baber/WOPTO huggingface dataset:
Patent CA-1124868-A (CA)
Inventor: CAMERON FRANK L
IPC: H03M1/00
Filed: 1979-01-25
Granted: 1982-06-01
Abstract: ABSTRACT OF THE DISCLOSURE   A charge redistribution circuit for pulse code modulation encoding suitable for use in apparatus for encoding voice in a companded code to maximize signal-to-noise performance.  The companded code is the fifteen segment approximation of the µ255 compression law, wherein each segment contains 16 equal size steps. The circuit includes a single binary weighted capacitor array for the generation of both segment and step boundaries of voice being encoded.  Each capacitor in the array has a pair of opposed plates, one plate of each capacitor being commonly coupled together. The circuit further includes a binary comparator having a first input adapted to be coupled to a reference bias potential and a second input coupled to the commonly coupled plates.  First switching means connect and disconnect the commonly coupled plates to and from ground potential.  Second switching means selectively connect a first common line to an input analog voice signal or to ground potential.  Third switching means selectively connect a second common like to a predetermined reference voltage Vref or to a reference voltage Vref/16 (which is 1/16 the predetermined voltage), and selectively couple the first comparator input to ground potential or to the reference bias potential.  Fourth switching means, including a switch for each capacitor, selectively couple the other plates of the capacitors to the first or to the second common line.  An eight-bit code generator provides a digital eight-bit output upon receipt of a read instruction and control control logic for controlling the four switching means, such logic being responsive to the output of the comparator and providing control signals to the generator.  Simultaneously, it causes the third switching means to connect the first comparator input to ground when the sampled input signal lies in the upper four segments and it causes the third switching means to connect the first comparator input to a reference bias potential when the sampled input signal lies in the lower four segments.
Patent CA-1102559-A (CA)
Inventor: HOFF STEPHEN J
IPC: A01D34/416
Filed: 1979-02-05
Granted: 1981-06-09
Abstract: Abstract A rotary cutter head for a lawn trimmer or the like has a die cast head body comprising a top circular wall and a depending hub, with a plate riveted to the bottom of the hub for forming a spool to receive a winding of flexible cutting line such as monofilament nylon.  A peripheral depending skirt on the circular wall is segmented by spaced downward open notches defined at their axial sides and their tops by convex faces, so as to form line apertures.          A molded bottom glide cup has its cylindrical side wall inside and spaced from the segmented skirt by a distance less than the line thickness, with its top edge close below the tops of the notches.  The body is mounted on a drive arbor by a nut seated in and removable by manual rotation of the glide cup relative to the body.         The cutting line end extends from the winding, over the cup wall edge, through the top of the notch, and thence outward in a free length which forms the cutting ele-ment.  Such wall edge and notch top confine the line to a predetermined plane of rotation, i.e., cutting plane, regard-less of axially where on the winding the free length is connected.  When the cutting length of the line is worn and needs renewing, it is pulled down out of the notch and against the cup side wall and then pulled circumferentially in the space between that wall and the surrounding segmented skirt to another notch.  The space is narrower than the line thickness and the cup is made stiff but yieldable to pass the line through the space.
Patent CA-1123825-A (CA)
Title: Nitroso-urea derivatives and processes  for producing them
Inventor: STANEK JAROSLAV
IPC: C07H5/06
Filed: 1979-02-19
Granted: 1982-05-18
Abstract: Case 4-12225/11191/+     NEW NITROSO-UREA DERIVATIVES AND PROCESSES FOR PRODUCING THEM     Abstract of the Disclosure The present invention relates to new nitroso-urea derivatives, particularly to N1-glucofuranosid-6-yl-N3-nitroso-ureas, of the general formula I     (I)   wherein aneone of R1 + R2 and R5 represent hydrogen, op-tionally substituted alkyl, aralkyl or acyl, or R1 and R2 together also represent alkylidene or cycloalkylidene, and R6 represents optionally substituted alkyl; and to pro-cesses for producing them.      The new compounds have a very good action in the case of several different forms of transplantable tumours and leukaemia, and also to some extent in the case of virus-induced leukaemia.
Patent CA-1108736-A (CA)
Inventor: BEIRNE PATRICK R
IPC: H04Q3/00
Filed: 1979-03-29
Granted: 1981-09-08
Abstract: SWITCHING MATRIX                   Abstract of the Disclosure A non-blocking switching network which has considerably fewer crosspoint switches than would otherwise be expected.  The network is comprised of a primary stage having n inputs and m outputs, a plurality of secondary stages each having m inputs and p1, p2,.,pp outputs, output mx being connected via switching crosspoints to all of the outputs px, p(x+1) and p(x+3), where x is an integral number of the mth output from 1 to ? , output my being dedicated and connected via switching crosspoints to all of the outputs of the yth secondary stage, where y = an integral number from ? + 1 to m.
Patent CA-1101407-A (CA)
Inventor: BAILEY EDWARD A
IPC: F16B/
Filed: 1979-05-03
Granted: 1981-05-19
Abstract: Abstract of the Disclosure A drill string comprising first and second drill members which are threadedly engaged with each other.  Each drill string member has an elongated body and a helical thread on the elongated body.  The thread may be roll formed.  The helical thread has a helical root portion, a helical crest portion and flank portions interposed between the root portion and the crest portion.  The helical crest portion has a maximum radial projection adjacent the flank portions.  The helical crest portion has a recess with the maximum depth thereof preferably disposed generally midway between the lateral extremities of the crest portion.  The recess may be generally V-shaped and has a maximum depth of about 0.003 to 0.030 inch.  In one embodiment, the sidewalls define an angle of about 2 to 20 degrees with respect to a plane passing transversely through the lateral edges of the crest.
Patent CA-1118013-A (CA)
Title: Locking mechanism for double-sliding sashes
Inventor: HOSOOKA SYUICHI
IPC: E05D15/10
Filed: 1979-07-18
Granted: 1982-02-09
Abstract: ABSTRACT OF THE DISCLOSURE      A locking mechanism for double-sliding sashes is provided to fasten inside and outside sashes and lock the fastened sashes to a window frame by an single operation using a handle.  The mechanism comprises a crescent sash fastener composed of a fastening member and a receptacle member.  The receptacle member is revolvable by being pushed by a projection of the fastening member which is revolved by a handle to fasten them together.  The revolving movement of the receptacle member is converted into a vertical movement of a driving rod provided in a meeting stile of the outside sash.  The vertical movement of the driving rod rotates locking levers which are linked to the rod at the upper and lower ends thereof to push the window frame in a firmly secured condition.
Patent CA-1113151-A (CA)
Title: Pile a depolarisation par l'air
Inventor: CHEVET ROBERT
IPC: H01M12/06
Filed: 1979-07-30
Granted: 1981-11-24
Abstract: Pile à dépolarisation par l'air comprenant un bac, une élcctrode négative disposée contre les parois du bac, une électrode positive disposée dans la partie centrale du bac et un circuit d'aération pour cette électrode; un espace gazeux pour l'expansion de l'electrode négative est prévu audessus de cette électrode et de l'électrolyte; il est limité par le circuit d'aération, les parois du bac-et une paroi imperméable à l'oxygéne, cette dernière comporte à sa partie périphériquc un rebord en gradin dont le pourtour est soudé aux parois du bac. Application aux piles dont l'électrode négative est une suspension de poudre de zinc dans un électrolyte alcalin gélifié. Figure unique
Patent CA-1096369-A (CA)
Inventor: NORMINTON ROBERT S
IPC: B66D1/30
Filed: 1979-08-02
Granted: 1981-02-24
Abstract: ABSTRACT OF THE DISCLOSURE           A novel compound drum hoist is provided herein.  It includes (a) a first or outer cable-spooling drum rotatably and drivingly mounted on a first shaft;  (b) a second or inner cable-spooling drum nested within the first drum, and rotatably and drivingly mounted on a second shaft disposed at an angle of 90°+30°, but preferably at a right angle to the first shaft;  (c) means for rotating the inner drum while keeping the outer drum stationary, thereby to spool faired cable onto the inner drum;  and (d) means for substantially simultaneously rotating the outer drum along with the inner drum, thereby to spool faired cable onto the outer drum.  Such hoist is thus suitably adapted to wind long lengths of cable with segmented fairings thereon without any significant risk of crushing the fairings.
Patent CA-1139771-A (CA)
Inventor: DRABEK JOZEF
IPC: C07D307/86
Filed: 1979-08-29
Granted: 1983-01-18
Abstract: ABSTRACT           Compounds of the formula I                                                 I wherein R1 and R2 are each C1-C4-alkyl, R3 is C1-C10-alkyl or C3-C6-cycloalkyl and R4 is 2-isopropoxyphenyl; 2-(1,3-dioxolan-2-yl)--phenyl; 2-methylthiomethylphenyl; 2-ethylthiomethylphenyl; 2-iso-propylphenyl; 3,5-dimethyl-4-methylthiophenyl or 2,2-dimethyl-(2H,3H)--dihydrobenzofuran-7-yl having valuable pesticidal in particular insecticidal properties.
Patent CA-1154892-A (CA)
Inventor: GORKE KLAUS
IPC: B27K3/15
Filed: 1979-09-05
Granted: 1983-10-04
Abstract: Abstract A treatment agent for wood and wooden articles, which contains a low-molecular-weight 1,3-butadiene polymer, containing amino groups, as an organic bonding agent:  (I) the said bonding agent having a double-bond content corresponding to an iodine number of at least 200 [g iodine/100 g], of which a double-bond content corresponding to an iodine number of at least 100, comprises cis-1,4 structural elements of the 1,3-butadiene polymer; (2) the content of amino groups amounts to at least 50 mg-atom of nitrogon/100 g of bonding agent;  (3) the basic polymer fur the 1,3-butadiene polymer carrying the amino groups has at least 70 mole per cent of butadiene units and a molecular weight (Mn) of between 500 and 6000.  Conventional additives, such as wood-protecting insecticides and fungicides, can also be present.
Patent CA-1119995-A (CA)
Inventor: KATZEN RAPHAEL
IPC: C10L1/18
Filed: 1979-10-09
Granted: 1982-03-16
Abstract: ABSTRACT                 DISTILLATION METHOD AND APPARATUS FOR MAKING MOTOR FUEL GRADE ANHYDROUS ALCOHOL      An improved distillation method and apparatus are provided for obtaining motor fuel grade anhydrous ethanol from fermentation or synthetic feedstocks. A three tower system is used comprising a stripper-rectifier tower in which the dilute feedstock is converted to a concentrated ethanol stream, a dehydra-ting tower in which water is removed from the concen-trated ethanol stream by azeotropic distillation, and a stripper tower for recovering the azeotropic agent.  The invention effects substantial energy savings by utilizing the heat content of the overhead vapors from the stripper-rectifier tower to supply the heat required for the dehydrating and stipper towers and by preheating the feedstock in stages utilizing the heat content of the overhead vapors from the dehydrating and stripper towers, the heat content of the overhead vapors from the stripper-rectifier tower, and the heat content of the bottoms from the stripper-rectifier tower.  Provision is also made for separately removing lower boiling and higher boiling impurities from the stripper-rectifier tower which may be blended into the anhydrous ethanol product from the dehydrating tower.
Patent CA-1129494-A (CA)
Title: Sliding notch pulse width modulation (pwm)
Inventor: LIPMAN KENNETH
IPC: H02M7/529
Filed: 1979-10-19
Granted: 1982-08-10
Abstract: SLIDING NOTCH PULSE WIDTH MODULATION (PWM) ABSTRACT OF THE DISCLOSURE    The RMS voltage of the output sine wave of a power inverter is regulated by pulse width modulation (PWM) of the rectangular waveform fundamental signal of the inverter bridge with a single sliding notch in each half cycle of the rectangular wave, each notch having a pulse width and posi-tion in the wave which is dependent on the required attenua-tion of the RMS value, and which may be varied, in a continu-ous manner, between a variable pulse width edge notch, a fixed pulse width notch which slides from an edge notch to a center notch position, and a variable pulse width center notch.
Patent CA-1128830-A (CA)
Title: Microemulsions aqueuses de substances  organiques
Inventor: TELLIER JACQUES
IPC: C09K8/58
Filed: 1979-11-13
Granted: 1982-08-03
Abstract: Nouvel agent tensioactif de formule: où R et R' sont des groupes hydrocarbonés, M étant un cation.  Il convient particulièrement à la production de microémulsions en présence de solutions aqueuses salines.  Une application importante en est la récupération assistée du pétrole brut.
Patent CA-1132126-A (CA)
Title: Supported nickel-cobalt-silica coprecipitated  hydrogenation catalyst
Inventor: CARTER JAMES L
IPC: C07C13/18
Filed: 1979-12-17
Granted: 1982-09-21
Abstract: ABSTRACT OF THE DISCLOSURE Supported coprecipicated nickel-cobalt-silica and nickel-cobalt-copper-silica hydrogenation catalysts are disclosed.   The catalysts are prepared by preparing an aqueous reaction mixture containing nickel and cobalt cation? (and optionally copper cations), silicate anions and solid porous carrier particles under agitation to form a coprecipitate of the nickel  cobalt and optionally copper) and silicate ion onto said soild porous support particles; heating the aqueous reaction mixture; and adding an alkaline precipitating agent to further precipitate the nickel, cobalt (and optionally copper) and silicate anions onto said solid porous carrier particles
Patent CA-1127507-A (CA)
Inventor: SCOTT LEWIS A
IPC: B27G19/00
Filed: 1980-02-25
Granted: 1982-07-13
Abstract: Abstract The specification discloses a motor housing, with a handle of the circular saw type, and a cantilever saw bar carrying a saw chain is secured to the housing in a position extending downwardly from a guide foot of the housing.  A retractable guard bar normally is held in a position holding a guard loop around the nose end of the saw bar, the guard bar being positioned at the rear of the saw bar.  The guard bar is mounted slidably on the motor housing, and, when a latch is manually released, the guard loop may be pushed up along the saw during a boring (nose cutting) operation.  In an alternate embodiment, a foot attachable to a foot of a circular saw motor carries a saw bar and a guard bar with a guard loop surrounding the nose end of the saw bar.
Patent CA-1123623-A (CA)
Inventor: BOCHAN JOHN
IPC: D06F13/02
Filed: 1980-03-06
Granted: 1982-05-18
Abstract: ABSTRACT OF THE DISCLOSURE           An agitator for a clothes washing machine including a center post extending into the clothes receiving re-ceptacle and upon which is mounted a vertically recipro-cable agitator member including an agitator element extending radially outward from the center post.  The agitator element is mounted on a  nut member which mates with a threaded formed on the center post, such that upon relative rotation between the agitator element and the center post, vertical reciprocation of the agitator element takes place to induce turnover motion of the clothes.  The center post is oscillated to cause the reciprocation by engagement of the agitator element with clothes disposed in the machine during the wash cycle. The agitator element is configured with a downwardly extending flared skirt portion having scalloped edges to increase the interengagement with the clothes.  The flared shape of the agitator element causes a net downward force on the clothes frawing them downwardly along the center post.  The agitator in one version also includes radial vanes located on an agitator bell portion integral with the center post or, alternatively, a plurality of agitator skirt elements are provided without the provision of the agitator radial vanes.  The agitator skirt elements may also be perforcated to produce a water surging action.
Patent CA-1134446-A (CA)
Title: Cable tester
Inventor: TRIHUS AXICOR T
IPC: G01R31/58
Filed: 1980-03-26
Granted: 1982-10-26
Abstract: ABSTRACT OF THE DISCLOSURE         A portable cable tester is used to test electrical cables between transformers of an electrical power distri-bution system.  The cable tester has a cylindrical housing with an elongated electrically conductive prod at one end for insertion into a receptacle connected to one conductor of the cable.  The second end of the housing has an  on/ off switch, a second terminal, and an annunciator, which is preferably in the form of spark gap electrodes.  The cable tester includes a capacitor (or capacitors) connected between the first and second terminals and charging circuit-ry for charging the capacitor.  In use, the elongated prod is inserted into the receptacle connected to the one conductor, and the second terminal is connected to the other conductor of the cable.  The on/off switch is turned on, and charging of the capacitor or capacitors is commenced.          When the voltage across the capacitor attains a threshold value, the annunciator is actuated.  In the event that there is a fault in the cable such as a short between the inner and outer conductors, the voltage across the capacitor cannot attain the threshhold value, and the annunciator is not actuated, thereby giving an indication of a faulty cable.
Patent CA-1157272-A (CA)
Inventor: BONIN JOHN H
IPC: B01J3/02
Filed: 1980-05-01
Granted: 1983-11-22
Abstract: ABSTRACT OF THE DISCLOSURE Apparatus is shown for controlling the feed rate of the material from a rotating feed device into a pressurized container.  This apparatus has utility in varying the rate of feed rate of the material.  The apparatus includes a rotor hub connected to a drive means and a material supply means.  Means for controlling the gas pressure at the entrance to the control orifice is included.  The control means is connected to a pressure regulator and control system.
Patent CA-1139200-A (CA)
Inventor: MCCLEAN JOHN W
IPC: B26D1/00
Filed: 1980-05-16
Granted: 1983-01-11
Abstract: ABSTRACT OF THE DISCLOSURE         A rotatable cutting blade assembly for a food processor having an annular flange intended to fit closely within a circular container of a food processor, the flange having in it an aperture above which a blade is mounted, a screw threaded arrangement being provided whereby the distance between the blade and flange may be adjusted so that sliced portions of vegetable material of any desired thickness may be produced.
Patent CA-1153761-A (CA)
Inventor: JONES RICHARD E
IPC: A61K31/565
Filed: 1980-05-21
Granted: 1983-09-13
Abstract: Abstract of the Invention A unique crystalline form of flunisolide is prepared by crystallizing flunisolide from a solution of an alkanol of three or four carbon atoms, e.g. n-butanol, containing 0.2 to 5%, preferably 1.0 to 4.0% by volume water.
Patent CA-1109301-A (CA)
Title: Torsion coiler
Inventor: RISI ALFRED
IPC: B21F3/04
Filed: 1980-06-24
Granted: 1981-09-22
Abstract: ABSTRACT                 This invention relates to a lathe for bending and forming metal rods and coiling springs comprising a chuck holding a cylindrical mandrel for rotation, a pick-up pin held on the face of the chuck to hold a portion of a wire in a fixed position on the chuck during rotation, a wire feed guide adjacent the chuck and mandrel and a shut-off control means adapted to stop rotation of the chuck after the wire coiling has advanced to a predetermined linear distance along the mandrel.
Patent CA-1151032-A (CA)
Inventor: HANDELSMAN STEVEN K
IPC: F16B41/00
Filed: 1980-07-07
Granted: 1983-08-02
Abstract: ABSTRACT        A carburetor idle speed set screw is enclosed by an assembly that prevents access to the screw so long as the assembly is in place, and, therefore, prevents adjustment of the set screw; the assembly includes a lower cup-shaped base member nested with an inverted cup-shaped cap having resilient fingers insertable within the lower member and held therein in a spring-lock detent-like manner by mating beads or dimples.
Patent CA-1139057-A (CA)
Inventor: CHARNLY DENIS H
IPC: C09J1/02
Filed: 1980-07-04
Granted: 1983-01-11
Abstract: ABSTRACT OF THE DISCLOSURE     An aqueous adhesive liquid with pronounced bonding capacity is provided which bonds to a broad variety of material in concentrated and diluted strength and is suit-able for use with matter subjected to stress and vibration.          An aqueous alkali-metal silicate solution is provided with a sufficient quantity of dry flocculent alkali-metal sili-cate particles dissolved in the aqueous alkali-metal sili-cate solution to yield a liquid having a density value in the range of 42.5 to 45,0 Baume degrees, the flocculent particles comprising an inorganic polysalt selected from the group consisting of borate salts of alkali metal and ammonium cations and phosphate salts of alkali-metal and ammonium cations, an alkali-metal silicate selected from the group consisting of sodium silicate and potassium sili-cate, and water.
Patent CA-1102031-A (CA)
Inventor: DALIBOR HORST
IPC: C09D133/12
Filed: 1980-07-10
Granted: 1981-05-26
Abstract: ABSTRACT OF THE DISCLOSURE           A copolymer solution consisting of A) 10 to 30 % by weight of inert organic solvents and B) 70 to 90% by weight of copolymers prepared by simultaneous and joint polymerisation and condensation reaction in the presence of mixtures of diacyl peroxides or peresters and alkyl hydroperoxides or dialkyl peroxides as polymerisation initiators by heating to 165 to 180°C, a mixture of said inert solvents A) having a boiling range from 150 to 200°C and components a) 5 - 24 % by weight of glycidyl esters of ?-alkylalkanemonocarboxylic acids and/or ?,?-dialkylalkanemonocarboxylic acids of the following empirical formula C12-14H22-26O3, followed by slow uniform addition of a mixture of b) 12 - 30 % by weight of hydroxyethyl acrylate and/or hydroxethyl methacrylate, c) 1 - 10 % by weight of acrylic acid, d1) 20 - 50 % by weight of styrene and d2) 5 - 35 % by weight of methyl methacrylate, components a, b, c, d1, and d2 and components A and B respectively having been employed in quantities to a total up to 100 % by weight each and with the proviso that the components a, b, and c have been employed in such quantities to obtain copolymers having a hydroxyl group content of 3.5 to 6.5 % by weight.   The present invention relates further to a process for the preparation of said copolymer solutions.  The copolymer solution can be employed either in reactive lacquers in an amount of 60 - 80 % by weight together with 20 - 40 % by weight of an organic polyisocyanate or in a coating composition which dries by physical means in an amount of 20 - 80 % by weight together with 20 - 80 % by weight of a thermoplastic copolymer.             Substrates of the most diverse types, for example porous or non-porous substrates, such as textile non-wovens, leather of plastics can be coated with these mixtures.  In every case high-gloss, pore-free, elastic and solvent-resistant coatings having a very hard surface are obtained.     Compared with the known copolymers, the advantages of the instant copolymers in combination with polyisocyanates are better solvent-resistance, higher abrasion resistance and better resistance to weathering in the Florida climate. Moreover, clear lacquers or pigmented lacquers do not exhibit crater formation or blistering.