baber/WOPTO huggingface dataset:
Patent CA-2092946-A1 (CA)
Title: Three-level three-phase inverter apparatus
Inventor: KAWABATA TAKAO
IPC: H02M7/483
Filed: 1993-03-30
Abstract: A three level three-phase inverter apparatus operating on a proposed pulse width modulation method whereby good output voltages are obtained free of the effects of the minimum pulse width constraints of switching devices and whereby the neutral point voltage is controlled.  The apparatus has a modulation circuit containing a microprocessor and a voltage vector selection circuit.  The microprocessor divides one period into six segments of 60 degrees each.  Each segment is divided into four triangular regions each determined by the vertexes of voltage vectors.  An output voltage command is given as a vector.  Once the segment and region to which a given vector belongs are determined, the voltage vectors corresponding to that region and the order is which to output these vectors are derived from the predetermined vector combinations and their output orders stored beforehand in the voltage vector selection circuit.  Each vector output order is arranged so that one voltage vector is replaced by another through a switching operation of any one phase. The time average of these consecutively output voltage vectors in a given carrier period is modulated to coincide with the value of the command vector.  This scheme provides good output voltage waveforms while controlling the neutral point voltage.
Patent CA-2093083-A1 (CA)
Title: X-ray contrast compositions and method for their use in the visualization of the gi tract
Inventor: ILLIG CARL R
IPC: A61K49/04
Filed: 1993-03-31
Abstract: ABSTRACT          Disclosed is an orally or rectally administrable X-ray contrast formulation in the form of an aqueous dispersion or emulsion for X-ray examination of the gastrointestinal tract, comprising:  (A) 1 to 50% w/v of a non-aqueous phase; (B) 0.001 to 75% w/v of an iodine-containing X-ray contrast agent having the formula:                    (I) (wherein:  R is an alkyl group containing from 2 to 8 carbon atoms which is unsubstituted or substituted by a C1-C6 alkyl, hydroxyl or C1-C6 alkoxy substituent; and n is an integer of 1 to 5);          (C) 0 to 10% w/v of at least one surfactant; (D) 0 to 20% w/v of at least one physiologically acceptable excipient, not including the surfactant (C); and (E) water in an amount more than 0 and sufficient to make the total 100% w/v and a method of its use in diagnostic radiology of the gastrointestinal tract.
Patent CA-2093863-A1 (CA)
Title: Pneumatic control front valve
Inventor: BONOMI AGOSTINO
IPC: F16K1/42
Filed: 1993-04-13
Abstract: ABSTRACT     A cut-off valve  for fluids comprising a stopper  (13) fixed in  the valve  body contiguously  to one  of  the passages (11,12) for the inflow and outflow of fluid, a valve seat (16c) displaceable between said two passages and designed to move close to or away from said stopper (13), thus  providing the  closing and  opening of  the valve. The valve  includes a  pneumatic actuator  (16a, 18) which provides the movement of the valve seat (16c) to open  and/or closed  position, the  said valve  seat being defined  by  a  portion  of  the  said  pneumatic actuator.        Fig. 1
Patent CA-2094135-A1 (CA)
Inventor: BAO QI-BIN
IPC: A61L27/00
Filed: 1991-11-21
Abstract: A prosthetic nucleus for a vertebral disc is made of a hydrogel material. The hydrogel prosthetic nucleus has a shape generally conforming to the natural nucleus pulposus. The hydrogel has a water content of at least 30% and has a compressive strength of 4MNm<-><2> or greater. When the hydrogel material is dehydrated, it has a dimension of less than half of that of the hydrated hydrogel nucleus. The prosthetic nucleus may be formed of two or more pieces of hydrogel material which pieces, when combined, have a shape generally conforming to the natural nucleus. The prosthetic nucleus for implantation in the disc space after removal of a damaged or degenerated nucleus may also be formed from a multiplicity of hydrogel beads having a water content of at least 30%. The beads are covered by a semi-permeable membrane. The membrane has porosity less than the size of the beads to thereby retain the beads therein but permit fluids to flow in and out of the prosthetic nucleus. <IMAGE>
Patent CA-2098155-A1 (CA)
Title: Application of an improved damper to an intervertebral stabilization device
Inventor: NAVAS FERNAND
IPC: A61F2/74
Filed: 1993-06-10
Abstract: ABSTRACT OF THE DISCLOSURE      This invention relates to an application of an im-proved damper, of the type comprising means for progressive-ly resisting, in exponential manner, the advance of a piston under the effect of a force of axial compression, said means constituting a stop opposing any displacement of the piston beyond a determined value of this displace-ment, to an intervertebral stabilization device.
Patent CA-2098337-A1 (CA)
Title: Catalytic reactor bed
Inventor: NOE STEPHEN A
IPC: C01C1/04
Filed: 1993-06-14
Abstract: A fixed bed, dual-zone radial flow catalytic reactor is disclosed. In particular, the catalyst bed configuration comprises a first freeboard outwardly radial flow catalyst zone in series with a second inwardly radial flow zone separated by an interconnecting substantially impermeable catalyst chute to accommodate catalyst settling while preventing hot spots and/or fluidization in the freeboard area. A gas distributor divides the freeboard zone into segments including a bypass segment and one or more catalyst segments. The radial flow of gas through each segment is essentially unaffected by the level of catalyst so that the flow pattern is not adversely affected by catalyst setting in the freeboard zone.
Patent CA-2104498-A1 (CA)
Title: Procedure and Equipment for the Sterilization of Bone Grafts, in Particular, that of Human Spongiosa Grafts
Inventor: KNAEPLER HARALD
IPC: A61L2/04
Filed: 1993-08-20
Abstract: The following steps are carried out for disinfecting a bone transplant: making available, and measuring the size of, the bone transplant (18); introducing the bone transplant (18) into a vessel (13) having a predetermined capacity; filling the vessel (13) with a sterile liquid up to a vessel mark (24), provided for all sizes of bone transplant, above the bone transplant (18); sealing the vessel (13) with a lid (26) having a self-sealing pierceable region (28); inserting the sealed vessel (13) in a heating unit (1) and heating the vessel (13) over a constant first time-span to a final temperature, and maintaining this final temperature over a second time-span having a fixed relationship with the measured size of the bone transplant (18); cooling the vessel (13) to room temperature; piercing the pierceable region (28) of the lid (26) and a pierceable region of another lid (36) of a collecting container (34) by means of a transfer set (33) for discharge of the liquid from the vessel (13) into the collecting container (34); and removing the transfer set (33) from the vessel lid and introducing the vessel (13) into a cooling chamber in order to freeze the bone transplant (18). <IMAGE>
Patent CA-2106665-A1 (CA)
Title: Process for the preparation of crystalline copolyesters
Inventor: CASSELL MICHAEL L
IPC: C08G63/16
Filed: 1992-04-07
Abstract: Disclosed is a process for the preparation of crystalline copolyesters from substantially amorphous, diethylene glycol-containing copolyesters wherein the azeolite is incorporated in the substantially amorphous copolyester to promote crystallization upon heating a particulate form of the resulting copolyester at crystallizing effective temperatures.
Patent CA-2107087-A1 (CA)
Title: Cyclone with double acting extraction system
Inventor: MERCIER DOMINIQUE
IPC: B04C5/12
Filed: 1992-03-27
Abstract: PCT No. PCT/FR92/00281 Sec. 371 Date Sep. 21, 1993 Sec. 102(e) Date Sep. 21, 1993 PCT Filed Mar. 27, 1992 PCT Pub. No. WO92/17278 PCT Pub. Date Oct. 15, 1992.A device for separating particles from a liquid to be treated is disclosed. The device has a cylindrical enclosure with an inlet for creating a swirling flow at its upper end and an annular channel formed by a flow diverter plate leading to a retention chamber at its base. The flow diverter generates an ascending swirling flow of treated liquid which is discharged through an axial outlet tube in the uppermost portion of the enclosure. The flow diverter includes at least one plane central section and means for adjusting its longitudinal position to adjust the annular channel. The axial outlet tube is extended downwardly by a flow adjusting element to create a flow of annular section.
Patent CA-2107546-A1 (CA)
Inventor: HARTLEY DOUGLAS
IPC: H04M11/04
Filed: 1993-10-01
Abstract: An improved alarm security system is disclosed which provides caller identification information when an alarm panel completes a telephone communication with a central computer.  Such information is automatically provided by the telephone network upon initiation of a telephone communication.  The central computer can use this information alone or in combination with other information received from the alarm panel to improve reliability and provide a more effective security system.
Patent CA-2108195-A1 (CA)
Inventor: ST MARIE RODNEY L
IPC: E04F11/18
Filed: 1993-10-12
Abstract: ABSTRACT    A cover to cover the upper rail of a railing.  The upper rail has a top, bottom and side. The cover has a curved top with a concave inner surface to be positioned adjacent the top of the rail.  The longitudinal ribs on the inner surface.  The side walls to be positioned adjacent the sides of the upper rail.  There are flanges on the bottom of the side walls to contact the bottom of the rail to locate the cover on the rail.
Patent CA-2109027-A1 (CA)
Title: Seal for vacuum molding apparatus
Inventor: NOWAK EDWARD J JR
IPC: B29C43/56
Filed: 1993-10-22
Abstract: ABSTRACT         A seal assembly for a vacuum molding apparatus having a pair of dies movable with respect to one another has  substantially vertically  oriented wiper plates sealingly secured to exterior side walls of a first die and circumscribing the periphery thereof, substantially vertically oriented  seal  angle plates sealingly secured to exterior side walls of a second die and circumscribing the periphery thereof, with the seal angle plates extending downwardly past the parting lines of the second die and with the inward walls of the seal angle  plates  being  substantially  parallel  with and closely spaced from the outward walls of the wiper plates when the mold is at least partially closed, and an elongate packing seal disposed substantially horizon-tally within and partially projecting from a channel on the inward wall of each seal angle plate and near the lower edge of the seal angle plate below the parting line of the second die so that the projecting portion of each packing seal presents a surface which makes sealing engagement with a wiper plate when the mold is at least partially closed, thereby defining a volume which is isolated from the surrounding atmosphere.          In accordance with preferred aspects of the invention, means for preventing the packing seal from dislodging from the channel and means for adjusting the packing seal to correct for minor leaks are provided.          The seal  assembly of the  invention has  a single external peripheral seal which is effected on a vertical surface, thereby reducing leak potential and facilitating leak detection.
Patent CA-2110031-A1 (CA)
Title: Digital Sound Level Control Apparatus
Inventor: HONDA TOSHIO
IPC: H04M9/00
Filed: 1993-11-25
Abstract: A digital sound level control apparatus for adjusting the reception sound level from all telephone circuits to a substantially fixed level comprises a region discrimination circuit for discriminating PCM data input from a PCM conversion section, the data having a segment code for compressing and decompressing a digital audio signal, including an intrinsic variation signal, abasic normalization level signal, and a coding threshold value; a multiplicationcircuit for outputting an input level signal of 12 bits, an addition circuit; a register for holding a pad multiplication value corresponding to a reception circuit; another multiplication circuit for multiplying the input level signal by the pad multiplication value to output an output level signal for outputting sound of a predetermined sound level; and a comparison region discrimination circuit, a subtraction circuit, a division circuit, and a register for regenerating an 8-bit digital signal from the output level signal.
Patent CA-2110037-A1 (CA)
Title: Coating based on polymers containing carboxyl groups and epoxy resins
Inventor: ENGELKE STEPHAN
IPC: C09D151/08
Filed: 1992-05-19
Abstract: Coating agents based on polymers containing carboxyl groups and on epoxy resins Abstract The present invention relates to a coating agent, which is characterized in that it comprises A)   at least one acrylate copolymer (A) which contains carboxyl  groups  and  is  obtainable  by  solution polymerization using less than 5 % by weight, based on the total weight of the monomers employed for the preparation of copolymer (A), of one or more poly-siloxane macromonomers a1 having a number-average molecular weight of 1000 to 40,000 and on average 0.5 to 2.5 ethylenically unsaturated double bonds per molecule, and/or B)   at least one acrylate copolymer (B) which contains epoxide groups and is obtainable by solution poly-merization using less than 5 % by weight, based on the total weight of the monomers employed for the preparation of copolymer (B), of one or more poly-siloxane macromonomers al and [sic] a number-average molecular weight of 1000 to 40,000 and on average 0.5 to 2.5 ethylenically unsaturated double bonds per molecule, C)   if appropriate one or more further addition and/or condensation resins containing carboxyl groups and D)   if appropriate one or more further epoxy resins.
Patent CA-2110745-A1 (CA)
Title: Fluid transfer pump
Inventor: HANSEN MILTON N
IPC: F04C15/00
Filed: 1993-12-06
Abstract: ABSTRACT    An improved rotary gear within a gear transfer pump, including a pump housing having a circular pumping chamber communicating with a first port and a second port.  An externally driven rotor is rotatable within the chamber and is located in meshing relationship with an internal idler gear such that upon rotation of the rotor, fluid at the first port is drawn into the pumping chamber and transferred under pressure to the other port.  To enable the pump to handle an abrasive fluid medium or a non-homogeneous pump fluid, an idler gear seal and a shaft seal are employed to contain pumped fluid within the pump chamber.  In addition, a source of lubricating/flushing fluid is communicated to an idler gear bearing region and a shaft bearing.  The idler gear seal includes a "flow resisting" side exposed to pump chamber fluid and a "flow passing" side exposed to lubricating/flushing fluid.  The shaft seal includes a "flow resisting" side exposed to pump chamber pressure and a "low-chamber" side exposed to lubricating fluid.  A cross-communicating fluid circuit maintains the "flow resisting" sides of both seals at substantially the same pressure.  In an alternating embodiment, the flow resisting side of the idler gear seal and the full resisting side of the shaft seal are both communicated with intake port pressure.  By introducing the lubricating/flushing fluid at a pressure higher than the pressure to which the high-pressure sides of the seals are exposed, fluid leakage across the seal interfaces will occur from the "flow passing" sides to the "flow resisting" sides, thereby flushing the seal interfaces with the lubricating/flushing fluid.  With this arrangement, the flow of pump chamber fluid across the seal interfaces is substantially resisted.
Patent CA-2111419-A1 (CA)
Title: Hidden bonding system
Inventor: HENIG RON
IPC: B23K1/00
Filed: 1993-12-14
Abstract: A hidden bonding system includes a bonding member for bonding of adjacent surfaces.  The bonding member itself comprises a meltable portion and extended electrically conductive leads to the meltable portion.  These leads enable remote power to be applied to the meltable portion and after melting are removable from the meltable portion of the bonding member.  The system further includes a power tool for affecting melting of the bonding member.
Patent CA-2116137-A1 (CA)
Title: Process and device for producing fiber-reinforced plaster plates
Inventor: BOLD JOERG
IPC: C04B11/00
Filed: 1992-08-20
Abstract: Fibre-reinforced plaster plates are produced according to a single layer, continuous filtration process. A suspension of hemihydrate plaster and wet processed lignocellulose-containing fibres, preferably from used paper, is dewatered on a travelling screen.  The apparent density of the plaster used is higher than 950 g/l, in the case of a .alpha.-hemihydrate plaster, and than 700 g/l, in the case of .beta.-hemihydrate plaster. In the RRSB-grid, the grain of the plaster has more than 40· gradient. .beta.-hemihydrate is aridized during calcination. The fibrous substance is pre-dewatered before being mixed with the plaster-fibre-suspension, then rediluted with water from the filtration process. The dewatering of the suspension is assisted in the last stage of vacuum filtration by vibrations or shearing forces. Devices for distributing the suspension and for generating the shearing forces are also disclosed.
Patent CA-2117007-A1 (CA)
Title: Process for the preparation of tertiary dialkylpolyhydroxy-amines
Inventor: WEINELT FRANK
IPC: C07H15/12
Filed: 1994-03-04
Abstract: Abstract Process  for the preparation of tertiary dialkylpoly-hydroxy-amines In the process described a secondary N-monoalkylpoly-hydroxy-amine is reacted with an aldehyde in a molar ratio of 1 : from 0.9 to 1.5 in water as solvent and in the presence of a metallic hydrogenation catalyst at a hydrogen pressure of from 10 to 150 bar and at a tempera-ture of from 70 to 150°C, preferably in two reaction steps,  to give the tertiary dialkylpolyhydroxy-amine. Using the process according to the invention, tertiary polyhydroxy-amines, preferably in the form of di-C1 to C6-alkylglycamines,  are obtained in a high yield and purity.
Patent CA-2120427-A1 (CA)
Title: Rubber compositions for vibration insulator rubbers
Inventor: YAMAMOTO KEISAKU
IPC: D06F55/00
Filed: 1994-03-31
Abstract: ABSTRACT OF DISCLOSURE     The present invention provides an ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber composition comprising: (A) an oil-extended ethylene-.alpha.-olefin-non-conjugated diene copolymer wherein the copolymer has an intrinsic viscosity [?] of 2.7 - 3.8 on measurement in xylene at 70°C prior to the oil extension, and the amount of the extensisn oil is in a range of 30 to 50 parts by weight per 100 parts by weight of the ethylene-.alpha.-olefin-non-conjugated diene copolymer; (B) carbon black in an amount of 50 to 100 parts by weight per 100 parts by weight of the ethylene-.alpha.-olefin-non-conjugated diene copolymer; and  (C) a process oil in an amount of 1/8 to 1/2 parts by weight per 1 parts by weight of the carbon black.  A vibration insulator rubber having a low dynamic/static ratio as well as a prolonged stretch fatigue life which is prepared from the vulcanizable ethylene-.alpha.-olefin-non-conjugated diene copolymer rubber composition.
Patent CA-2121930-A1 (CA)
Title: Packaging material and packaging containers produced therefrom
Inventor: ANDERSSON KURT
IPC: C08K3/00
Filed: 1994-04-22
Abstract: Disclosed is a packaging sheet comprising a core layer of thermoplastic and filler admixed into the thermoplastic, wherein the thermoplastic comprises a physical mixture of polypropylene and polyethylene, the polyethylene being provided in an amount which increases impact toughness at temperatures less than 10° C and constituting between about 28% and 50% by weight of the thermoplastic physical mixture.
Patent CA-2124638-A1 (CA)
Inventor: KASTINGSCHAFER GERHARD
IPC: F27B7/22
Filed: 1994-05-30
Abstract: In this tiltable supporting roller bearing according to the invention for supporting a rotary drum there are provided a freely rotatably mounted supporting roller and an appertaining bearing structure which is tiltably supported with respect to a stationary foundation plate with the aid of easily shifted support bearings which are arranged inclined against one another in such a way that the point of rotation of the line of contact between the supporting roller and the riding ring of the rotary drum lies with the vertical central axis of the supporting roller. With a particularly simple and reliable design, this construction makes it possible to compensate for skewing of the rotary drum riding ring and at the same time markedly to reduce or largely avoid undesirable consequences of the axial forces resulting from longitudinal movements of the rotary drum. In a first embodiment two supporting rollers with their bearing structures are combined to form a supporting roller set. The two bearing structures are connected to one another by at least one spacer element in order to maintain a constant spacing. In another embodiment, there is a stationary support element, to which each of the two bearing structures is connected by a spacer element.
Patent CA-2130245-A1 (CA)
Title: Gradated containment flaps in a disposable absorbent child's training pant
Inventor: SIGL WAYNE C
IPC: A61F13/15
Filed: 1994-08-16
Abstract: ABSTRACT OF THE DISCLOSURE            A disposable absorbent article includes a waste containment assembly that has a liner, outer cover, and an absorbent composite between the liner and outer cover, and a pair of gradated containment flaps operatively joined to the waste containment assembly.  Methods are provided for making the absorbent article.
Patent CA-2130757-A1 (CA)
Title: Intubation stylet
Inventor: SCHROEDER MICHAEL GEORGE
IPC: A61M16/04
Filed: 1993-03-29
Abstract: A stylet (12) for use in both oral and nasal endotracheal intubation comprises a flexible member (14), a collar (18) slidably mounted thereon, a handle (16) mounted at one end of and along the longitudinal axis of the flexible member (14) and a fixed-length filament (20) attached to a distal end (24) of the flexible member (14) and the collar (18). A portion of the stylet (12) is telescopically received within an endotracheal tube (30). The user may selectively deflect or induce curvature to the endotracheal tube (30) by applying force to the handle (16) along the axis of the flexible member (14) and inducing movement of the handle (16) with respect to the collar (18) when the filament (20) is under tension. Alternatively, the user may selectively deflect the endotracheal tube (30) by inducing movement of the collar (18) with respect to the handle (16) when the filament (20) is under tension.