baber/WOPTO huggingface dataset:
Patent CA-2043725-C (CA)
Title: Safety helmet for cyclists
Inventor: GARNEAU LOUIS
IPC: A42B3/12
Filed: 1991-05-31
Granted: 1997-08-26
Abstract: The safety helmet comprises hard inner and outer shells and a shock-absorbent insert.  The inner shell forms at its lower edge  and  on  the  outside thereof an upwardly-opening trough in which the insert is inserted. The free edge  of the  trough joins with the  lower edge  of the  cuter shell above the bottom of the trough.    The  two  shells,  together  with  the   insert,  form ventilation  openings  which  are  lined  by  portions of the two shells.
Patent CA-2044197-C (CA)
Title: Calorimeter
Inventor: NUKUI KAZUMITU
IPC: G01N33/22
Filed: 1991-06-10
Granted: 1997-03-04
Abstract: A calorimeter comprises a laminar flow type flowmeter for measuring the volume of flow of a fuel gas as a value proportional to the difference between the pressures of the laminar flow elements and a stream pipe serially connected to the laminar flow type flowmeter to create a laminar flow therethrough. The stream pipe is provided with a heating means,  a  temperature  sensing  means  for  detecting  the difference between the temperatures of the fuel's flow to and  from the  stream pipe portion heated by the heating means,  and a thermal-type flowmeter for measuring a mass flow proportional to the differential temperature sensed.          A computer unit calculates  the outflow pressure  and the volume of flow of the fuel gas in its normal state from the measured values of the absolute pressure, the differential pressure and the temperature of the fuel gas flowing into the laminar flow-type flowmeter and calculates the calorific value  of  the  fuel  gas  as  a  value  that  is  negatively proportional to the differential pressure.
Patent CA-2046819-C (CA)
Inventor: SCHOEPE ADOLF
IPC: F16K31/60
Filed: 1991-07-11
Granted: 1995-06-27
Abstract: A faucet handle assembly is described for replacing a handle on a faucet valve stem, which can mount on a wide variety of types of stems.  The assembly includes a pair of jaws (30, 32, Fig. 1)  having  inner  surfaces  for engaging opposite  sides of the periphery (22) of the valve stem and having outer camming surfaces (42, 43) that can be pushed together.  The assembly also includes a faucet handle (12) with a hole in the top for passing a screw (28) that screws into a threaded hole of the valve stem, and having a cavity (44)  for receiving the jaws.   The cavity has camming surfaces (54, 56) that engage the jaw camming surfaces, so as the screw is tightened the jaws are pressed tightly against the valve stem peripheral surface.
Patent CA-2048088-C (CA)
Title: Method for gravel packing wells
Inventor: YEH CHARLES SHIAO-HSIUNG
IPC: E21B43/04
Filed: 1991-07-29
Granted: 2001-09-18
Abstract: A method for gravel packing perforations against homogeneous or heterogeneous reservoir formations utilizing a shear-thickening or dilatant fluid as the carrier medium of gravel. Use of this fluid provides for rheological behaviour which improves both transporting and packing efficiencies/ uniformities.
Patent CA-2052470-C (CA)
Title: Composite lightweight beam for a freestanding display or the like
Inventor: KRAPF WALLACE A
IPC: G09F7/20
Filed: 1991-09-30
Granted: 1994-10-25
Abstract: A lightweight beam construction having a section formed of a pair of plates which are interconnectable between channel sections or useable alone. The central section includes reenforcing material such as corrugated honeycomb material extending between top and bottom plates, or the central section may include an H-beam reenforcing member extending between the side walls of the central section.
Patent CA-2052630-C (CA)
Title: Method and device for laying access floors, and access-floor support
Inventor: MUEHLETHALER ERHARD
IPC: E04F21/20
Filed: 1991-10-02
Granted: 1994-11-01
Abstract: To simplify and speed up the laying of access floors formed of floor panels (6) laid on supports (5) set out in a regular pattern, an ancillary plane (4) extending over a field (3) of grid points (2) is levelled up at a distance from the subfloor or structural slab (1). A device (10) with a frame (11) and outriggers (12) is used to define the ancillary plane, to hold temporarily a multiplicity of supports (5) and introduce them simultaneously. The supports are then simultaneously adjusted in height and fixed on the grid points (2) in accordance with the respective distance between the ancillary plane and the (uneven) subfloor (1). The supports are then released from the device (10), the device is removed, and the panels (6) are laid on the accurately positioned head pieces of the supports.            Various embodiments of the method, the device (10), and parti-cularly suitable prefabricated supports (5) are described. In the latter, the head piece and base are loosely guided relative to each other and can be moved axially relative to each other without the need of rotating either the head piece or the base. After height adjustment of the supports, means of retention and fixation are used to fix the relative position of the parts to each other.
Patent CA-2058769-C (CA)
Inventor: KRILIS STEVEN ANTHONY
IPC: G01N33/92
Filed: 1991-04-04
Granted: 1999-03-02
Abstract: A method for determining whether antiphospholipid antibodies present in autoimmune diseases are present in a sample is disclosed. The method comprises contacting the sample with a negatively charged phospholipid and with .beta.-2-glycoprotein-I and determining whether any antiphospholipid antibodies have bound to the contacted phospholipid and .beta.-2-glycoprotein-I wherein detection of binding of antiphospholipid antibodies to the phospholipid and .beta.-2-glycoprotein-I is indicative that antiphospholipid antibodies present in autoimmune diseases are present in the sample. Also disclosed is a method for determining whether anticardiolipin antibodies present in autoimmune diseases are present in a sample, a kit for use in an assay for determining whether antiphospholipid antibodies present in autoimmune diseases are present in a sample, and a kit for use in an assay for determining whether anticardiolipin antibodies present in autoimmune diseases are present in a sample.
Patent CA-2061832-C (CA)
Title: Speech parameter coding method and apparatus
Inventor: OZAWA KAZUNORI
IPC: G10L19/16
Filed: 1992-02-25
Granted: 1996-04-30
Abstract: A speech parameter coding method and apparatus which can quantize a spectrum parameter of a speech signal with a smaller number of bits than ever.  A dividing section divides a predetermined order number of spectrum parameters, obtained by division of a speech signal into frames, for each order number of spectrum parameters smaller than the divisional order number.  A vector quantizing section searches codebooks for the divided spectrum parameters for each order number and outputs a plurality of candidates of codevector in order of magnitude from the minimum one.  An accumulated distortion calculating section calculates accumulated distortions for the entire order number for combinations of codevectors.  A minimum judging section selectively outputs a combination of codevectors which minimizes the accumulated distortion thereby to quantize the spectrum parameter.
Patent CA-2064921-C (CA)
Title: Signal transmission system
Inventor: RICHARDSON ANDREW JAMES
IPC: H04B7/26
Filed: 1992-04-02
Granted: 2000-07-18
Abstract: A signal transmission system, for example a TDMA system, in which a carrier as divided into a plurality of traffic signal time slots, with optionally, same regularly interspersed control signal time slots. In order to be able to provide flexibility in the symbol rates and/or modulation schemes used by complementary users, the traffic signal time slots have one of at least two predetermined durations. However irrespective of the duration(s) of the traffic signal time slots, the number of symbols per traffic signal time slot remains substantially the same.
Patent CA-2064980-C (CA)
Title: Method of controlling the operation of a packet switched cdma communication network for controlling the operation of transmitters and receivers
Inventor: CHEN XIAO HUA
IPC: H04J13/00
Filed: 1992-04-02
Granted: 1997-05-13
Abstract: A  method  of  controlling  the  operation  of  a packet switched CDMA telecommunication network for controlling the operation of transmitters and receivers.  The terminals of network users (Ui,j) communicate with other terminals (Uj, i) via a CDMA channel,  and the terminal of each user is assigned a receiver code (ri,j) and a transmitter code (ti,j) used by the terminals for encoding packets to the other terminals of the network. To improve the performance of the network, the terminals sense the channel for the presence of the receiver codes (ri,j) and/or the transmitter codes (ti,j) at the different stages of the connection establishment, and the trans-mitting terminal  (TERi)  transmits encoded re-quest packets (REQ) and data packets (DAT) to the channel on the basis of the sensing proced-ure, and the other communicating party, i.e. the receiving terminal (TERj), receives said encoded packets  and  transmits  encoded  acknowledgement packets  (ACK)  and  busy  tone  packets  to  the channel.
Patent CA-2067704-C (CA)
Inventor: GILLETT COLIN
IPC: A61L9/03
Filed: 1992-04-30
Granted: 2002-12-17
Abstract: An apparatus (10) for emitting a chemical agent such as a fragrance or an insecticide comprises a container (46) for the agent sealed by a temperature sensitive semi-permeable membrane (50). A heater (22) is provided in the apparatus for heating the chemical agent to facilitate the release of the chemical agent through the membrane (50). The container (46) and heater (22) are relatively movable so as to vary the emission of the chemical agent through the membrane (50).
Patent CA-2074368-C (CA)
Inventor: DOWNTON CHRISTOPHER MARK
IPC: F02B75/32
Filed: 1991-02-21
Granted: 2002-05-28
Abstract: Reciprocating elements such as pistons ( 17) in a pair of opposed cylinders are connected to a crankpin (16) of a crank-shaft by respective connecting links (18) having flat guide sur-faces (24) engaging bearing pads (31) on a drive block (28) ro-tatably mounted on a crankpin (16). The two connecting links (18) are rigidly interconnected and reinforced by four U-shaped connecting plates (19) which are secured to the connecting links by screws (35) at spaced intervals and have longitudinal ribs en-gaged in grooves (34) of the connecting links (18). The connect-ing plates (19) also form lateral guides (36) for the drive block.        In variants, connecting plates are formed integrally with one or more connecting links.
Patent CA-2076883-C (CA)
Title: Shared-tenant services arrangement providing numbering-plan independence and cross-plan access to tenant groups
Inventor: BOGART FRANK JEFFREY
IPC: H04Q3/58
Filed: 1992-08-26
Granted: 1996-08-27
Abstract: In a shared-tenant services arrangement, numbering-plan independence and cross-plan access is provided to tenant groups by a call-processing arrangement that stores separate definitions of both syntax and grammar of each group's own extension numbering plan. In response to receipt from a member of an individual tenant group of an extension number unaccompanied by a network dial-access code (DAC), the received extension number is analyzed using the syntax and grammar definitions of the extension numbering plan of the individual group. But in response to receipt from the member of the extension number accompanied by a DAC, the DAC is analyzed using the syntax and grammar definition of the extension numbering plan of the individual group to determine an extension numbering plan that corresponds to the received DAC, and the received extension number is then analyzed using the syntax and grammar definitions of whichever extension numbering plan corresponds to the received DAC.
Patent CA-2080248-C (CA)
Title: High density stacking flex chair
Inventor: PERRY CHARLES O
IPC: A47C3/023
Filed: 1991-04-03
Granted: 1996-10-29
Abstract: A high density stacking flex chair is disclosed. A one-piece frame (10) has a seat portion (20) attached thereto, and a back portion (30) pivotally attached thereto. The back portion (30) is curved and can tilt backwards, but is limited by the frame (10) which, through the back portion (30), has a lesser radius of curvature and is angled downward, thus providing stop action for back portion rotation.
Patent CA-2095512-C (CA)
Title: Hinge binder device
Inventor: MULLIN HOWARD
IPC: B42F13/06
Filed: 1993-05-04
Granted: 1997-01-28
Abstract: Disclosed herein is a hinge binder device for retaining paper goods and the like. The device includes an anchoring member for retaining the goods a locking member for releasably locking the anchoring means.  The locking member includes a support member, a wing member, and a hinge for pivotally connecting the support and wing member. Additionally, the locking mechanism includes a release for releasably locking the support and wing members. The anchoring member has leg portions for retaining the good and the leg portions are adapted for compatible fit between the wing and support members.
Patent CA-2096557-C (CA)
Inventor: CHENE RICHARD
IPC: F16B2/08
Filed: 1993-05-19
Granted: 1999-12-14
Abstract: This invention relates to a hose clamp constituted by a band of material, generally metal, wound on itself, one of the ends of said band presenting relief elements forming a rack, whilst on the other end is fixed a housing which constitutes the support of a screw which is mounted to pivot about its axis, said screw abutting on a stop axially mobile with respect to the housing against the action of a spring. The spring is constituted by a curved blade, for example in the form of a semi-circle, whose concavity faces the inside of the clamp and whose ends are laterally in contact with the sides of the housing.      A first end of said blade is axially fixed to the housing and provided with an opening in which the tail of the screw may slide, whilst the second end of the blade surrounds at least partially the shank of the screw in the vicinity of its head and is mounted to slide with respect to the sides of the housing.
Patent CA-2099334-C (CA)
Title: Injection molding insert with melt inlet and pin aligned
Inventor: GELLERT JOBST ULRICH
IPC: B29C45/27
Filed: 1993-06-25
Granted: 2001-09-11
Abstract: Injection molding apparatus with a number of spaced inserts removably seated in a heated melt distribution manifold. Each insert is seated in a transverse opening through the melt distribution manifold in alignment with a heated nozzle. The insert has a melt duct with a smoothly curved bend extending through 90° to an outlet in matching alignment with a melt bore extending centrally through the nozzle. The insert has an alignment pin which extends outwardly through a matching aperture in the melt distribution manifold into an opening in the mold to both align the insert in the manifold and locate the manifold in the mold. The alignment pin bore is positioned opposite from and in alignment with the inlet to the melt duct so alignment of the melt duct inlet in the insert with a respective branch of a melt passage in the manifold is very accurate.
Patent CA-2103629-C (CA)
Inventor: PRYBA STANLEY J
IPC: F01L1/18
Filed: 1993-08-09
Granted: 2003-12-30
Abstract: A one-piece, cold-formed rocker arm is of the boat-type.      It includes a one-piece metal body which is cold formed from a metal blank and is of generally U-shaped cross-sectional configuration throughout most of its length. The rocker arm body has two generally parallel side walls and a connecting bottom wall therebetween. The body also has inwardly-extending side walls extending from the parallel ones toward both ends of the body. The bottom wall extends between the side walls and has an opening for receiving a pivotal support, a recess for receiving a push rod at one end, and a pad for engaging an end of a valve stem at the other end. An elongate stiffening member extends between upper edges of side walls and specifically between the inwardly-extending side walls extending toward the push rod end of the body. The stiffening member preferably is a rod received in notches in the upper ends of the edges of the side walls and affixed thereto by resistance welding.
Patent CA-2103978-C (CA)
Title: Energy efficient insulation system for refrigerator/freezer
Inventor: CUR NIHAT O
IPC: F25B5/02
Filed: 1993-08-12
Granted: 2002-02-05
Abstract: A refrigeration appliance having at least two refrigeration compartments, each compartment having its own access door, is provided wherein there is a first evaporator for the first compartment, the first evaporator operating at a first pressure level and a second evaporator for the second compartment, the second evaporator operating at a pressure level higher than the first pressure level. There is a control device for directing refrigerant to a selected one of the evaporators from a condenser and for preventing a flow of refrigerant into the first evaporator when refrigerant is being directed into the second evaporator to cool the second compartment. Around the first compartment is placed insulation having a higher thermal resistance than that placed around the second compartment since the first compartment is kept at a lower temperature that the second compartment. A phase change material may be used in association with one or both of the evaporators.
Patent CA-2106783-C (CA)
Title: Reamer/wrench/post kit
Inventor: WEISSMAN BERNARD
IPC: A61C19/02
Filed: 1992-03-31
Granted: 2003-03-11
Abstract: This invention provides a compact and conve-nient dental tool container which is particularly useful for storing dental posts, post wrenches and reamers; and stops for reamers, plus a gauge, coordinating sever-al of a dentist's requirements in a helpful way. A hand-held circular tool holder (10, 710) has a number of peri-pheral compartments (18, 118) for the tools and a selec-tor lid (12, 112) rotatable on the tool holder which selec-tor lid has an opening (48, 148) to access the peripheral compartments. Optionally, a secondary compartment (26) and access opening in the lid provide storage for the post wrenches. A novel breakaway tab (50) locks the lid closed for distribution and marketing, and prefer-ably engages in a unique gauge block (38, 136) for siz-ing the reamers; alternatively an indexing ratchet (158) restricts rotation of the lid. The invention includes a kit comprising the container charged with the several tools described.
Patent CA-2109035-C (CA)
Inventor: AKHTAR MASOOD
IPC: A61B5/0402
Filed: 1993-10-22
Granted: 1997-04-29
Abstract: An  algorithm  for  classifying  cardiac  arrhythmias comprising multiple stages and dual chamber sensing.  A first stage includes the steps of comparing ventricular and atrial rates and declaring that the heart is  in atrial tachycardia or atrial fibrillation on the one hand, or that the heart is in ventricular fibrillation on the other hand.  The second stage is entered if no determination is made in the first stage and, in particular, when the atrial rate equals the ventricular rate.   A third stage is entered in which the heart is paced (ventricular, atrial or both) at a predetermined rate for a set period of time.  Cardiac rhythm classification is made based on heart responses during and after pacing.
Patent CA-2110734-C (CA)
Title: Strap severing and ejecting mechanism for strapping machine
Inventor: PEARSON TIMOTHY B
IPC: B65B13/18
Filed: 1993-12-06
Granted: 1996-06-25
Abstract: Disclosed is a strapping machine of a type having a strapping head, which includes means for advancing a strap fed into the strapping head, means for sensing whether a leading end of the strap being advanced by the advancing means has reached a predetermined location within a predetermined time, and means for retracting the strap.  The invention pertains to a mechanism comprising means adapted to coact with the sensing means for severing the strap being fed into the strapping head into a leading portion including the leading end and a trailing portion if the sensing means has not sensed that the leading end has reached the predetermined location within the predetermined time. There is means adapted to coact with the retracting means for ejecting the leading portion after the strap has been severed.
Patent CA-2122172-C (CA)
Inventor: GEORGER WILLIAM HUGO
IPC: H03H7/46
Filed: 1994-04-26
Granted: 1999-06-22
Abstract: Disclosed is a series tuned resonant autotransformer which passes baseband video signals so that more than one non-synchronized channel can be sent over unshielded twisted pair wires sharing a common cable sheath. The transformer includes a trifilar winding configuration with a capacitor, resistor and ground connection coupled between the two secondary windings. The transformer is able to pass a DC signal as well as a balanced output signal over most of the video bandwidth.
Patent CA-2122339-C (CA)
Inventor: PATEL JAYANTILAL SHAMJIBHAI
IPC: G02F1/21
Filed: 1992-10-01
Granted: 1999-02-02
Abstract: A twisted ferroelectric liquid-crystal optical modulator in which a ferroelectric smectic C* liquid crystal (26) is filled into the gap between two alignment layers (18, 20) aligning the adjacent liquid crystal in two perpendicular directions parallel to the alignment layers.  The ferroelectric liquid crystal has a tilt angle of 45° and is aligned with the tilt angle parallel to the buffing direction of the alignment layer.  Thereby, the liquid-crystal molecules (32), absent any applied field from electrodes (14, 18), slowly twists through 90° across the gap, and the liquid crystal waveguides light linearly polarized by an input polarizer (22) so that it passes a perpendicularly arranged output polarizer (24).  However, a strong electric field causes the ferroelectric molecules to untwist and line up in parallel, thereby destroying waveguiding, and the cell does not transmit.  Intermediate voltages cause partial untwisting and partial waveguiding.  Thus, variations in the applied voltages can modulate the light according to a gray scale.
Patent CA-2127082-C (CA)
Title: System for increasing the capacity of existing local area networks that use shielded twisted wire pair medium
Inventor: FRIDLAND ANATOLY V
IPC: H04L5/02
Filed: 1994-06-29
Granted: 2000-02-08
Abstract: The data communication capacity of an existing local area network (LAN) 10 that uses a shielded twisted wire pair 16 as its transmission medium may be increased with the addition of special frequency selective terminators 36 and single-ended transceivers 20. The single-ended transceivers 20 have two single-ended transmitter connections 42,44 to the two twisted wires 22,24 in the shielded twisted wire pair medium 16, respectively, and one single-ended receiver connection 46 to one of the two twisted wires 22,24 in the shielded twisted wire pair medium 16. The shielded twisted wire pair medium 16 is terminated by the special frequency selective terminators 36 which provide transmission line impedance matching over the signal bandwidth of a single-ended data channel, while providing a high impedance over the signal bandwidth of a differential data channel. Thus, differential data communications are allowed over the signal bandwidth of the differential data channel, while single-ended data communications are allowed over the signal bandwidth of the single-ended data channel, thereby increasing the overall data communication capacity of the LAN.