baber/WOPTO huggingface dataset:
Patent CA-1125397-A (CA)
Inventor: LOVING ROBERT O JR
IPC: H03H9/56
Filed: 1979-08-29
Granted: 1982-06-08
Abstract: Abstract A monolithic crystal filter includes a monolithic crystal filter element, a capacitive network connected in series with the monolithic crystal filter element and a bridging capacitor connected across the monolithic crystal element and the capacitive network.  The monolithlc crystal filter provides a passband that is symmetrically located about the passband center frequency.  The monolithic crystal filter element has two pairs of electrodes that resonate at substantially the same frequency.  The resonating frequen-cies of the electrode pairs are preferably below the passband center frequency.  The capacitive circuit raises the resonating frequency of one of the electrode pairs such that the geometric mean of the raised and non-raised electrode-pair frequencies is substantially the same as the passband center frequency.  The monolithic crystal filter can be cascaded with one or more similar monolithic crystal filters or monolithic crystal filter elements to obtain greater selectivity.
Patent CA-1134669-A (CA)
Inventor: CHALLEN IAN A
IPC: A23L29/256
Filed: 1979-09-07
Granted: 1982-11-02
Abstract: ABSTRACT OF THE DISCLOSURE:             Readily rehydratable dehydrated edible products are obtained by drying compositions comprising finely divided foodstuff dispersed in edible gel substantially free of ??ration and having a gel strength corresponding to yield stress of 200 grams of a cylinder of gel having 12 mm diameter and 12 mm height compressed at 5 cm/minute between pressure plates; the gels are produced for example by mixing solid calcium sulphate particles rapidly throughout gellable aqueous alginate or low-methoxy pectate sols and then allowing solid calcium sulphate to dissolve and the mixtures to gel under shear-free conditions.
Patent CA-1140487-A (CA)
Inventor: POWELL RALPH E
IPC: F16D65/14
Filed: 1979-10-17
Granted: 1983-02-01
Abstract: ABSTRACT OF THE DISCLOSURE         This invention relates to a brake assembly having a brake housing and wheel shaft rotatable in the housing.  There is provided an armature plate in the housing secured to and rotatable with the shaft.  Also provided is a movable actuator in the housing movable rotatably from an inoperative position to an operative position closer to the armature plate.  An electromagnet is provided either directly mounted to the movable actuator or indirectly via a mechanical linkage.  When the electromagnet is energised it causes the actuator to rotate with the armature plate and thereby move to an operative position where is forces a stationary brake disc and rotatable brake disc into engagement to achieve a braking action.  This engagement is released upon de-energisation of the electromagnet.
Patent CA-1112618-A (CA)
Inventor: GRIMMINGER ALBERT
IPC: C10J3/02
Filed: 1979-12-05
Granted: 1981-11-17
Abstract: ABSTRACT OF THE DISCLOSURE       Apparatus for charging solids into a pressurized container having a tubular lock chamber thereon. The apparatus comprises a feed device for supplying solids to the inlet of the lock chamber and a housing mounted adjacent the lock chamber for movement towards and away therefrom; a displacer member is slidably mounted in in housing in axial alignment with the inlet of the lock chamber; a first seal is provided in the housing for sealingly engaging the displacer member, and a second seal is provided on one of  the opposed surfaces of thee lock chamber and housing.  The first seal is axially located along the displacer member at a distance from the end of the housing which exceeds the stroke of the displacer member in its travel between its extended and retracted positions whereby the portion of the displacer  member which penetrates into the lock chamber will not come into contact with the first seal.
Patent CA-1133038-A (CA)
Inventor: KOESTER GEORGE S
IPC: B62D53/08
Filed: 1980-02-25
Granted: 1982-10-05
Abstract: LUBRICATION RETAINING BEARING    ABSTRACT This invention relates to lubrication retaining bearings. As is well known in the art, the interface between heavy load bearing surfaces of two relatively movable parts is subject to considerable wear, and when either of the parts has become too worn, it must be replaced at great expense.  Moreover, when insuf-ficient lubricant is provided, the two parts occasionally lock together and interfere with the normal safe operation of the apparatus.  The present invention provides a convenient and effective device for retaining a lubricant between relatively movable parts, which device Is relatively inexpensive to manufacture and easy to use.  In accordance with the invention, there is pro-vided an improved lubrication retaining shim bearing arranged to be inserted between the two parts.  The bearing includes an upper shim for engaging one of the parts, a lower shim for engaging the other part, and a middle shim having a plurality of apertures therethrough. A lubricant is retained between the upper and lower shims, and between the shims and their respective parts.  In an alternative embodiment, the upper and lower shims are fixed with respect to the parts, and the lubricant is confined between the upper and lower shims.
Patent CA-1134039-A (CA)
Inventor: AEMMER PETER F
IPC: D06H3/00
Filed: 1980-02-26
Granted: 1982-10-19
Abstract: ABSTRACT     A method of cleaning yarns and evaluating yarn defects by means of digital technology is based on the fact that the physiological perception arising from observation of yarn defects, both cross-section as well as in length, is approximately proportional to the logarithm of the physical expansion of such yarn defects, and also of the fact that yarn defects are statistically rare events.     Signals corresponding to the yarn cross section or diameter are represented and processed in the logarithmic measure.  The signal analysis and the signal processing complexity required by this is constantly adapted to the present signal course and the physiologically based exactitude requirements. For this purpose, a tolerance range and a system of tolerance zones arranged in both the transverse dimension and the longitudinal dimension is defined about the yarn.  Different analysis criteria are applicable for those zones.  Such criteria is only analysed after the signal has directly exceeded or fallen short of at least one of the zone limits.  The resulting need for signal processing capacity is distinguished by its short-lasting requirement peaks, which are small for most of the time.       By subdividing the method into a rigidly clocked data scanning process and into at least one signal processing process decoupled from this temporarily by a data buffer action, the requirement peaks are processed by one or more processors whose average processing capacity is considerably smaller than the peak requirement.  This statistical load balance becomes even more favourable when similar partial process from several (statistically independent) channels by using a common processor.
Patent CA-1133076-A (CA)
Inventor: NAKAMURA KIYOSHI
IPC: H02P25/064
Filed: 1980-03-25
Granted: 1982-10-05
Abstract: A feeding system for a linear motor transportation system in which a number of discrete drive coil units or linear motor units are arranged along a track to generate a moving magnetic field for driving trains is disclosed.  In the present feeding system, a number of feeding sections extend contiguously along the track and each of the feeding sections includes at least one power converter.  Each feeding section is divided into at least two linear motor blocks each having feeder means.  The linear motor units in each of the linear motor blocks are connected through associated ones of first switch means to the associated feeder means which is connected to the power converter of the associated feeding section through associated ones of second switch means. Preferably, those adjacent two feeder means which belong to adjacent different feeding sections respectively are coupled together through third switch means. Preferably, the second switch means are correspondingly connected to the power converters through fourth switch means. Preferably, in each of the feeding sections, dynamic brake means is coupled to the junction of the second switch means and the feeder means or the junction of the second and fourth switch means through fifth switch means.
Patent CA-1157060-A (CA)
Inventor: BITTNER JOHN R
IPC: B65H45/00
Filed: 1980-05-09
Granted: 1983-11-15
Abstract: CONTINUOUS FORMS REFOLDER FOR HIGH SPEED PRINTERS              ABSTRACT OF THE DISCLOSURE Refolder for a fan-folded web which automatically adjusts the height of the area in which refolding takes place to accommodate different speeds of movement and volume of fan-folded paper.
Patent CA-1119144-A (CA)
Inventor: ZAVISLAKE JIM
IPC: B25B33/00
Filed: 1980-07-28
Granted: 1982-03-02
Abstract: "ARTICLE HOLDER" ABSTRACT OF THE DISCLOSURE          A wire holder for detachably securing an article such as a key for a power drill chuck, to the flexible cord extending from the corresponding power drill, includes a resilient one-piece length of wire with a partial loop formed intermediate the ends thereof and having a pair of legs extending one from each end of the said loop.  Pre-formed indentations are provided at the inner ends of the legs so that when the legs are crossed over one another, the indentations interlock to hold the loop closed around the shaft of the key or article. The distal ends of the legs are partially turned and engage the flexible power cord whereupon they may be closed by pliers or the like to secure same to the cord.
Patent CA-1153123-A (CA)
Inventor: PORCELLA BREWSTER J
IPC: G06F13/00
Filed: 1980-08-27
Granted: 1983-08-30
Abstract: INTEGRATED FLOATING POINT PROCESSOR AND CENTRAL MICROPROCESSOR ABSTRACT OF THE DISCLOSURE    There is described a new and unique apparatus for performing floating point processor (FPP) operations in conjunction with a central processor unit (CPU).  The new apparatus and method permits micro-level interfacing of the FPP with the CPU or other similar components.  The new apparatus allows most FPP computations to be accomplished substantially in parallel with and independent of other CPU operations whereby the FPP is not limitative of the system operating speed.  The invention utilizes simplified FPP hardware interconnected at a lower level in the architectural scheme of a CPU so that the CPU performs many of the control functions related to the FPP operations.
Patent CA-1146873-A (CA)
Inventor: BLANTON WILLIAM A JR
IPC: B01D53/04
Filed: 1980-08-28
Granted: 1983-05-24
Abstract: ABSTRACT OF THE DISCLOSURE A process is provided for adsorbing sulfur dioxide impurity from an impure gas and producing a hydrogen sulfide-rich gas.  In the process, a first adsorbate containing oxidized sulfur is produced by contacting the im-pure gas with an adsorbent comprising a composite of an alumina support and sodium and vanadium oxides.  A second adsorbate obtaining reduced sulfur is produced by contacting said first adsorbate with carbon monoxide.  A gas rich in hydrogen sulfide is then produced by contacting said second adsorb-ate with water vapor at a temperature in the range 120°C to 815°C.
Patent CA-1121817-A (CA)
Inventor: CRENSHAW RONNIE R
IPC: C07D403/00
Filed: 1980-11-20
Granted: 1982-04-13
Abstract: 111.  Abstract Novel cyanocarboxamidines and a method for their preparation are disclosed.  The use of these new cyanocarboxamidines as inter-mediates in the one step synthesis of antihypertensive 4-amino-2-(4-substituted-piperazine-1-yl)-quinazolines is also disclosed.
Patent CA-1106252-A (CA)
Title: Solar energy collector module
Inventor: BARBER EVERETT M JR
IPC: F24J2/46
Filed: 1980-11-26
Granted: 1981-08-04
Abstract: ABSTRACT     A solar energy collector housing capable of being quickly and easily assembled and installed comprises a pan with side and end walls, and an open-bottomed frame supported on the pan, the frame being formed by wall sections having portions depending into the pan, outward extending portions supporting the sections on the pan and carrying flashing reglets by means of which the housing may be flashed to adja-cent housing, inwardly extending ledges supporting a trans-parent cover within the frame, and upwardly opening channels receiving screws holding caps in place over the channels which caps also retain the transparent cover in place on the ledges.
Patent CA-1133258-A (CA)
Title: Chemical concentration control system for fluid  circulators
Inventor: ALANDT GEORGE A
IPC: B01J4/00
Filed: 1980-12-03
Granted: 1982-10-12
Abstract: ABSTRACT OF THE DISCLOSURE         In a chemical solution circulator including a tank, a pump with an intake pipe connected to the tank and a discharge pipe for delivering solution to an enclosure communicating with the tank, and a chemical concentration control system for the automatic addition of liquid chemicals for maintaining a pre-determined concentration thereof within the tank comprising a diverter and a chemical additive pipe connected to the discharge pipe for continuously sampling the solution in the discharge pipe, independent of the main flow of the solution and the dis-charging into the tank.  An aspirator is connected into the diverter pipe and has a low pressure additive intake pipe con-nected to a chemical solution storage tank.  A normally closed solenoid valve is interposed in the additive intake pipe.  An electronic controller is connected to the valve.  A flow-through conductivity cell is interposed within the diverter pipe up-stream of the aspirator for signaling the controller at a set value maintaining the valve closed.  A predetermined reduction of chemical concentration in the solution interrupting the sig-nal of the conductivity cell, the controller automatically energizing and opening the solenoid control valve.
Patent CA-1139728-A (CA)
Inventor: MILLER PAUL W
IPC: B21C1/14
Filed: 1980-12-17
Granted: 1983-01-18
Abstract: GRIPPER MECHANISM FOR TENSION REEL MANDREL AND THE LIKE                 ABSTRACT OF THE DISCLOSURE           A reel with an expandable mandrel support device for coiling material such as flat rolled steel strip or strips,  the reel mandrel having a gripper mechanism for effectively securing each leading end to the reel mandrel which mechanism has numerous cam action gripper bars that singularly can increase gripping force as the tension in the strip strands clamped by one or more cams is developed by the reel; a positioning wedge assembly for these gripper bars constructed to first position and hold immovable, in an operative position, except for movement due to tension buildup, and secondly to positively and quickly release all gripper bars from the strand ends and hence from the reel mandrel when the coils formed by the reel mandrel are to be removed.
Patent CA-1164612-A (CA)
Inventor: BRAGA RENATO
IPC: A46B5/00
Filed: 1981-02-23
Granted: 1984-04-03
Abstract: ABSTRACT OF THE DISCLOSURE            A silver-coated tooth brush comprises a brush head and a handle, which may be integral or fixed together by a demountable connection.  At least the bristle-supporting portion of the brush head carries a coating of silver.
Patent CA-1119944-A (CA)
Inventor: MAKSIM JOHN JR
Filed: 1981-02-25
Granted: 1982-03-16
Abstract: Abstract of the Disclosure A burner for soaking pit furnaces produces essentially complete combustion of the gas and air mixed in the burner.  The burner includes a tubular inner wall structure and an outer housing spaced from the inner wall to form a hollow interior between the inner wall and the housing.  The inner wall terminates adjacent a surrounding portion of the housing to form a narrow opening from the hollow interior which extends around the periphery of the inner wall structure  A gas supply pipe located in the hollow interior surrounds the inner wall structure and directs the flow of gas under pressure toward the narrow peripheral opening. In one embodiment, the inner wall forms an air supply pipe and air is forced under pressure through the air supply pipe and past the narrow opening.  Gas flowing through the narrow opening surrounds and is drawn into air flowing past the opening to form a combustible gas/air mixture.  In another embodiment, air under pressure is introduced to the hollow interior where it mixes completely with the gas to form a combustible gas/air mixture which is forced under pressure through the narrow opening.  In both instances, a clean-burning, continuous blue flame is produced in the soaking pit.  The invention also includes soaking pits for heating ingots and including such burners and methods of supplying heat to such soaking pit furnaces.
Patent CA-1165013-A (CA)
Inventor: BYATT STEPHEN W
IPC: H01L21/329
Filed: 1981-02-26
Granted: 1984-04-03
Abstract: ABSTRACT:         The surface termination of a p-n junction of a semiconductor device is passivated with semi-insulating material which is deposited on a thin layer of insulating material formed at the bared semiconductor surface by a chemical conversion treatment at a temperature above room temperature.  The layer may be formed by oxidising the semiconductor material of the body for example in dry oxy-gen between 300°C and 500°C or in an oxidising liquid con-taining for example hydrogen peroxide or nitric acid at for example 80°C.  The layer is sufficiently thin to permit conduction (e.g. by tunnelling) between the semi-insulating material and the surface but thick enough to reduce said This increases the spread of the junction depletion layer along the surface thereby permitting a high breakdown volt-age even with a high resisitivity for the material.  The thin layer can also act as a barrier against gettering of lifetime-killers (e.g. gold) from the semiconductors body by the semi-insulating material.  The semi-insulating material may be based on amorphous or polycrystalline sili-con or a chalcogenide.
Patent CA-1174866-A (CA)
Inventor: KIS-TAMAS ATTILA
IPC: C07C255/41
Filed: 1981-02-27
Granted: 1984-09-25
Abstract: ABSTRACT OF THE DISCLOSURE         A pneumatic, piston/cylinder couterbalance in which the counterbalance force is obtained by differential pressure across the piston and in which the force changes due to temp-erature are compensated by use of a variable volume cylinder having one or more auxiliary chambers separated by walls, each including a temperature responsive by-metal disc valve normally acting as a check valve permitting flow into the auxiliary chambers but preventing flow out of the chambers except when tho temperature drops to a predetermined value. In the multiple auxilary chamber embodiment, flow into and out from each chamber is controlled by an associated bi-metal disc valve responsive to successively lower temperatures to enable a more linear stabilization of force output regardless of temperature.
Patent CA-1135948-A (CA)
Inventor: ARMBRUST WILLIAM D
IPC: B23B27/14
Filed: 1981-03-19
Granted: 1982-11-23
Abstract: TITLE OF THE INVENTION AN INDEXABLE CUTTING INSERT          ABSTRACT OF THE DISCLOSURE This invention relates to an indexable broadnosing cutting insert for use in boring and broadnosing applications, especially where a floating type of boring head is required. This insert, preferably, has a triangular-like shape. Each side of this triangular-like shape actually being made of three angularly related faces: a forward lead clearance face, a middle clearance face and rear relief face. The forward lead clearance face and the middle clearance face are joined to the top face of the insert by a narrow, vertical wiper face.
Patent CA-1150566-A (CA)
Inventor: BETTS ROBERT E
IPC: F42C15/188
Filed: 1981-03-30
Granted: 1983-07-26
Abstract: ABSTRACT OF THE DISCLOSURE       An electro explosive device and percussion safe and arm device in which a piston actuated squib or a directional shaped charge is used to set off a pyrotechnic booster charge that is rotated relative to the squib to align the booster charge with the squib and thereby enable the squib to set the booster charge off. The booster charge is used to ignite an initiator main charge or an additional booster charge that then sets off an initiator main charge.
Patent CA-1180073-A (CA)
Inventor: GIBBS RICHARD D
IPC: H01F27/32
Filed: 1981-05-05
Granted: 1984-12-27
Abstract: 48,334 ABSTRACT OF THE DISCLOSURE Vapor cooled induction apparatus having a wind-ing with predetermined surface irregularities on the turn surfaces  of  the winding to provide spaces  to permit a cooling/insulating vaporizable liquid dielectric to flow between the turn surfaces of the winding to enable a film of the insulating cooling dielectric to be deposited on the surface area of the winding.  The surface irregularities may be transverse grooves disposed at predetermined inter-vals  in  at  least one surface of an elongated metallic conductor used to form the winding or they may be bosses of insulation disposed on a predetermined spacing on at least  one  surface  of the elongated metallic conductor. Also  disclosed  are  a method  and  apparatus  for forming precisely spaced grooves in the surface of a continuously moving elongated conductor and thereafter insulating the grooved  conductor  with  a  uniform,  solid,  homogeneous coating of electrical insulation.
Patent CA-1166022-A (CA)
Title: Recovery of zinc from zinc containing sulphidic  material
Inventor: WEIR DONALD R
IPC: C22B19/00
Filed: 1981-05-22
Granted: 1984-04-24
Abstract: ABSTRACT  OF  THE  DISCLOSURE             A process for recovering zinc from zinc-containing sulphidic material which also contains iron and lead and/or silver includes leaching the material under oxidizing con-ditions at a temperature in the range of from about 130 to about 155°C in aqueous sulphuric acid solution with a stoichiometric excess of sulphuric acid relative to the zinc content of the material of from about 50 to about 100% to produce an undissolved residue containing a major proportion of the lead and/or silver and a leach solution containing a major proportion of the zinc and iron.  The residue is separated from the leach solution, the residue is treated to recover values of lead and/or silver, and the leach solu-tion is treated to recover zinc, by feeding the solution to another process in which zinc-containing material is treated to recover zinc and which includes an iron-precipitation step.
Patent CA-1150539-A (CA)
Inventor: MCLAIN DONALD E
IPC: B25B13/16
Filed: 1981-05-22
Granted: 1983-07-26
Abstract: NUT AND RETAINER FOR QUICK ADJUSTABLE JAW WRENCH      ABSTRACT OF THE DISCLOSURE A wrench having an adjustable jaw on a neck slidably supported by a guide on a handle with segmental threads on at least one side of the neck. An adjusting nut is threaded on the neck and has segmental threads rotatably and drivingly engageable with the threads on the neck.  The threads on the neck are axially slidable between the ends of the segmental threads on the nut in at least one rotated position of the nut.  A U-shaped spring has spaced arms which springably engage the opposite axial faces of the nut to confine the nut therebetween.  The spring has a connecting bight which is nonrotatably opposed to the wrench handle.  The arms of the spring define openings through which slidably and non-rotatably pass the neck.