baber/WOPTO huggingface dataset:
Patent AU-729658-C (AU)
Title: Screw threaded fastener and fastening system
Inventor: ROBERTS DAVID JAMES ALEXANDER
IPC: E04B1/38
Filed: 1998-02-09
Granted: 2003-04-10
Abstract: A screw threaded fastener (103) has an elongate shank (122) with a drilling tip (104) at one end and a head (123) at the other end. A screw thread extends along at least a part of the length of the shank. The trailing flank (116) of the thread subtends an angle relative to the axis of the fastener which approaches 90 DEG  and is greater than the angle subtended by the leading flank (115). The screw is for use in fixing sheets of material to thin metal battens (5) and the angle between the trailing flank (116) and the adjacent thin metal section (18) of the batten, is reduced in comparison to a conventional thread form, which lessens the distorting effect of the thread on the batten under relatively high pull-out loads. <IMAGE>
Patent CA-2000350-C (CA)
Inventor: BELIN FELIX
IPC: F23C10/18
Filed: 1989-10-10
Granted: 1993-07-06
Abstract: ABSTRACT OF THE INVENTION This invention pertains to a discharge restrictor secured to the lower end region of impingement members installed in the flue gas path of a circulating fluidized bed boiler. The discharge restrictor incorporates a pivotable baffle plate that prevents the flue gas from bypassing the impingement members yet allows the particles that are collected to gather in an adjacent storage hopper. The baffle plate is normally biased to block access to the storage hopper until a sufficient mass of particles collect on the baffle plate thereby overcoming this bias. In doing so, the plate temporarily pivots to the open position enabling the particles to advance towards the storage hopper.
Patent CA-2003391-C (CA)
Inventor: MURPHY CAROLYN S
IPC: A61K8/40
Filed: 1989-11-20
Granted: 1995-01-31
Abstract: ABSTRACT SILICONE HAIRSPRAY COMPOSITIONS Silicone hairspray compositions which give hair volume and hold  but with  a  soft  feel  are disclosed.   These  compositions comprise from about 0.05% to about 10.0% of a silicone gum; from about 0.05% to about 7.5% of a dispersing aid for the silicone gum which may be a surfactant emulsifier or a hydrophobically-modified clay suspending/anti-agglomerating agent; and a volatile carrier, such as ethanol.
Patent CA-2003633-C (CA)
Inventor: PEET WILLIAM J
IPC: F23K1/00
Filed: 1989-11-22
Granted: 1995-05-16
Abstract: A method of controlling the operation of a pulverizer includes detecting the type of fuel being supplied to the pulverizer. At  least  one characteristic of  the  fuel  is  determined  by  a combination of measurements and calculations.   One character-istic is moisture content which distinguishes one type of fuel, in particular,  one  type  of  coal,  from another.   The  feeding rate of the fuel to the pulverizer  is selected from a curve which plots primary air flow against percentage of rating for the  pulverizer.   This  curve  is  constant  for  the  pulverizer despite the types of fuel used.
Patent CA-2004031-C (CA)
Title: Coupling fluid separation membrane elements
Inventor: MINHAS BHUPENDER SINGH
IPC: B01D63/00
Filed: 1989-11-28
Granted: 2000-07-04
Abstract: An improved method is disclosed for coupling membrane elements o.f a fluid separation module in series. The improvement comprises providing flexible coupling members having two open ends and a passage between said ends; and securing the first end of a coupling member to the residual end of each membrane element (with the optional exception of the last in the series) and securing the second end of the coupling member to the feed end of the next membrane element in the series if any. Fluid from the residual end of each membrane element except the last may thus be directed to the feed end of the next membrane element. An improved fluid separation module employing such couplings is disclosed; as is an improved membrane element having a coupling member secured thereto.
Patent CA-2004698-C (CA)
Inventor: MICHEL WALTER
IPC: B60J7/08
Filed: 1989-12-06
Granted: 1992-05-12
Abstract: ABSTRACT OF THE DISCLOSURE      The present invention relates to a motorized drive system for covering and uncovering the top of an open truck box or the like and comprises a laterally operated roll tube for winding and unwinding a flexible cover over the top of a truck box.  One lateral edge of the cover is fixed to one side edge of the box opening, and the other lateral edge is attached to a roll tube.  A reversible rotary motor rotates the roll tube, in conjunction with an extensible pivot arm and a cable return mechanism utilizing a tapered grooved sheave to provide constant tension  and  to  facilitate  smooth  and  consistent rectilinear movement of the roll tube for winding and unwinding of the cover.
Patent CA-2006161-C (CA)
Title: Capacitive pressure sensor with minimized dielectric drift
Inventor: BULLIS ROBERT H
IPC: H01L29/84
Filed: 1989-12-20
Granted: 1999-03-16
Abstract: Pressure sensors utilizing capacitance variations to sense pressure variations of the silicon on-silicon type in which dielectric drift, which occurs in such sensors due to the changing characteristics primarily of the dielectric wall support layer (16) extending up from the silicon substrate (12) between it and the silicon diaphragm (11), is minimized by in turn minimizing the contribution of the dielectric layer to the total capacitance of the sensor (10), reducing the dielectric contribution to the capacitance from, for example, about fifty (50%) percent down to a range of no more than about twenty to twenty-five (20-25%) percent and down typically to sixteen to about ten (16%-10%) percent of the total capacitance or lower.  Three exemplary approaches are illustrated, namely, etching the outer edges of the dielectric layer, making the wall(s) it form(s) thinner (Fig. 2) reducing the horizontal thickness of the effective peripheral, lower edge(s) of the silicon diaphragm where it interfaces in contact with the wall(s) formed by the dielectric layer (Fig. 3); and/or reducing the horizontal thickness of the effective peripheral, upper edge(s) of the silicon base or substrate where it interfaces with the wall(s) formed by the dielectric layer (Fig. 4); and/or a combination of one or more of these approaches or  any  other  approach  that  minimizes  the  effective capacitive contribution of the peripheral dielectric layer to the total capacitance of the sensor and hence to long term drift.
Patent CA-2010582-C (CA)
Title: A tryptamine producing tryptophan decarboxylase gene of plant origin
Inventor: DE LUCA VINCENZO
IPC: C12R1/19
Filed: 1990-02-21
Granted: 1998-07-28
Abstract: Isolation  and  cloning  of cDNA sequence of the tryptophan decarboxylase gene from Catharanthus roseus and the development of the cDNA sequence in  a  plasmid vector capable  of  transforming cell lines that will produce the tryptophan decarboxylase enzyme.
Patent CA-2015572-C (CA)
Title: Centrifugal pump
Inventor: SOEDERGARD BENGT
IPC: F04D29/22
Filed: 1990-04-26
Granted: 1995-09-05
Abstract: The centrifugal pump having a closed type impeller with two cover discs and vanes therebetween.  The inner parts of the vanes cooperate with a cutting means within the pump inlet.  The lower cover disc together with a non-rotating insert part in the pump inlet creates a radial seal.
Patent CA-2022368-C (CA)
Title: Wave making resistance suppressing means in ship and ship provided therewith
Inventor: OSAWA MASAKAZU
IPC: B63B1/40
Filed: 1990-07-31
Granted: 1996-11-05
Abstract: The wave making resistance on a proceeding ship can be greatly decreased by providing the ship hull with at least one pair of fins mounted on the hull extending above and below the draft line, each fin being fixed at the front end line and the rear end of the fin outwardly extending making a certain fin-mounting angle of 2 to 25° with the hull surface.
Patent CA-2022530-C (CA)
Title: Track guiding guard
Inventor: MOTOMURA HIDETAKE
IPC: B62D55/14
Filed: 1990-08-02
Granted: 1995-10-31
Abstract: A track guiding guard for a crawler type vehicle which is mounted along the lower side of a track frame is disclosed.  The track guiding guard comprises a pair of left and right guard members which rotatably support track rollers.  Each guard member has a slanted bottom surface which defines a limit angle of inclination between the same and the upper surfaces of track shoes that face the bottom surface, the angle diverging laterally outward.  Each guard member further defines a predetermined gap between the inner side surface of the lower end thereof and the outer ends of track pins that face the inner side surface. The gap is so set that when the bottom surface of the guard member is seated on the upper surfaces of the track shoes, the inner side surface of the lower end of the guard member substan-tially comes into contact with the outer ends of the track pins.  Thus, the inclination of the vehicle is stably supported by the seating of the bottom surface of the guard member on the upper surfaces of the track shoes and the contact between the inner surface of the lower end of the guard member and the outer ends of the track pins.
Patent CA-2026074-C (CA)
Title: Polymeric diphenyldiamines
Inventor: TAZUMA JAMES JUNKICHI
IPC: C08G73/02
Filed: 1990-09-24
Granted: 2000-05-23
Abstract: This invention relates to a novel class of polymeric compositions which have molecular weights ranging from 300 to 3000 and are the reaction product of (a) an alkyl or cycloalkyl substituted diphenyldiamine and (b) a conjugated or nonconjugated dime. The polymeric diphenyldiamine compounds are particularly useful as an antiozonant in diene containing polymers.
Patent CA-2035695-C (CA)
Title: High infra red reflecting brown rutile pigment compositions
Inventor: MODLY ZOLTAN M
IPC: C09C1/36
Filed: 1991-02-05
Granted: 2002-07-02
Abstract: Desirable high infra red reflecting brown rutile pigment compositions are described which comprise from about 40 to about 50% by weight of titanium, from about 2.3 to about 4.5% by weight of manganese, from about 7.3 to about 11% by weight of tungsten, from 0.05 to about 5% of lithium and from about 0.1 to about 20% of cerium.      The invention also relates to the method of preparing the brown rutile pigment compositions and to the use of such pigments as colorants for polyvinyl halide compositions, and in particular, polyvinyl chloride compositions.
Patent CA-2036350-C (CA)
Title: Vertical band saw
Inventor: SPATH DIETER
IPC: B23D53/02
Filed: 1991-02-14
Granted: 2002-12-24
Abstract: To permit miter cuts clear through a workpiece, or for selected depths, a saw band carrier supports a pair of saw-band wheels above and below a workpiece support, and the saw-band wheel carrier is pivotable about a substantially vertical axis of rotation. The axis of rotation is preferably located at the initial cutting engagement point of an endless saw band looped about the saw-band wheels, and the pivoting position can be arrested at any desired pivoted or angular position. In addition, the saw band carrier can be arranged to tilt about an essentially horizontal tilt axis.
Patent CA-2041194-C (CA)
Title: System for reconstructing joints
Inventor: BRANEMARK PER INGVAR
IPC: A61F2/00
Filed: 1991-04-25
Granted: 1995-07-18
Abstract: A system for reconstructing joints, particularly wrist joints. The system comprises three main components. A first main component (1) with a front plate (2) to hold an an-choring member screwable into the bone tissue close to the joint, and at least one pin (5), partially hollow, pro-truding from the front plate (2) towards the bone tissue. A second main component (14) with a front plate (15) to hold an anchoring member (17) applied in the bone tissue close to the joint, and at least one pin (20), partially hollow, protruding from the front plate 15 towards the bone tissue. A third main component (33) comprising an artificial joint mechanism in the form of an elastomeric material which, by means of pins protruding from the joint mechanism, is intended to be positioned and secured in said hollow pins and/or attachment screws in the front plates (2; 15) of said first and second main components (1; 14) facing each other.
Patent CA-2041552-C (CA)
Inventor: FUJIWARA TAKAYUKI
IPC: B21D37/04
Filed: 1991-04-30
Granted: 1999-07-13
Abstract: A turret punch press (1) and a die exchange device (37) for the press (1) are disclosed.  The punch press (1) includes a turret (9) carrying die sets (29) in die set attaching areas (33) and a die exchanging device (37) having a plurality of housings (39) which move horizontally between the turret (9) and a die storage section (31) to take out and charge die sets (29) with the turret (9) and the die set storage section (31) to exchange the die sets (29) for next use.
Patent CA-2042656-C (CA)
Title: Audio delay detector
Inventor: EMMETT JOHN ROBERT
IPC: H04N7/04
Filed: 1991-05-15
Granted: 1995-10-24
Abstract: A system for the measurement of delay between a video signal and an audio signal includes a tone-burst generator (9) which marks an audio signal (3).  The mark is then used as a reference which is detected at both signals' destination (15) and the timing delay between the signals is displayed (19) and may be corrected (17,18).
Patent CA-2049249-C (CA)
Title: Tire chain installation tool for dual wheels
Inventor: PRIEST M DEAN
IPC: B60C27/22
Filed: 1991-08-15
Granted: 2002-06-25
Abstract: A tool is provided for installation of tire chains on the dual drive wheel assemblies having wheels with openings therein. The tool comprises a central elongate projection having a tool restraint opening at its inner extremity which is adapted for registry with two of the wheel rim openings and receives an implement extended through the wheel rim openings for establishing an interlocked relation between the wheel rims and the tool. A pair of generally U-shaped side projections are formed integrally with the central projection and extond in diverging rotation and in opposed aligned directions. Each of the side projections are provided with chain positioner elements adapted to extend radially inwardly along the side wall of the respective tire. The tool is provided with a central chain connector and said side chain connectors to which the central and side chain rails of the tire chain are attached respectively. The chain connector elements cause the tire chain to be wrapped about the dual wheel drive upon one revolution of wheel movement after which the tool is removed and the ends of the tire chain rails are locked in assembly for use.
Patent CA-2056881-C (CA)
Title: Lavatory cleaning block
Inventor: HUNG JOHN H C
IPC: C11D17/00
Filed: 1991-12-03
Granted: 1998-12-01
Abstract: A toilet cleaning block which releases a halogen disinfecting agent in a controlled, substantially constant rate for 2 to about 4 months of constant contact with water and is then completely dissolved in the water comprises an admixture of an agent which releases a halogen disinfecting agent when in contact with water, about 4 to 10% aluminum hydroxide based on the total weight of the block and up to about 1% by weight of a mold release lubricant, said admixture being in the form of a coherent solid resistant to internal water penetration having a density of 1.10 to 1.60 g/cc, a ratio of effective surface area to weight of about 1:1.05 to 1:1.25 and a crush fracturing strength of about 9-109 kg.
Patent CA-2062546-C (CA)
Title: Microwave transceiver using technique of multilayer printed circuits
Inventor: PERRET FRANCOIS
IPC: H04B1/59
Filed: 1992-03-09
Granted: 2002-05-14
Abstract: The disclosure relates to microwave transceivers.      The microwave circuits, namely the circuits relating to the transmission-reception part and to the filtering of the microwave transceiver, are mounted on one and the same multilayer printed circuit and their electromagnetic insulation comprises, firstly, elements of the printed circuit such as conductive tracks on one of the faces of the printed circuit, metallized holes drilled in the tracks and close to one another so as to fulfil the role of an electromagnetic barrier and, at least in the case of some of them, a conductive plate and, secondly, attached elements with, especially, a thick metal lattice surmounted by a lid, the lattice resting on the conductive tracks.
Patent CA-2068269-C (CA)
Inventor: VAN PUTTE ANDREW
IPC: B32B27/08
Filed: 1992-05-08
Granted: 2002-01-29
Abstract: A water soluble film suitable for packaging caustic chemicals has an outer layer of a water soluble polymeric material, and an inner layer of a polymeric material which is compatible with the contents of a package made from the film. An intermediate layer can optionally be included to contribute to the tensile strength, bulk, or abuse resis-tance, or some other property of the film. Water soluble fillers such as salt can optionally be added to one or more of the polymeric materials, prior to or during extrusion of the film, to improve the processability of the film or its rate of dissolution in water, or to add a pigment to the film.
Patent CA-2070049-C (CA)
Title: Bundle pack
Inventor: FOCKE HEINZ
IPC: B65D85/10
Filed: 1992-05-29
Granted: 1999-03-23
Abstract: A b s t r a c t : (referring to Fig. 1) A bundle pack, especially a cigarette carton, formed from  a plurality  of  cuboid packages which are wrapped in an outer wrapper made of cardboard, paper or plastic film has  to  be designed  such that the individual cigarette packages can be easily marked on one outer side without  opening  the  outer wrapper.  For  this  purpose,  the outer wrapper is provided with cut-outs which are located in the region of  the  outer sides  of the packages. Adjacent cut-outs (17) are delimited from one another by narrow webs (19) of  the  outer  wrapper (14).
Patent CA-2071730-C (CA)
Title: Humidifier device with delayed energization
Inventor: MARINO FRANK
IPC: F24F6/02
Filed: 1992-06-19
Granted: 2002-12-24
Abstract: A humidifier including a base defining a liquid reservoir; an electrically energized humidification device adapted to induce dispersion of liquid retained by the reservoir; a power supply for supplying electrical current to the humidification device; a control circuit connecting the power supply to the humidification device and including a switch operable in an active state to produce energizing current flow between the power supply and the humidification device and operable in an inactive state to prevent energizing current flow therebetween; and a sensing mechanism operatively coupled to the switch and adapted to sense the liquid level in the reservoir, the sensing mechanism adapted to provide the active state for the switch in response to a minimum liquid level in the reservoir and to provide the inactive state for the switch in response to a liquid level in the less than the minimum liquid level. Also included is a delay for delaying the energizing current flow between the power supply and the humidification device for a given period after the level of liquid in the reservoir reaches the minimum liquid level. The provision of a delay prevents the premature flow of current to the humidification device.
Patent CA-2072605-C (CA)
Title: Needle protecting assembly
Inventor: GIANAKOS ARTHUR
IPC: A61M39/04
Filed: 1991-08-30
Granted: 1999-04-20
Abstract: A needle protective assembly (10) includes a ratchet (20) and pawl (28) arrangement for permitting the unidirectional movement of a protective sleeve (14) along a body (12) of a dispenser, such as a hypodermic syringe. The sleeve (14) is adapted to cover a standard Y-site diaphragm (46), and includes a lock (26) to secure the sleeve to the Y-site while in use. The assembly may also include indicia on the exterior thereof to measure the amount of needle exposed beyond the end of the sleeve, if the sleeve is not in its fully extended position.  The assembly may further include a luer lock (34), for attaching the assembly to pre-existing standardized fittings.
Patent CA-2073407-C (CA)
Title: Dental material curing apparatus
Inventor: PATTEN RICHARD L
IPC: A61C13/15
Filed: 1992-07-09
Granted: 1998-06-09
Abstract: Light emitting apparatus (10) for curing photocurable dental material includes a handpiece (12) having a housing (26), a depending handle (28) and a detachable light guide (48). The light guide (48) is received in a head (30) connected to the housing (26). Rotational movement of the head (30) relative to the housing (26) also rotatably moves the light guide (48) so that the guide (48) may be turned by the same hand of the user that is grasping the handle (28) for improved manipulation and user comfort. A base (14) of the apparatus (10) includes an upright pedestal (106) that houses a device (102) for determining the intensity of light provided by the light guide (48).
Patent CA-2074739-C (CA)
Title: Deflecting forceps
Inventor: KAMBIN PARVIZ
IPC: A61B17/28
Filed: 1992-07-28
Granted: 2003-06-24
Abstract: A forceps apparatus is provided herein. The forcep apparatus comprises an elongated rigid tubular housing having a hollow interior comprising a bore with a longitudinal axis, the housing having a proximal end portion and a distal end portion and a length which is nearly the entire length of said forceps apparatus. The forceps apparatus further comprises a pair of forceps jaws extending beyond the distal end portion of the elongated rigid tubular housing. The forceps apparatus further comprises a manually-operable handle positioned at the proximal end portion of the housing for operating the forceps jaws, each such handle having a portion that is spaced laterally away from the longitudinal axis of the bore of the housing. The forceps apparatus further comprises a linkage extending through the bore between the handle and the forcep jaws for transmitting force between the handle and said forcep jaws during the operation of opening or closing of the forcep jaws. The forceps apparatus further comprises a cable positioned within the bore of the housing for moving the forcep jaws from a first position, wherein the forcep jaws extend in a direction which is parallel to, and generally aligned with, the longitudinal axis of the bore of the housing, to a second position, wherein the forcep jaws are positioned laterally away from the longitudinal axis of the bore of the housing, a cable end portion being permanently attached to the forcep jaws for movement therewith. The forceps apparatus further comprises a manually-operable actuator positioned at the proximal end of the housing and connected to the cable for operating the cable means. The handle and the actuator are configured for operation by hands of a user. The linkage further comprises biasing means which are rigidly supported at the distal end portion of the housing, extending from the bore of the housing for returning the forcep jaws to a position where they are aligned with the longitudinal axis of the bore of said housing.
Patent CA-2074922-C (CA)
Title: Method of manufacturing a washer
Inventor: LEE WEN-YUAN
IPC: B21K1/76
Filed: 1992-07-29
Granted: 1996-03-05
Abstract: A method of manufacturing a washer which includes the steps of:          (a)  feeding a metal wire into a die having a bearing face and a through hole which opens to the bearing face so as to permit the metal wire in the through hole to protrude out of the bearing face at a predetermined length; (b) punching the protruded metal wire against the bearing face to form a disc with a punching head which includes a core and a shell; (c) punching the disc to form a central hole on the disc by forcing the core out of said shell and into the through hole; and (d) retracting the punching head to allow the disc to separate from the metal wire.