baber/WOPTO huggingface dataset:
Patent CA-1218579-A (CA)
Inventor: O'CONNOR RICHARD K
IPC: A62B18/00
Filed: 1984-06-06
Granted: 1987-03-03
Abstract: ABSTRACT              Improvements in and relating to Breathing Apparatus A power assisted respirator comprises a facepiece for covering at least the/ nose and mouth of the wearer which has an outlet provided with a one-way exhale valve which is openable to permit air to flow out of the face-piece when a predetermined pressure P is established within the facepiece.   A pump unit     supplies air to the space within the facepiece.   The pump unit     may be connected to an inlet of the facepiece by a flexible hose     or may be mounted directly on or in the face-piece.   A filter canister      is connected to the inlet of the pump means for filtering air supplied to the facepiece.   A one-way inlet valve            is provided in the path of air flowing from the pump unit to the face-piece and a pressure sensor      is provided for sensing the pressure of air in the region of the pump unit inlet for causing deenergisation of the pump unit when the pressure in the region of the pump unit inlet exceeds a predetermined level.   The operating parameters of the pump of the pump unit and the exhale valve are selected so that the pressure within the facepiece at which the exhale valve will open slightly exceeds the pressure at the outlet of the pump which will cause the pump to cease/or substantially ceaseoperating effectively.   Thus in use, during exhalation the pressure within the facepiece will rise to a level at which the inlet valve            will close causing a build-up of pressure at the pump outlet which will cause the pump to cease operating effectively.   Meantime the exhale valve will open.   During normal operation of the pump, because of the resistance to flow provided by the filter canister, the pressure in the region of the pump inlet will be sub-atmospheric.   The pressure sensor is arranged to sense a rise     in this pressure resulting from the pump ceasing/or substantially ceasing to operate effectively and will cause deenergisation of the pump.   The reduction in pressure within the facepiece at the start of inhalation, which is communicated to the pump, is sensed by the pressure sensor which then causes reenergisation of the pump.
Patent CA-1223636-A (CA)
Inventor: MASAKI KAZUMI
IPC: G05F1/455
Filed: 1984-06-19
Granted: 1987-06-30
Abstract: Abstract of the Disclosure The present invention relates to a phase-regulated zero-crossover ac switching circuit. The present switching circuit comprises the compo-nents of (a) regulator having a time constant; (b) ac Wheatstone bridge connected with the regulator and amplifier, which bears in one arm a vari-able resistance; (c) amplifier for an unbalanced voltage generated in the Wheatstone bridge; (d) a device for supplying dc energy to the regulator and amplifier; and (e) thyristor driven by the amplifier, wherein said compo-nents are connected in a manner such that said thyristor is not conducted at the moment when an ac power supply is coupled, and that the current through thyristor starts from a zero-crossover of ac sine wave and success-ively increases to the prescribed level within a period determined by the time constant of the regulator.
Patent CA-1212408-A (CA)
Title: Blocking device
Inventor: MULVENNA JAMES
IPC: E05B65/464
Filed: 1984-07-04
Granted: 1986-10-07
Abstract: ABSTRACT OF THE DISCLOSURE         An improved cam element is disclosed for use in an anti-tip blocking device for preventing the opening of more than one file drawer in a file cabinet at one time.          The improved cam element provides stop means to limit rotation of the cam element between two desired positions yet maintain a cylindrical body portion of the cam element free to be vertically slidable and rotatable within a vertical channel member.
Patent CA-1241013-A (CA)
Inventor: LARSON RICHARD I
IPC: C07C55/07
Filed: 1984-07-27
Granted: 1988-08-23
Abstract: AN IMPROVED METHOD AND BINDER FOR THE MANUFACTURE OF NUCLEAR FUEL PELLETS, AND THE PRODUCT                ABSTRACT OF THE DISCLOSURE    A method and binder composition for prolonging the induced plasticity of a particulate ceramic material admixture comprising uranium dioxide and a fugitive binder, and product thereof, for subsequent compaction by compression molding in the manufacture of nuclear fuel pellets.
Patent CA-1238753-A (CA)
Inventor: MCCORMICK JAMES B
IPC: G01N1/30
Filed: 1984-09-10
Granted: 1988-07-05
Abstract: METHOD AND APPARATUS FOR PREPARING AND EMBEDDING    TISSUE SAMPLES FOR HISTOLOGICAL EXAMINATION        ABSTRACT OF THE DISCLOSURE Capsules in which histological tissue samples are prepared for embedding and in which the samples are embedded include a first and a second member, at least one of the members including a frame that defines an opening.  The members have complementary surfaces for establishing peripheral contact between the members around the opening.  A porous material is spread across the opening so that when the members are in peripheral contact with each other, a tissue-holding region is defined inward of the porous material.  The porous material has a porosity that accesses processing liquids and liquified embedding material, such as molten paraffin, but prevents stray parts of the tissue from floating free of the region.  Preferably, the second members also comprise a frame defining a second opening and porous material spread across the second opening. Preferably, the capsules having openings in both members are stackable in sealing relationship with one another to provide a central passageway through which processing liquids and liquified embedding material may be passed, thereby permitting simultaneous processing of a plurality of tissue samples.  Preferably, one of the frames, that has an opening covered by a porous material, is adapted to retain a protruding block of solidified embedding material having the tissue sample held outward so that the one frame may be clamped in a microtome chuck and tissue slices shaved from the protruding embedding material.
Patent CA-1246442-A (CA)
Inventor: BAYER WILLIAM L
IPC: G01N33/80
Filed: 1984-09-14
Granted: 1988-12-13
Abstract: ABSTRACT            Both blood group and non-blood group immunological reactions are the subject of this invention.  A method of forward grouping is presented wherein known antibodies are attached directly to a solid surface and the red blood cells presented for immunological reaction are activated by treatment with a proteolytic enzyme.  A reverse blood grouping procedure according to the invention utilizes synthetic or purified antigens which may also be attached directly to a solid surface.  The surface is then contacted with an unknown blood component to permit antibodies to undergo immunological reaction with the previously attached antigens.  A solution of red blood cells is used as the indicator mechanism and is activated before usage by treatment with a proteolytic enzyme.  The method of the invention is applicable to non-blood group immunological reactions wherein purified antigens or antibodies or synthetic substances are attached directly to a solid surface.  The surface is then contacted with an unknown fluid that may contain antigens or antibodies specific to those previously attached.  A solution of red blood cells including the known antigen or antibody attached to the solid surface is then brought into contact so that the latter will undergo an immune reaction and indicate the presence of specific antigens or antibodies in the unknown fluid.  The invention encompasses a method of performing a major crossmatch or compatibility test utilizing anti-human immunoglobulin that is attached directly or indirectly to a solid surface which is then contacted by the two blood components which have been previously incubated to permit an antigen-antibody interaction of red blood cells and antibodies.  The antibody sensitized cells will immunologically adhere to the solid phase.  In an alternative major crossmatch procedure, a binder is used to attach red blood cell membranes from a blood donor and the serum from a recipient is allowed to undergo an immune reaction with these membranes on the solid surface.  They are then contacted with red blood cells or synthetic particles sensitized with anti-human immunoglobulin.  Antibody screening and antibody identification are carried out by attaching known antigen carrying cells to a solid surface.  Optionally, these membranes can be preserved with a dilute glutaraldehyde solution.  The solid surface is then contacted with the unknown solution which will undergo an immune reaction to the extent antibodies speci-fic to the previously adhered antigens are present.  Red blood cells or synthetic particles coated with anti-human immunoglobulins are used as the indicator mechanism. These cells or particles will undergo an immune reaction to the extent antibodies in the unknown blood component have immunologically reacted with the antigens on the solid surface.  A direct anti-globulin test may be performed by attaching anti-human immunoglobulin to the solid surface and then subjecting the solid surface to the unknown blood component which may contain immunoglobulin coated red blood cells.
Patent CA-1244853-A (CA)
Inventor: SATO TOSHIYUKI
IPC: F16L27/12
Filed: 1984-10-01
Granted: 1988-11-15
Abstract: ABSTRACT OF THE DISCLOSURE     A universal pipe joint assembly which comprises: a connector housing having a main cavity defined by an internal spherical concave wall of a connector housing body; a pair of axially spaced split rings with their inclined external circumferential walls disposed in relatively slidable contact with the internal spherical concave wall, each of the split rings being deformable so as to be inserted into the main cavity and expansible within the main cavity to take its operating position; and a spacer seal ring sandwiched between the pair of split rings.
Patent CA-1229852-A (CA)
Inventor: GANE BRIAN R
IPC: B01J29/06
Filed: 1984-12-18
Granted: 1987-12-01
Abstract: ABSTRACT OF THE DISCLOSURE                Production of aromatic hydrocarbons This invention relates to a process for producing aromatic hydrocarbon from a feestock comprising C3/C4 hydrocarbons fixed with C2 hydrocarbons, especially ethane.  The mixed feedstock is contacted at a temperature below 580°C with a catalyst composition comprising an aluminosilicate in which the molar ratio of silica to alumina is at least 5:1.     The product is rich in aromatics and can be used as a gasoline blending component.
Patent CA-1229957-A (CA)
Inventor: COSENZA FRANK J
IPC: B25B27/30
Filed: 1985-02-21
Granted: 1987-12-08
Abstract: ABSTRACT         An insertion tool for a helically coiled wire insert of the type used for tapped holes in parent material that is generally softer than a fastener being screwed into the tapped hole, whereby a mandrel having a threaded lead portion and a pivotal pawl inserted in a groove below the threaded portion so that the pawl engages a recess of the insert, in order that the insert may be screwed into the tapped hole.  The pivotal pawl also permits removal and reinsertion of the tool after the coil insert has been installed.
Patent CA-1219646-A (CA)
Inventor: VAN TUIJL ADRIANUS J M
IPC: H03F3/20
Filed: 1985-02-25
Granted: 1987-03-24
Abstract: ABSTRACT : push-pull amplifier.         In order to obtain class AB operation of a push-pull amplifier which comprises a preamplifier (10) and an output amplifier (20) comprising complementary output transistors (T1, T2), the base-emitter voltage of the first output transistor (T1) is converted into a current by a voltage-to-current converter (R1, T3) and this current is re-converted into this base-emitter voltage by a current-to-voltage converter (R2, T4) and added to the base-emitter voltage of the second output transistor (T2). By means of a differential amplifier comprising third and fourth transistors (T5, T6) whose collectors are loaded by current sources (I2, I3) and are connected to the bases of the first and the second output transistor (T1, T2), the sum of said base-emitter voltages is maintained equal to a reference voltage generated across two diode-connect-ed transistors (T7, T8).          (Figure 1).
Patent CA-1226350-A (CA)
Inventor: WESTWOOD SAMUEL M III
IPC: A01K97/12
Filed: 1985-06-17
Granted: 1987-09-01
Abstract: ABSTRACT OF THE DISCLOSURE A fishing line signalling device for attachment to a fishing rod and receiving the fishing line in a manner that a visual or audible alarm or both will be activated when the fish strikes or takes the bait thereby alerting the person using the fishing rod to the fact that a fish has taken the bait or hook. The fishing line signal is battery operated, provided with a switch to selec-tively actuate either or both the visual and audible signals and is adaptable to any size fishing rod, used with any type of reel and allows a person to fish with more than one rod at a time and is suitable for trolling, still water fish-ing, night fishing, ice fishing and fresh or salt water fishing.  The signalling device includes a switch arm that frictionally grips the fishing line and is spring biased with an adjustment device varying the sensitivity of the device so that when the fishing line is pulled, it is removed from the signalling device so that the switch arm can move to close an electrical circuit to operate a buzzer or light or both.
Patent CA-1221034-A (CA)
Title: Impeller shroud
Inventor: CHAMBERLAIN STEPHEN S
IPC: F01D11/00
Filed: 1985-06-28
Granted: 1987-04-28
Abstract: Abstract of the Disclosure An impeller shroud is mounted in a cantilever manner to a stator assembly in a compressor for a gas turbine engine, wherein the impeller has a radial component, the impeller shroud being adapted for deflection around its outer portion in correspondence with deflection which may occur in the outer portion of the impeller.  The stator assembly includes a shroud surrounding the compressor gas path and is directly fixed to the casing of the engine and has a common datum with the rotor portion of the compressor through a thrust bearing.
Patent CA-1265649-A (CA)
Inventor: MCCORMICK FRANCIS P
IPC: C07K14/82
Filed: 1985-07-24
Granted: 1990-02-06
Abstract: Abstract of the Disclosure Antibodies  exhibit  specificity  toward  single  amino  acid differences  between  proteins.  These antibodies may be produced by synthesizing  a  peptide  of  the  appropriate  amino  acid  sequence contained  in  the  protein,  immunizing  a  host  with  the peptide,  and extracting  sera  from  the  host  to  obtain  the  antibodies.    The antibodies  and the desired protein  are then immunoprecipiated under conditions  of  partial  denaturation  to  expose  the  epitope  of  the protein.   The antibodies may be used  for diagnostic or therapeutic purposes.
Patent CA-1234213-A (CA)
Inventor: YASUDA TOORU
IPC: G06T9/00
Filed: 1985-08-22
Granted: 1988-03-15
Abstract: Abstract An inter frame encoding system for video signals is desk cried.  This system includes an encoder for performing inter-frame predictive encoding of a video signal to generate a predictive encoded signal.  A scan converter converts the predictive encoded signal into a scan converted signal of a predetermined block.  A code converter converts an effective picture element in the scan converted signal into a variable-length code and an ineffective picture element therein into a run length code to generate a code-converted signal.  A buffer memory stores the code-converted signal and generates a buffer memory occupancy signal by calculating the quantity to be occupied by the code-converted signal.  A simulator generates a simulation signal by calculating, on the basis of the predictive encoded signal and the code-converted signal, the quantity of information stored in the scan converter.          In response to the buffer memory occupancy signal and the simulation signal a compensated buffer memory occupancy signal is generated.  A mode controller responsive to the compensated buffer memory occupancy signal controls the generation of the predictive encoded signal.
Patent CA-1257310-A (CA)
Title: Push bar exit device with alarm
Inventor: HANDEL MARTIN G
IPC: E05B65/10
Filed: 1985-10-01
Granted: 1989-07-11
Abstract: PUSH BAR EXIT DEVICE WITH ALARM            ABSTRACT OF THE DISCLOSURE      An emergency exit device of the push bar type to control entry and exit of personnel, including a crossbar which may be pushed toward a door to actuate mechanisms which retract a latch bolt, and an alarm and key system for selective alarm actuation.  The alarm and key system includes internal control mechanisms which are mounted in a tamper-proof housing, which may be accessed only by operating the push bar and actuating the alarm.  A light emitting diode in the alarm assembly indicates alarm state, the presence of power, and a preset delay interval for alarm actuation.  A variety of internal and external key operation configurations may be employed.  A fastening arrangement for the exit device housing provides security against unauthorized manipulation of alarm components.  Where mounting the alarm assembly within the exit device frame, an internal mounted guard member may include a protection flange to block access to the alarm.
Patent CA-1258821-A (CA)
Inventor: BRUMER PAUL
IPC: B01J19/12
Filed: 1985-11-12
Granted: 1989-08-29
Abstract: ABSTRACT OF THE DISCLOSURE          Photodissociation of molecules in a known energy level is conducted by raising the molecules from that energy level to a predetermined energy level in the continuum above the dissociation energy of the molecule, along a plurality of different routes.  Each route requires at least one frequency of coherent electromagnetic radiation.  By simultaneous application of the coherent radiation pertaining to one route and the coherent radiation pertaining to another route, and variation of the relative phase and/or relative amplitude of the simultaneously applied radiations, control over the degree to which respective photodissociation pathways are adopted can be exercised, so as to control the relative amounts of different photodissociation products which can be formed.
Patent CA-1272049-A (CA)
Inventor: LALL CHAMMAN
IPC: C22C33/02
Filed: 1986-01-21
Granted: 1990-07-31
Abstract: TITLE               High Strength Powder Metal Parts ABSTRACT OF THE DISCLOSURE            A high strength powder metal part formed from an alloy of iron, nickel, molybdenum and carbon and having an ultimate tensile strength of at least 175,000 pounds per square inch.  The powder metal part is made by mixing the alloy with a lubricant, forming the mixture into the desired part shape, sintering in a dissociated ammonia atmosphere, and cryogenically cooling the sintered part.
Patent CA-1264534-A (CA)
Inventor: JASKOWSKI MICHAEL C
IPC: E04B1/76
Filed: 1986-04-04
Granted: 1990-01-23
Abstract: A nonwoven composite fibrous material adaptable as an insulation medium is formed by a loose layer of inorganic fibers, such as rock wool, glass, ceramic, carbon-graphite or the like, bonded together by at least one carrier web layer positioned on a surface of the inorganic fibrous layer. The carrier web layer is a blend of inorganic fibers and organic fibers with the organic fibers comprising about 1% or less by might of the total nonwoven composite fibrous material. Both organic and inorganic fibers of the carrier web are advanced into interlocking relation with the fibers of the inorganic layer by needle punching the carrier web. The carrier web organic and inorganic fibers have a length greater than the thickness of the inorganic layer in the composite fibrous material so that the needle punching advances organic and inorganic fibers from the carrier web completely through the inorganic layer to mechan-ically bind together the fibers of the inorganic layer to resist separation of the fibers and delamination of the inorganic layer upon handling and instal-lation.
Patent CA-1257180-A (CA)
Inventor: TANITOMI FUMINAO
IPC: A01G23/00
Filed: 1986-04-28
Granted: 1989-07-11
Abstract: ABSTRACT OF THE DISCLOSURE    This invention relates to a tree pruning machine which comprises a frame in a cutting unit having a first member stood on a body having wheels elevating vertically, and a second member projected from the top of the first member forwardly in an ascent gradient and formed with a recess at the front side, the first member having drive wheels mounted on the lower portion thereof and driven by an engine for driving the drive wheels, and a saw chain rotated by the engine through the drive wheels along the frame formed of the first and second members for cutting a branch of a standing tree.  Further, there is also provided a tree pruning machine in which a branch sensing member is telescopically provided in the lengthwise direction of the second member, the front of the sensing member is projected forwardly of the second member to temporarily stop the drive of the pruning machine toward the upward direction of the standing tree.  The sensing member of the pruning machine can reliably sense the branch to be contacted with the top of the cutting unit and the sensing member may not disturb the pruning machine to climb the standing tree.      Thus, the pruning machine can climb the standing tree without fail even when the cutting unit makes contact with the branch of the tree.
Patent CA-1268966-A (CA)
Inventor: GROLL WERNER
IPC: C22C5/04
Filed: 1986-06-23
Granted: 1990-05-15
Abstract: ABSTRACT OF THE DISCLOSURE         Alloys based on palladium for baking on dental ceramics which are favourable in cost and nevertheless readily processable consist of 60 to 80% of palladium, 0 to 8% of gold, 0 to 5% of platinum, 0 to 1% of ruthenium and/or rhenium, 2 to 20% of copper, 1 to 12% of tin and/or indium, 0.2 to 5% of one or several of the elements of tungsten, molybdenum, niobium and tantalum and 0 to 15% of cobalt the sum of the contents of tin and indium by being 5 and 14%.
Patent CA-1262828-A (CA)
Inventor: MORSE ROBERT L
IPC: F25B43/00
Filed: 1986-07-09
Granted: 1989-11-14
Abstract: ABSTRACT    A suction accumulator (10) including a tubular housing (12) defining a liquid storage vessel (15).          A conduit (32) is arranged in the vessel (15) and includes a divider plate (34) for forming two fluid flow passageways (36, 38).  A plastic transition cap (44) is secured to one end of the conduit (32) to form a connection passage (48) between the two fluid flow passageways (36, 38).  A tubular conduit (54) extends from the liquid storage volume through the transition cap member (44) and into the upflow passageway (38) whereby liquid refrigerant is aspirated from the liquid storage volume into the upflow passageway (38).  A screen member (58) is provided in the transition cap member (44) to prevent impurities from flowing through the tubular conduit (54) into the upflow passageway (38).  In one embodiment, a pair of pressure equalizing vents (84) are integrally molded with the conduit (32) to equalize pressures in the accumulator (10) when the compressor is turned off.  In another embodiment, a pressure equalizing vent (101) directly connects the outlet (20) of the accumulator (10) to the liquid storage vessel (15).
Patent CA-1263727-A (CA)
Inventor: DOGADKO PETER
IPC: F02D41/22
Filed: 1986-07-28
Granted: 1989-12-05
Abstract: ABSTRACT               The two cycle engine has a combustion chamber supplied with primary fuel for normal operation.  An electrically operated priming system delivers fuel in addition to the primary fuel.  A control regulates energization of the priming system.  A momentary switch energizes the priming system when the switch closes and enables the control when the switch opens.  The control causes the priming system to operate a predetermined period of time after the control is enabled but is subject to override by a switch responsive to engine temperature.  Thus the priming system is shut down by the temperature responsive switch when engine temperature exceeds a predetermined value.  The timing function of the control is provided by an integrated circuit chip wired as a timer.  When the engine is started the timer chip is reset to zero and the timer starts timing when the momentary switch opens.