baber/WOPTO huggingface dataset:
Patent CA-1227247-A (CA)
Inventor: DAUPHINEE THOMAS M
IPC: G01N27/07
Filed: 1985-02-05
Granted: 1987-09-22
Abstract: ABSTRACT OF THE DISCLOSURE           A liquid conductivity measuring circuit is described for use with a four electrode conductivity cell having two potential electrodes and two current electrodes positioned in the cell in spaced relation in a particular sequence with a first operational amplifier having its output connected and its inputs connected via an isolating capacitor and a buffer amplifier and a voltage setting resistance to a source of square-wave voltage, a second operational amplifier having its inputs connected to ground and via an isolating capacitor and its output connected to a reference resistance such as to control the current through the reference resistor to maintain one electrode at a constant potential, readout means being ad-aped to measure, on initiation of a single or small number of square-wave voltage cycles in a period short enough that no significant change of polarization of the potential electrodes can occur, the voltage between the positive and the negative half cycles or the change from zero to either half cycle of the voltage across the resistor, the measurement being a function of the current through the reference resistor and conductivity cell and therefore a measure of the conductivity of the liquid in or passing through the cell.
Patent CA-1226305-A (CA)
Inventor: SPROULL JAMES F
IPC: H05K1/03
Filed: 1985-02-08
Granted: 1987-09-01
Abstract: Abstract of the Disclosure Novel glass fibers are described which contain 58 to 60 percent SiO2, 11 to 13 percent Al2O3, 21 to 23 percent CaO, 2 to 4 percent MgO and 1 to 5 percent TiO2.  The fibers also have a seed count of 5 seeds or less per cc of glass and an electrical leakage value of 2.8 nanoamperes or less as measured by a test described in the specification.
Patent CA-1269258-A (CA)
Title: Apparatus for cleaning in particular teeth
Inventor: GHEDINI LUIGI
IPC: A61C3/025
Filed: 1985-02-25
Granted: 1990-05-22
Abstract: APPARATUS FOR CLEANING IN PARTICULAR TEETH Disclosed herein is an apparatus for cleaning in particular teeth, that operates in accordance with the mechanical sandblasting principle and is equipped with a barrel provided with a multiple nozzle, and with means of connection identical to those of a dentistry turbodrill. In order to obtain a gas-powder mixture that is permanently constant or, through control means, is rendered variable, the handgrip of the barrel is fashioned hollow and divided into a receiving chamber, a swirl precombustion chamber and a swirl chamber communicating via elements having a calibrated passage hole. The powder and a small quantity of gas are inserted into the receiving chamber, while the major quantity of gas in inserted into the swirl precombustion chamber through a powder percentage regulator.
Patent CA-1231755-A (CA)
Inventor: GYUGYI LASZLO
IPC: H02P27/16
Filed: 1985-04-01
Granted: 1988-01-19
Abstract: ABSTRACT OF THE DISCLOSURE         In  a  static  frequency  changer  controlled by adjusting the time of conduction of the bilateral switching units forming static converters, the time of conduction is split  into n time intervals of respective subdurations adding up to be equivalent to the effective time of con-duction of the controlled switching unit,  and such sub-durations are spread and distributed throughout the time period of control of the switching unit both within the original switching pattern of each converter and between the effective times of conduction of the respective con-verters,  thereby to minimize harmonic distortion of the input supply current of the frequency changer.
Patent CA-1223082-A (CA)
Inventor: NELSON NORVELL J
IPC: H05K3/06
Filed: 1985-04-15
Granted: 1987-06-16
Abstract: ABSTRACT            Process and apparatus for anisotropically etching copper through a nickel-gold mask on a circuit board.  An electrical connection is made between the copper and the reactor wall or another electrical conductor contacted by the etching solution.  The copper is removed anisotropically, without undercutting so lateral etching of the copper beneath the nickel-gold mask
Patent CA-1254921-A (CA)
Inventor: ZORTMAN ZEDEKIAH Z
IPC: E05B65/10
Filed: 1985-04-24
Granted: 1989-05-30
Abstract: CRASH BAR DOOR LOCKING DEVICE            Abstract A crash bar door locking device is provided, suited for mounting on the inside of a swinging door. The crash bar is mounted horizontally across the door providing  ready  access  by  movement  in  the  outside direction.  The crash bar  activates a pivotal  lever which causes a latch bolt to rotate inwardly and dis-engage from a door strike.  The pivotal lever provides a deadbolt feature by preventing the rotation of the latch bolt.  A release is incorporated in the latch bolt and allows the latch bolt to rotate when the re-lease engages the door strike as the  door closes.  An additional unlocking mechanism may be provided for re-tracting the latch bolt from the outside of the door independently of the crossbar.  A firelocking mechan-ism may be incorporated in the latch bolt  to secure the latch bolt when a fire occurs.  Two pins with a spring between them are retained by fusible plugs at either end of a bore in the latch bolt, so that the latch bolt operates as normal lock on the door.  When a fire occurs,  the  fusible plugs will melt and the pins will go to an extended position in which they in-teract with a bracket mounted on the door and prevent the latch bolt from disengaging the door strike so that the door will remain closed.
Patent CA-1232969-A (CA)
Inventor: CULLEY PAUL R
IPC: G06F12/00
Filed: 1985-06-07
Granted: 1988-02-16
Abstract: PERSONAL COMPUTER HAVING NORMAL AND HIGH SPEED EXECUTION MODES                 ABSTRACT OF THE INVENTION         A personal computer is disclosed having a high speed microprocessor which executes in either a FAST mode or a SLOW mode application programs written for a slow speed microprocessor.  The slow speed microprocessor contains a pre-fetch queue that is smaller than the pre-fetch gueue of the high speed microprocessor.  A logic means is included, responsive to a mode select signal for controlling the wait state of said high speed micro-processor when in the SLOW speed mode so that every other word accessed to said RAM memory requires two consecutive word accesses to the same memory address to obtain the contents of the addressed location thereby enabling said high speed microprocessor to execute application programs in the SLOW mode, on the average, at substantially the same speed as the program normally runs on the slow speed microprocessor.
Patent CA-1244486-A (CA)
Inventor: BRAY DONALD J
IPC: C04B35/16
Filed: 1985-07-08
Granted: 1988-11-08
Abstract: Abstract Disclosed are insulating refractory and method for containing a molten metal such as molten aluminum in an insulating castable or moldable having more than about 2% by weight borosilicate frit inhibitor, the inhibitor containing less than a predominant component of zinc or zinc compound. Insulating refractory properties and resistance to molten metal are provided.
Patent CA-1247997-A (CA)
Inventor: ECK LEONARD F
IPC: B21D1/14
Filed: 1985-08-19
Granted: 1989-01-03
Abstract: VEHICLE REPAIR AND ALIGNMENT RACK                Abstract of the Disclosure A relatively lightweight, rigid, mobile work rack for correcting and aligning misshapen vehicle frame and body portions comprises spaced, parallel beam members and a central open space for unhindered access which extends the entire length of the rack.  Front and rear pairs of legs individually or in combination between pairs swing up and down to selectively lower the entire rack or to tilt either the front or the rear end.  The legs are mounted so that the entire rack fully lowers to rest upon the work shop floor and raises to a handy working height.  A locking arrangement permits elevation of the rack at intermediate heights.          Force applying structures are also selectively mountable to the work rack at various areas about its periphery and are braced for pulls to repair damaged vehicles.
Patent CA-1217603-A (CA)
Inventor: ROBERTSON JOEAB A
IPC: A61H33/02
Filed: 1985-09-03
Granted: 1987-02-10
Abstract: ABSTRACT           An air control valve is provided for use in a spa to regulate the flow of air to a hydrotherapy jet in which a recessed control knob is accessible at a rim of the spa to actuate a movable valve member to selectively constrict or dilate an air flow passage through the valve body which has an air intake opening underneath the spa rim to isolate the noise associated with the intake opening from the user.
Patent CA-1267434-A (CA)
Inventor: HALLGREN LEANDER
IPC: H01H3/12
Filed: 1985-09-23
Granted: 1990-04-03
Abstract: ABSTRACT Disclosed i  a large-area, high-sensitivity switch comprising a cover plate comparable in size to a human hand.  The switch further comprise  a base and bias apparatus for biasing the plate away from the base.  The bias apparatus comprises a snap-action switch having a biased button which activates the switch when the button is depressed.  The switch is positioned between the plate and the base so that movement of one of the plate or the base toward the other will activate the switch.  A plurality of cover plate restraining apparatus allow one of the plate or the base to move toward the other and provide a rigid, permanent limitation on the distance by which the plate and the base can be separated.  The plurality of cover plate restraining apparatus comprise apparatus for causing a leveraged depression of the button by a downward pressure on the plate at any location away from an axis orthogonal to the plate and in line with the button.
Patent CA-1228733-A (CA)
Inventor: GRIMES PHILIP M
IPC: B24D13/00
Filed: 1985-11-19
Granted: 1987-11-03
Abstract: ABSTRACT          A self-supporting grinding disk for mounting on the shaft of a power tool for rotation, the disk having an abrasive grinding face for parallel grinding and a peripheral edge for edge grinding comprising a round disk body of thermoplastics material, said disk body having a central hub portion for securing the disk to a shaft and a flexible workpiece-contour-following portion outwardly of the hub portion, a layer of thermosetting plastics resin which contains abrasive grit coated directly on the disk body to comprise the grinding face of said grinding disk, the plastics resin being curable at a temperature of less than 125°C and cured, the thermosetting plastics resin being compatible with the thermoplastics material of the disk body and being bonded and adhesively fused thereto, the thickness of the disk body outwardly of the hub being between five one thousandths and fifty one thousandths of an inch, the diameter of the disk body being no more than four inches, the disk body having a coefficient of linear thermal expansion between .00005 and .0001 inch per inch per degree centigrade as tested by the A.S.T.M. testing standard D 696-79, the disk body being composed substantially of a polyamide thermoplastic material and having a deflection temperature under flexural load of 264 psi of between 125°F and 350°F according to the A.S.T.M. testing standard D648-82, the disk body having a melting point to withstand the heat of grinding friction in parallel grinding operations but to be smoothly and continuously heat disintegratable at the same rate as the layer of thermosetting plastics resin which contains the abrasive when the periphery of the grinding disk is used for edge grinding a work piece whereby to present fresh grinding abrasive to the work piece as the diameter of the disk decreases.
Patent CA-1260196-A (CA)
Inventor: GEYER OTTO-CHRISTIAN
IPC: C08F271/00
Filed: 1985-12-09
Granted: 1989-09-26
Abstract: SOFT, WITH A LOW HYDROPHILITY CONTACTOPTICAL ARTICLES        A B S T R A C T     The present invention relates to contactoptical shaped articles in particular contact lenses and scleral lenses, of water-absorbing cross-linked copolymers of olefinically unsaturated monomers having a softening point in the hydrated state below 35°C, characterized in that the copolymer has. (a)  a water-absorbing capacity at 25°C of 4 to 50 %, by weight, based on the hydrated state; and (b)  a glass transition temperature in the dry state of 25 to 55°C.
Patent CA-1241593-A (CA)
Inventor: WANG JENG-HWEI
IPC: B27B5/22
Filed: 1985-12-13
Granted: 1988-09-06
Abstract: ABSTRACT            Apparatus for end trimming pieces of lumber which includes a main conveyor having an upper surface for supporting and moving pieces of lumber horizontally sideways in sequence from an infed end thereof to an outfeed end thereof along a selected path between first and second spaced apart boundary lines, and first, second, third and  fourth processing stages in said sequence downstream from one another along said path.  Each processing stage includes an abutment fence for engagement by an end of a piece of lumber on the conveyor, a transfer conveyor for moving the pieces of lumber in a direction transverse to the conveyor path into engagement with the fence associated therewith and a saw for cutting an unwanted end portion from the pieces of lumber.  The abutment fence and saw of the first and third stages are adjacent the first boundary line and that of the second and fourth stages is adjacent the second boundary line.
Patent CA-1256777-A (CA)
Inventor: VANDERZANDEN EUGENE J
IPC: C08K5/098
Filed: 1986-01-09
Granted: 1989-07-04
Abstract: ABSTRACT OF THE DISCLOSURE The treatment of pavement surfaces with a rapid setting high float asphalt emulsion which comprises 50 to 75 weight percent asphalt, about 0.01 to 1.0 weight percent anionic emulsifier, about 0.2 to 15 weight percent carboxylic acid esters, sufficient base to provide said emulsion with a pH greater than about 9, and water.
Patent CA-1265768-A (CA)
Inventor: PAOLETTI LUCIANO
IPC: A23L2/38
Filed: 1986-01-31
Granted: 1990-02-13
Abstract: ABSTRACT     An emulsifier unit particularly for emulsifying steam and milk to prepare "cappuccino's" comprises a steam delivery conduit (2) in communication with a steam generator and opening into a suction chamber (20) into which a milk delivery conduit (21) is led, said suction chamber (20) being in communication with an emulsifying chamber (15) provided with an outward dispersing opening (16).
Patent CA-1259704-A (CA)
Inventor: EDELMANN GEORGE B
IPC: G06Q50/00
Filed: 1986-04-16
Granted: 1989-09-19
Abstract: SYSTEM FOR DETECTING UNACCOUNTED FOR PRINTING IN A VALUE PRINTING SYSTEM              ABSTRACT OF THE DISCLOSURE A system for detecting fraudulent imprints on documents is disclosed.  The system comprises a metering device, a host and a verifying facility.  The metering device provides a validation signal to the host and its associated printer. Thereafter, the printer prints information which includes information from the validation signal.  Thereafter the information printed on a mailpiece can be validated at the verifying facility by detecting the validation information provided by the metering device.  The system provides a method to make a secure metering device without an integral printer.  This value printing system provides for a secure system that will allow for the detection of fraudulent imprints at a verifying facility.
Patent CA-1222649-A (CA)
Inventor: CHURCH PAT
IPC: B25F3/00
Filed: 1986-04-29
Granted: 1987-06-09
Abstract: ABSTRACT OF THE DISCLOSURE:   The disclosure relates to a MODULAR POWER OPERABLE JAW TOOL providing for optional selection of symetrical or asyrnetrical camming jaw type work head modules and battery powered or pneumatic power handle modules by the standardization or interface between said modules All power handle modules have an output shaft of the linear acting, non-rotational, manually selected fixed stroke type with an axial externally threaded section at the interface end. All power handle module bodies have an externally threaded anular projection coaxial with said output shaft. All work head modules have an axial non-rotational camming shaft with an interface communicative axial externally threaded cavity. All work head module bodies have a coaxial knurled collar nut held captive on the interface end of their cylindrical bodies by work jaws on the work end and a peripheral flange on the interface end of the body. The knurled collar nut is free to move coaxially and rotate within these limits specified. Interfacing of work head module to power handle module is manual requiring axial alignment, engagement and rotational securement of the camming shafts communicative axial internally threaded cavity with the communicative compatible axial externally threaded section of the output shaft in the power handle module. The work head module body is united to the power handle module body manually by the alignment, engagement and rotational securement of the coaxial knurled collar nut on the work head module and the compatible coaxial externally threaded anular projection of the power handle module body to complete the union.
Patent CA-1264826-A (CA)
Inventor: BEALE DAVID G
IPC: H03F3/183
Filed: 1986-07-22
Granted: 1990-01-23
Abstract: ABSTRACT OF THE DISCLOSURE           The  present  disclosure   describes   a   com-posite   audio   amplifier.    The  amplifier    comprises at         least        one        symmetrical,        dual polarity audio amplifier power supply and a class AB audio amplifier circuit,  the  symmetrical,  dual polarity audio amplifier power supply comprising a first and second reg-ulator  circuit;  the  first  regulator  circuit  deriving  a reference  signal from  a  negative  regulated  output  and the  second  regulator  circuit  deriving  a reference  from a positive regulated output; the first and second regulator circuit deriving power from the positive regulated output and common and the negative regulated output and common respectively;  the class AB audio amplifier circuit com-prising  in  combination  a  primary  operational  amplifier driving  complementary  power  transistor  output  stages; the  signal  output  of  the primary  operational  amplifier being  fed  to  complementary  symmetric  first  and  second arms of a current shunt network,  the current shunt net-work adapted to shunt base current from the complementary power  transistor  output  stages  when  the  signal  output of  the  primary  operational  amplifier  exceeds  a  preset maximum threshold and, at the same time,  the signal from said power output drops below a preset minimum threshold.
Patent CA-1253209-A (CA)
Title: Waveguide containing communication and sensing systems
Inventor: COHEN LEONARD G
IPC: G02B6/00
Filed: 1986-07-29
Granted: 1989-04-25
Abstract: - 28 -WAVEGUIDE-CONTAINING COMMUNICATION AND SENSING SYSTEMS Abstract An optical system, including a waveguide such as an optical fiber, in which optical signals are noninvasively coupled into the waveguide at any point along the length of the waveguide, is disclosed. This is achieved by coupling substantially constant intensity electromagnetic radiation into the waveguide, and then impinging upon the waveguide a directed beam of energy, such as electromagnetic radiation or heat, from an energy source. Alternatively, the waveguide is impinged upon by a combination of an energy beam and a stimulus, e.g., a temperature change. The energy beam, or energy beam and stimulus, induce at least partial absorption of the guided, substantially constant intensity electromagnetic radiation by radiation-absorbing material in the waveguide, to produce the desired optical signal.
Patent CA-1265702-A (CA)
Inventor: QUATE CALVIN F
IPC: B41J2/015
Filed: 1986-08-18
Granted: 1990-02-13
Abstract: ABSTRACT      A nozzleless print head for ink jet printing and the like  comprises  one or more essentially planar surface acoustic  wave  transducers  which  are  submerged  at  a predetermined depth in a liquid filled reservoir, so that each of the transducers launches a converging cone   of acoustic,  coherent  waves  into  the  reservoir,  thereby producing an acoustic beam which comes to a focus at or near the surface of the reservoir )i.e.,  the liquid/air interface).  The acoustic beam may be intensity modulated to control the ejection timing, or an external source may be  used  to  extract  droplets  from  the  acoustically excited  liquid  on  the  surface  of  the  reservoir  on demand.    Regardless  of the timing mechanism employed. the size of the ejected droplets is determined by the waist diameter of the focused acoustic beam.  To control, the  direction  in  which  the  droplets  are  ejected, provision  may  be  made  for  producing  a  controllable acoustical  asymmetry for steering the focused acoustic beam in a direction generally parallel to the surface of the reservoir.
Patent CA-1257347-A (CA)
Inventor: KOSUGI YUHEI
IPC: H05K1/18
Filed: 1986-10-14
Granted: 1989-07-11
Abstract: Abstract of the Disclosure:     In a microwave connector assembly for electrical connection of adjacent ones of microwave circuit components, an internal conductor is accommodated in a cavity formed by an external conductor member and is supported by an insulator support member within the cavity.  The internal conductor is operable as a leaf spring and elastically brought into contact with a pair of contacts fixed to radio frequency terminals of the adjacent microwave circuit components.  The external conductor member may be formed either by a base plate for mounting the circuit components or by a conductive case which is covered with a conductive cap and which is located in an opening of the base plate.  A print board may mechanically be attached to the base plate so as to supply a bias voltage to each circuit component through bias terminals thereof.
Patent CA-1258810-A (CA)
Title: Self-retaining anchoring assembly and seal therefor
Inventor: MACCUAIG STUART J
IPC: B60T11/04
Filed: 1986-11-10
Granted: 1989-08-29
Abstract: ABSTRACT OF THE DISCLOSURE          The invention provides a sealing arrangement for use with a self-retaining anchoring assembly whereby a coaxial cable is mounted within a throughbore in a support member.  The sealing arrangement includes an elongate annular seal of flexible resilient material having a first cylindrical end portion which is sealingly fastened to the anchoring assembly, a second cylindrical end portion providing internal wiper means for sealing engagement with the inner cable member, and an intermediate portion tapering from the first to the second cylindrical portion and formed with annular corrugations imparting flexibility to the seal in all directions transverse to its axis.
Patent CA-1271627-A (CA)
Inventor: MCCARTHY FRANCIS W
IPC: G09D3/00
Filed: 1987-03-18
Granted: 1990-07-17
Abstract: ABSTRACT OF THE DISCLOSURE         There is disclosed a calendar/file/memo system provided with a housing dimensioned  to permit hanging on a wall, and having an opening at the top to receive a multi-panel, accordian-folded sheet which serves as a calendar/memo/pad or diary, and at the same time, as a folder for storing sheet material such as notes, cards, memos and invoices.  Cutouts in the front face of the housing provide access for viewing of and for making notations on the exposed calendar/pad face and the backs of the panels preferably bear ruling lines or other notation for entry of data.
Patent CA-1271459-A (CA)
Inventor: BEDWELL HUBERT A
IPC: B65D83/00
Filed: 1987-08-07
Granted: 1990-07-10
Abstract: ABSTRACT OF THE DISCLOSURE               A machine for causing discharge of plastic material from a bag-like container having flexible walls. The machine includes a first plate-like member pivotally mounted on the framework and a second plate-like member pivotally mounted on the framework. A spring urges the plate-like members together to grip the bag-like con-tainer therebetween. A free edge of the second plate-like member is urged toward the first plate-like member to squeeze the bag-like container. A spout receives contents of the bag-like container as the bag-like container is squeezed.