baber/WOPTO huggingface dataset:
Patent CA-2018971-A1 (CA)
Title: Damping and shock absorbing devices for bicycles
Inventor: TREMBLAY PAUL J G
IPC: F16F7/12
Filed: 1990-06-13
Abstract: ABSTRACT OF THE DISCLOSURE   This invention seeks to enhance the riding comfort and stability of bicycles. It furthers and corroborates the concept that the comfort of a bicycle ride may be substantially enhanced if in addition to being equipped with a mechanical/hydraulic seat post (which are now available on the market), the bicycle's front wheel is also given a "suspension" capability.  The validity of this concept has been recognized for decades insofar as it applies to motor cycles on which distinct shock absorbers on each wheel represent standard equipment.  To this end, two versions of a front wheel dampening device are proposed:  one introduces a resilient plastic or rubber cushion between the rotatable handle-bar and the stem clamp, while the second gives also a shock absorbing capability to the rotatable handle-bar by using a steel torsion bar which acts as a strong and stable spring between the rotatable handle-bar and the stem.     ABSTRACT OF THE DISCLOSURE   This invention seeks to enhance the riding comfort and stability of bicycles. It furthers and corroborates the concept that the comfort of a bicycle ride may be substantially enhanced if in addition to being equipped with a mechanical/hydraulic seat post (which are now available on the market), the bicycle's front wheel is also give an "suspension" capability.  The validity of this concept has been recognized for decades insofar as it applies to motor cycles on which distinct shock absorbers on each wheel represent standard equipment.  To this end, two versions of a front wheel dampening device are proposed:  one introduces a resilient plastic or rubber cushion between the rotatable handle-bar and the stem clamps, while the second gives also a shock absorbing capability to the rotatable handle-bar by using a steel torsion bar which acts as a strong and stable spring between the rotatable handle-bar and the stem.
Patent CA-2019034-A1 (CA)
Title: Fet comparator circuitry
Inventor: SAUER DONALD J
IPC: H03K5/24
Filed: 1990-06-14
Abstract: A comparator circuit for operation at video rate signals includes input switches to alternately couple a reference and a signal potential to a summing capacitor.      The capacitor is coupled to the input of a first inverting amplifier. The amplifier includes a switch between input and output terminals for selectively autozeroing the amplifier. The amplifier is direct coupled to the input of a second inverting amplifier having an autozero circuit exclusive of a connection to the input of the second amplifier. Timing circuitry for controlling the autozero function is arranged to minimize the effects of clocking transients upsetting the autozeroed potentials thereby reducing the response time and enhancing the sensitivity of the comparator.
Patent CA-2019044-A1 (CA)
Title: Cylinder mower air-lifted grass cuttings
Inventor: DUNN KENNETH
IPC: A01D34/49
Filed: 1990-06-19
Abstract: ABSTRACT      A driven cylinder mower comprises a mower body 101 (Figure 2) and a grass box (Figure 3).  An electric motor drives a cutter assembly 202, and also a turbo fan drawing air through an opening 207, both mounted in the body.  The grass box has a mouth 204 over the cutters and an opening 302 which mates with the opening 207 in the mower body, and through which the turbo fan sucks air from the cutting region through the grass box.    The air from the turbo fan may be discharged within a skirt on the underside of the mower body to assist in supporting the mower above the ground.    This skirt, and the land wheels and rear roller, lie behind the cutters, so as to avoid flattening the grass before it reaches the cutters.   The land wheels are preferably inset, so that they run only on cut grass.
Patent CA-2019177-A1 (CA)
Inventor: MUELLER KARL F
IPC: C08G18/48
Filed: 1990-06-18
Abstract: 6V-17628/1+2/+/CGC 1433 Fluorine and/or Silicone Containing Poly(alkylene-oxide)-block Copolymers and Contact Lenses Thereof Abstract of the Disclosure Fluorine and/or silicone containing block copolymers are described which are thecopolymerization product of mono; di- or trivinyl substituted poly(alkylene oxide) prepolymers (A) and fluoroalkyl-alkylene acrylates or methacrylates (B1), oligosiloxy-silyl alkyl-acrylates or methacrylates (B2), and optionally other copolymerizable comonomers (C). The novel block copolymers are prepared in solution or bulk and are characterized by high oxygen permeability, flexibility and wettability and are therefore well suited as biocompatible polymers, especially as contact lenses.
Patent CA-2019397-A1 (CA)
Title: Drive mechanism for figurine
Inventor: SATOH YASUTA
IPC: B44C5/06
Filed: 1990-06-20
Abstract: ABSTRACT OF THE DISCLOSURE          A figure moving article capable of accomplishing unique and unexpected movements sufficient to exhibit unexpected variations in posture.  The figure moving article includes a cylindrical container having a peripheral wall formed of a flexible material.  In the container is arranged a bending structure which is actuated to cause the container to carry out bending motion.  Also, a motor is received in the container in a manner to be operatively connected to the bending structure to actuate the bending structure and a motor drive circuit for driving the motor is arranged in the container.  The bending structure is operatively connected to the container so as to transmit the actuation of the bending structure to the container, resulting in the container exhibiting bending movement.
Patent CA-2023042-A1 (CA)
IPC: E21B4/00
Filed: 1990-08-09
Abstract: ABSTRACT OF THE DISCLOSURE     A Sealed Downhole Motor Drive Shaft Universal  Joint Assembly consisting of a housing with an interior and an exterior surface.   The interior has an end wall and side walls.    The  end wall  has  an elongate projection with a concave terminus.  The side walls have a plurality of slots. A shaft is provided having an exterior surface and opposed ends.    Each  of  the  ends  has  a  central  cavity  with  a substantially concave end wall.  The exterior surface of the drive  shaft  has  a  plurality  of annularly  spaced pockets adjacent each end.  The pockets are in substantial alignment with the end wall of the central cavity.   Each end of the drive shaft  is telescopically received within one of  the housings.   A thrust ball is positioned between the concave terminus of the elongate projection of the housing and the concave end wall of the central cavity of the shaft thereby transmitting thrust loads between the housing and the shaft while permitting omni-directional relative movement of the housing and the shaft.   A plurality of ball bearings are positioned in the pockets of the shaft and the slots of the housing thereby transmitting radial loads between the housing and  the  shaft  while  permitting  omni-directional  relative movement of the housing and the shaft.   An end cap engages the external surface of the housing thereby preventing the separation of the shaft and the housing.  Seals are disposed between the end cap and the housing to prevent the entry of drilling fluids into the housing.
Patent CA-2026908-A1 (CA)
Title: Audio commentary system
Inventor: GRIFFIN ROBERT J
IPC: H04B10/10
Filed: 1990-10-04
Abstract: A B S T R A C T             Orator units are associated with particular exhibit or guiding locations and provide an audio commentary by the medium of ON and OFF states of electromagentic radiation.  Auditor units are portable units associated with particular viewers or users and are adapted to detect the electromagnetic radiation and produce therefrom the audio commentary.  The auditor unit may be designed to signal, the orator through ON or OFF states of electromagnetic radiation the request for a commentary. The orator unit may be designed to provide a commentary in response to the auditor request.  An orator  may be designed to provide a plurality of commentaries on corresponding frequency modulation (FM) channels (which are converted to and from electromagnetic radiation) and the orator and auditor may be designed so that the orator may tune the auditor to demodulate only the FM channel corresponding to the auditor's selected type  and time of commentary.  A plate encoded with conducting and non conducting areas may be used to encode an auditor unit to cause it to select the type of commentary desired by a viewer or user.
Patent CA-2028009-A1 (CA)
Title: Transparent wound dressing
IPC: A61F13/02
Filed: 1990-10-19
Abstract: A flexible, transparent wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, a release layer, and a dimensionally stable backing member.  The wound dressing is comprised of a thin-film transparent layer having an adhesive perimeter portion and a center portion, and a hydrogel material positioned in the center portion of the transparent layer.  Since the wound dressing is transparent, a grid pattern may be printed on the thin-film transparent layer to permit measurement of a wound.  During manufacture, a vacuum pressure is applied to allow temporary access to the center portion of the thin-film transparent layer, creating a cavity for insertion of the hydrogel material.  The dimensionally stable backing member is then adhesively attached around the perimeter portion of the thin-film transparent layer to help the wound dressing maintain its shape.  When the wound dressing product is to be applied to a wound site, the release layer is removed, preferably using an extending tab attached thereto, to expose the hydrogel material.  The remaining layers of the wound dressing product are then applied to the wound site, with the hydrogel material directly contacting the wound. Once these layers are in place, the dimensionally stable backing member is removed, preferably using an extending tab attached thereto.
Patent CA-2033839-A1 (CA)
Inventor: MCMARLIN ROBERT M
IPC: E04B2/02
Filed: 1991-01-09
Abstract: A glass block wall (10) has a frame member (12) that frictionally engages the glass block (14) adjacent thereto. A continuous flexible spacer member (16) extends along the horizontal end walls of the glass blocks in each course. Separate vertical spacer members (46) abut the adjacent vertical end walls of the glass blocks and a filler material is (18) positioned in the recess formed between the edges of the adjacent glass blocks (14) and the edge of the spacer member (16). The spacer members (16) have a configuration to align the glass blocks (14) in the wall and to stabilize each of the glass blocks in the wall.
Patent CA-2035613-A1 (CA)
Title: Valve assembly, for use in combination with a straight-cylinder, gas-compression chamber, and in combination therewith
Inventor: BENNITT ROBERT A
IPC: F04B53/12
Filed: 1991-02-04
Abstract: The Assembly, designed for use in combination with a straight-cylinder, gas-compression chamber, has a center bolt which is threaded at opposite end thereof to receive a pair of valve sets. Each of the latter has a ported valve seat, valve guard, and valve plate.      The guard is set about the bolt, and against a shoulder formed on the bolt therefor. The seat is centrally threaded, to engage one of the threaded ends of the bolt, and it and the guard confine the valve plate therebetween. In that one of the valve sets is turned 180° from the other, i.e., the two guards being in confrontation, and the two seats remotely disposed, the one valve set is open to fluid flow, while the other is closed, as the Assembly is reciprocated in such a straight-cylinder, chamber. Identical valve sets, on different, short bolts set in end closures of such a chamber, serve as gas inlet valves, while the reciprocable Assembly carries the discharge valves. The invention obviates any need for pistons, per se as, according to a feature of the invention, the valve sets carry replaceable sealing (viz., piston rings).
Patent CA-2036311-A1 (CA)
Inventor: RAUBENHEIMER STEPHANUS J
IPC: D21C1/04
Filed: 1991-02-12
Abstract: A PROCESS FOR PRODUCING PULP FROM A LIGNOCELLULOSIC-CONTAINING MATERIAL                               ABSTRACT     This   invention   provides   a   process   for   producing   pulp   from   a lignocellulosic-containing material.   According to one aspect of the invention, there is provided a process for reducing  the  lignin  content  (as  expressed  by  the  Kappa  number)  of unbleached pulp intended for dissolving grade pu1p manufacture, the process including the step of applying an alkali extraction step to the pulp.   According to another aspect of the present invention, there is provided a process for producing  dissolving grade  pulp,  the  process  including  the following steps:   a pre-hydrolysing step;   a step of dissolving the lignin contained in the pre-hydrolysed material; and carrying out an alkali extraction step.            The alkali extraction step may include using about 2% to 5%, preferablyabout 3%, alkali by mass of pulp; at a temperature of about 50°C to 100°C, preferably about 70°C to 80°C;  for a period sufficient to give optimal lignin removal. The alkali used is preferably sodium hydroxide.   According to a further aspect of the present invention, there is provided a dissolving grade pulp when produced by a process described above.
Patent CA-2036919-A1 (CA)
Title: Gas absorption for separation of hydrocarbons
Inventor: BAUER HEINZ
IPC: C07C7/11
Filed: 1991-02-22
Abstract: Abstract of the Disclosure For recovery of low-boiling hydrocarbons by scrubbing, the crude gas mixture which contains low-boiling and high-boiling hydrocarbons, is treated with a scrubbing agent, by which the high-boiling components are scrubbed-out of the gas mixture.  The loaded scrubbing agent, with the addition of liquid medium miscible with the scrubbing agent and which reduces the solubility for the scrubbed-out hydrocarbons, is regenerated and the completely regenerated scrubbing agent is recycled to the scrubbing.  The regeneration is preferably divided into the following individual steps:    (a) stripping of the loaded scrubbing agent, optionally with addition of medium, (b)  addition of the liquid medium to partially regenerate scrubbing agent, decanting of the split phases, (c)  stripping of the resultant decanted scrubbing agent/medium mixture, and (d)  rectifying the scrubbing agent/medium mixture to separate the scrubbing agent.
Patent CA-2037438-A1 (CA)
Title: Low chromium active charcoal
Inventor: PAGOTTO JACK G
IPC: A62D5/00
Filed: 1991-03-01
Abstract: ABSTRACT OF THE DISCLOSURE         Activated charcoal or ASC whetlerite charcoal for use in providing protection against chemical warfare agents contains chromium VI, which is a known carcinogen.  Thus disposal of the charcoal can present problems.  The charcoal is usually impregnated with the chromium and other active metals by placing the charcoal in a solution of the metals, and oven drying the charcoal so that crystals are deposited thereon.  It has been found that if the charcoal is freeze-dried the quantity of the metals such as chromium VI can be reduced by as much as 50% without compromising the performance of the charcoal.
Patent CA-2041908-A1 (CA)
Title: Herbicide consisting of an n-phenyl-3,4,5,6-tetrahydrophthalimide and a phenoxyalkanecarboxylic acid derivative
Inventor: SCHOENHAMMER ALFONS
IPC: C07C57/28
Filed: 1991-05-07
Abstract: O.Z. 0050/41602 Abstract of the Disclosure: Herbicides contsining inert additives and a synergistic amount of one or more N-phenyl-3,4,5,6-tetrahydrophthalimides of the formula I                                                   (I) where R is H, F or Cl, R1 is H, Cl, Br, CN or C1-C6-alkyl and R2 is H or C1-C6-alkyl, and one or more derivatives of a substituted phenoxyalkanecarboxylic acid of the formula II                                                 (II) where n is 1, 2 or 3, X is Cl or CH3, R3 is H or CH3, R4 is OR5 or NR6R7, R5 is C1-C8-alkyl, H, an alkali metal cation, one equivalent of an alkaline earth metal ion or an anunonium or substituted ammonium ion and R8 and R7 are each H or C1-C4-alkyl.
Patent CA-2042287-A1 (CA)
Inventor: MACK ROBERT J
IPC: C11D17/04
Filed: 1991-05-10
Abstract: IR#4687 NON-WOVEN FIBRIC CONSTRUCTION         FOR DETERGENT POUCH               ABSTRACT OF THE DISCLOSURE  A  laundry  detergent  pouch  comprising  a non-woven  web  of  non-woven  sensitive  material  normally having  interstices  capable  of  passing  laundry  detergent powder.    The   web   is   compressed   and   bonded,   while compressed,  to  hold  the  fibers  in  compressed  condition filling  the  interstices to  prevent  passage  of  detergent powder outwardly thereof.
Patent CA-2043671-A1 (CA)
Title: Pharmacologically active cns compounds
Inventor: LEACH MICHAEL J
IPC: A61K31/505
Filed: 1991-05-31
Abstract: A B S T R A C T          PHARMACOLOGICALLY ACTIVE CNS COMPOUNDS       The invention relates to compounds of formula (I) and salts thereof                         (I) wherein R1 and R2 are the same or different and are each selected from hydroxy, or a group NR9R10 wherein R9 and R10 are each hydrogen, alkyl, aryl, arylalkyl or together with the nitrogen atom to which they are attached form a ring, optionally containing a further heteroatom and optionally further substituted by alkyl, aryl or arylalkyl; R3 is selected from hydrogen, haloalkyl, alkyl and halo, R4 to R8 are the same or different, and are each selected from  hydrogen,  halo,  nitro,  amino,  sulphonamido  or alkylsulphonylamino; or R4 and R5 or R5 and R6 may together form a carbocyclic ring; with the proviso that at least one of R4 to R8 is other than hydrogen.       The compounds may by used for the treatment or prophylaxis of a neurodegenerative or other neurological disorder of the CNS,  the aetiology of which includes excessive release of the neurotransmitter glutamate.
Patent CA-2049732-A1 (CA)
Title: Lifting hook arrangement for railway tank car
Inventor: BAKER THOMAS B
IPC: B61D5/06
Filed: 1991-08-26
Abstract: Abstract of the Disclosure An improved bolster assembly (21) is for use on a railway tank car (T).  The assembly comprises a vertical web member (23) the upper end of which is formed to fit about the outer surface of the shell (S) forming the tank.  The member has a lifting hook opening (41) formed therein adjacent the outer end of the member.  The size and orientation of the opening conform to the Association of American Railroads (AAR) design specifications for means used in vertically lifting the car.          Reinforcement plates (45a, 45b) are attached to at least one side of the web member, at the upper end thereof, to reinforce the member.  The reinforcement plates are spaced from the opening and not adjacent thereto.
Patent CA-2050065-A1 (CA)
Inventor: SAJCZYK ANDRZEJ
IPC: F16H7/02
Filed: 1991-08-27
Abstract: A tensioner with a pulley rotatably mounted to a pivot arm that is biased with a spring means, the pivot arm includes a leg extension for inhibiting movement of the arm with a damping means.  A method for tensioning a synchronous toothed belt with the tensioner so as to substantially inhibit movements of the pivot arm as attributed to dynamic tension variations in a belt drive system while damping movements of the arm.  A method for tensioning a synchronous belt drive with the tensioner by biasing a moveable pulley against the belt with a force sufficient to limit the amplitudes of resonance tension variations and damping the biasing of the pulley to prevent substantially most cyclic movements of the pivot arm while simultaneously accommodating thermal changes in drive length.
Patent CA-2052591-A1 (CA)
Title: Method and apparatus
Inventor: ROBSON KENNETH
IPC: H01L41/12
Filed: 1991-10-01
Abstract: ARMSTRONG WORLD INDUSTRIES, INC.                            Abstract "Method and Apparatus"      A bi-directional magnetostrictive actuator is used to control a manufacturing apparatus and process, by varying the shape, location, or dimension of a part of the apparatus, especially one used in manufacture of a flooring product, in particular a knife over roll coater.
Patent CA-2052771-A1 (CA)
IPC: G10H1/00
Filed: 1991-10-04
Abstract: ABSTRACT OF THE DISCLOSURE            METHOD AND APPARATUS FOR SIMULTANEOUS OUTPUT OF           DIGITAL AUDIO AND MIDI SYNTHESIZED MUSIC      A  method   and   apparatus   are  disclosed  for simultaneously outputting digital audio and MIDI synthesized music  utilizing  a  single  digital  signal processor.   The Musical Instrument Digital Interface (MIDI) permits music to be  recorded  and/or  synthesized  utilizing  a  data  file containing multiple serially listed program status messages and matching note on and note off messages.   In contrast, digital audio is generally merely compressed, utilizing a suitable  data  compression  technique,  and  recorded.   The audio  content  of  such  a  digital  recording may  then be restored by decompressing the recorded data and converting that  data  utilizing  a  digital-to-analog  convertor.   The method and apparatus of the present invention selectively and alternatively couples portions of a compressed digital audio  file  and  a MIDI  file to  a  single digital  signal processor which alternately decompresses the digital audio file and implements a MIDI synthesizer.  Decompressed audio and MIDI synthesized music are then alternately coupled to two separate buffers.   The contents of these buffers are then    additively    mixed    and    coupled    through a digital-to-analog convertor to an audio output device to create an output having concurrent digital audio and MIDI synthesized music.
Patent CA-2053191-A1 (CA)
Inventor: BLACK GARY W
IPC: G07F11/54
Filed: 1991-10-10
Abstract: Abstract of the Disclosure A completely automatic, fully self-contained vending machine of standard size which may be operated so that a packaged (boxed) dough-based food product such as a pizza can be withdrawn from a freezer for storing the food product, and delivered to a microwave oven for heating to an appropriate temperature, for delivery (of the heated and cooked food product) to the consumer within a relative short, commercially-desirable time period on the order of one minute  or less.  Also, a special, high intensity microwave oven which incorporates directionally variable guide vanes for regulating the microwave cooking process with improved efficiency; a dough-based food product (such as a pizza or the like) constituted of a dough which is specially blended for interacting with the microwave oven to achieve rapid cooking times while simultaneously providing a cooked food product of improved taste, quality and consistency; and a carton for containing the food product which is formed in a manner which facilitates all phases of the food-dispensing process including freezing, microwave cooking, and eventual delivery to the consumer.
Patent CA-2055991-A1 (CA)
Inventor: BLEVIN JOHN H
IPC: H04L12/24
Filed: 1991-11-21
Abstract: Disclosed is a method and apparatus for identifying remote terminals which are networked in a digital loop transmission on system. A Site Interface Unit (SIU) at one of the remote terminals acts as a master. The Bank Controller Unit (BCU) at each remote terminal calculates a 16-bit number based on its 60-byte serial number. A binary search is then performed by the SIU to determine the calculatednumber of each BCU, and an address is assigned to each remote terminal by the SIU. Any conflicts in the numbers initially calculated are resolved by transmission of the full 60-byte serial number.
Patent CA-2058063-A1 (CA)
Title: Foam molding having various density regions, the production thereof, and a mold therefor
Inventor: HAARDT UDO
IPC: B21D17/02
Filed: 1991-12-19
Abstract: Abstract of the Disclosure: Moldings made from polyolefin particle foams having a mean density of from 0.015 to 0.100 g/cm3 and having at least two different regions whose densities differ by from 0.005 to 0.030 g/cm3 have a transition zone between the different density regions having a thickness of not more than 25 mm.