baber/WOPTO huggingface dataset:
Patent CA-2015393-C (CA)
Title: Compressor control system to improve turndown and reduce incidents of surging
Inventor: HECKEL BRUCE G
IPC: F04D27/02
Filed: 1990-04-25
Granted: 1993-09-21
Abstract: COMPRESSOR CONTROL SYSTEM TO IMPROVE TURNDOWN AND REDUCE INCIDENTS OF SURGING                 ABSTRACT OF THE DISCLOSURE A  method  and  apparatus  for  regulating  the operation of a compressor system including a compressor moving a gas from an intake conduit through a discharge conduit to a gas storage reservoir are disclosed.   In accordance with the method, an unload valve in an unload conduit connected to the discharge conduit is initially fully closed and an inlet valve in the intake conduit is initially fully opened.  Then the inlet valve is closed by an amount necessary to maintain the discharge pressure at a design pressure level and at a gas flow rate between the design flow level and a minimum flow level.  When the gas flow rate drops below the minimum flow level, the inlet valve is maintained in its last position and the unload valve is opened by an amount necessary to maintain the discharge pressure below a first pressure level set higher than the design pressure level.   If the unload valve remains open beyond a position set point for longer than a first predetermined period of time, the unload valve is fully opened and the inlet valve is fully closed.  Then if the system pressure drops below a second pressure level lower  than  the  design  pressure,  the  control  steps discussed above are repeated.
Patent CA-2017132-C (CA)
Title: Cold bottom emptying crucible
Inventor: GARNIER MARCEL
IPC: F27B14/08
Filed: 1990-05-18
Granted: 1995-08-22
Abstract: This crucible (1) is formed by a conductive wall (6) constituted by a number of hollow longitudinal sectors which are at least partially electrically insulated from one another, passed through internally by a refrigerant fluid and positioned inside an inductor. Said wall is provided in its lower part with an opening (3), inside which there is a removable obturator (4) which is sectorised and cooled like the wall of the crucible. 
<??>This crucible finds application in the smelting of materials of great purity which can be recovered in the liquid state in a convenient, complete and rapid manner. 
<IMAGE>
Patent CA-2017430-C (CA)
Title: Reciprocating conveyor floor members and seals
Inventor: FOSTER RAYMOND K
IPC: B65G25/04
Filed: 1990-05-24
Granted: 1997-12-30
Abstract: The  present  invention  provides  a  reciprocating  floor conveyor having floor members  (10,  10') formed with a side lip  (24,  26)  overhanging either or both side edges.   The lip  (24)  on one  floor  member  (10)  is  contiguous  with  a closely-confronted  side  (16)  or  lip  (26)  of  an adjacent floor  member  (10')  when the  floor members  (10,  10')  are installed.     The   lips    (24,    26)    form   a   narrow, material-excluding gap (28) between the floor members  (10, 10').   An elongated seal strip (38) having a base portion (40)   received   in   and   retained   by   a   longitudinal seal-retaining groove (30) formed in a side (14) of a floor member (10) is provided between each pair of adjacent floor members  (10,  10').   A  longitudinally  straight,  vertically convex side surface  (36)  may be provided vertically above the retaining groove (30) to bias the seal strip (38) into contact  with  a  side  surface  (48)  of  an  adjacent  floor member (10').
Patent CA-2020638-C (CA)
Title: Continuous electroplating of conductive foams
Inventor: BEAN ANDREW S
IPC: C25D7/06
Filed: 1990-07-06
Granted: 2000-05-30
Abstract: The present invention resides in the discovery that a strip of reticulated foam which is semi-conductive can be continuously electroplated, utilizing a cathode roll which is positioned, in a first electroplating zone, outside of the electroplating bath. An anode is immersed in the electroplating bath. The strip of reticulated foam is first introduced into the electroplating bath and travels in the direction from the anode to the cathode roll prior to contacting the cathode roll. In this way, the strip achieves a partial plate at the anode which provides a current path between the anode and the cathode roll effective for sustaining the plating reaction in said first electroplating zone.
Patent CA-2024827-C (CA)
Title: Pressure drop signal generating valve cap for pneumatic tires
Inventor: ACHTERHOLT RAINER
IPC: G08C17/00
Filed: 1990-09-07
Granted: 2001-02-13
Abstract: A valve cap adapted to be screwed onto the tire valve of a pneumatic tire generates a wireless transmissible pressure drop indication signal. The valve cap comprises a valve cap housing comprising a pressure chamber and a reference chamber. The non-blockable pressure chamber is in communication with the tire pressure to be controlled. The reference chamber is pressurized with a desired pressure whenever the valve cap is screwed onto the tire valve. A signal generating means including transmitter means, power supply means and switching means is provided within said valve cap housing. The switching means comprises a conductor section fixedly arranged within the pressure chamber a short distance from a rest position of a deflectable diaphragm. Any tire pressure drop will deflect the diaphragm into the pressure chamber and will complete an electrical circuit whereupon a transmitter circuitry is supplied with voltage/current, and the transmitter means generates a pressure drop indicating signal of limited duration.
Patent CA-2035320-C (CA)
Title: Automatic laundry washer of the rotating drum type
Inventor: BABUIN PIERO
IPC: D06F34/08
Filed: 1991-01-30
Granted: 1995-04-11
Abstract: The invention relates to an automatic laundry washer of the type having a laundering tub in which a drum is rotated by an electric motor at a low speed during a laundering phase, and at a high speed during at least one centrifuging period.  For ensuring a complete discharge of foam and lye in the course of a centrifuging period, a pressure switch is adapted to interrupt the centrifuging period and to disconnect the power supply to the program control unit in response to the level within the laundering tub exceeding a predetermined value.
Patent CA-2039230-C (CA)
Title: Monoclonal antibodies that inhibit growth of kaposi's sarcoma
Inventor: SALAHUDDIN SYED Z
IPC: A61K35/00
Filed: 1991-03-27
Granted: 2002-07-30
Abstract: The present invention involves the use of monoclonal antibodies specific for Oncostatin M to inhibit the growth potentiating effect of Oncostatin M on Kaposi's Sarcoma associated with AIDS. In particular neutralizing anti-Oncostatin M antibodies inhibit the growth of Kaposi's Sarcoma which is potentiated and maintained by Oncostatin M or a factor found in conditioned media of an HTLV-II transformed T cell line.
Patent CA-2040523-C (CA)
Title: Process for facilitating the production of progressive ophtalmic lens, and progressive ophtalmic lens thus produced
Inventor: CHAUVEAU JEAN-PIERRE
IPC: G02C7/02
Filed: 1991-04-16
Granted: 1995-06-27
Abstract: This relates to a progressive ophthalmic lens whose front face (11A) for example comprises, continuously, on the one hand, a central zone (14) which, having a progressively variable curvature along at least a portion of at least one meridian, is the optically useful zone of it and, on the other hand, surrounding this central zone (14), a peripheral connection zone (15) connecting the central zone tangentially. 
<??>According to the invention, the optically useful central zone (14) of this front face (11A) is delimited by a closed curve which, in projection onto a plane perpendicular to the geometrical axis of the assembly, has everywhere an oval shape and the radius of curvature of the radial section of its peripheral connection zone (15) varies circumferentially in value and/or in sign, such that around its peripheral edge (13) the lens is of equal thickness everywhere. 
<??>Application for obtaining progressive ophthalmic lenses which are easier to produce, more aesthetic and lighter. 
<IMAGE>
Patent CA-2043135-C (CA)
Title: Plural frequency matrix multiplexer
Inventor: THOMPSON JAMES D
IPC: H01Q25/00
Filed: 1991-05-23
Granted: 1997-05-27
Abstract: A multiplexer for the transmission of signals on different carrier frequencies includes a Butler matrix with  a  set  of  delay  elements  secured  to  output terminals of the matrix.   Each of the delay elements differs  from the  other delay elements  in that the delays imparted to signals by each of the elements differ by  an  integral  number of delay units.   The selection of frequency values is made in accordance with the  increment in delay unit so as to develop incremental values of phase shift which compensate for phase shift introduced by the phase shift taper of a Butler matrix.  This permits summation of signals from plural input ports of the matrix without the generation of intermodulation products among the various signal channels.
Patent CA-2045792-C (CA)
Title: Material handling system
Inventor: FOURNIER CLAUDE
IPC: D06C5/00
Filed: 1991-06-27
Granted: 1995-02-07
Abstract: A system for handling flexible articles such as tubular hosiery blanks each having a toe portion and a welt or band portion and for subsequently closing the toe portions includes an assembly for retrieving randomly oriented blanks from a supply reservoir, pneumatic feed means for displacing the blanks to a magazine, means for selectively displacing the blanks from the magazine such that the toe portion is always first, means for opening the band portion and positioning the band portion on fingers which expand and convey the blank to a transport tube of a toe closing assembly.  The blank is inverted on the transport tube and the toe portion subsequently sewn.
Patent CA-2051761-C (CA)
Title: Color cathode ray tube with selective light absorption film
Inventor: IWASAKI YASUO
IPC: C09K11/58
Filed: 1991-09-18
Granted: 1997-01-21
Abstract: A color cathode ray tube includes a face plate, and a selective light absorption film formed on the external surface of the face plate to improve the emission tint, the film having a predetermined characteristic of spectral transmittance.   The selective light absorption film is formed of a coating material which consists of a base coatlng including an alcoholic solution of silicon alkoxide having -OH group or -OR group, and an organic or inorganic dye or pigment mixed into the base coating. Such a coating material is applied onto the external surface of the face plate to form the selective light absorption film. The selective light absorption film has main and auxiliary absorbing bands. If the fluorescent face of the face plate includes a blue fluorescent element of ZnS:Ag, a green fluorescent element of ZnS:Au, Cu and Al and a red fluorescent element of Y O S:Eu, the selection is made that the absorption peak of the main absorbing band has a wavelength equal to 580 nm and the absorption peak of the auxiliary absorbing band has a wavelength equal to 660 nm.
Patent CA-2068558-C (CA)
Inventor: KELLER LAJOS EDWARD
IPC: B32B5/18
Filed: 1992-05-13
Granted: 2004-12-21
Abstract: A multilayer opaque, biaxially oriented polymeric film structure. The film structure includes (a) a thermoplastic polymer matrix ire layer having a first surface and a second surface, within which is locate a strata of voids; positioned at least substantially within a substantial number of the voids is at least one spherical void-initiating particle which is phase distinct and incompatible with the matrix material, the void space occupied by the particle being substantially less than the volume of the void, with one generally cross-sectional dimension of the particle at least approximating a corresponding cross-sectional dimension of the void; the population of the voids in the core being such as to cause a significant degree of opacity; (b) at least one thermoplastic polymer intermediate layer having a first surface and a second surface, the second surface of the intermediate layer adhering to at least the first surface of the core layer, the intermediate layer including up to about 12% by weight of titanium dioxide contact pigment; and (c) a titanium dioxide-free, non-voided thermoplastic skin layer adhering to the first surface of the intermediate layer, the void-free skim layer and the intermediate layer together being of a thickness such that the outer surface of the skin code layer clues not, at least substantially, manifest the surface irregularities of the matrix core layer.
Patent CA-2076214-C (CA)
Title: Policing arrangement for atm networks
Inventor: NISHIHARA MOTOO
IPC: H04L47/32
Filed: 1992-08-14
Granted: 1998-07-14
Abstract: In a policing arrangement for an ATM network, every incoming cell is stored in a cell buffer and a virtual path identifier (VPI) contained in the cell is extracted and translated to a corresponding one of a set of threshold values.  Policing circuits of a matrix array are connected column by column for transferring a VPI in accordance with a read/write control circuit.  Each policing circuit of the first column is uniquely responsive to a VPI of a particular value for storing the extracted VPI into a bridge memory, and this column has a greater number of policing circuits than any of the other columns of the array.  At least one of the policing circuits of each row of the array includes a cell counter for incrementing a cell count value in response to the VPI of every incoming cell and decrementing the cell count in response to a VPI of the bridge memory of the policing circuit.  The cell count value is compared with the threshold value and a cell is discarded from the cell buffer when the cell count value exceeds the threshold value.
Patent CA-2081047-C (CA)
Title: Garment hanger and toy combination
Inventor: OSWALD WALTER A
IPC: A63H3/00
Filed: 1992-10-21
Granted: 1995-01-03
Abstract: GARMENT HANGER AND TOY COMBINATION            ABSTRACT OF THE DISCLOSURE           A garment hanger and toy combination comprises a head and body disposed along a longitudinal axis and limbs extending  outwardly  from  the  body  transversely  of  the axis.   Support   means   is   provided   for hanging   the combination  and  is  extendible  outwardly  from  a  recess within a top portion of the head when the combination is to be used as a garment hanger,  and is retractable into the recess when the combination is to be used as a toy. Movement of the support means is along the axis and is limited to axial movement only, with negligible rotational movement. Preferably, the support means is subjected to an outwardly directed resilient force,  and the support means can  be  latched  with  a  latch  structure  against  the outwardly  directed  force  to  hold  the  support  means retracted. The latch structure can be released by direct application of a force to a lower portion of the body, or alternatively  can  be  released  by  bending  the  limb sufficiently to release the latch.
Patent CA-2086675-C (CA)
Title: Process and device for cleaning exhaust gases
Inventor: FLECK CARL M
IPC: B03C3/36
Filed: 1991-07-01
Granted: 2003-01-28
Abstract: A device and process for cleaning exhaust gases, in particular those from diesel engines, in which the exhaust gases are taken through a channel (36a) of a ceramic body (36) where an electric field is generated substantially transversely to the direction of flow, whereby the soot particles deposited on the walls of the channel (36a) are oxidised by free ions or ions adhering to oxygen.
Patent CA-2096464-C (CA)
Title: Method and apparatus for event processing in biological applications
Inventor: SWANSON DAVID K
IPC: A61N1/362
Filed: 1993-05-18
Granted: 1999-08-10
Abstract: A method and apparatus for processing biological signals on an event basis. An event low pass filter (LPF) is provided which passes variations in event features below an event cut-off value, which is analogous to the time-based cutoff frequency. An event high pass filter (HPF) is provided which passes variations in event features that are above an event-rate cutoff. An event variability detector is provided which determines the variation of a discrete variable from values at prior events. An event discriminator is provided for filtering out contributions of unrelated events that are superimposed on a discrete periodic measurement of interest. In all of these techniques, sampling of a biological signal is performed in coincidence with a biological event which does not occur at a constant frequency. In accordance with another aspect, an algorithm is provided using event-based techniques for discriminating abnormal rhythms from normal sinus rhythm on the basis of atrial rate, ventricular rate, and A-V intervals. An interval conditioning stage is provided for processing intervals of atrial beats, ventricular beats, and atrial to ventricular beats and classifying intervals for each according to an adaptive triple-bin technique. The three bins are defined as "current", "fast" and "slow" and each comprises memory space for storing the count of intervals stored into the particular bin and the average value of those intervals.
Patent CA-2096975-C (CA)
Inventor: WU CARL
IPC: C07K16/00
Filed: 1991-11-22
Granted: 2003-04-22
Abstract: The present invention relates to DNA sequence coding for part or all of the heat shock transcription factor or heat shock factor (HSF) proteins derived from humans and Drosophila, and the proteins encoded by these sequences. The present invention also includes methods for detecting HSF in a biological sample. The presence of HSF in the nucleus of a colt can be detected with specific anti-HSF antibody reagents. The presence of such HSF proteins in the nucleus indicates a stressed condition including diseases. Furthermore, the presence of multimeric HSF in the crude ar fractionated cell extract is indicative of a stressed state.
Patent CA-2110826-C (CA)
Title: Clock recovery circuit of demodulator
Inventor: ISHIZU FUMIO
IPC: H04L7/02
Filed: 1993-12-07
Granted: 1999-09-21
Abstract: A clock recovery circuit capable of outputting decision point data without causing any slip of a recovered clock in the case of operation in a continuous mode in a demodulator in which received signals are sampled by a fixed frequency clock to obtain the recovered clock and symbol data are demodulated by using this recovered clock. A shift register stores digital received signals obtained by an A/D conversion of quasi-coherent detection received signals, and a clock phase estimator calculates an estimated phase difference between an output value of a phase generator operated by the fixed frequency clock and a symbol clock of the received signals and outputs timing information and phase information of a decision point for discriminating the data of the received signals. An interpolator inputs the output signal of the clock phase estimator, takes in the digital received signals from the shift register and calculates decision point data by interpolation to output the same. The interpolator operates at the same cycle as the symbol clock on an average.
Patent CA-2115856-C (CA)
Inventor: LUNDBERG PETER L
IPC: G01J3/28
Filed: 1994-02-17
Granted: 2000-10-10
Abstract: Spectral bands are grouped for data acquisition in a spectrophotometer with a charge-coupled detector having a plurality of pixels. Preliminary data is generated on time-integrated radiation to the pixels for a sample. Maximum permitted exposure times for the pixels are calculated from the data and a predetermined maximum exposure. The maximum times are grouped so that for each group the ratio of the highest to the lowest maximum times is less than 100. A group run time is established for each group nominally less than the lowest maximum time in the group. Subgroups are created and ordered so that accumulated readout times for the pixels are less than wait times established to prevent readout contamination from subsequent charge buildup. The spectrophotometer is further operated on the sample for the run time of each group and subgroup to generate spectral data.
Patent CA-2120576-C (CA)
Title: Fully retractable captive screw
Inventor: FRATTAROLA ALBERT J
IPC: F16B5/02
Filed: 1994-04-05
Granted: 1998-07-07
Abstract: A fully retractable captive screw that is low profile, having a snap-in feature allowing for installation of the device into a hole on a panel, by hand, without the need for separate tools.  The fully retractable captive screw has a screw, a knob with a screwdriver recess on top, a cylindrical ferrule with attached snap-in mechanism, and a spring that causes the screw to retract into the ferrule when the screw is not engaged.
Patent CA-2120774-C (CA)
Inventor: LAPP STEVEN P
IPC: H01M50/77
Filed: 1992-09-29
Granted: 2005-01-04
Abstract: A manifold system is described for equalizing electrolyte flow to a plurality of metal/air cells of a fuel cell assembly. The fuel cell comprises: (a) a housing, (b) a plurality of metal/air cells disposed vertically in the housing, (c) air injection means for flowing oxidizing air between the metal/air cells, (d) an electrolyte storage tank, (e) a recirculation loop for continuously recirculating electrolyte from the storage tank through the metal/air cells, (f) an electrolyte inlet manifold forming part of said recirculation loop, said manifold comprising a large manifold tube extending horizontally beneath a plurality of said metal/air cells and a plurality of small feeder tubes extending horizontally, laterally from said large tube, each small feeder tube extending across beneath a single metal/air cell and flow connecting to the bottom of the cell, said large tube having a diameter sufficiently greater than the diameter of the small feeder tubes such that the total combined flow of all of the small feeder tubes does not cause a significant pressure drop in the large manifold tube. Each feeder tube has a length and diameter to provide a friction pressure drop therethrough which is sufficiently high that the static pressure head difference due to elevation at the cell inlet between the lowest and highest cells in an inclined stack is very small compared to the pressure drop across each individual small feeder tube.
Patent CA-2121961-C (CA)
Title: Slider for connecting choker rope to winchline
Inventor: PAQUET ROGER
IPC: F16G11/00
Filed: 1994-04-22
Granted: 1997-07-22
Abstract: A slider  is provided for connecting a  choker assembly including a choker rope having an end provided with a ferrule, to a winchline. The slider has a first winchline-receiving link in the form of a first elongated closed loop defining  a  first  elongated  opening  for  receiving  the winchline. The first link also has a longitudinal axis and a pair of opposite ends on the axis, one of the ends is substantially larger in section than the other one and has a curved bottom wall. This first link also has top and bottom   surfaces,   and   a   substantially   trapezoidal configuration when seen in side elevational view. The slider also has a second choker-rope receiving link in the form of a second elongated loop defining a second opening. This second link is provided with a longitudinal U-shaped slot leading from the second opening out of the second link through an end thereof. This U-shaped slot is sized for receiving the choker rope and has a first extremity within the second opening which defines a seat for the ferrule. The U-shaped slot has opposite side walls sized and shaped to prevent angular displacement of the choker rope within the slot with respect to the ferrule. The walls have edges that are slightly rounded and apertures for receiving a ferrule locking pin to prevent the ferrule from exiting the second link. The slider further has a third connection link in the form of a third closed loop defining a third opening. This third link passes through the first and second openings and connects the first and second links together.  When the slider is used, it is able to conform to any bearing surface while preventing overbending of the choker rope adjacent to the ferrule.