baber/WOPTO huggingface dataset:
Patent CA-2058733-C (CA)
Inventor: ANTHONY JAMES R
IPC: A44B11/25
Filed: 1992-01-03
Granted: 2001-04-17
Abstract: A seat belt buckle with a pair of buckle tongues. The buckle includes a spring mechanism movable within the buckle housing from a position blocking engagement of a latch when a single tongue is inserted to a position away from the latch when both tongues are inserted allowing the latch to engage the tongues. In one embodiment, a latch indicator is slidably mounted to the buckle push button in the buckle cover and includes a lower end contacting the latch. The indicator is movable from a position flush with the buckle push button when the latch is not engaged with the tongues to an upraised position over the button when the latch moves up and engages the tongues. The tongues have mating portions, but are separable.
Patent CA-2061481-C (CA)
Inventor: WEEKS RONALD J
IPC: A44B19/16
Filed: 1992-02-19
Granted: 1998-12-01
Abstract: A method and apparatus for producing an improved easy-open container wherein a continuous base layer is integrally extruded with means for gripping thereon and applied to existing film to seal perforated lines of tearing therein. Interlocking zipper elements are contemporaneously extruded and fused to the continuous base layer. Die clutter is reduced and the method produces a flexible container having desirable sealing, opening and gripping features.
Patent CA-2071356-C (CA)
Title: Antenna connector
Inventor: WRIGHT JOHN O
IPC: H01R13/05
Filed: 1992-06-16
Granted: 2001-09-04
Abstract: A male connector body for a radio antenna employs a plurality of compressible ribs to provide tactile feedback to an assembler. The ribs provide an insertion force that is less than a withdrawal force.
Patent CA-2073080-C (CA)
Title: Optical time-division multiplexing
Inventor: MOZER ALBRECHT
IPC: H04J3/04
Filed: 1992-07-03
Granted: 1999-11-16
Abstract: Optical time-division multiplexing of two or more digital optical input signals applied to an optical multiplex element to produce a single optical output signal is performed. In the multiplex element, the input signals are optically switched through in alternation, a through-switching time interval being shorter than the duration of a pulse of the input signal. An optical time-division multiplexer has at least one multiplex element to which at least two optical signals are input, the signals having carriers of different wavelengths. The signals are connected to an optical signal output via a junction. The signals can be switched through to the signal output in alternation by a switchable filter.
Patent CA-2076252-C (CA)
Title: Cryptographic protocol for secure communications
Inventor: BELLOVIN STEVEN MICHAEL
IPC: H04L9/32
Filed: 1992-08-17
Granted: 1998-08-25
Abstract: A cryptographic communication system. The system, which employs a novel combination of public and private key cryptography, allows two parties, who share only a relatively insecure password, to bootstrap a computationally securecryptographic system over an insecure network. The system is secure against active and passive attacks, and has the property that the password is protected againstoff-line "dictionary" attacks. If Alice and Bob are two parties who share the password P one embodiment of the system involves the following steps: (1) Alice generates arandom public key E, encrypts it with P and sends P(E) to Bob; (2) Bob decrypts to get E, encrypts a random secret key R with E and sends E(R) to Alice; (3) Alice decrypts to get R, generates a random challenge CA and sends R (CA) to Bob; (4) Bob decrypts to get CA, generates a random challenge CB and sends R (CA ,CB) to Alice; (5) Alice decrypts to get (CA ,CB), compares the first against the challenge and sends R(CB) to Bob if they are equal; (6) Bob decrypts and compares with theearlier challenge; and (7) Alice and Bob can use R as a shared secret key to protect the session.
Patent CA-2077481-C (CA)
Inventor: PRIGENT LAURENCE
IPC: H04B10/2543
Filed: 1992-09-03
Granted: 1996-10-01
Abstract: La présente liaison de communication optique avec correction d'effets non linéaires, et procédé de traitement d'un signal optique en question trouvent application lorsqu'une liaison comporte une ligne de transmission de grande longueur à fibre optique dans laquelle se produisent une dispersion de ligne de nature chromatique et des effets non linéaires. Selon cette invention, une fibre optique de compensation applique alors en sortie de ligne une dispersion de sens opposé et de valeur absolue inférieure à cette dispersion de ligne. L'invention s'applique notamment aux télécommunications intercontinentales.
Patent CA-2078319-C (CA)
Title: Control signal method and device
Inventor: HAUCK CHARLES E JR
IPC: G06F7/53
Filed: 1992-09-15
Granted: 2000-07-18
Abstract: A method and processor for evaluating numbers processes components of a pair of input numbers A, B in a plurality of identical gate structures. Each gate structure receives information from two bit positions and operates without carry information or any earlier computations to produce a conditional sum word. A control signal derived from the conditional sum word provides the same evaluation as the actual sum in fewer processing steps. A preferred embodiment produces the sticky hit for a rounding off unit in a floating point processor.
Patent CA-2082675-C (CA)
Title: Method and apparatus for scrambling and descrambling of video signals with edge fill
Inventor: RYAN JOHN O
IPC: H04H20/00
Filed: 1992-11-12
Granted: 1999-04-06
Abstract: A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment.  The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap.  Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal.  The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability.  NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.
Patent CA-2084358-C (CA)
Inventor: MIZUTANI SATOSHI
IPC: A61F13/539
Filed: 1992-12-02
Granted: 1997-09-23
Abstract: A  body  fluid  absorbent  article  comprising  a topsheet formed with tubular liquid passages extending from the bottom surface of the topsheet and an absorbent core, wherein  a  meshy  sheet  comprising  fibres  defining  meshes smaller  than  lower  openings  of  the  respective  liquid passages is  interposed  between  said  topsheet  and  said absorbent core so that said fibres extend across the lower openings.
Patent CA-2086620-C (CA)
Title: Anticalculus/antiplaque compositions using azacycloalkane diphosphonates
Inventor: SMITHERMAN HERBERT C
IPC: A61K8/55
Filed: 1991-07-11
Granted: 1997-10-14
Abstract: Azacycloalkane diphosphorates are used in combination with antimicrobials, especially 5-chloro-2-(2,4-dichlorophenoxy) phenol, to provide anticalculus and antiplaque benefits on teeth. Oral care compositions such as dentifrices, mouthwashes and the like, are provided.
Patent CA-2095676-C (CA)
Title: Preparation of compact or cellular elastomers containing urethane and urea groups, and moldings produced therefrom
Inventor: HINZ WERNER
IPC: C08J9/02
Filed: 1993-05-06
Granted: 1996-06-18
Abstract: Compact  or  cellular elastomers  containing  urethane  and  urea  groups  are prepared by reacting a)  at  least  one  organic  and/or  modified  organic polyisocyanate b)  at least one N-propoxylated polyoxyalkylene-polyamine containing at least 50% of secondary amino groups or a mixture of said N-propoxylated polyoxyalkylene-polyamines and polyoxyalkylene-polyamines containing 2 to 4 primary amino groups and having a molecular weight of from 1000 to 8000, c)  at least one alkyl-substituted aromatic polyamine having a molecular weight up to 500, in the presence or absence of d)  catalysts and, if desired, e)  blowing agents, f)  auxiliaries and/or g)  additives.
Patent CA-2096414-C (CA)
Title: Flue gas recirculation for no _reduction in premix burners
Inventor: DINICOLANTONIO ARTHUR ROBERT
IPC: F23C99/00
Filed: 1991-11-06
Granted: 1996-07-09
Abstract: A method and apparatus for reducing NOx emissions from premix burners by recirculating flue gas. Flue gas is drawn from the furnace through a pipe or pipes (36, 38, 56, 76) by the aspirating effect of fuel gas and combustion air passing through a venturi portion (19) of a burner tube (12). The flue gas mixes with combustion air in a primary air chamber (26, 78) prior to combustion to dilute the concentration of °2 in the combustion air, which lowers flame temperature and thereby reduces NOx emissions. The fluw gas recirculating system may be retrofitted into existing premix burners or may be incor-porated in new low NOx burners.
Patent CA-2097553-C (CA)
Title: Cooking appliance
Inventor: AOSHIMA TERUTAKA
IPC: F24C7/04
Filed: 1993-06-02
Granted: 2003-01-07
Abstract: A cooking appliance has a heater for cooking, and a switch which generating an operational signal. The cooking appliance automatically turns off the heater a predetermined time after a last pressed switch, i.e., automatic power off function. A caution lamp indicates that the heater will automatically be turned off a minute prior to the automatic power off function.
Patent CA-2097638-C (CA)
Title: Thermal type recording apparatus
Inventor: NAGANO FUMIKAZU
IPC: B41J2/35
Filed: 1993-06-03
Granted: 1998-08-25
Abstract: A thermal type recording apparatus performs printing at multi-tone density by changing an energizing time of a thermal head.  The apparatus has a controller for controlling the energizing time and a interrupting circuit. The controller controls the energizing time to match to a value corresponding to a tone density for printing. The interrupting circuit puts an interrupt period of energizing for the energizing time if the energizing time is equal to or more than a predetermined time.
Patent CA-2098289-C (CA)
Title: Distillation apparatus
Inventor: KOISTINEN PETER
IPC: B01D1/22
Filed: 1991-12-16
Granted: 2003-06-10
Abstract: The invention relates to.a distillation apparatus (1) which is suitable in particular far the distillation of sea water into fresh water. The apparatus com-prises a plurality of flat, bag-like elements (3) formed from a thin film material such as plastic film and placed one against the other; the elements serving as heat exchangers between a vaporizing liquid flowing along the exterior surfaces of the element and a condensing vapor directed to the inside of the element, and a compressor (15) for increasing the pressure and temperature of the generated vapor before it is directed to the inside of the elements. The essential idea of the invention is that the inside of each element (3) is divided into parallel vapor ducts. (12) extending vertically from one end of the element to the other, into which ducts the vapor is fed from apertures (25) at the upper edge of the ele-ment. At the upper end of each element (3) here may be a honeycomb-struc-tured end strip (4) which contains parallel ducts (25) separated from each other by partition walls; the. ducts feeding vapor to the inside of the element over the entire width of the element end. The strip (4) may also contain similarly formed ducts (26) which direct the liquid to be evaporated over the entire width of the element surface: At the lower end of the element there may additionally be a honeycomb-structured end strip (7) for collecting the produced distillate and for removing any unvaporized liquid.
Patent CA-2107580-C (CA)
Title: Containerization system
Inventor: GOUGE SAMUEL TERRY
IPC: A01G7/06
Filed: 1992-04-02
Granted: 2003-10-21
Abstract: The present invention relates to a containerization system comprising at least one inner cold water soluble bag (110) locat-ed within an outer cold water soluble bag (120). Each cold water soluble bag independently contains an agrochemical that does not substantially dissolve the bag, or bags, which it contacts, Typical agrochemicals are in solid, substantially non-aqueous liquid, or organic gel form. The inner bag contains an agrochemical such as plant protection compounds, pesticides, fungicides, insecti-cides, acaricides, nematocides; herbicides, plant nutrients or plant growth regulators. The outer bag contains agrochemicals such as penetrating agents, synergists, antidotes, sticking agents, spreaders, plasticizers.
Patent CA-2107804-C (CA)
Inventor: HARTMAN CHRISTINA L
IPC: A01N63/00
Filed: 1992-02-24
Granted: 2002-04-30
Abstract: This invention pertains to methods for using oxalate oxidase in plant pathology. A substantially pure gene encoding the oxalate oxidase enzyme is elucidated. The expression product of the gene which can be stably incorporated into a foreign plant host has a unique profile including a pH optimum of 3.5, a positive heat stability, a single sub-unit of approximately 25 kilodal-ions and protease stability. The methodology of this invention exploiting oxalate oxidase for protection against oxalic acid en-compasses providing to a plant in need of oxalic acid protection an oxalic acid degrading enzyme in an amount sufficient to pro-tect the plant from the oxalic acid.
Patent CA-2112072-C (CA)
Inventor: SCARFFE MICHAEL F
IPC: A61C19/04
Filed: 1993-12-21
Granted: 2005-01-11
Abstract: A probe element for probe apparatus such as a dental probe comprises a curved tubular sheath having a proximal end for connection to main body of the probe apparatus and an open distal end. A probe member slides within the sheath and has a proximal end.for connection to position sensing components in the probe apparatus main body and a distal end that protrudes by a variable extent from the open distal end of the sheath. Within the sheath the probe member is made up of a series of relatively large diameter beads joined by smaller diameter bridges to provide improved mobility of the probe member in the sheath even after prolonged storage.
Patent CA-2112145-C (CA)
Title: Speech decoder
Inventor: NOMURA TOSHIYUKI
IPC: G10L25/93
Filed: 1993-12-22
Granted: 1998-10-13
Abstract: The voiced/unvoiced frame judging unit 170 derives a plurality of feature quantities from the speech signal that has been reproduced in the speech decoder unit 140 in the previous frame.  Then, it checks whether the current frame is a voiced or unvoiced one, and outputs the result of the check to the second switch circuit 180.  The second switch circuit 180 outputs the input data to the bad frame masking unit 150 for voiced frame if it is determined in the voiced/unvoiced frame judging unit 170 that the current frame is a voiced one.  If the current frame is an unvoiced one, the second switch circuit 180 outputs the input data to the bad frame  masking unit 160 for unvoiced frame.
Patent CA-2112768-C (CA)
Inventor: FULLER TIMOTHY J
IPC: G03G9/08
Filed: 1994-01-04
Granted: 1999-10-19
Abstract: A toner composition comprised of pigment particles, and a resin comprised of a monomodal polymer resin or monomodal polymer resin blends and wherein the monomodal resin or resin blends possess a narrow polydispersity.
Patent CA-2114020-C (CA)
Inventor: SCHARF DAVID
IPC: H01J37/244
Filed: 1992-07-22
Granted: 1999-05-25
Abstract: A color synthesizing scanning electron microscope having a scanning primary beam of electrons directed toward a specimen (12), is configured to produce color images of high information content. The microscope comprises at least two wide energy bandwidth secondary electron detectors (14, 16, 18), arranged around the specimen at predetermined variable angles, for receiving electron emission from the specimen subsequent to incidence of the scanning primary electron beam. The wide energy bandwidth secondary detectors detect electrons with trajectory or positional differences and convert the positional differences to signals for synthesizing color. The signals from the wide energy bandwidth secondary electron detectors are combined to generate signals representative of different colors. Additional signals representing a difference between any two input signals from the wide energy bandwidth secondary detectors can also be generated.
Patent CA-2114401-C (CA)
Title: Motion vector processor for compressing video signal
Inventor: SAVATIER TRISTAN
IPC: H04N7/50
Filed: 1994-01-27
Granted: 2003-07-15
Abstract: A video signal compressor includes apparatus for generating motion vectors for respective blocks of video data.      Ones of the motion vectors (other than those which provide direction to co-located blocks in other frames) are determined to be candidates to conversion to vectors which do provide direction to co-located blocks. However, conversion is precluded if the vector is determined to be correlated with one of the neighboring motion vectors.
Patent CA-2115415-C (CA)
Inventor: PRIEST PAUL
IPC: A61M1/16
Filed: 1994-02-10
Granted: 2003-05-13
Abstract: An integrated blood treatment fluid module (10) for use in the treatment of renal failure comprises a support member (20) ; a blood treatment device (40) mounted on the support member (20) ; and, a plurality of fluid circuits (50, 60, 70, 80, 90, 100), such as a blood supply fluid circuit (50), a blood return fluid circuit (70), a waste fluid circuit (100), and an infusion fluid circuit (80), which are interconnected with the support member (20) and the blood treatment device (40) These circuits are disposed in a U-shape relative to the support member (20), with each U-shaped portion (54, 84, 94, 104) extending from the support member (20) for being adapted to cooperate with a peristaltic pump.      This blood treatment fluid module is universal.      Figure 1
Patent CA-2122405-C (CA)
Title: Power tools and hammer mechanisms therefor
Inventor: BOURNER MICHAEL DAVID
IPC: B25D16/00
Filed: 1994-04-28
Granted: 2002-01-29
Abstract: A hammer mechanism (200,200') for a power tool comprises a housing (203), a chuck spindle (201) journalled for rotation in the housing and having axial freedom of movement in the housing, a rotary ratchet (204) fixed on the spindle, the ratchet having teeth (207) facing a rear end of the housing, a fixed ratchet (205) rotationally fixed in the housing but having axial freedom of movement in the housing, the fixed ratchet surrounding the spindle and having teeth (207) facing the teeth of the rotary ratchet, and resilient biassing means (213) between said fixed ratchet and housing urging said fixed ratchet towards said rotary ratchet.      First cam means (208,209) between said fixed and rotary ratchets have two positions. In a first, said ratchets can engage one another, whereby reciprocal motion is imparted on the spindle on rotation thereof. In a second position said ratchets are prevented from inter-engagement.      Second cam means (224) between said fixed ratchet and housing have two positions. In a first, said fixed ratchet is axially locked and in a second position said fixed ratchet is permitted rearward movement against said biassing means.
Patent CA-2124028-C (CA)
Title: Directional actuator for electronic media navigation
Inventor: SMITH DEREK K W
IPC: G06F3/0483
Filed: 1994-05-20
Granted: 2000-07-25
Abstract: Complete navigation of electronic media through very fine movements of a pointing device by application of a directional actuator having a next page actuator, previous page actuator, and media movement actuator. Errors associated with coarse pointing device movement are removed, and the usable display area inside the window frame is increased. Complete navigation includes horizontal, vertical and diagonal movement with a gradient of speed.
Patent CA-2128895-C (CA)
Inventor: CROWELL JOHN M
IPC: F15B15/14
Filed: 1993-12-14
Granted: 1999-04-13
Abstract: A removable bore liner (30) is provided that substantially increases the dependability, flexibility and field serviceability of seismic vibrators (14) and other hydraulically actuated devices. A method for installing the removable bore liner (30) in a seismic vibrator (14) is also provided.
Patent CA-2130870-C (CA)
Inventor: MENARD HUGUES
IPC: C23C14/22
Filed: 1994-08-25
Granted: 2005-03-15
Abstract: Disclosed herein is a process of treating a particulate material, in which the particles are subjected to motion inside a chamber maintained under vacuum and wherein the vapour of a catalytic metal destined to coat the particles is present, the process comprising the steps of: a) effecting a high vacuum in the chamber; b) evaporating the catalytic metal by heating the catalytic metal; c) fluidizing the particles to be coated by placing the particles in an open container and shaking the container by connecting the container to a source of low frequency vibrations; wherein the particles are fluidized in the chamber and are contacted with the catalytic metal vapour which condenses onto the particles to coat the particles.      Further disclosed herein is an apparatus useful for carrying out the process of the present invention.
Patent CA-2136753-C (CA)
Inventor: SAURON JEAN
IPC: B29C65/20
Filed: 1993-05-28
Granted: 2004-10-26
Abstract: A method of butt-welding two tubular parts of plastics material is performed using an automatically controlled machine controlled by a computer unit. The two tubular parts to be welded, each bear an identification code of data related to characteristics of said tubular part, the data having been entered in an order and at specific positions for each code. The method includes the steps of scanning each identification code and acquiring said data stored within each of said identification codes. The acquired data is compared, datum by datum, to determine if a compatibility between said codes is recognized and a series of values common to said two parts is determined. The series of values is supplied to a welding program associated with the machine for processing the series of values in order to allow welding of said tubular parts with a heating element as a function of the series of values.
Patent CA-2144285-C (CA)
Inventor: KOMOROWSKI KARL JOSEPH
IPC: A47C3/20
Filed: 1995-03-09
Granted: 1997-03-18
Abstract: The chair of the present invention includes a power-assisted linear actuation drive mechanism having a lead screw nut which is linearly movable upon rotation of a power screw for selectively actuating the lift and tilt linkage mechanism for causing forward lifting and tilting movement of the chair when the motor is operated in a first direction. Rotation of the screw shaft in a second opposite direction acts to lower the chair to the normal seating position. Continued rotation in the second direction causes a first cam block pivotably mounted to the lead screw nut to engage a first follower assembly for causing extension of the leg rest assembly. Further rotation in the second direction causes a second cam block pivotably mounted to the lead screw nut to engage a second follower assembly for causing reclining movement of the chair. This sequential operation of the leg rest assembly and the reclining linkage are independent and may be easily disabled to selectively eliminate either of the features.