baber/WOPTO huggingface dataset:
Patent CA-1141959-A (CA)
Inventor: SOFFER HILLEL
IPC: A01G31/00
Filed: 1980-11-07
Granted: 1983-03-01
Abstract: ABSTRACT           An improved unit for hydroponics.  The unit comprises a covered trough holding a nutrient solution with an air space above it, means for continuous injection of nutrient solution in atomised form into the air space, plant holders penetrating into the trough through the cover and adapted each to hold the lower stalk portion of a growing plant such that the lower stalk end is at or above the surface level of the nutrient solution while the roots depend into the solution, adjustable overflow means being provided for the continuous discharge of the solution from the trough.  There is also provided a hydroponics installation comprising at least one such unit. Furthermore, there are provided plant holders for use in the unit.
Patent CA-1178882-A (CA)
Inventor: PALMER GLENN R
IPC: E06B9/60
Filed: 1980-12-19
Granted: 1984-12-04
Abstract: ABSTRACT OF THE DISCLOSURE           The present invention relates to a damage-minimizing door comprising: a flexible curtain having a first upper end and a second lower end and side edges; and a curtain winding mechanism.  The first end of said curtain is secured to the curtain winding mechanism for moving the curtain upwards and downwards.  There are a pair of parallel spaced apart guide channel means in which the side edges of the curtain are movable, sealingly engageable therewith under at least atmospheric pressure and releasable therefrom at a predetermined impact force on said curtain.
Patent CA-1171680-A (CA)
Inventor: PRUNBAUER KURT
IPC: E05B47/00
Filed: 1981-02-09
Granted: 1984-07-31
Abstract: ABSTRACT OF THE DISCLOSURE         Closure device with a cylinder core turnable in a housing and a key insertable into a key channel, wherein the key is provided on two surfaces with ribs and/or recesses extending transversely to the direction of insertion, which ribs or recesses control blocking elements shiftable trans-versely to the direction of insertion of the key and which extend in the locking position into a recess of the housing and-in the unlocking position are arranged within the plane of separation between cylinder core and housing.
Patent CA-1130293-A (CA)
Inventor: GELBEIN ABRAHAM P
IPC: C07D213/82
Filed: 1981-04-16
Granted: 1982-08-24
Abstract: NICOTINAMIDE PRODUCTION          Abstract of the Disclosure In the hydrolysis of nicotinonitrile to nicotinamide, the hydrolysis effluent, containing nicotinamide, unconverted nicotinonitrile, ammonia and some ammonium nicotinate is stripped with gaseous ammonia to produce a molten nicotinamide bottoms, essentially free of nicotinonitrile, containing less than 10 wt% water, and an overhead containing water vapor, ammonia and nicotinonitrile.  An aqueous solution of ammonia and unreacted  nicotinonitrile is recovered from the overhead and recycled to the hydrolysis, with gaseous ammonia in the over-head being recycled to the stripping.
Patent CA-1173949-A (CA)
Inventor: KWOK SAI W
IPC: H04N7/10
Filed: 1981-04-23
Granted: 1984-09-04
Abstract: D-22,854 DIFFERENTIAL CURRENT DETECTOR IN             CABLE TELEVISION TRUNK AMPLIFIER STATION by Sai W. Kwok Abstract of Disclosure A voltage comparator compares the DC current in active elements of a trunk amplifier with a variable reference voltage for detecting when to switch to a bypass mode.  Its output is normally low for passing a current through it, an LED, and relay coils when the amplifier operates satisfactorily.  Circuitry for establishing an allowable amount of decrease in DC current in a current sensing resistor R5, prior to switching the comparator for de-energizing the relay coils, comprises a first transistor Q4 that continuously conducts collector current through a load resistor, a second transistor Q2 that is only responsive to a low output voltage of the comparator for passing a prescribed current through the load resistor for decreasing the first transistor Q4 collector voltage a prescribed amount, and circuitry in-cluding voltage dividers for coupling a greater percentage of the change in Q4 collector voltage to the positive input of the comparator than to the negative input thereof which also senses the level of the DC current.
Patent CA-1151977-A (CA)
Inventor: RUSEFF WALTER Z
IPC: F15B11/00
Filed: 1981-04-30
Granted: 1983-08-16
Abstract: Flow-Pressure Compensated Control for Variable Displacement Pumps Abstract A flow-pressure compensated or "load-plus" valve is oftentimes utilized in the servo-system for a variable displacement pump to maintain pump discharge pressure above a minimum pressure level and above a load pressure in a fluid actuator.  Valves of this type normally employ a spring interconnected between a modulating spool and a piston responsive to load pressure to modulate a control pressure, controlling the displacement of the pump.  Such valves thus provide a constant discharge pressure margin over load pressure while providing the pump's minimum stand-by pressure. An improved circuit has a load-plus valve with a spool movable between a first position communicating a control pressure from a pump to a control chamber and a second position at least partially venting the control chamber.  A piston is movable between a first position isolating the piston from the spool to enable the spool to move independently of the piston and a second position engaging and moving the spool to modulate the control pressure in response to variations in a load pressure in a fluid actuator.
Patent CA-1166635-A (CA)
Inventor: FISCHER WALTER
IPC: G03F7/031
Filed: 1981-05-04
Granted: 1984-05-01
Abstract: Abstract Novel thioxanthonecarboxylic acids and thioxan-thonecerboxylic acid derivatives of the formula I                          (I) in which Y is -COOH, -CO-halogen, -CN or a carboxylic acid ester, thioester or amide group and X, Z and W are as defined in the patent claim, are described,    The com-pounds of the formula I in which Y is other than -CO-halogen are suitable as sensitisers for photo-crosslinkable polymers or as initiators for photo-polymerisation of ethylerically unsaturated compounds or for photo-chemical crosslinking of polyoleilns,    The acid halides of the formula I are starting materials for the preparation of the corresponding nitriles and carboxylic acid esters, thioesters and amides.
Patent CA-1134619-A (CA)
Inventor: LAKE CHARLES W
IPC: B24C3/00
Filed: 1981-06-12
Granted: 1982-11-02
Abstract: "Surface cleaning machine"                      Abstract A surface cleaning machine, of the kind in which abrasive grit is projected at high velocity against a surface to be cleaned.  The machine has an upper hopper to receive grit carried by rebound and air flow from the zone being cleaned.   Adjustable openings provide for controllable air exhaust upstream of the upper hopper which has a controllable outlet through which grit falls in the form of a curtain into a main, lower hopper.   Air is drawn into the main hopper through a controllable inlet and flows through the curtain to remove dirt from the falling grit.  The angle of the blast wheel can be varied, to vary the angle of impact of the projected grit on the surface in the cleaning zone.
Patent CA-1189698-A (CA)
Inventor: FUZII KOICHIRO
IPC: F27D3/14
Filed: 1981-07-03
Granted: 1985-07-02
Abstract: ABSTRACT OF THE DISCLOSURE:         A method for preventing the inclusion of slag into the molten steel tapped from a tap hole of a converter comprising the following steps:  pivotally suspending an elongated stopper as a pendulum from a supporting arm, immersing said stopper in the molten steel in said converter, lowering said stopper temporarily to close said tap hole when the depth of said molten steel has reached a predetermined level, lifting said stopper to a predetermined height above the inside opening of said tap hole in said converter, maintaining said stopper at said predetermined height above the inside opening of said tap hole irrespective of the tilting of said converter to thereby maintain a predetermined space between said stopper and the inside opening of said tap hole, flowing a constant flow-out of said molten steel into said tap hole through said predetermined space, preventing whirling of slag into the molten steel flow by maintaining said predetermined space, and lowering said stopper when the molten slag is about to flow out through said tap hole upon completion of the tapping of the molten steel to prevent said molten slag from flowing out of said tap hole.  And an apparatus to carry out this method.
Patent CA-1165869-A (CA)
Inventor: RANALLI CHARLES
IPC: G06F3/06
Filed: 1981-07-07
Granted: 1984-04-17
Abstract: METHOD AND APPARATUS FOR FORMATTING A MEMORY DISK                  ABSTRACT           A method and apparatus for formatting a memory disk (10).  Information is stored in compressed form in memory (32).  Each sequentially different byte of infor-mation is accompanied by a numerical variable defining the number of times the byte is to be written on the disk (10). The numerical variable is loaded into a con-trol counter (40) which is decremented every time the byte is written,  The same byte is fetched from the memory (32) until the control counter (40) reaches zero.
Patent CA-1174538-A (CA)
Inventor: LOEWRIGKEIT PETER
IPC: B32B27/08
Filed: 1981-07-31
Granted: 1984-09-18
Abstract: ABSTRACT OF THE DISCLOSURE          A polyurethane coated polyvinyl chloride or co-polymer which resists discoloration is provided by coating the substrate surface with an aqueous dispersed polyurethane treated with a mono-acid halide, mono-acid anhydride, carbethoxy cyclic imide or monoisocyanate. The coated composite even when subjected to temperatures in excess of 100 degress C for extended periods resists discoloration and remains thermo-color stable with ex-tended use.
Patent CA-1180390-A (CA)
Inventor: KREUTEL RANDALL W JR
IPC: H04J1/08
Filed: 1981-08-24
Granted: 1985-01-02
Abstract: HIGH POWER MULTIPLEXER FOR DUAL POLARIZED      FREQUENCY REUSE EARTH STATIONS                ABSTRACT OF THE DISCLOSURE A modular arrangement of directional RF filters provides frequency multiplexing of signal sources at earth stations which are transmitting on two ortho-gonal polarizations.  Each of the modules consist of a pair of 3dB hybrid couplers  coupled to each other through identical bandpass filters such that a signal applied to one of two input ports is outputed exclu-sively through an associated one of two output ports. The passbands  of each of the modules are mutually exclusive.   The  output  ports  of  each  module  are coupled to an output port of two adjacent modules, and two main outputs are taken from the two outer modules. The signals from the two main outputs are applied to two antennas having mutually orthogonal polarizations. The present invention may also be used as a demulti-plexing receiver.
Patent CA-1166820-A (CA)
Inventor: MAURER ALEXANDER
IPC: C01B25/41
Filed: 1981-09-10
Granted: 1984-05-08
Abstract: PRODUCTION OF GRANULAR ALKALI METAL DIPHOSPHATES                 OR TRIPHOSPHATES     ABSTRACT OF THE DISCLOSURE     The invention relates to a process for making granu-lated, partially or completely hydrated alkali metal di-phosphates or triphosphates. To this end, the invention provides for alkali metal diphosphates or triphosphates which consist  to an extent of at least 20 % of partic-les with a size of less than 0.045 mm and are hydrated to an extent of less than 90 %, based on the phosphates' theoretical content of water of hydration, to be inten-sively mixed and granulated in the presence of water and an ammonium polyphosphate, 50 weight %, based on the quantity of water used.
Patent CA-1151964-A (CA)
Inventor: BARTH JAMES T
IPC: F23N3/00
Filed: 1981-09-11
Granted: 1983-08-16
Abstract: Abstract of the Disclosure A thermally controlled damper construction for a gas fired combustion apparatus such as a furnace or the like is described.          A damper is pivotally mounted within the stack or flue of the combustion apparatus for pivotal movement from a closed position, wherein the damper is located at an acute angle with respect to the axis of the stack, to a full open position.  One edge of the damper is recessed to provide a vent opening between the damper and the stack to permit the venting of gases generated by opera-tion of the pilot light during periods when the furnace is not operating.  The damper is pivotally moved between its closed and open positions by a bi-metallic thermally responsive element which is located upstream of the damper and which is connected to the damper by means of a linkage.  The linkage includes means for permitting the unrestrained rotational movement of the bi-metallic element after the damper is in its position thereby preventing stressing of the thermally responsive element at high temperatures.          An opening is formed in the stack upstream of the damper and substantially immediately below the recessed portion.  A tempera-ture responsive safety switch is positioned at the outside surface of the stack outwardly of the opening formed therein and is oper-ably connected to the gas supply of the furnace.  In the event the damper does not open when the furnace is operated or an improper draft is present, the products of combustion spill out-wardly through the stack opening onto the temperature responsive safety switch thereby activating the same to terminate the gas supply to the furnace.
Patent CA-1144255-A (CA)
Title: Dielectric separation of incoming and outgoing  terminations in a cable termination block
Inventor: JOHNSTON HAROLD
IPC: H01R9/15
Filed: 1981-09-15
Granted: 1983-04-05
Abstract: DIELECTRIC SEPARATION OF INCOMING AND OUTGOING TERMINATIONS      IN A CABLE TERMINATION BLOCK          Abstract of the Disclosure A cable termination block has terminals arranged in rows across the block, each terminal having a pin portion extending up from the top surface of the block and a socket portion in the bottom of the block.  Incoming and outgoing cable conductors are attached to the pin portions, protectors plugging into the socket portions.  The cable conductors are connected to alternating rows, i.e. incoming conductors to one row and outgoing conductors to the next row, and so on across the block.  A dielectric member is positioned between adjacent rows of incoming and outgoing conductors.          In one arrangement incoming conductors are attached to rows of long pins, outgoing conductors attached to rows of short pins.  A dielectric member fits over the long pins and rests on the short pins.  In another arrangement walls extend up from the block to separate adjacent rows of terminals.  The walls may be inclined across the block to form tapered channels.
Patent CA-1176731-A (CA)
Inventor: HARVEY RAYMOND G A
IPC: F16K31/04
Filed: 1981-10-22
Granted: 1984-10-23
Abstract: ABSTRACT        A motor operated valve, typically a butterfly valve driven by a synchronous electric motor (16), is provided with a torque sensing arrange-ment wherein an cyclic electrical signal representative of the rotational speed of the motor is produced by magnets (22) on disc driven by the motor and Hall effect switches (23,24).  The frequency of this signal is compared in a circuit (43) with the frequency of current supplied to the motor to provide an indication of motor torque.  Switches (46,47) define preset torque limits for the valve.  If the limits are exceeded, a signal is fed to control logic (41) which operates switches (18) to control the supply current to the motor.  The speed signal from the Hall effect switches is also fed to a counter (31) to develop a counter representative of movement of the valve. The output of counter (31) is compared with preset valves defined by switch circuits (37,38) to define limits of travel for the valve.
Patent CA-1190417-A (CA)
Inventor: BOSTROEM OLLE
IPC: B22F1/00
Filed: 1981-12-18
Granted: 1985-07-16
Abstract: ABSTRACT OF THE DISCLOSURE      A suction-sintering charge of high permeability and stable structure is produced on a mobile suction-sintering grate or in a stationary or mobile suction-sintering pan by compacting a moist material mixture (18) to be sintered to form a coherent cake (19), held together mainly by capillary forces, which cake is then broken into pieces having a size suitable to form a suction-sinter charge (14).  The water content of the material mixture (18) is adjusted so that substantially the minimum of fuel is consumed at the intended sintering temperature, and the compaction pressure is so adapted relative to the selected water content, corresponding substantially to the minimum fuel consumption, that the pore volume of the resultant cake (19) is not totally filled by the amount of water present in said mixture.
Patent CA-1178644-A (CA)
Inventor: KISLER SEMYON
IPC: H01T19/00
Filed: 1982-01-04
Granted: 1984-11-27
Abstract: ABSTRACT        The maximum subcorona potential level to which a particular conductive bristle brush is able to regu1ate an electrostatic charge on charge-retaining material is sub-stantially increased by limiting the electrical current available to said particular conductive bristle brush from a potential source coupled to said brush to a level that is less than a magnitude necessary for corona generation.
Patent CA-1173679-A (CA)
Inventor: LEE MICHAEL G
IPC: G11B31/00
Filed: 1982-01-13
Granted: 1984-09-04
Abstract: CONTROL SYSTEM FOR AUDIO-VISUAL PROJECTOR Abstract A system for the control and synchronization of mag-netic tape and filmstrip in an audio-visual projector.  Film is advanced by means of recorded advance tones on the magnetic tape which are detected by a tone detector to generate an advance pulse.  An advance counter is incremented responsive to each advance pulse and decremented as the film advances each frame. The output of the advance counter actuates a film-advance mech-anism unless the contents of the counter are zero, so that syn-chronization is maintained even if the rate at which the advance pulses occur exceeds the operating speed of the film-advance mechanism.  Means are provided to automatically synchronize the tape and film at predetermined locations by optically sensing markers affixed to the tape and film.  The system may also advance the tape independently of the film in either a fast-forward or a regular-speed mode or it may advance the film independently of the tape.
Patent CA-1206279-A (CA)
Title: Procede pour la clarification des boissons
Inventor: DUMONT YVES
IPC: A23L2/82
Filed: 1982-03-26
Granted: 1986-06-17
Abstract: Il s'agit d'un procédé pour la clarification en continu de jus de fruits autres que les jus d'agrumes en vue de maintenir dans ces jus une partie de leurs pectines comportant les étapes suivantes: la formation ou la reformation rapide d'un floc apte à la flottation dans le jus de fruits à traiter; l'introduction, en continu, du jus de fruits coagulé dans un bassin de flottation concurremment à l'introduction d'un gaz neutre dans le jus de fruits coagulé sous forme de micro-bulles pouvant se fixer sur le floc permettant ainsi aux particules de floc de se regrouper en surface; et l'enlèvement en continu des particules regroupées en surface et la récupération, en continu, du jus de fruits clarifié.
Patent CA-1171828-A (CA)
Inventor: MICHA PETER
IPC: F21V29/56
Filed: 1982-04-08
Granted: 1984-07-31
Abstract: ABSTRACT OF THE DISCLOSURE       A water submersible light fixture for water fountains and the like comprises a light housing with concave light reflective surface, a light bulb positioned in the space defined by the concave light reflective surface and light bulb socket secured to a support which is sealingly engaged with the housing.  The housing is submersed to cool and maintain the concave light reflective surface as exposed to the high temperatures produced by the light bulb.  The positioning of the light bulb is predetermined by its length to locate the bulb relative to the reflective surface to provide the desired degree of light focus.
Patent CA-1187829-A (CA)
Inventor: LUARTES CLETO R
IPC: B41J19/32
Filed: 1982-04-08
Granted: 1985-05-28
Abstract: ABSTRACT OF THE DISCLOSURE         An improved dry lettering printing machine of the type having a printing station, a rotatable disc or type font having embossed characters on the disc and a means for causing the machine to execute a print cycle which includes providing a color carrying ribbon and image carrying tape at the print station, precisely aligning a selected raised character on the disc for printing, exerting a printing force at the printing station, and reciprocating the tape cartridge to advance the tape and ribbon to print the next character at the printing station.  The improvement includes an input keyboard for typing the information which is to appear on the tape interfaced with the printing machine with a programmed microcomputer which stores the input data and, with control signals, sequentially causes the printing machine to print a tape according to the information typed on the keyboard.  The improvement further includes a means for electromechanically rotating the disc or type font in either a clockwise or counterclockwise direction, whichever is shorter, to position the next character for printing which enhances the speed and automatic operation of the improved machine.  A number of function keys and indicators are also provided on the keyboard to further enhance the speed and ease of operation of the printing machine.
Patent CA-1197914-A (CA)
Inventor: SAUL BEN
IPC: G08B17/00
Filed: 1982-04-15
Granted: 1985-12-10
Abstract: FIRE ALARM CONTROL SYSTEM     ABSTRACT OF THE DISCLOSURE     A fire alarm control system comprising an electronic switch circuit responsive to an increase input current signal generated by one or more fire detection devices.  A local alarm is connected to the electronic switch circuit to indicate an alarm state.  A delay timer circuit is connected to the electronic switch circuit and operated thereby to activate a remote alarm after a predetermined time delay.  A manual two-position switch is movable to a silence position from its normal position within the time delay to disable the local and remote alarms and movable back to its normal position to cut off power to the detection devices and electronic switch means to unlatch the alarms.  A further pair of manually oper-able switches are provided to instantaneously reactivate the disabled local and remote alarms when the two-position switch is in the normal position.
Patent CA-1210238-A (CA)
Inventor: GRITSUK LEV D
IPC: F27B1/24
Filed: 1982-04-26
Granted: 1986-08-26
Abstract: FURNACE WALL COOLING ARRANGEMENT                            ABSTRACT       A furnace wall cooling arrangement comprises banks of cooled pipes with refractory inserts interposed therebetween.          These banks are arranged over the periphery of the furnace wall and attached to the furnace shell. Each bank is divided along its vertical extent into sections, each including the cooling pipes welded to a metal sheet divided into separate parts with-in this section.
Patent CA-1193751-A (CA)
Inventor: BRENDLER JOACHIM
IPC: H05G1/70
Filed: 1982-06-03
Granted: 1985-09-17
Abstract: ABSTRACT:         The method of operating an X-ray generator in accordance with the invention involves the storage of a plurality of stand-by filament current values for differ-ent X-ray tube filaments.  Before an exposure using the selected X-ray tube or the corresponding filament, by value stored is addressed and adjusted as a stand-by filament current.  Consequently, by a suitable selection of the stand-by filament current values, the period of time required for the heating of its filament to the ultimate temperature can be reduced.  The preparation time can thus be substantially reduced.