baber/WOPTO huggingface dataset:
Patent CA-2011889-C (CA)
Title: Secondary electron emitter with symmetrical protuberances
Inventor: SCHAEFFER GREGORY T
IPC: H01J19/14
Filed: 1990-03-09
Granted: 1993-12-14
Abstract: ABSTRACT OF THE DISCLOSURE     The present invention discloses an enhanced secondary emitter cathode suitable for use in a typical crossed-field amplifier.  The emitter surfaces of the cathode are formed into protuberances or knurls.   The cathode's secondary emission characteristics are enhanced by providing protuber-ances with more surface area for electrons to bombard and for  electrons  to be  emitted  from.    The  protuberances increase the variety of angles of incidence of bombarding electrons thereby increasing the probability that bombarded electrons can escape the cathode's surfaces.
Patent CA-2018177-C (CA)
Title: Pressurized screening device
Inventor: HOLOPAINEN PENTTI
IPC: D21D5/02
Filed: 1990-06-04
Granted: 1999-07-27
Abstract: The pressurized screening device according to the invention is designed for screening fibre pulps, especially paper pulp or corresponding. The pressurized screening device is provided with a screenplate (11) with perforations (12), cleaning means (17), being in connection with and moving relative to the screenplate (11), means (2, 4, 15) for generating the relative motion between the screen plate (11) and said the cleaning means (17), piping means (8, 9, 10) firstly for introducing fibre pulp into the pressurized screening device, secondly for conducting the accepted fibre pulp into the next process stage and thirdly for discharging rejected pulp from the pressurized screening device preferably to be returned into the pressurized screening device, and guiding devices (13) for shifting the flow direction of unscreened fibre pulp to a direction essentially perpendicular to the screenplate (11). The guiding devices (13) has a combination of several compartments (27) for guiding the flow of fibre pulp. They are comprised of side walls (20), back wall (24) and baffle blades (28).
Patent CA-2019299-C (CA)
Title: Multiprocessor system with multiple instruction sources
Inventor: FRANK STEVEN
IPC: G06F11/07
Filed: 1990-06-19
Granted: 2002-01-15
Abstract: Digital multiprocessor methods and apparatus comprise a plurality of processors, including a first processor for normally processing an instruction stream including instructions from a first instruction source. At least one of the processors can transmit inserted-instructions to the first processor. Inserted-instructions are executed by the first processor in the same manner as, and without affecting the sequence of, instructions from the first instruction source. The first instruction source can be a memory element, including an instruction cache element for storing digital values representative of instructions and program steps, or an execution unit (CEU) which asserts signals to the instruction cache element to cause instructions to be transmitted to the CEU. The processors include input/output (I/O) processors having direct memory access (DMA) insert elements, which respond to a peripheral device to generate DMA inserted-instructions. These DMA inserted-instructions are executable by the first processing element in the same mariner as, and without affecting processing sequence of, the instructions from the first instruction source.
Patent CA-2020397-C (CA)
Title: Electronic countermeasure system
Inventor: SANDERS ROYDEN C JR
IPC: G01S7/38
Filed: 1990-07-04
Granted: 2000-11-21
Abstract: A radar jamming system comprising a target vehicle and a slave vehicle, a master threat radar detection system in the target vehicle and a slave transmitter system in the slave vehicle, a data link between the target vehicle and the slave vehicle, a threat analyzer carried by the target vehicle, said threat analyzer being capable of measuring the distance between the target vehicle and slave vehicle, means for calculating a suitable time delay signal and doppler shift for masking the target vehicle, said signals being transmitted to said slave vehicle by said data link, and means carried by said slave vehicle under control of the data link for generating and transmitting a radar pulse having the calculated time delay and doppler shift so that said pulse is coincident in both time and frequency with. the target signal.
Patent CA-2020400-C (CA)
Inventor: BRAUN EUGENE RALPH
IPC: F16H59/70
Filed: 1990-07-04
Granted: 1995-08-15
Abstract: A control system (104) for semi-automatically executing automatically and manually selected upshifts and downshifts of a mechanical transmission system (10) is provided.  The control system includes a central processing unit (106) for receiving input signals indicative of transmission input shaft (16) and output shaft (90) speeds, from a driver control console (108) indicative of manual selection of upshifts or downshifts from a currently engaged gear ratio, or manual selection of operation in an automatic preselect mode, and from a sensor (150) to sense operator manual issuance of shift enable signals, and processing the same in accordance with predetermined logic rule to issue command output signals to a transmission actuator (112, 70, 96) to implement the selected shifts upon a manually caused torque reversal of the transmission and manual substantial synchronization of the transmission in the selected ratio thereafter.  Under certain conditions, such as relatively high or relatively low vehicle speed, implementation of automatically preselected shifts is prohibited until a shift enable signal is received.
Patent CA-2022013-C (CA)
Title: Alkoxylated sugar and sugar alcohol esters useful as fat substitutes
Inventor: ENNIS JOHN LOGAN
IPC: A23L1/308
Filed: 1990-07-26
Granted: 1995-11-21
Abstract: The present  invention relates to a  fat  substitute comprising an alkoxylated sugar or sugar alcohol sucrose fatty acid ester.   Between 1 and about 50 alkoxyl groups are attached by ether linkages to each polyol molecule. Each alkoxylated polyol  is esterified with between about 6 and about 8 fatty acid groups, the fatty acids containing between about 2 and about 24 carbon atoms.  Preferred alkoxyl groups are derived from cyclic ethers selected from propylene oxide, ethylene oxide,  and mixtures thereof.  The invention also relates to a low calorie fat-containing food composition which comprises:  (a) non-fat ingredients; and (b) fat ingredients, from about 10% to about 100% by weight of said fat ingredients consisting essentially of the above-described fat substitute.
Patent CA-2022859-C (CA)
Inventor: NOVAK CARL V
IPC: H05K7/14
Filed: 1990-08-08
Granted: 1993-06-22
Abstract: CIRCUIT BOARD SPACING AND SUPPORT APPARATUS     Abstract of the Disclosure A single piece of material having notches (101), on the same side, on each end of the apparatus. An indentation (103) opposite each notch (101) creates a narrow, flexible region (106) on each end of the apparatus. A printed circuit board inserted in one of the notches (101) will cause the lower portion (107) below the notch (101) to flex, thereby allowing the board entry into the narrow notch (101) opening.  Once the board has been inserted, the resilient material of the apparatus will cause the flexed lower portion (107) to attempt to return to its original shape. This will force the lower portion (107) of the notch (101) up against the board thereby holding the board in place against the upper portion of the notch (101). This simple design allows the apparatus to be manufactured relatively inexpensively.
Patent CA-2026100-C (CA)
Inventor: FELSON RAYMOND M
IPC: B23P15/00
Filed: 1990-09-25
Granted: 1992-08-18
Abstract: Form 24 ABSTRACT   A device and method are provided for permanently anchoring air turning vanes to manufactured vane rails or runners in ductwork systems and which incorporate pre-positioning, splitting and bending means into one continuous sequence when the device is applied to the exposed edge of an air turning vane which has been inserted into the slotted depression of manufactured vane rails or runners and is actuated by means of a hammer blow or similar energy source.
Patent CA-2039280-C (CA)
Title: Apparatus for controlling an electric motor
Inventor: LOMBARDI STEVEN A
IPC: H02P27/02
Filed: 1991-03-27
Granted: 2000-08-29
Abstract: A motor controller includes a set of thyristors which couple the motor to a source of alternating electricity. A detector senses when the voltage of the source makes a zero crossing. A mechanism is provided to vary the frequency of a clock signal at a rate determined by a user selectable input which represents the rate at which the motor speed is to change during starting or stopping. The clock signal is applied to a counter which produces an active trigger signal when a given number of clock signal cycles have been counted following a zero crossing of the source voltage. The active trigger signal causes a brief trigger pulse to be applied to gate electrodes of the thyristors. The varying frequency of the clock signal alters the relative times at which the thyristors are triggered to vary the amount of voltage applied to the motor. Different frequency variation functions can be stored in a memory for the starting and stopping modes.
Patent CA-2040914-C (CA)
Title: Treatment of erectile dysfunction
Inventor: PLACE VIRGIL A
IPC: A61K9/00
Filed: 1991-04-22
Granted: 2001-12-04
Abstract: Erectile dysfunction, particularly impotence, priapism and Peyronie's disease is treated by the transurethral administration of a therapeutically effective agent. The agents are administered to the urethra by means of a penile insert (1) having a rapidly releasing coating (4) containing the agent on its exterior surface or by means of an inserter (27) carrying an agent containing dose of agent (31) which can be displaced into the urethra.
Patent CA-2043842-C (CA)
Title: Doctor for a suction roll
Inventor: KIVIMAA JUHA
IPC: D21F3/10
Filed: 1991-06-04
Granted: 1995-06-13
Abstract: The invention concerns a method and a device for removing water out of the perforations in a suction roll wherein a doctor blade is brought into contact with the face of the suction roll.          The doctor blade is mounted with its slat face in such an angular position in relation to the face of the suction roll that the angle between the face plane of the doctor blade and the tangential direction of the face of the suction roll, when the tangent is drawn at the contact point between the tip of the doctor blade and the face of the suction roll, is from about 2° to about 10°.  In the method, water is removed by means of the inlet-side surface plane of the doctor blade, the inlet side being seen in the sense of rotation of the suction roll, and the water is allowed to flow smoothly  over  the  doctor  blade  out  of  contact  with  the construction.     According  to  the  invention,  water  may  be additionally removed by means of a suction effect out of the area between the slat face of the doctor blade and the suction roll, negative pressure being produced  in the space.   The negative pressure produces flow of water out of the perforations or grooves in the suction roll.
Patent CA-2047706-C (CA)
Title: Esters of carboxylic acids of medium chain-length as a component of the oil phase in invert drilling muds
Inventor: MUELLER HEINZ
IPC: C09K8/34
Filed: 1990-03-01
Granted: 2002-07-09
Abstract: The invention describes the use of selected esters, fluid at room temperature and with flash points above 80°C, from monocarboxylic acids of synthetic and/or natural origin with 6 to 11 carbon atoms and mono-and/or polyfunctional alcohols as the oil phase or a component of the oil phase of invert drilling mulls, which are suitable for environment-friendly development of petroleum and natural gas deposits and in a continuous oil phase contain a dispersed aqueous phase together with emulsifiers, weighting agents, fluid-loss additives and preferably further conventional additives. In a further embodiment the invention relates to invert-drilling fluids of the types mentioned, which ara characterized in that the oil phase contains esters of monocarboxylic acids of synthetic and/or natural origin with 6 to 11 carbon atoms and with mono- and/or polyfunctional alcohols preferably in admixture with other components from the class of ecologically acceptable compounds.
Patent CA-2047999-C (CA)
Title: Broadband electromagnetic field simulator
Inventor: PODGORSKI ANDREW S
IPC: G01R29/08
Filed: 1991-07-30
Granted: 2000-10-31
Abstract: A broadband electromagnetic field simulator having an open horn TEM (transverse electromagnetic) waveguide coupled to launch energy in a strip line formed between a forwardly extending plate section and a ground plane. The test volume is located outside the horn between the forwardly extending plate section and the ground plane. The plate section which functions as a radiating element initially extends parallel to the ground plane and then curves downwardly to terminate adjacent it. In an alternative embodiment the plate section extends upwardly, initially with an exponential configuration and then forwardly to terminate at a vertical, grounded wall faced with anechoic material. The horn contains a flat conductor plate positioned parallel to and spaced from the top edge defining an asymmetrical transmission line within the horn. This plate conductor is coupled to the forwardly extending plate section either directly or by means of a series RLC coupling network.
Patent CA-2051627-C (CA)
Title: Method and apparatus for processing nitrogen oxide gas
Inventor: SYOUZI FUKUZI
IPC: B01D53/34
Filed: 1990-05-31
Granted: 1994-06-21
Abstract: ABSTRACT OF THE DISCLOSURE           In  a  method  for  processing  nitrogen  oxide, nitrogen oxide is reacted with hydrogen azide.   Oxygen and/or  plasma  is  utilized  to  accelerate  the  reaction between nitrogen oxide and hydrogen azide.  An apparatus for use in performing the nitrogen oxide processing method includes a reaction casing in which an aqueous solution containing hydrogen azide is provided.  A nitrogen oxide containing gas is introduced into the reaction casing for reacting nitrogen oxide with hydrogen azide to reduce nitrogen oxide.  A plasma generating unit may be provided for feeding plasma into the nitrogen oxide containing gas.
Patent CA-2053699-C (CA)
Title: Curable fluorinated copolymer; process for preparing the same and use thereof in varnishes and paints
Inventor: KAPPLER PATRICK
IPC: C08F214/18
Filed: 1991-10-18
Granted: 1996-06-04
Abstract: Curable copolymer containing the residues from copolymerisation of a fluoro monomer and of an allyl compound, characterised in that: 
 
  a) the residues of fluoro monomer originate from the combination of tetrafluoroethylene and chlorotrifluoroethylene, 
  b) the residues of the allyl compound originate from an allyl polyol of formula: 
<IMAGE>
 R1 being H or CH2OH, R2 being OH or CH2OH, R3 being CH3 or OH, it being known that R1 and R3 cannot simultaneously be H and CH3 and in that it additionally contains 
  c) the residues from copolymerisation of a vinyl ether of formula: CH2=CH-O-R in which R is a linear or branched alkyl radical containing from 2 to 13 carbon atoms. 
 
<??>This curable copolymer is obtained by copolymerisation in solution in an organic solvent. In solution in a suitable solvent, this copolymer is employed in paints and varnishes.
Patent CA-2056202-C (CA)
Title: Air diverter for chaff removal in a combine
Inventor: KUCHAR GEORGE J
IPC: A01F12/44
Filed: 1991-11-26
Granted: 2002-04-30
Abstract: An air diverter positioned on an upper, forward portion of a sieve-like cleaning shoe in an agricultural combine directs a fan-generated air flow over the cleaning shoe to facilitate separation of chaff from grain which is directed onto and passes down through the cleaning shoe. A plurality of curved, spaced fins, or slats, receive the upward flow of air and deflect the air flow generally horizontally over the clean-ing shoe for directing the chaff toward the rear of the combine where it is discharged. The inter-fin spacing decreases from bottom to top of the air diverter so as to increase air flow velocity for more efficient and higher capacity chaff removal.
Patent CA-2057256-C (CA)
Title: Clutch assembly for a zoned live conveyor
Inventor: KUSCHEL DAVID
IPC: B65G47/26
Filed: 1991-12-09
Granted: 1995-02-21
Abstract: A clutch and declutch assembly is disclosed for live conveyors that is particularly suitable for conveyors having sections or zones.  The clutch assembly has a clutch biasing spring and nut assembly which causes inner and outer driven clutch members to frictionally engage the driving clutch member.  The clutch also has a torque limiting feature and a declutching feature.  Declutching is performed by expanding a bladder or a hydraulic cylinder, causing a clutch release plate to axially move the outer driven clutch member to disengage with the driving clutch member.  A zoned live conveyor is obtained by using at least one live roller, sensor and valve in each zone. When the presence of a load unit in a zone is sensed, a sensing signal is sent to a central control unit, which in turn operates a valve to expand a bladder or cylinder that axially move the clutch release plate to declutch the roller.  A variety of control logics can be programmed into the control unit and are easily changed.
Patent CA-2057746-C (CA)
Title: Preparation of n-(1-alkoxyalkyl) formamide and bis formamides
Inventor: LISTEMANN MARK LEO
IPC: C07C235/08
Filed: 1991-12-16
Granted: 1996-12-31
Abstract: This invention relates to an improved process for the formation of N-(1-alkoxyalkyl)amides with coproduction of alkylidene bisamides. The N-(1-alkoxyalkyl)formamides of this invention are prepared by reacting formamide with an acetal or hemiacetal carboxylate ester represented by the formulas:   I                      II               wherein R is C1-C8 alkyl, aralkyl or aryl; R1 and R2 are C1-C8 alkyl, or aryl; and R3 is secondary or tertiary alkyl having from 3-8 carbon atoms. The reaction is carried out in the presence of an acid catalyst such as a strong acid ion exchange resin.
Patent CA-2059514-C (CA)
Title: Mine roof support system
Inventor: LONG LAWRENCE E
IPC: E21D11/00
Filed: 1992-01-16
Granted: 1996-10-29
Abstract: A roof support system is disclosed having a first rod extending into a first bore in the roof of a mine, a second rod extending into a second bore into the roof of a mine, a connector having a first hole through which the free end of the first rod is inserted and a second hole through which the free end of the second rod is inserted such that the first rod is held in securing fashion within the connector, and a nut threadably engaged to the second rod at an end of the second rod which exits the second hole of the connector, the connector and the rods forming a roof support system.
Patent CA-2059724-C (CA)
Title: Agricultural insert
Inventor: ROWLETT DON C
IPC: A01B15/04
Filed: 1992-01-21
Granted: 1995-04-18
Abstract: An insert for use in an agricultural tool having a cutting edge for forming a furrow.  The insert includes an elongated wedge having a leading end, a trailing end, a top surface, a first side surface and a second opposing side surface coterminous therewith defining a longitudinally extending lowermost edge. The first and second side surface converge from the trailing end to the leading end and diverge from the lowermost edge to the top surface to form a v-shape leading end.  In a preferred embodiment the insert includes a means for aligning the lowermost edge of the insert with the cutting edge of the tool.
Patent CA-2065120-C (CA)
Title: Method and apparatus for manufacturing a non-woven fabric marked with a print
Inventor: BOULANGER ROGER
IPC: D04H1/49
Filed: 1992-04-03
Granted: 1997-08-05
Abstract: A method and apparatus for manufacturing a non-woven fabric printed with a decorative pattern.   A fibrous starting material whose individual fibers are capable of movement relatively to one another under the influence of applied fluid forces is subjected to a fluid stream for entangling the fibers to form a unitary fibrous network.          The unitary fibrous network is impregnated with liquid binder which solidifies and consolidates the non-woven fabric.   Before the binder has cured and is still in a liquid condition, the unitary fibrous network is printed with a decorative pattern.   Subsequently,  the unitary fibrous network is dried to simultaneously cure the binder and the colorant forming the decorative pattern.
Patent CA-2072165-C (CA)
Title: Process for preparing poly(arylene sulfide) polymers using waste material
Inventor: ASH CARLTON E
IPC: C08G75/02
Filed: 1992-06-23
Granted: 2000-09-19
Abstract: A process is provided for producing a poly(arylene sulfide) polymer which employs waste material comprising poly(arylene sulfide) polymer that is normally discarded or otherwise disposed of, wherein the waste stream is contacted with a polymerization reaction mixture under polymerization conditions. The waste material can optionally contain other components such as cyclic and linear oligomers, inorganic salts, polar organic compounds and water.
Patent CA-2080729-C (CA)
Title: Livestock feed
Inventor: WARD ROBERT
IPC: A23K10/24
Filed: 1992-10-16
Granted: 1998-05-19
Abstract: A livestock feed containing meat and bone, bloodmeal, soy hulls,  corn and about 20% by weight liquid animal  fat.   The invention further relates to a process for making a livestock feed including the steps of mixing together meat and bone, bloodmeal, soy hulls, corn and a first portion of liquid animal fat; extruding the mixture into pellets; and then spraying the extruded pellets with a second portion of liquid animal fat.  All of the fat used in the livestock feed and in the process for making the livestock feed is liquid animal fat.
Patent CA-2081943-C (CA)
Title: Cryogenic freezer apparatus and method
Inventor: APPOLONIA JACK
IPC: F25D29/00
Filed: 1992-11-02
Granted: 1997-05-27
Abstract: The  present  invention provides  a  cryogenic  freezer  and method  using  a  freezing  chamber  within which  articles  are cooled under the direct application of a cryogen, causing the cryogen  to  vaporize  into  a  cryogenic  vapor.   The  freezing chamber has inlet and outlet plenums through which articles to be  frozen  are  passed  into  and  from  the  freezing  chamber, respectively.  The liquid cryogen is introduced from a make-up tank into the freezing chamber and into direct contact with the articles to be frozen.  Conduits connect the inlet and outlet plenums to a blower that draws air from outside the freezing chamber  and  the  cryogenic  vapor  from  inside  the  freezing chamber to prevent air from entering the freezing chamber.  The cryogenic vapor is drawn from an outlet in the freezing chamber to a recovery unit to be compressed,  purified and liquefied. The resulting liquid cryogen is then fed back to the make-up tank.   In order to prevent  air  from being processed by the recovery unit  along with the cryogenic vapor,  the cryogenic vapor is drawn from the freezing chamber at a level thereof that is as low as possible and such that the mass flow rate of the cryogenic vapor drawn from the freezing chamber is equal to that of the liquid cryogen upon its entry into the freezing chamber.