baber/WOPTO huggingface dataset:
Patent CA-1229987-A (CA)
Title: Lawn mower dead man control
Inventor: WICK GERALD H
IPC: A01D34/68
Filed: 1983-09-02
Granted: 1987-12-08
Abstract: A lawn mower including a blade housing supporting a prime mover which drives a cutter blade. The prime mover causes rotation of a drive shaft and a clutch driven by the drive shaft is engagable and disengagable with the cutter blade. A handle is connected to the housing and a control is pivotally attached to the handle. The lawn mower further includes an arrangement operable to permit the engagement and disengagement of the clutch by the pivotal movement of the dead man control. This arrangement includes a flexible member connecting the control and the clutch and an arrangement restricting a substantial portion of the flexible member to a predetermined path along the handle. The restricting arrangement includes a pulley rotatably attached to the handle between the control and the housing and the flexible member is guided around the pulley. In one embodiment, the mower includes a mower propelling arrangement and an upper handle is movably attached to a guiding handle. A link connects the upper handle to the mower propelling arrangement and the link is movable in response to movement of the upper handle to cause engagement of the mower propelling arrangement. The self-propelled lawn mower has the control movably attached to the upper handle and the pulley has a periphery generally adjacent the attachment of the upper handle to the guiding handle so the upper handle and control can be operated independently.
Patent CA-1204150-A (CA)
Inventor: NINOMIYA HISAKAZU
IPC: H02P27/04
Filed: 1983-09-07
Granted: 1986-05-06
Abstract: ABSTRACT OF THE DISCLOSURE         When driving an AC motor with a PWM inverter, the width of a speed command signal is modulated by a carrrier to produce width modulated pulses for controlling main switching elements.  The with modu-lated pulses are liable to be attended with impulses which cause magntic vibrations in the AC motor, resulting in noises.  The generation of these impulses can be supressed by changing the amplification factor of an amplifier for the speed command signal or the ampli-tude of the carrier on the basis of the rate of change of the speed command signal.  Noises which would atten-dant on low speed running of the AC motor can be reduced by changing the amplification factor of the amplifier and the amplitude of the carrier on the basis of detected frequency of the speed command signal or revo-lution of the AC motor during low speed running.
Patent CA-1213471-A (CA)
Inventor: LIST HAROLD A
IPC: B61D3/02
Filed: 1983-09-26
Granted: 1986-11-04
Abstract: ABSTRACT OF THE DISCLOSURE:     A powered locomotive truck is disclosed, the truck having two wheelsets, each with an axle having a driving motor mounted thereon, the wheelsets being mounted in a rigid main truck frame, with freedom for relative yaw motion of the wheelsets, and each wheelset further having a steering arm or yoke movable with its wheelset during relative yaw motion of the wheelsets with respect to each other, the steering arms having an interconnection in a region between the wheelsets providing for interchange of yawing steering forces between the wheelsets.
Patent CA-1217364-A (CA)
Title: Combination stud driving tool and torque limiting  device
Inventor: MCKEAN JOHN A
IPC: B25B23/14
Filed: 1983-09-29
Granted: 1987-02-03
Abstract: ABSTRACT           There is provided a connector for use between rotatably driven tools, preferably an upper tool which is a torque limiting device, and a lower tool which is a stud driving tool.  The con-nector has a driven head disposed within a socket of an adapter housing, the driven head further being disposed within the body of the lower tool when the combination is assembled.  The connec-tor can also allow the body of the lower tool to be freely rotat-able with respect to both the adapter housing and the driven head when assembled.   Both  the torque  limiting device and the stud driving tool can be of improved configurations themselves.
Patent CA-1210308-A (CA)
Inventor: BARR FRED S
IPC: C12M1/00
Filed: 1983-10-05
Granted: 1986-08-26
Abstract: ABSTRACT       A .beta.-lactam-antibiotic susceptibility test material comprising an absorbent material on which a solid solution of .beta.-lactam antibiotic in an organic carrier is uniformly deposited.
Patent CA-1202374-A (CA)
Inventor: AOYAMA SHUKI
IPC: H05B6/64
Filed: 1983-10-17
Granted: 1986-03-25
Abstract: Abstract of the Disclosure An oven structure having an outer case and an inner case disposed within the outer case, both cases being sub-stantially box-like in shape.  The inner case positioned at a prescribed distance from an inner surface of the outer case, defines a heating chamber for receiving food-stuffs to be cooked.  A heat shielding plate is disposed inside of the outer case and oriented so as to oppose a rear plate of the inner case with a prescribed interval therebetween.  The shielding plate divides the space between the inner and outer cases into a first receiving chamber located at the side of a rear wall of the outer case and a second receiving chamber located at the side of the inner case.  Heating elements are provided in the heating chamber.  Each heating element has a heat generat-ing portion located within the heating chamber, and a pair of connecting portions attached to the rear plate.  Each connecting portion extends into the first receiving chamber through the rear plate and shielding plate.  In the first receiving chamber, a high frequency oscillator is provided, for radiating high frequency energy into the heating chamber, is disposed.  In the second receiving chamber, there is provided a controlling device for con-trolling the operations of the heaters and the high fre-quency oscillator.
Patent CA-1263800-A (CA)
Inventor: STOUTAMIRE DONALD W
IPC: C07K5/06
Filed: 1983-11-21
Granted: 1989-12-05
Abstract: PROCESS FOR THE PREPARATION OF OPTICALLY-ACTIVE               CYANOMETHYL ESTERS            Abstract of the Disclosure Stereoisomerically-enriched cyanomethyl esters are prepared by treating a non-symmetrical ketene or an alpha-chiral carboxylic acid halide or reactive derivative thereof with an optically-active alpha-hydroxynitrile.  Certain optically-active optionally substituted S-alpha-cyano-3-phenoxybenzyl alcohol intermediates are prepared by treating the corresponding aldehyde or ketone with a source of hydrogen cyanide in the presence of a substantially water-immiscible, aprotic solvent and a cyclo(D-phenylalanyl-D-histidine) as a catalyst.
Patent CA-1191781-A (CA)
Inventor: ROCHE JOSEPH R
IPC: E21B21/10
Filed: 1983-12-13
Granted: 1985-08-13
Abstract: FLOW DIVERTER   ABSTRACT       Apparatus adapted for connection to a drilling conduit beneath a drilling rig floor for diverting pressurized well bore  fluid in the  conduit from the rig and sealing the annulus between a pipe or other object and the conduit or closing the conduit in the absence of any object in the vertical  flow  path  in  the  conduit  is  disclosed.   The apparatus includes a housing, an annular packing element and an  annular piston  disposed  therein.   The  piston  when actuated serves the dual functions of closing the packing element about an object in the bore and opening a vent line connected to an outlet passage provided in the wall of the housing.  In another embodiment of the invention, two outlet passages in the housing are provided one connected to the vent line, the other to the rig drilling fluid system.  The piston is also provided with at least one hole such that when not actuated, the piston covers the vent line yet the piston hole aligns with the outlet passage to the fluid system.   When  actuated,  the  piston not  only  closes  the annular packing element, but prior to closing the vertical flow of the well bore, also opens the passage to the vent line and closes the passage to the rig fluid system.
Patent CA-1218937-A (CA)
Inventor: WRIGHT WILLIAM M D
IPC: H04R1/28
Filed: 1984-01-06
Granted: 1987-03-10
Abstract: LOUDSPEAKER SYSTEM WITH BOUNDARY LAYER CONTROL           ABSTRACT OF THE INVENTION       A  loudspeaker system is provided,  where  the construction comprises  a cabinet 12 that  has  two drivers  14,16 mounted in the front face 18  thereof, controlled  by  an electronic crossover  network  42.          The  front   face of the cabinet slopes upwardly  and rearwardly from bottom, 20 to top 22,  generally at an angle  of about 20 degrees to the  vertical;   it  is recessed from the forward extension of the sides, top and  bottom,  and is covered except over the drivers, with a compressed fibrous,  sound absorbing  material 24. The  material is compressed by the grill cloth 32  which is stretched at least across the  front  of the speaker.  The compressed fibrous, sound absorbing material attenuates surface waves that are propagated outwardly   from  each  of  the  woofer  and  tweeter parallel  to or at a shallow angle to the front  face of  the  cabinet,  and any reflections  from  cabinet corners  or  the like are  even  further  attenuated.          Because  of  the  sloped front  face,  the  crossover network  may be designed having constant group  delay time differences over the first one or two octaves on each side of the crossover frequency, so that  there is  better  phase  response and  minimal  interaction between the drivers.
Patent CA-1220067-A (CA)
Inventor: BOURASSA ALBERT
IPC: A01B59/06
Filed: 1984-01-20
Granted: 1987-04-07
Abstract: THREE-POINT HITCH ASSEMBLY            ABSTRACT OF THE DISCLOSURE          A three-point hitch assembly for attachment to a tractor includes a pair of lower lift arms adjust-ably coupled to an upper lifting assembly which can be raised and lowered by a pair of hydraulic cylinders. In order to provide a float action of the lower lift arms, a lever coupling the upper end of the pistons of the hydraulic cylinders to the lifting assembly can be latched and unlatched to pivot relative to the lift as-sembly.  The cylinders are coupled in series so as to ensure even lifting of the lift assembly.
Patent CA-1247235-A (CA)
Inventor: ISOGAWA TOSHIAKI
IPC: H04N5/14
Filed: 1984-02-10
Granted: 1988-12-20
Abstract: ABSTRACT OF THE DISCLOSURE      A video signal inverting circuit is disclosed, wherein a pedestal level of an output signal is selectively changed between a posi-mode and a nega-mode.    The pedestal level of the output video signal is set equal to the pedestal level of the posi-mode output video signal in the nega-mode in accordance with a nega-mode/ posi-mode control signal.    In spite of the nega-mode/posi-mode control signal, a level setting circuit for the posi-mode is used during horizontal blanking period in the nega-mode.
Patent CA-1212792-A (CA)
Inventor: SZETO CHARLES
IPC: G06F3/06
Filed: 1984-02-21
Granted: 1986-10-14
Abstract: METHOD OF AND APPARATUS FOR VOICE COMMUNICATION STORAGE AND FORWARDING WITH SIMULTANEOUS ACCESS                TO MULTIPLE USERS            ABSTRACT    This technique for voice or other similar communi-cation signal storage (such as recording) and forward-ing (such as playback) enables simultaneous access to multiple users through use of first-in-first-out memories (FIFO),microprocessor-controlled to fill intermediate memory RAMs at irregular intervals and to transfer the contents to main memory RAMs for ultimate disc recording, with playback therefrom microproces-sor-controlled at irregular intervals to transfer back recorded data blocks through the main memory RAMs and appropriate intermediate memory RAMs and FIFO memories associated with the appropriate playback channel or user; the various data transfers being controlled to avoid delays in the played back messages that are long enough to be perceived by the channel user, and with succeeding segments of data being transferred to intermediate memory RAMs by the time the transfer of the previous segment is complete, thereby to insure continuity of communication.
Patent CA-1246006-A (CA)
Inventor: WARDLE IAN
IPC: C25B9/19
Filed: 1984-03-16
Granted: 1988-12-06
Abstract: ABSTRACT                ELECTROLYTIC CELL        An electrolytic cell of the filter press type comprising a plurality of anodes, cathodes and gaskets, and ion-exchange membranes positioned between each adjacent anode and cathode to form in the cell a plurality of anode compartments and cathode compartments, the cell having two inlet headers from which electrolyte may be charged to the anode compartments of the cell and from which liquors may be charged to the cathode compartments of the cell, and two outlet headers from which products of electrolysis may be removed from the anode compartments and cathode compartments of the cell, the cell being provided with a common chamber in communication with each of the anode compartments and/or a common chamber in communication with each of the cathode compartments, said chamber(s) being provided with means for recirculating liquors to the anode compartments and/or to the cathode compartments, and said chamber(s) being in communication with the outlet headers from the anode compartments and/or the outlet headers from the cathode compartments.
Patent CA-1246440-A (CA)
Inventor: BEGHETTO LEONARDO
IPC: E21B43/017
Filed: 1984-04-11
Granted: 1988-12-13
Abstract: "UNDERSEA TEMPLATE FOR THE DRILLING OF WELLS FOR THE  EXPLOITATION OF HYDROCARBON POOLS UNDER THE SEA."           Abstract:         The present invention relates to an undersea template for the drilling of wells for the exploitation of hydrocarbon pools under the sea, which template is of variable dimensions and form so as to be able to adapt to any spacing and number of wells, and which is anchored to the seabed by mooring piles and provided with suitable well slots, characterized by the fact that the vertical restraint between the template and the well slots, or between the well slots and the anchorage column of the drill, or between the template and its mooring piles, consists of a flexible member which allows the weights coming to bear on the template to be reduced to the sole weight of the anchorage columns, with consequent weight reduction of the template itself.   The template, more-over, is provided with a particular system of levelling acting between the mooring piles and the respective well slots which system allows the template to be installed on beds of any kind since the levelling system in question consists of movement devices which can be positioned inside or outside the said piles, or on the well slots or on the template, provided they act between the template and the relative mooring piles so as to allow the necessary levelling to be made.
Patent CA-1238049-A (CA)
Inventor: BRAGG CHARLES D
IPC: C11D3/39
Filed: 1984-04-27
Granted: 1988-06-14
Abstract: Abstract A bleach auxiliary for use as a peroxygen bleach catalyst comprising a water-soluble complex of iron and a multi-dentate ligand-forming chelating agent having defined bleach catalytic activity and hydrolytic and oxidative stability.  The chelating agent is preferably a hyoroxycarboxylic acid havlng the general formula I         R[CnH2n-m(0H)m]CO2H    I   wherein R is CH2OH, CHO or CO2H, n is from 4 to 8 and m is from 3 to n, or a salt, lactone, ether, acid ester or boric ester thereof.  Bleach and laundry compositions containing the complex are also disclosed.
Patent CA-1228793-A (CA)
Inventor: HARDARSON VALDIMAR
IPC: A47C4/18
Filed: 1984-06-13
Granted: 1987-11-03
Abstract: ABSTRACT OF THE DISCLOSURE     A folding chair has a framework of two pivot frames joined at the center by means of a pivot and fitting one inside the other.  Each frame has an upper supporting frame member for a seat, a lower frame member and two side frame members that form the legs of the chair.  The seat is attached to the upper frame element of the outer pivot frame so as to be able to swing into a horizontal and a vertical end position.  The frame elements have extensions that project upwards above the seat.  A backrest is attached to these extensions in such a manner as to be able to pivot.  The two side frame members of the outer pivot frame and a side frame member of the inner pivot frame of the folding frame have extension pieces that project upwards above the circular seat.  A semicircular backrest that matches the shape of the seat is mounted on the ends of the extension pieces of the frame members of the outer pivot frame such that it can swing into a horizontal and a vertical end position.  The end of the extension piece of the side frame member of the inner pivot frame is supported in an arc-shaped guide in or on the backrest by means of a slide, such that it can slide through an angle of 90°.
Patent CA-1210088-A (CA)
Inventor: MAGARSHACK JOHN
IPC: H01P1/15
Filed: 1984-08-15
Granted: 1986-08-19
Abstract: ABSTRACT OF THE DISCLOSURE      The invention relates to an ultra-high frequency switching matrix.      Only the active components, i.e. field effect transistors, are used in the integrated circuit construction of the matrix according to the invention.  Coupling between an input channel and an output channel is obtained by a power divider on the input channel, which is a bi-drain transistor or a differential ampli-fier, a controllable switch in the form of a bi-grid transistor or two transistors in series, and a power combiner on the output channel, which is a multi-grid transistor or several transistors in series.      Application to telecommunications, particularly satellite telecommunications.
Patent CA-1224803-A (CA)
Inventor: ELIADES THEO I
IPC: C10M159/24
Filed: 1984-09-04
Granted: 1987-07-28
Abstract: ABSTRACT OF THE DISCLOSURE     Improved l-step process for the preparation of thixotropic overbased calcium sulfonate complex greases or thickened compositions containing calcium sulfonate as a dispersing agent and containing calcium carbonate in the form of calcite crystals in extremely finely divided form colloidally dispersed in said greases or thickened compositions.
Patent CA-1223862-A (CA)
Inventor: RADFORD STEVEN R
IPC: E21B25/14
Filed: 1984-09-07
Granted: 1987-07-07
Abstract: A HYDRAULIC LIFT INNER BARREL IN A DRILL STRING CORING TOOL         ABSTRACT OF THE DISCLOSURE          An automatically operable hydraulic lift inner barrel is devised to lift the inner tube of the core barrel on a drill tring.  An inner mandrel is axially disposed within the outer tube of the coring tool.   An outer piston which is selectively locked to the inner mandrel is telescopically and concentrically disposed about the inner mandrel.  Fluid is selectively diverted from the outer tube into the inner mandrel and inside the outer piston.    An  inner  locking  piston  within  the  inner  mandrel responds to the hydraulic pressure to unlock the outer piston from the inner mandrel.  The outer piston is then longitudinally displaced by the hydraulic pressure thereby lifting  the inner tube which is connected to it.  After the outer piston has moved a predetermined distance, the hydraulic pressure supplied to the inner  mandrel  and  inside  the  outer  piston  reaches  a  second predetermined magnitude.  Burst disks  are  then blown  thereby relieving the hydraulic pressure within the outer piston inner mandrel.  The inner locking piston reassumes its initial position thereby locking the inner mandrel once again to the outer piston which is now in an extended position.  Therefore, an inner tube within  a  coring  tool  can  be  selectively lifted,  moved  a predetermined longitudinal distance with respect to the outer tube, and then locked into position all in an automatic operation initiation by the initial diversion of hydraulic fluid to the inner mandrel and outer piston.
Patent CA-1237636-A (CA)
Inventor: REYNOLDS JOSEPH D
IPC: F16H61/24
Filed: 1984-11-02
Granted: 1988-06-07
Abstract: ABSTRACT OF THE DISCLOSURE          A shift control mechanism (10) for use in cooperation with a shift bar housing assembly (16) of a change gear transmission of the type comprising a shift bar housing (14) in which a plurality of axially moveable shift rails (18, 20, 22 and 24) are mounted is provided.  The shift control mechanism includes a control housing (12) in which a shift yoke (64) is pivotably mounted for pivotal movement about a pivot axis (68) in a direction (Y-Y) transverse the axes of the shift rails.  A shift lever (48) carrying a shift finger (52) at one end thereof and a shift knob (56) at the other end thereof is pivotably mounted in the shift yoke about an independent pivot axis (62) for pivotal movement in the direction (X-X) parallel the axes of the shift rails relative to the shift yoke and control housing.  The shift yoke defines a slot or gap (82) having a transverse width (80) greater than the transverse width (38) of any one of the shift rails but less than the combined transverse width of two of the shift rails through which the shift finger is pivotably moveable in the direction parallel the axes of the shift rails to provide a positive interlock mechanism.  The shift yoke carries stops (98) and (100) for engagement with the outer shift rails (18 and 24) to limit pivotal movement of the shift lever and shift yoke and to provide positive indication of correct selection of the outer two shift rails (18 and 24).  A spring biased detent mechanism (110) cooperates with a notched contact surface (112) to provide a feel for proper selection of the inner two shift rails (20 and 22).
Patent CA-1215165-A (CA)
Inventor: KONDOH YOSHIYUKI
IPC: H04N7/16
Filed: 1984-11-08
Granted: 1986-12-09
Abstract: ABSTRACT OF THE DISCLOSURE           A digital signal transmitting system includes a signal generator for producing a time division-multiplexed digital audio signals and service bit signals, a modulator for modulating a carrier in accordance with the time division-multiplexed signals and a transmitter to transmit the modulated carrier through a CATV (cable television) transmission line.  At a receiver side, the service bit signals are decoded so as to control the channel change-over of a television receiver when an emergency broadcast signal is transmitted.  A muting control circuit is also provided so as to mute an audio signal from a D/A (digital-to-analog) converter.
Patent CA-1209687-A (CA)
Title: Two-way catv system with aml commands
Inventor: CITTA RICHARD W
IPC: H04N7/16
Filed: 1984-12-07
Granted: 1986-08-12
Abstract: ABSTRACT OF THE DISCLOSURE In a two-way cable television (CATV) system, multiple subscriber address codes are provided during designated vertical blanking interval (VBI) lines of the video signal transmitted from the CATV headend to a plurality of system subscriber terminals. Each subscriber terminal is provided with a decoder in which is stored subscriber unique address code for comparison with the received subscriber address codes. If there is an address match, an address match latch (AML) signal is generated for each VBI line address match. The address match signals thus generated from a multibit pulse coded downstream command signal for initiating various functions in the CATV system, e.g., acknowledging subscriber upstream requests, subscriber interrogation, power adjustment, etc.
Patent CA-1242881-A (CA)
Inventor: MUSCHNER UDO
IPC: B22D41/08
Filed: 1984-12-14
Granted: 1988-10-11
Abstract: ABSTRACT        A valve plate  of refractory material for a sliding gate valve for the outlet of a metallurgical vessel comprises a plate body in which a first flow opening is formed through which molten metal may flow.  The plate body is also provided with a second flow opening which is closed by a plug of refractory material.  When the first flow opening is worn the plug is removed and the second flow opening may then be used.