corrected speed reduction ratio.
Patent CA-1312636-C (CA)
Title: Labyrinth seal coupling
Inventor: QUIRK MICHAEL J
IPC: F16D3/18
Filed: 1988-10-20
Granted: 1993-01-12
Abstract: LABYRINTH SEAL COUPLING                 ABSTRACT OF THE DISCLOSURE     A  seal  is  disclosed  made  up  of  a  ring  generally rectangular in cross section which has  an outer periphery that is adapted to be pressed into the inner periphery of a hollow cylindrical  sleeve of a gear coupling.   An annular flange  is  integrally attached to the ring  and  the  flange extends  radially  inwardly and  toward  and  is  adapted  to underlie the external teeth on the hub of the coupling.  The flange terminates  in an  inwardly directed sealing  surface that is adapted to sealingly engage an external cylindrical surface on the hub.   The sealing surface on the flange is adapted to be disposed on a plane passing through the center of curvature of the tips of the hub teeth perpendicular to the central axis of the coupling.
Patent CA-1320084-C (CA)
Title: Surgical drape with fluid collection system
Inventor: MORRIS H KRZEWINSKI
IPC: A61B46/20
Filed: 1988-10-27
Granted: 1993-07-13
Abstract: SURGICAL DRAPE WITH FLUID COLLECTION SYSTEM            Abstract A surgical drape comprising a main sheet and a fluid collection system for collecting and draining away from the site of surgery substantial quantities of irrigating liquids.  The fluid collection system comprises a bag means and a pair of fluid directing elements portions of which are secured to the drape in spaced-apart relationship near the primary operative area and remainder portions of which are secured to portions of the periphery of the bag.  In one preferred embodiment, the fluid collection system is made by suitably folding and appropriately securing a single sheet of liquid impervious material.  The main sheet is preferably a nonwoven fabric.  The liquid impervious sheet is preferably polyethylene.  The fluid directing elements may have adhesive strips at their ends by which to secure the fluid collection system to a limb of a patient.  The surgical drape may include a fenestrated region and having clipping tabs and tubing holders.  The drape is particularly suited for use in arthroscopic surgery of the knee.
Patent CA-1289082-C (CA)
Title: Electric vehicle
Inventor: SAKURAI HIROSHI
IPC: B60K7/00
Filed: 1988-10-27
Granted: 1991-09-17
Abstract: ABSTRACT OF THE DISCLOSURE An electric vehicle which has motor wheels of the direct-drive outer-rotor type which permit simplification and compaction of the motor wheels. Current regulating covers introduce ambient air for cooling the motors and reduce air resistance, and batteries and control devices are disposed symmetrically relative to the axial line of the vehicle body and to axial lines of the axles so as to reduce and uniformly distribute the weight of the vehicle.  All these devices contribute jointly to increasing the range of the electric vehicle.
Patent CA-1322410-C (CA)
Inventor: OISHI HIROAKI
IPC: G11B5/588
Filed: 1989-01-27
Granted: 1993-09-21
Abstract: ABSTRACT OF THE DISCLOSURE The present invention, in a magnetic recording and playback apparatus using a magnetic head disposed on a rotating drum for forming oblique recording tracks in succession on a magnetic tape to record or play back serial data along the same, comprises tracking control means for controlling the heightof the magnetic head to vary in the direction perpendicular to the recording track, speed control means for controlling the rotating speed of the rotating drum and/or the travelling speed of the magnetic tape in accordance with the bit transfer rate of the serial data so that the magnetic tape travels one reference track pitch while the rotating drum makes an integer number of rotations, and processor means for compressing along the time base the serial data so that the serial data is recorded while the magnetic head scans the recording track.
Patent CA-1334887-C (CA)
Title: Procede de marquage de la surface d'objets, moyens en  vue de la mise en oeuvre de ce procede et objets ainsi marques
Inventor: DELGRANGE JACQUES
IPC: B29C45/14
Filed: 1989-02-07
Granted: 1995-03-28
Abstract: L'invention se rapporte à un procédé de marquage de la surface d'objets, notamment en vue de pourvoir de signes distinctifs des surfaces non planes telles les surfaces latérales de boules, lequel procédé est caractérisé en ce que sur un support provisoire indépendamment de l'objet, on moule le matériau constituant le signe et sur le même support, on moule des dispositifs de repérage; dans le moule de l'objet, lequel est réalisé en au moins deux parties, on insère le support provisoire qu'à l'aide des dispositifs de repérage, on positionne par rapport à l'une des parties du moule; depuis la partie interne du moule, on injecte dans le moule le matériau qui réalisera l'objet et, à l'aide de la pression de ce matériau, on déforme localement le support provisoire et plaque sa face externe contre l'empreinte de la partie du moule qui formera la surface marquée de l'objet qui porte le signe; et on élimine le support provisoire et on rectifie la surface ainsi mise à jour.