baber/WOPTO huggingface dataset:
Patent CA-2060181-C (CA)
Inventor: WAGGENER ROBERT G
IPC: G06T1/00
Filed: 1990-08-03
Granted: 2000-01-18
Abstract: Apparatus and method for mounting on an existing x-ray simulator and calculating a back projected computed tomographic image. The detector array (26) is linear and outputs signals from the photodiodes mounted therein to a preprocessor (32) for smoothing, correcting and filtering and subsequent processing to transform the signal from that produced by an x-ray originating from a fan beam source (12), e.g., in a polar coordinate system, into the signal which would have been produced by a detector in an array on which a parallel beam is incident on a cartesian coordinate system. The transformed data is converted to a gray scale value for a picture element having a specific position in the cartesian coordinate system and output to an appropriate display. Data is taken at each incremental angle as the beam source (12) and detector array (26) rotate around a target object (18). The method of reconstructing this back projected image involves correcting and smoothing the output signals, scaling those corrected and smoothed signals, and convolving the scaled signals into data characterizing the ray which is incident on each individual detector element into the equivalent intensity data had the incident ray originated from a parallel beam source. Also provided are methods for correcting the data for incorrect detector readings and for displacement of the detector array (26) resulting from the off-center rotation of either or both of the x-ray source (12) or the detector array (26).
Patent CA-2060828-C (CA)
Title: Pressure reduction foam mattress support
Inventor: KROUSKOP THOMAS A
IPC: A47C27/14
Filed: 1992-02-07
Granted: 1995-02-14
Abstract: A foam mattress support having a top, intermediate and bottom layer. The intermediate layer includes a plurality of ribs having a cross-sectional area increasing in the direction perpendicular to the pad, the height of the ribs being at least as great as one-third of the thickness of the pad, and the cross-sectional area of the ribs at the head and foot end being substantially equal but being less than the cross-sectional area of the ribs between the head and foot ends.
Patent CA-2061107-C (CA)
Title: Organopentasiloxane and method for its preparation
Inventor: OKAWA TADASHI
IPC: C07F7/18
Filed: 1992-02-12
Granted: 1998-09-22
Abstract: An organopeutasiloxane having the formula A-R1-SiMe2(OSiMe2)3OSiR2(3~n )(OR2)n wherein Me denotes a methyl radical; A is a group selected from the group consisting of methacryloxy, glycidoxy and amino; R1 is a divalent organic group selected from the group consisting of all alkylene group having at least 2 carbon atoms and an alkyleneoxyalkylene group; R2  is independently selected from monovalent hydrocarbon groups free of aliphatically unsaturated bonds; and n is an integer having a value of 1 to 3, and methods for the preparation thereof, are disclosed.
Patent CA-2063037-C (CA)
Title: Multi-channel echo canceling method and apparatus
Inventor: HIRANO AKIHIRO
IPC: H04B3/23
Filed: 1992-03-13
Granted: 1996-04-02
Abstract: Echo   canceling   method   and   apparatus   for subtracting, from a mixed signal in which echoes produced from a plurality of reception signals are mixed with a transmission signal, a replica of the echoes in order to cancel the echoes in the mixed signal.  The replica of the echoes is generated by the steps of selecting the reception signal which is leading in phase and producing a replica of the echoes from the selected reception signal by an adaptive filter.   Generally, the replicas are produced by adaptive filters provided in one-to-one correspondence with the mixed signals.
Patent CA-2063066-C (CA)
Title: Protective catheter device
Inventor: KAUFMAN JERRY M
IPC: A61M25/06
Filed: 1992-03-13
Granted: 1996-07-09
Abstract: Protective  catheter  devices  are  disclosed including a barrel for housing a catheter including a needle extending therefrom.   The catheter is slidably retained within the barrel between a fully retracted position and an extended position, in which the needle can be inserted into a patient, and the device includes a locking mechanism for controlling the position of the needle within the barrel, which includes at least two positions; namely, a first position in which the needle is  freely  slidable  within  the  barrel  and  a  second position in which the needle is locked in its retracted position within the barrel, such that the needle cannot be  displaced  from  its  retracted  position  without repositioning the locking mechanism.
Patent CA-2077893-C (CA)
Title: An equivalent network interface module for connecting a programmable logic controller to a high speed communications network
Inventor: BRONIKOWSKI JOSEPH T
IPC: G06F13/12
Filed: 1991-03-21
Granted: 2000-08-22
Abstract: A programmable logic controller (21) has an equivalent network interface module (35) for permitting direct communicative coupling of the programmable logic controller (21) to a data communication network (23), such as Ethernet. The equivalent network interface (35) contains a mailbox register (39) for holding messages and a communications processor (37) for controlling the operations of the equivalent network interface (35) while the remaining section of the programmable logic controller (21) contains a control processor (31) for regulating the operations of the controller (21), a scan processor (33) for scanning the controller's (21) ladder program and an image table (32) for holding data used by the scan processor (33).
Patent CA-2078776-C (CA)
Title: Dental compositions and methods for treating teeth surfaces
Inventor: FISCHER DAN E
IPC: A61K6/90
Filed: 1991-03-18
Granted: 1995-11-21
Abstract: The present invention discloses high viscosity sustained release dental compositions, such as tooth bleaching or fluoride compositions, for treating tooth surfaces. For maximum results, an improved dental tray (22) having reservoirs for holding the dental composition adjacent the desired tooth surfaces is preferably used in combination with the sustained release dental compo-sition. The sustained release dental compositions include a high carboxypolymethylene concentration which results in very high viscosity. The high level of carboxypolymethylene makes dilution of the dental compositions from saliva difficult and time con-suming so that the compositions stay within the tray reservoirs, thereby providing sustained release. The concentrated carboxypol-ymethylene adds a unique tackiness to the dental composition which helps retain and seal the soft tray material against the pa-tient's teeth.
Patent CA-2087048-C (CA)
Title: Derivation of vt group clock from sonet sts-1 payload clock and vt group bus definition
Inventor: LAGLE HUGH ANDREW III
IPC: H04J3/16
Filed: 1993-01-11
Granted: 1999-02-23
Abstract: A SONET formatter circuit (10) receives a parallel STS-1** TX signal (19) from a highspeed interface module.          The STS-1** TX signal (19), which contains a floating VT group payload, is demultiplexed into seven parallel VT groups (33).  These seven parallel VT groups (33) are converted to serial by a parallel to serial converter (34) and transmitted serially to lowspeed interface modules as DEMUX direction VT group data signals (42, 43).  The SONET formatter circuit (10) also receives serial MUX direction VT group data signals (68, 69) from lowspeed interface modules.  These serial VT group data signals (68, 69) are converted to seven parallel VT groups (89) by a serial to parallel converter (64).          These seven parallel VT groups (89) are multiplexed with overhead data (84) into a parallel STS-1** RX signal (50) which is transmitted to a highspeed interface module.  To maintain continuous VT group frame transmissions, a VT group clock generation circuit (72) is required.
Patent CA-2087589-C (CA)
Title: Decorative glass
Inventor: MEYMAND DARLENE K
IPC: B44F1/08
Filed: 1991-07-19
Granted: 2002-01-01
Abstract: A sheet of decorative glass (10) for forming an artistic light pattern on a surface proximate to the glass. One surface of the glass sheet (14) comprises a plurality of facets (16), each of which is associated with several other facets so as to form a projecting section (17). Each of these facets is designed to refract incident light so a.  to form a light pattern having a discrete, readily obser-vable geometric pattern. Under certain lighting conditions, the light pattern will include a color distribution comprising some or all of the visible color spectrum.
Patent CA-2088901-C (CA)
Title: Apparatus for storing and preserving food products and for selectively dispensing the food products from the apparatus
Inventor: HALL CHARLES E JR
IPC: B65D25/16
Filed: 1993-02-04
Granted: 1997-01-14
Abstract: The present invention provides an apparatus for storing and preserving food products and for selectively dispensing the food products from the apparatus, wherein the apparatus comprises a container, a flexible bag in-serted into and suspended in the interior of the contain-er, and a cover member releasably securable over a top opening of the container.  The bag is provided with a sidewall dimensioned to slide vertically through the interior of the container without the sidewall exerting a friction force against the inner surfaces of the contain-er sidewalls with the bag filled with a food product. The bag is constructed of a flexible material that en-ables a top portion of the bag sidewall to be stretched and folded back over the top opening of the container and the outer surfaces of the container sidewalls to suspend the food product container in the bag inside the contain-er interior and above the container bottom wall.  By selectively sliding the folded over portion of the bag vertically downward and upward over the exterior surface of the container sidewalls, the food product contained inside the bag and suspended in the container interior is raised up in the container to the top opening of the container and is lowered in the container toward the bottom wall of the container.
Patent CA-2092447-C (CA)
Title: Dead bolt device
Inventor: FLORIAN DAVID W
IPC: E05B9/08
Filed: 1993-03-25
Granted: 1998-01-06
Abstract: A lock is disclosed which includes a housing having an inside bore, a cylinder selected from a group consisting of interchangeable core cylinders and insert cylinders, the cylinder having an outer contour, the inside bore of the housing being at least as large at any point as the outer contour of the cylinder, and a device for adapting the inside bore of the housing to correspond to the outer contour of the cylinder.  Also described is a transmission assembly mounted to the housing and cooperating with the cylinder to impart desired motion to a latch mechanism of the lock.  An advantage of the lock is that it may accommodate distinctively different cylinder types with different form, fit and function.
Patent CA-2092809-C (CA)
Title: Multiple component structural member
Inventor: GOLEBY LESLIE DAVID
IPC: B21D5/08
Filed: 1991-09-25
Granted: 2001-11-06
Abstract: A novel method is provided for the continuous formation of a structural member having at least one web element and at least one hollow flange element extending longitudinally of an edge of the web element. The method includes the steps of cold roll forming a first continuous strip of metal to form the at least one hollow flange element, the free edges of the hollow flange element being spaced to form a continuous aperture therein. A second continuous strip of metal is then guided between the free edges and at least partially into the aperture. The free edges are then continuously fused to opposed faces of the web element by high frequency electrical induction welding, or by electrical resistance welding.
Patent CA-2093252-C (CA)
Title: Low noise frequency synthesizer using half integer dividers and analog gain compensation
Inventor: ARNOLD KEITH P
IPC: G01S7/285
Filed: 1993-04-02
Granted: 1996-08-06
Abstract: A low noise frequency synthesizer 10 that uses uses frequency dividers 13, 15, at least one of which(divider 15) is incrementable and decrementable in half integer steps, and analog gain compensation in a phase/frequency detector 17 to achieve lower noise, lower spurious levels and faster switching speed than traditional methods of frequency synthesis. The key features of the present invention are its half integer dividers 13, 15 and the ability to adjust the phase detector gain to compensate the loop for varying divide numbers. The synthesizer 10 comprises two dividers 13, 15 that provide two reference frequency signals that are a function of an input signal and an output signal of the synthesizer 10.  A voltage controlled oscillator (VCO) 18 provides the output signal (fO) of the frequency synthesizer 10.  A phase/frequency detector 17 compares the reference frequency signals and provides a phase error output signal that drives the VCO 18. A digital controller, comprising a PROM 11 and a digital to analog converter 12, adjusts the gain of the phase detector 17 to compensate for varying divide numbers, and selects the divide numbers. The synthesizer 10 has lower phase noise, lower spurious levels and faster frequency channel switching. To generate a frequency step of a given size, the divide number is half the step size. With a divide number of half the step size, the noise contribution from the divider is reduced by that much. The phase margin is improved with a corresponding reduction in loop peaking in the noise spectrum. A missile radar system employing the present synthesizer is also disclosed.
Patent CA-2093264-C (CA)
Title: Limb protector
Inventor: SKOTTHEIM LEIF
IPC: A63B71/12
Filed: 1993-04-02
Granted: 1998-07-14
Abstract: The present invention relates to an articulated limb protection system and device for use in sports events such as ice hockey, street hockey, roller hockey and the like.  The system or device comprises a buffer pocket which is disposed between an outer joint guard means and an inner joint guard means.  The inner joint guard means is articulately connected to an adjacent limb guard means so that the inner joint guard means pivots relative to the limb member in response to bending action of the protected limb about the covered joint.
Patent CA-2102565-C (CA)
Inventor: SASAKI YUTAKA
IPC: H04B1/40
Filed: 1993-11-05
Granted: 1998-09-15
Abstract: In a radio communication apparatus which uses a common carrier frequency on transmission and reception operations selectively carried out in the apparatus, a frequency divider is located between a modulator operated by a predetermined modulation frequency and a modulating local oscillator which oscillates a modulating frequency equal to an integral multiple N of the predetermined modulation frequency.  The frequency divider has a frequency division factor equal to N and supplies a frequency divided signal of the predetermined modulation frequency to the modulator during the transmission operation under control of a control circuit.  During the reception operation, the frequency divider is put into an inactive state by the control circuit to isolate the modulating local oscillator and the modulator.
Patent CA-2105365-C (CA)
Title: Method of hot brazing aluminum articles
Inventor: SATO SHOICHI
IPC: B23K3/04
Filed: 1993-09-01
Granted: 2005-08-02
Abstract: In a method of hot brazing aluminum articles, the steps of: interposing an amount of a flux-containing brazing agent (12) between portions of aluminum articles (11, 11) which are to be adjoined one to another; gripping the portions with a pair of heaters (13); and then activating the heater so that heat conducted therefrom melts the brazing agent (12) to braze the aluminum articles (11), are carried out in this order. The brazing agent (12) is a compacted agent composed of a matrix powder and a flux powder, at a ratio in weight of 99.9 : 0.1 to 70 : 30, and the agent has a density corresponding to 90 % or more of a theoretical value. The articles (11) may be pressed one to another towards adjoining surfaces while they are being heated by the heater (13), or the heaters (13) are slided relative to the adjoining portions so that they are heated wholly, or the adjoining articles (11, 11) are urged towards each other while the heaters (13) are being slided relative to them so as to entirely heat them, so that the brazing is carried out efficiently to manufacture brazed products which are of a higher brazing strength.
Patent CA-2105601-C (CA)
Inventor: WIGLEY CHARLES L SR
IPC: E05C19/18
Filed: 1993-09-07
Granted: 1998-09-22
Abstract: A doorstop including an elongated shaft slidably and rotatably received within a receptacle seated in a floor proximal a door. The shaft extends vertically from the receptacle and has a cross-member integrally connected thereto and extending therefrom in opposing lateral directions such that the door, when opened toward the shaft, will contact the cross-member and rotate the cross-member into planar contact with the door. Thus, the movement of the door will be limited by the shaft and laterally extending cross-member. In a separate embodiment, end portions are integrally connected to the cross-member which project generally horizontally therefrom. When the end portions are facing or protruding toward the door, movement of the door from its closed position is completely obstructed. This embodiment functions as the original embodiment described above when the end portions are facing away from the door. A rigid plate may be connected to the door to protect the door from damage from the cross-member and shaft and, further, to distribute the force placed on the door over a larger surface area thereof.
Patent CA-2106603-C (CA)
Inventor: MIYAMORI MASAHIRO
IPC: B60R21/01
Filed: 1993-09-21
Granted: 1997-09-16
Abstract: In a crash detection apparatus, the output signal of an accelerometer is integrated at intervals and a velocity signal is produced. Those frequency components of the accelerometer output which appear uniquely during a vehicle crash are extracted and their amplitude is squared to produce an impact energy signal. An airbag is operated when the velocity signal exceeds a first threshold, or when a sum of the velocity and impact energy signals exceeds a second threshold, or operated when the impact energy signal exceeds a third threshold. In a modified embodiment, the accelerometer output is integrated both at longer and shorter intervals to produce a long-term and a short-term velocity signal. The airbag is operated when the long-term velocity signal exceeds a first threshold, or when the short-term velocity signal and the impact energy signal simultaneously exceed a second and a third threshold, respectively.
Patent CA-2109740-C (CA)
Title: Security module
Inventor: MOSES LEONARD CALVIN
IPC: G07C9/00
Filed: 1993-11-23
Granted: 2000-06-20
Abstract: A security system including a security module positioned so that personnel traveling from a first zone to a second zone pass through the module for identification and verification of access. The module includes a card reader on one wall for reading an identification card inserted by the personnel, a scale for weighing personnel within the module, sensors for measuring the height, girth, position and direction of movement of personnel passing through the module, and video cameras for viewing such personnel. Information relating to whether the card is used properly, whether the card is correct and valid, whether issued to the person carrying the card and whether the person should be traveling between the zones at that time is determined and alerts provided when violations occur. The scale includes a floor plate suspended within the module. The sensors are infrared detectors connected within panels forming the interior walls of the module which are removably connected to the frame of the module by rods carried by the frame and selectively rotatable for receipt and locking within slots in brackets secured to the panels. Video cameras are concealed within end caps at the entry and exit ends of the wall on which the card reader is mounted and unobtrusively view personnel through one-way mirrors.
Patent CA-2110892-C (CA)
Inventor: SOBHANI MOHI
IPC: H01R12/71
Filed: 1993-12-07
Granted: 1997-03-25
Abstract: A pair of electrical circuits (20, 22), which may be both flexible or one flexible and one rigid, are interconnected by projections, such as bumps (24) and rings (26). The projections are formed from substantially inelastic dielectric material, such as an epoxy, defining bumps (34) and rings (36), which are plated with copper (38). Projections (24, 26) of one circuit are disposed to interconnect with mating projections on the other circuit, the interconnection being bump to bump, bump to ring, or bump to pad. The projections may be formed on a copper-clad substrate (42) or on plated-through holes (72) on a printed wiring board (70). Alternately, polygonal pads (94) on a circuit (90) may be joined to a projection. Further, a plurality of bump projections (106), electrically connected to the same or different circuits, may collectively interconnect with a single oval ring projection (108).
Patent CA-2121651-C (CA)
Title: Track and rail-form slider combination
Inventor: DOHERTY DARRELL
IPC: B61B3/00
Filed: 1994-04-19
Granted: 1999-11-30
Abstract: A track and rail-form slider combination is described which includes a rail-form slider having a top surface, a bottom surface, and sides extending between the top surface and the bottom surface. Pour corners are formed where the top surface meets the sides and the bottom surface meets the sides.      A track is provided which includes a plurality of roller supports. At least four rollers are secured to each roller support. Each roller engages the rail-form slider solely at one of the corners.
Patent CA-2130780-C (CA)
Inventor: SIVILOTTI OLIVO G
IPC: C25C3/04
Filed: 1994-08-24
Granted: 2000-01-25
Abstract: A process for electrolytically producing magnesium metal from MgCl2 dissolved in an electrolyte, by conversion to the product metal and chlorine gas, wherein the MgCl2 content of the electrolyte is replenished by supplying thereto a feed having as components one or more magnesium chloride ammoniates for decomposition by the heat of the electrolyte into MgCl2 and ammonia gas. The feed, which may also include uncombined MgCl2, is delivered to the electrolyte at a location at which the generated ammonia does not come into reactive contact with the chlorine gas. The temperature of the electrolyte as well as its MgCl2 content can be controlled by selection of feed components, relative proportions, and rate of supply. The ammoniate content of the feed can be produced by reaction of ammonia with magnesium chloride hydrates, using the ammonia gas generated by the decomposition.
Patent CA-2132158-C (CA)
Title: Carpet wheel for a rotary cleaning apparatus
Inventor: CONNELLY WALTER
IPC: A47L11/34
Filed: 1994-09-15
Granted: 1997-12-23
Abstract: A carpet wheel is provided for a rotary cleaning apparatus of the type having an electric motor in a housing, a brush member attached to a drive shaft of the motor, a holding tank for a liquid cleaning fluid and a handle extending at an angle upwardly from the holding tank.   The carpet wheel comprises a circular shaped base member.  Elements are on the base member in a pattern, for forming a plurality of radially extending grooves.  The groove forming elements can be releasably positioned against the underside of the brush member, to be rotated thereabout.  A plurality of balls are also provided.          A structure is for rotatively carrying the balls in the base member, in spaced apart radially extending locations under every other groove, so that the balls will contact and roll upon a carpet.  Components are in the base member in every other groove between the grooves with the balls, for allowing the liquid cleaning fluid coming down from the brush member to pass therethrough, to lubricate the balls, so as to evenly apply the liquid cleaning fluid into the carpet to be cleaned.