baber/WOPTO huggingface dataset:
Patent CA-2233957-C (CA)
Inventor: KOSHAK JOHN W
IPC: B66B5/18
Filed: 1996-10-04
Granted: 2005-12-06
Abstract: A safety brake device (1) for hydraulic elevators acts by arresting the axial movement of the elevator ram (3) with respect to the main hydraulic cylinder (5) of the elevator. The safety brake (1) utilizes two lever acting brake arms (27) lined with an accretable metal (31), for example annealed copper, as the friction material. When actuated, the brake arms (27) contact the ram (3) circumferentially to slow and stop the falling ram. The lining material (31) is machined inside the brake arms (27) to a diameter slightly less than the diameter of the ram (3), and when actuated, the accretable material (31) on the brake arms (27) contacts the ram (3) with sufficient frictional force to stop the downward motion of the ram (3).      The safety brake (1) may be actuated by loss of hydraulic pressure, by an electronic signal from a hydraulic pressure detector, by down overspeed or by an uncontrolled down motion detector. In the case of the hydraulic pressure loss, reapplication of normal pressure in the hydraulic cylinder (5) will automatically reset the brake (1). The safety brake device (1) can also be configured for use as a safety brake on other hydraulic or pneumatic cylinders or for use as a safety brake on cable-actuated traction elevators.
Patent CA-2236242-C (CA)
Title: A digital controller for a cooling and heating plant having near-optimal global set point control strategy
Inventor: CASCIA MARK A
IPC: F28F27/00
Filed: 1998-04-27
Granted: 2001-01-30
Abstract: A DDC controller is disclosed which implements a control strategy that provides for near-optimal global set points, so that power consumption and therefore energy costs for operating a heating and/or cooling plant can be minimized. The controller can implement two chiller plant component models expressing chiller, chilled water pump, and air handler fan power as a function of chilled water supply/return differential temperature. The models are derived from a mathematical analysis using relations from fluid mechanics and heat transfer under the assumption of a steady-state load condition. The analysis applies to both constant speed and variable speed chillers, chilled water pumps, and air handler fans. Similar models are presented for a heating plant consisting of a hot water boiler, hot water pump, and air handler fan which relates power as a function of the hot water supply/return differential temperature. A relatively simple technique is presented to calculate near-optimal chilled water and hot water set point temperatures whenever a new steady-state load occurs, in order to minimize total power consumption. From thecalculated values of near-optimal chilled water and hot water supply temperatures, a near-optimal discharge air temperature from a central air handler can be calculated for each step in load. Although the set points are near-optimal, the technique of calculation is simple enough to implement in a DDC controller.
Patent CA-2239752-C (CA)
Inventor: ROBISON MILAN W
IPC: B27L11/00
Filed: 1998-06-05
Granted: 2003-12-16
Abstract: A wood chipper knife holder assembly for a power driven rotor head has at least one opening in its wood confronting surface for the knife holder assembly which includes a mount block.  A counter-knife receiving surface opposite the wood confronting surface of the rotor head is provided on the mount block for a counter-knife and a reversible knife blade with cutting surfaces along opposite transverse edges is received on the counter-knife.  A clamp plate secures to clamp the knife in a projecting cutting position.  The counter-knife has at least one pair of spaced apart pin openings and the knife blade has at least one pair of complemental pin openings, and pins are received in the knife blade openings and counter-knife pin openings to permit 180° relocation of the knife.
Patent CA-2243222-C (CA)
Inventor: JONES WILLIAM THOMAS
IPC: A61J7/04
Filed: 1998-07-15
Granted: 2002-07-23
Abstract: A medication container has a tubular container body with an upper open end, a cap detachably securable to the upper end of the container body by clockwise rotation relative thereto and removable from the container body by counter clockwise rotation relative thereto, and a cap liner within the cap and having a peripheral portion engageable with the upper end of the container body to close the upper end. The cap liner having an upwardly extending wall and the cap having a downwardly extending wall adjacent the upwardly extending wall of the cap liner.      The cap and the cap liner have inter-engaging mechanism provided on the downwardly extending wall of the cap and the upwardly extending wall of the cap liner to prevent rotational movement therebetween when the cap is rotated in one direction relative to the container body and permit relative movement therebetween when the cap is rotated in an opposite direction relative to the container body. The cap and the cap liner have indicia which indicated the next dosage time when the cap is rotated in the opposite direction.
Patent CA-2243448-C (CA)
Title: Data output control method from device with a plurality of queues
Inventor: SHIMONISHI HIDEYUKI
IPC: H04L47/6275
Filed: 1998-07-17
Granted: 2002-02-19
Abstract: A data output control device which stores an input data within a queue, before outputting data to an output circuit  from the  respective queues, so as  to guarantee minimum speed of the output data, enables processing amount of selecting operation of the output queue to be reduced. In cases where the data is stored within the queue, when the queue does not possess data with the exception of its input data, if a counter value of the queue is more than 1 (one), the number of the queue is stored within the rearmost of the transmittable queue number list, while if a counter value of the queue is 0  (zero), the number of the queue is stored within the rearmost of the non-transmittable queue number list. The queue number of the forefront of the transmittable queue number list is taken  in every respective data output time intervals. When the transmittable queue number list is empty,  taking the queue number of the forefront of the transmittable queue number list, after it causes the content of the non-transmittable queue number list to shift to the transmittable queue number list to initialize the counter of respective  queues.  The  counter  value  of  the  queue  is subtracted by one, while outputting one of the data from the queue of the taken  number to the output circuit. When the queue still possesses data,  if the counter value is more than 1 (one), the number of the queue is stored within the rearmost of the transmittable queue number list, while if the counter value is 0 (zero), the number of the queue is stored within the rearmost of the non-transmittable queue number list.
Patent CA-2246279-C (CA)
Inventor: REIDERMAN ARCADY
IPC: G01R33/44
Filed: 1998-09-02
Granted: 2002-03-26
Abstract: A nuclear magnetic resonance well logging apparatus, comprising an antenna for inducing a radio frequency magnetic field in earth formations surrounding the apparatus and for detecting nuclear magnetic resonance signals from the earth formations; and a magnet for inducing a static magnetic field within the earth formations. The magnet is formed from a powdered, electrically conductive permanent magnet material. The grain size of the magnet material small enough with respect to the frequency of the radio frequency magnetic field to substantially prevent intragranular power loss of the radio frequency magnetic field. The magnet is formed from electrically isolated blocks of the magnet material each having a thickness less than a skin depth of the radio frequency magnetic field within the magnet material. The boundaries between the blocks are oriented to interrupt flow of eddy currents in the magnet resulting from the radio frequency magnetic field. In a preferred  embodiment, the magnet material comprises powdered, epoxy resin-bonded Samarium-Cobalt.
Patent CA-2248735-C (CA)
Inventor: GALLAVAN MICHAEL FLOYD
IPC: G01R15/12
Filed: 1998-09-28
Granted: 2001-09-04
Abstract: A voltage measurement instrument such as a digital multimeter is provided with transient overvoltage input protection. Internal walls are integrally molded with the instrument case and disposed in close proximity to the input receptacles and terminals to separate conductive surfaces and provide transient overvoltage barriers. Top and bottom wall portions are fitted together in tongue-and-groove fashion to increase the creepage and clearance path without increasing the linear distance between conductive surfaces. This arrangement also allows the instrument to maintain a low profile.
Patent CA-2251954-C (CA)
Inventor: CARON JEAN GUY
IPC: B65G57/11
Filed: 1997-04-21
Granted: 2003-08-19
Abstract: A method and an apparatus for collecting plates from two rows of plates travelling side-by-side on a moving conveyor comprising inverting plates sequentially in one row of plates and merging said two rows of plates by depositing a plate from one row onto a plate in the other row to form a single row of double plates each having an inverted plate, and assembling a single row of said double plates into stacks. The double plates are assembled into stacks preferably by shingling the double plates to assemble a plurality of overlapped double plates, stacking shingled double plates to form horizontal stacks, turning each horizontal stack onto a side or end of the stack to form a vertically-stacked bundle, and rocking the vertically-stacked bundle on the side or end to align the plates on the side or end, rotating the bundle vertically through 90~ onto an adjacent end or side, and rocking the bundle on the adjacent end or side to align the plates on the adjacent end or side, whereby the plates form a squared bundle having even sides and ends. In one embodiment the plates are lead alloy battery plate electrodes each having a tab extending from a side edge thereof, the two rows of plates are travelling side-by-side on a first conveyor with the tabs of one row of plates facing the tabs of the otherrow of plates, the plates in one row of plates are inverted by passing the plates sequentially over an endless belt having an upper moving surface turning from a substantially horizontal plane through about 90~ to a substantially vertical plane at a linear speed effective to turn the plates upside down onto a second conveyor, and the two rows of plates are merged by transferring one row of plates onto a diagonal conveyor intersecting the second conveyor and controlling the relative speeds of the second conveyor and diagonal conveyor whereby each plate on one conveyor is deposited on a plate of the other conveyor to form a pair of double plates with the tabs of the two plates at least partially overlapping each other.
Patent CA-2256769-C (CA)
Inventor: MERRY RICHARD P
IPC: F01N3/28
Filed: 1996-10-15
Granted: 2004-07-27
Abstract: An insulating liner (40) for use with exhaust system or pollution control devices such as catalytic converters (18) and diesel particulate filters or traps. The insulating liner is shown in relation to an end cone (14) for use with a catalytic converter. The end cone includes an outer metallic end cone and a free-standing insulating cone (40) positioned within the outer metallic end cone. A substantial portion of the inner surface of the insulating liner is exposed to hot exhaust gas from an internal combustion engine. The insulating liner is preferably formed of a composite containing inorganic fibers and/or particles, which makes the insulating liner rigid, yet capable of withstanding repeated mechanical and thermal shocks.
Patent CA-2257426-C (CA)
Inventor: DUNCAN MALCOLM
IPC: B66C23/44
Filed: 1997-06-05
Granted: 2006-05-30
Abstract: This invention relates to a roll bar and crane device (10) comprising a firs t leg member (12) and a second leg member (14) both of which are attachable to a vehicle. A brace means (22) is provided for use in bracing at least one of the leg members in an upright configuration, the brace means (22) being at least partly releasably attache d to the at least one leg member. The device also includes an elongate lifting member (76) defining a first and a second end region (102 a nd 100), the first end region (102) being releasably attached to the first leg member (12), the second end region (100) being attached to the second leg member (14) to allow the lifting member (76) to selectively pivot about both a vertical axis and a horizontal axis, thereby allowing the device (10) to operate as a crane when the first end region (102) is released from the first leg member (12) and allowing the device (10) to operate as a roll bar when the first end region (102) is attached to the first leg member (12).
Patent CA-2260314-C (CA)
Inventor: LAURIELLO PHILIP JOSEPH
IPC: H04J14/02
Filed: 1999-01-25
Granted: 2002-08-06
Abstract: The invention is directed to an optical node, e.g., a so-called add/drop site, that receives an optical carrier signal formed from a plurality of component optical signals of respective wavelengths and a plurality of different identification signals which identify respective ones of the wavelengths. As is typically the case, the node includes a demultiplexer that demultiplexes the optical carrier signal and outputs the demultiplexed component optical signals to respective optical paths. Disadvantageously, each of the demultiplexed optical component signals includes all of the identification signals as a result of such demultiplexing. However, we dispose an optical translator unit in at least one of the optical paths to remove all of the identification signals from the one component optical signals and also reset the power level of that signal. A transmitter in the translator unit outputs the latter signal as an optical signal in which the wavelength of the outputted optical signal may be changed on an optional basis to a wavelength that is different from the wavelength of the one component optical signal.
Patent CA-2261440-C (CA)
Inventor: CHRISTEN JULES J
IPC: F16D59/02
Filed: 1999-02-11
Granted: 2007-09-18
Abstract: An apparatus for braking an elevator includes a storage tank (1) supplying a pressure medium (1.1) under low pressure through a line (2) to a brake cylinder (5) of a brake unit (BE). An adjustable restrictor (3) and a valve (4) are connected in series in the line (2) A piston (10) slides in the brake cylinder (5) between actuated and unactuated positions and has an attached brake lining (6) for engaging a traction sheave (8) of the elevator. A yoke (9) is attached to the brake cylinder (5) and piston pin (11) attached to the piston (10) slides in the yoke. A compression spring (12) acts between the yoke (9) and the piston (10) to move the piston to the actuated position and generate the required force for the braking and holding of the traction disc (8). The valve (4) is opened to release the pressure medium (1.1) front the brake cylinder (5) and allow the spring (12) to move the piston (10) to the actuated position. The piston (10) is returned to the unactuated position by means of a resetting nut (18) cooperating with the piston pin (11) and the yoke (9). The valve (4) is opened to refill the brake cylinder (5) with the pressure medium (1.1) and subsequently the valve is closed and the resetting nut (18) is released to maintain the piston (10) in the unactuated position.
Patent CA-2261470-C (CA)
Title: Tamper-resistant brake actuator and method of making the same
Inventor: FISHER ALBERT
IPC: F16D65/22
Filed: 1999-02-11
Granted: 2002-06-11
Abstract: The present invention provides a brake actuator containing a spring and including a flange case having an outwardly facing receptacle, and a head having an inwardly facing receptacle. The head fits over the flange case such that the inwardly facing receptacle corresponds to the outwardly facing receptacle, and the actuator also includes a key positioned within the receptacles, whereby the head is rigidly secured to the flange case. According to one embodiment, the inwardly facing receptacle comprises a plurality of spaced-apart dimples, and the outwardly facing receptacle comprises a continuous, annular groove. According to another embodiment, the flange case includes an outwardly facing groove above the outwardly facing receptacle, and the brake actuator further includes a diaphragm having an outer periphery clamped within the groove in an airtight manner by the head. The present invention also provides a method of securing a head of a brake actuator to a flange case of the brake actuator. The method includes the steps of providing the head with an inwardly facing receptacle, and the flange case with an outwardly facing receptacle. The head is positioned onto the flange case such that the inwardly facing receptacle corresponds to the outwardly facing receptacle.  Then the inwardly and the outwardly facing receptacles are substantially filled with molten material, and the molten material is allowed to harden. According to one embodiment, the molten material is injected into the receptacles under pressure.
Patent CA-2268402-C (CA)
Inventor: SANZ THIERRY CHRISTIAN
IPC: F02C7/00
Filed: 1999-04-07
Granted: 2006-12-19
Abstract: The method allows one to improve the seal on the inside of the rectifiers (3) of the high pressure turbine at the lower platform (6). It mainly consists of applying to the lower part of the external surface of the liner (8), a protective deposit before carrying out a filling by diffusion brazing between this liner (8) and the rectifier (3). Such a deposit, particularly of anti-adherent ceramic, makes it possible for the braze to avoid fixing the lining (8) onto the rectifier (3) at the lower platform level (6). Application to turbojet engines
Patent CA-2268642-C (CA)
Inventor: CLARE SEAN
IPC: E05F15/643
Filed: 1999-04-09
Granted: 2004-08-31
Abstract: An integrated system of components transport an automotive sliding door through its range of motion while providing adequate user safety. An automatic sliding door opening/closing system comprises a continuous, powered belted drive system located on a vehicle body, and a clamp arrangement capable of fixably attaching a vehicle door to the belt drive system so as to be automatically driven along a predetermined path and capable of releasing under predetermined conditions. The powered belt drive system is located so as to be combined with one of a van door's standard hinge system's three body tracks. The clamp arrangement may be a rotary device biased into a pinching action on the belt via a cam and spring arrangement.
Patent CA-2277558-C (CA)
Inventor: GRAY ARTHUR A
IPC: B68B1/04
Filed: 1999-07-13
Granted: 2003-05-20
Abstract: A device for controlling a horse with a line which contains a first layer of material joined to a second layer of material, several filaments located between the first and second layers of material and extending through an opening in one of such layers of material, a locking device connected to such filaments for removably connecting the line to a horse's bit, a first crimping sleeve disposed around such filaments and above the layers of material, and a strap with fastening means for connecting the line to a horse's bit.
Patent CA-2280386-C (CA)
Inventor: BOSNAR MIRO
IPC: G01V3/165
Filed: 1999-08-16
Granted: 2007-11-20
Abstract: An electromagnetic geophysical mapping instrument comprising a transmitter and a transmitter coil connected to the transmitter, the transmitter generating intermittent current pulse waveforms formed by half-sinusoidal output waveform segments of a waveform having a frequency equal to a resonant frequency of the transmitter coil, and a receiver, in which the transmitter generates current pulses including pulses comprising a plurality of immediately successive half- sinusoidal waveforms of common polarity. In a time domain instrument, the pulses will typically comprise spaced bursts of immediately successive half-sinusoidal waveforms of the same polarity, whereas in a frequency domain instrument, the pulses will immediately succeed each other and be of alternating polarity. The pulse lengths may in this case be equal, or vary in a manner providing a desired output spectrum, for example according to a pseudo-random sequence.
Patent CA-2283157-C (CA)
Title: Methods and materials for degrading xanthan
Inventor: TJON-JOE-PIN ROBERT M
IPC: C12N9/24
Filed: 1998-03-06
Granted: 2009-12-15
Abstract: Xanthan molecules are degraded using a xanthanase enzyme complex that is stable at temperatures above 250 °F, such as those temperatures found in some wellbores and process streams. The xanthanase enzyme complex is produced by a novel soil bacterium. The xanthanase enzyme complex may be used to remove xanthan based formation damage, such as drilling filter-cakes and filtrates, or to remove xanthan based filter-cakes and/or residues present in processing equipment. The xanthanase enyzme complex may also be used to reduce the viscosity of xanthan-containing fluids, such as hydraulic fracturing fluids, blocking gels, drilling muds, and process fluids. The xanthanase enzyme complex may also be used in conjunction with other well or process treatments, such as stimulations and cementing operations, to improve the effectiveness of these treatments.
Patent CA-2285423-C (CA)
Inventor: SIMONS THEO JAN LEONARD WENCES
IPC: C07C69/54
Filed: 1998-04-02
Granted: 2007-01-02
Abstract: A process for the preparation of methacrylate esters, wherein (a) propyne is stripped in a distillation column from a solvant stream containing dissolved propyne, to afford a gaseous propyne stream that is subsequently condensed, and (b) the condensed propyne is contacted with carbon monoxide and an alcohol in the presence of a carbonylation catalyst, characterised in that the propyne is stripped in a distillation column that is equipped with an internal condenser to afford partial condensation for the supply of reflux.
Patent CA-2286707-C (CA)
Title: Method and system for accessing electronic resources via machine-readable data on intelligent documents
Inventor: HUNTER KEVIN
IPC: H03M7/42
Filed: 1998-05-09
Granted: 2006-06-06
Abstract: A method of accessing electronic resources via machine readable data embedded on a document which comprises compressing input data with a transmitter adapted to save a first bandwidth using a compression method adapted to minimize utilization of bandwidth by the compressed input data while retaining substantially all information content of the input data and appending a compression flag to the compressed input data indicative of the compression method enabling a receiver to decompress the compressed input data. The compression step further comprises utilizing a compression dictionary adapted to map the elements and strings of the input data to minimized representations having redundancies deleted. The compression dictionary may be appended to the compressed input data (as cleartext or cyphertext) under circumstances where a bandwidth occupied by the appended compression dictionary is less than the bandwidth saved by the step of compressing the input data. The compression dictionary may also be selected by the receiver independently from the transmitter independently indexes, pointer registration, application restricted subsets or customized according to the input data content. Also the input data may be encrypted, and an encryption flag appended which is indicative of the encryption methodenabling decryption via public or private key cryptosystems as well as utilizing various authentication techniques such as digital signatures to ensure that the document was created by a licensed user.