baber/WOPTO huggingface dataset:
Patent CA-2143243-A1 (CA)
Title: Dpsk communicatons with doppler compensation
Inventor: MUI SHOU Y
IPC: H04L27/233
Filed: 1995-02-23
Abstract: A data receiver receives differential phase-shift  keyed  (DPSK)  signals,  and  filters  the signal   by  a   process   including   frequency conversion, under the control of an estimated carrier frequency (fre), to produce a filtered output  signal  which  is  applied  to  a  DPSK demodulator.  The filtering compensates for the Doppler frequency errors, and reduces the phase error.  The estimated frequency is determined by second and third controllable  filters,  which filter the DPSK carrier signal at frequencies above and below the estimated carrier frequency by an offset frequency which depends on the data rate.  A first frequency error estimate is made in a processor coupled to the second and third filters, from the ratio of the amplitudes of the first  and  second  filter  output  signals.    A second-order tracking loop  is coupled to the processor  for  averaging  the  frequency  error estimate over a predetermined number of bits, to generate the estimate of the carrier frequency. The Doppler frequency compensation loop tends to correct the phase error, but may leave residual phase errors.  In an embodiment of the invention, an  estimate of  the phase change per bit  is generated by a differential phase tracker coupled to the output of the first filter, and applied to the demodulator, in which it is used to aid in demodulation.  The estimate of the phase change per  bit may also be applied to  the Doppler frequency compensation loop for aiding in the Doppler frequency compensation.
Patent CA-2143418-A1 (CA)
Inventor: ACOSTA PHYLLIS J B
IPC: A23L33/00
Filed: 1993-11-10
Abstract: The present invention relates generally to a novel generic powder base rich in fats, carbohydrates, vitamins, minerals and trace elements which can be readily admixed with specific amino acids to yield several different therapeutic products for use in nutritional support of adults/children having various inherited metabolic diseases.
Patent CA-2147386-A1 (CA)
Inventor: KLIOT EUGENE
IPC: G02C11/02
Filed: 1995-04-18
Abstract: Eyeglasses having eyeglass accessories releasably attached to the temple pieces of the eyeglasses to allow a fashion accessory such as headgear to be interchangeably interconnected to the glasses are provided.  The connectors joining the headgear to the eyeglasses are substantially hidden from view during use.          The fashion accessory is securely attached to the eyeglasses so that it cannot be dislodged from the eyeglasses by pulling during normal use.  The fashion accessory preferably headgear typically is chosen from a variety of different types of headgear such as fashion head ties, head bands, ear warmers, hats and scarfs.
Patent CA-2149193-A1 (CA)
Inventor: KERRY JAMES E SR
IPC: B43L13/20
Filed: 1995-05-11
Abstract: A template for facilitating marking of entry holes in a surface for passage therethrough of conduit has a flat portion formed of semi-rigid material and two flat sides. The flat portion has a central opening and a plurality of markings on one side.  The markings are parallel to a section of the perimeter and spaced inwardly at graduated distances therefrom.  A plurality of slots are formed through the flat portion, spaced apart and parallel to one another, substantially coextensively with each corresponding one of the plurality of markings, to thereby permit a user of the template to make a mark through one of the slots to indicate an outer edge of a hole of a preselected size to be formed using the template.
Patent CA-2149936-A1 (CA)
Title: Water cooler
Inventor: PARKER GLEN LESLIE
IPC: F25D/
Filed: 1995-05-23
Abstract: A water cooler having a container with a reservoir for storing water has a thermoelectric module operable to cool a conductor plate and form ice in the reservoir.  A temperature sensor connected to the plate senses the temperature of the plate and activates a timer when the temperature is below the temperature at which water freezes.   The timer operates a selected period of time to allow a block of ice to be formed on the plate.  A photoelectric sensor operable to sense a selected size of the block of ice functions to actuate a switching device that changes the polarity of the electric power supplied to the thermoelectric module to supply heat energy to the plate to release the block of ice from the plate.  The released block of ice floats in the water in the reservoir and cools the water.
Patent CA-2150960-A1 (CA)
Title: Use of n-[[5-(naphthalen-1-yl)-1,3-dioxan-2-yl]alkyl] -acetamide derivatives for the preparation of medicinal products which are useful in the treatment of neurodegenerative disorders
Inventor: BENAVIDES JESUS
IPC: A61P25/28
Filed: 1995-06-07
Abstract: Use of the compounds of formula (I)              (I) in which Ar represents a naphthalen-1-yl group optionally carrying a substituent chosen from halogen atoms and methyl, methoxy and cyclopropylmethoxy groups and n = 1 to 3, in the form of cis, trans stereoisomers or of a mixture of the two stereoisomers, for the preparation of medicinal products which are useful in the treatment of neurodegenerative disorders.
Patent CA-2151941-A1 (CA)
Inventor: MOGILNICKI VICTOR D
IPC: B23C9/00
Filed: 1993-10-01
Abstract: An apparatus and method for balancing a high speed rotary tool assembly (1) is provided. The apparatus includes a rotary tool holder (3) having an axis of rotation (11), a cutting tool retainer (13) in the rotary tool holder (3) having a lockring (23) that circumscribes the axis of rotation (11) of the holder (3), and a pair of axially spaced balancing rings (35a, 35b) for balancing the entire rotary tool assembly (1) which are rotatably mounted around bearing surfaces (37) circumscribing the locking (23) so as to be angularly positionable around the axis of rotation (11) of the tool holder (3). In the method of the invention, the unbalance of the tool holder (3) and cutting tool (17) is determined, and then the rings (35a, 35b) are rotatably adjusted about the bearing surface (11) on lockring (23) to create an unbalance which cancels out the unbalance of the tool holder (3) assembly.
Patent CA-2152381-A1 (CA)
Title: Ion-conductive polymer and electrolyte additives
Inventor: POWELL JOHN R
IPC: H01G11/56
Filed: 1993-12-21
Abstract: Compounds are provided for use in an electrolyte comprising repeating unit selected from the group consisting of cyclic and heteorcyclic species having y carbon atoms and z heteroatoms, X, and where y is 4, 5 or 6 and z is 0, 1 or 2. The heteroatom is selected from the group consisting of O, S and N. The repeating unit is further substituted by four to six pendant groups having the formula (CHR1)mO(CHR1CHR1O)nY, where the majority of pendant groups comprises at least two O and further, in which m is 0 or l; in which n is in the range of 0 to 25, in which each R1 is the same or different and R1 is selected from the group consisting of H, alkyl, allylic and alkenyl radicals having 1 to 18 carbon atoms and Y, and in which each Y is the same or different and Y is a functional group selected from the group consisting of polymerizable functionalities, plasticizing agents and ionic species. Electrolytes, plasticizers and macro-ions prepared from these compounds are described.
Patent CA-2153664-A1 (CA)
Title: Overbased alkylated alkyl salicylates
Inventor: CAMPBELL CURTIS B
IPC: C10N30/08
Filed: 1994-12-21
Abstract: This invention is directed to overbased alkylated alkyl salicylate which are useful additives for lubricating oil compositions. In particular, the compositions of this invention impart detergency and dispersancy to the lubricating oil composition as well as provide for alkalinity reserve.
Patent CA-2154484-A1 (CA)
Inventor: MCGRAIL PATRICK TERENCE
IPC: B29C70/10
Filed: 1994-02-18
Abstract: A curable composite material has a thermosettable resin matrix and a continuous-fibre reinforcement impregnated by said matrix. The fibres of the reinforcement are sized with an aromatic thermoplastic resin, preferably selected from polysulphones, imidised polysulphones and polyisoimides.
Patent CA-2154659-A1 (CA)
Title: Improved sash lock
Inventor: OLSEN CARL J
IPC: E05C3/04
Filed: 1994-02-01
Abstract: The present invention relates to a sash lock (10) for a double hung window. The sash lock (10) comprises a latch portion (12) and a keeper portion (14), (a) the latch portion (12) comprising a pivotally secured arcuate member (20) having a chamfered chamber (26) defined by an outer flange (20) extending from a first end of the arcuate member (28) to a handle end of the latch portion (12), the handle extending obliquely from the latch portion (12). The arcuate member (20) is pivotally attached to a latch base portion which may be secured to a first sash (15), (b) the keeper portion (14) having a base portion which may be secured to a second sash (16), the keeper portion (14) having an artuate engaging shoulder (27) and a flange engaging surface (29), being configured such that they substantially engage the Hange(28) and the chamfered chamber (26) respectively in a manner which substantially limits movement of the first sash (15) with respect to the second sash (16).
Patent CA-2155009-A1 (CA)
Inventor: GULBRANDSEN CARL E
IPC: A61K31/59
Filed: 1994-01-31
Abstract: Method of increasing the strength of contraction in the mammalian heart muscle by administering to the mammal an effective amount of an activated vitamin D compound, i.e., a 1.alpha.-hydroxylated vitamin D compound which binds with the vitamin D receptor and produces a positive inotropic effect in the heart muscle. The activated vitamin D compound may be given as a means to prevent myocardial failure or to treat myocardial failure.
Patent CA-2155027-A1 (CA)
Title: Air bag and manufacturing method therefor
Inventor: BERGER JOHANN
IPC: B60R21/231
Filed: 1994-01-27
Abstract: An airbag is described which can be made of a single blank (50) of textile material or plastic sheet.  The blank can be composed of several parts, but is preferably in one piece.  Parts of the blank can be folded along fold pleats (52a, -i) in mutually parallel planes closely adjacent to each other.  The folding pleats pass completely across the blank. Two sections (54) of the blank have mirror-image shapes along one folding pleat.  After folding in superimposed planes, the edges which are to be joined lie over one another, and can therefore be easily sewn up.  If the inner folding pleats (52i) and outer folding pleats (52a) alternate in the blank, the blank can be folded into a shape in the manner of a closed umbrella, the inner fold pleats (52i) corresponding to the ribs of the umbrella, and the sections (54) connected by the outer fold pleats (52a) projecting outwards.  Two sections (54) adjoining an outer folding pleat (52a) are placed on one another, and their free edges (56) are joined to one another, in particular by sewing.  By using a special sewing device, all of the edges to be sewn can be sewn simultaneously.
Patent CA-2156413-A1 (CA)
Title: Apparatus and method for uniformly irradiating a strand
Inventor: SCHUETZ MARLIN NILES
IPC: B29C35/08
Filed: 1994-02-25
Abstract: An apparatus and method for uniformly irradiating a strand (22) of plastic material by twisting the strand as it is advanced in a plurality of paths transverse to an electron beam. A set of pinch rolls are positioned on opposite ends of the electron bean generator to advance and twist the strand. Lift cams (43a, 43b) periodically release the twist on the strand at positions of maximum twist by forcing the pinch rolls apart. Each set of pinch rolls includes upper (31a, 31b) and lower rolls (32a, 32b) adjacent a medial roll (30a, 30b) which, in turn, is driven in alternating axial direction to impart twist to the strand. The medial rolls are driven in alternating axial directions by a cammed surface (40b) thereon and a cam follower (41b) and synchronized to move 180° out of phase from each other. A series of three spaced apart idler rolls are also provided to form a tandem figure-eight pattern in side view for the strand to compensate for eel set in the strand.
Patent CA-2157348-A1 (CA)
Title: 3-¬4-(1-substituted-4-piperazinyl)butyl|-4-thiazolidinone and related compounds
Inventor: HRIB NICHOLAS J
IPC: C07D417/14
Filed: 1995-08-31
Abstract: There are disclosed compounds of the formula,   where n is 0, 1 or 2; A is       where X in each occurrence is independently hydrogen, halogen, loweralkyl, hydroxy, nitro, loweralkoxy, amino, cyano, trifluoromethyl or methylthio; Y in each occurrence is independently hydrogen, halogen, loweralkyl, hydroxy, nitro, loweralkoxy, amino, cyano, trifluoromethyl or methylthio; K is N or CH; m is 1 or 2; k is 1 or 2; R1 and R2 are independently hydrogen, loweralkyl,   ,         or aryl except that when R1 is   ,      or aryl, R2 is hydrogen, or alternatively R1 + R2 taken together with the carbon atom to which they are attached form a cyclopentane, cyclopentane, cyclohexane, cycloheptane, pyran, thiopyran, indan or piperidine ring; R3 and R4 are independently hydrogen or loweralkyl, or alternatively R3 + R4 taken together with the carbon atom to which they are attached form a cyclopentane, cyclohexane, cycloheptane, pyran, thiopyran, pyrrolidine or piperidine ring, the term aryl signifying an unsubstituted phenyl group or a phenyl group substituted with 1, 2 or 3 substituents each of which being independently loweralkyl, loweralkoxy, hydroxy, halogen, loweralkylthio, cyano, amino or trifluoromethyl, which are useful as antipsychotic, analgesic, anticonvulsant and anxiolytic agents.
Patent CA-2160014-A1 (CA)
Title: Creased end to enhance composite can venting
Inventor: PERRY MICHAEL R
IPC: B65D3/14
Filed: 1994-08-29
Abstract: The present invention includes a lid (16) with a channel (18A-18H) for use in sealing a pressurizable can (12), the lid having a channel for releasing gases generated within the can while substantially preventing the release of liquid from the can. The present invention also includes a method for venting gases from a can having a lid without degrading material stored in the can and substantially preventing the release of liquid from the can. The method includes making a channel in the lid, with the channel traversing the lid.
Patent CA-2160503-A1 (CA)
Title: Wideband vector modulator
Inventor: HALLORAN TIMOTHY
IPC: H04L27/20
Filed: 1995-10-13
Abstract: A vector modulator that sums outputs of a plurality of quadrature-phase-shift-key (QPSK) modulator elements, each controlled by two digital input signals and a single local oscillator. The local oscillator provides a periodic sinusoidal output signal, and the modulator elements process the periodic sinusoidal output signal and the digital input signals. The state of the respective digital input signals determines which of four phase states are present at the output of the QPSK modulator. A plurality of summing devices are coupled to outputs of the modulator elements, and one summing deviceprovides an analog constellation output signal of the vector modulator. A plurality of attenuators are provided for amplitude weighting output signals from the plurality of modulator elements. The outputs of the modulator elements are summed under control of their two respective digital input signals and the local oscillator to convert the digital input signals into phase and amplitude shifted, periodic, analog signals comprising the analog constellation output signal. In a second embodiment, a power divider is coupled between the local oscillator and the plurality of modulator elements and a powercombiner is used to combine the summed output signals derived from the modulatorelements. The modulator elements may each be a GaAs microwave monolithic integrated circuit that includes a 90° coupler followed by first and second input amplifiers for respectively receiving and amplifying the periodic sinusoidal signal derived from the local oscillator, and first and second data amplifiers for respectively receiving and amplifying I and Q data input signals to provide amplified I and Q data input signals. First and second mixers are respectively coupled to outputs of the respective input and data amplifiers for multiplying the amplified local oscillator signals with the I and Q data input signals. A summing device is coupled to respective outputs of the mixers for generating a modulated output signal of the modulator element.
Patent CA-2161563-A1 (CA)
Title: Hydraulic system for recovering refrigerants
Inventor: ZUGIBE KEVIN J
IPC: F25B45/00
Filed: 1995-10-27
Abstract: A hydraulic refrigerant recovery system and method moves refrigerant liquid or refrigerant vapor. Substantial pressure is developed by the hydraulic unit for moving a substantially larger piston (18) to increase the pumping rate for refrigerant. Only the size of the inlet line (10) for the hydraulic unit limits the pumping capacity, unlike the capability experienced previously with pneumatic motion for refrigerant liquids. The invention system includes a hydraulic pump (14), oil reservoir (16), a hydraulic cylinder (20), a spool valve (22) and a limit switch assembly (24).
Patent CA-2163866-A1 (CA)
Title: Sulfur and mercaptan removal from hydrocarbon streams containing reactive unsaturates
Inventor: OU JOHN DI-YI
IPC: C10G29/16
Filed: 1994-05-27
Abstract: Sulfur and mercaptans in hydrocarbon streams comprising reactive unsaturates are removed by contacting the hydrocarbon stream at mild temperatures with a hydrogen reduced metal oxide, such as copper, zinc and/or aluminum oxide, without the undesirable byproduct reaction of oligomerization or polymerization of the reactive unsaturates.
Patent CA-2165699-A1 (CA)
Title: Pneumatic actuated switch
Inventor: STASH ANDREW G
IPC: H01H35/34
Filed: 1995-12-20
Abstract: A pneumatic actuated switch comprised of a generally cylindrical housing formed of a first housing section and a second housing section having an interior cavity, an annular compression surface on the first housing section dimensioned to oppose and align with an annular compression surface on the second housing section, at least one locking member on the housing sections for locking the first housing section to the second housing section, a pressure responsive member disposed within the cavity defined by the housing, the pressure responsive member defining a first chamber and a second chamber, the diaphragm element formed of a resilient material and including a seal member formed along the peripheral edge of the diaphragm element, the seal member being dimensioned to be compressed by the compression surfaces of the first and second housing sections and to form a fluid-tight seal between the first and second chambers and a compression limiting arrangement for limiting compression of the seal member.
Patent CA-2166105-A1 (CA)
Title: Enzymatic preparation of monic acids
Inventor: HAYES ESME FAITH
IPC: C12P17/16
Filed: 1994-06-21
Abstract: A process for the production of monic acids which comprises contacting a corresponding pseudomonic acid or an ester thereof with a hydrolase enzyme from a suitable microorganism, in particular Streptomyces sp..
Patent CA-2166472-A1 (CA)
Title: Air dryer system
Inventor: ELAMIN NAMAN ALI
IPC: B01D53/26
Filed: 1994-07-28
Abstract: A compressed air system includes an air drying subsystem (22) which can be configured either in an intermittent mode, in which a separate purge volume intermittently purges the desiccant used by the air drying systems when the compressor (12) goes off load, or in a continuous flow mode, in which the purge volume is replaced by a second desiccant cartridge and the two desiccant cartridges (24, 26) are alternatively purged and used to dry the compressed air.
Patent CA-2167216-A1 (CA)
Title: Quick step stake system
Inventor: HAYES-PUGH JAMIE VERNON
IPC: A01G9/12
Filed: 1996-01-15
Abstract: In a free standing stake for supporting a variety of items, i.e. agricultural signs, fences, tree saplings and other similar applications, it is known to require a hammer of some type to drive the stake into the ground. In this invention the user may apply their own body weight to a step attached to the stake, allowing them to easily press the stake securely into place; thus eliminating the need for a pile driving system of some type. It is also know that stakes of this nature are provided by manufacturers in cumbersome lengths which inhibit the application of the stake, and dramatically increase the handling and shipping costs associated with current products. In this invention, a methodology and design have been developed allowing the production of a stake which can be shipped in pieces thus reducing the cost of shipping and handling, as well as the effort needed to insert the stake into the ground.
Patent CA-2167902-A1 (CA)
Title: Remote duplicate database facility with database replication support for online ddl operations
Inventor: CARR RICHARD W
IPC: G06F11/14
Filed: 1996-01-23
Abstract: A local computer system has a local database, application programs thatmodify the local database, and a transaction manager that stores audit records in a local audit trail reflecting those application program modifications to the local database. A remotely located computer system has a backup database. A remote data duplication facility (RDF) maintains virtual synchronization of the backup database with the local database. The RDF includes an extractor process executed by the local computer system, and a receiver process and a plurality of updater processes executed by the remote computer system. The extractor process extracts audit records from the local audit trail and transmits those records to the receiver process. The receiver distributes the received audit records to a plurality of image trail files in the remote computer system for processing by updater processes, which initiate redo operations of database modifications denoted in at least a subset of the audit records against the backup database. A catalog manager on the local computer system performs online database restructurings while application programs continue to modify the database. The transaction manager stores a Stop Updaters audit record in the local audit trail when each online database restructuring successfully completes. The extractor process transmits the Stop Updaters audit record to the remote computer system and the receiver process moves a copy each received Stop Updaters audit record into all of the image trails. Finally, each updater process stops execution when it reads a Stop Updaters audit record in its assigned image trail file.
Patent CA-2169982-A1 (CA)
Title: Indicating apparatus for indicating a vacuum
Inventor: MOESSINGER KLAUS
IPC: F02D35/00
Filed: 1996-02-21
Abstract: An  indicating  apparatus  for  indicating  a  vacuum, particularly for indicating the vacuum on the filtered-air side of an air filter for an internal-combustion engine, including a housing and a piston which is movably disposed in the housing and which separates a vacuum area from an ambient-pressure area.  A snap element is provided which is activated by the piston and,  at a predetermined vacuum, triggers an electric contact.
Patent CA-2170946-A1 (CA)
Title: Process for the copolymerization of carbon monoxide with an olefinically unsaturated compound
Inventor: BAARDMAN FRANK
IPC: C08G67/00
Filed: 1996-03-04
Abstract: A process for the copolymerization of carbon monoxide with an olefinically unsaturated compound comprising suspending a solid particulate material in a liquid diluent in which the polymer to be produced forms a suspension, and contacting the monomers in the liquid diluent containing the suspended solid particulate material with a catalyst composition which is based on a source of a Group VIII metal and a boron hydrocarbyl compound.
Patent CA-2174731-A1 (CA)
Inventor: COTTENS SYLVAIN
IPC: A61P37/06
Filed: 1994-12-16
Abstract: Novel demethoxy derivatives of rapamycin of formula (I) are found to have pharmaceutical utility, particularly as an immunosuppressants. In formula (I) R2 = formula (II) or formula (III), X, Y, R1, R3, R3, R4, R5 are as defined in the application.