baber/WOPTO huggingface dataset:
Patent CA-2087304-C (CA)
Title: Radial seal
Inventor: JOHNSTON DAVID E
IPC: F16J15/3244
Filed: 1993-01-14
Granted: 1999-11-23
Abstract: An annular radial seal has a sealing axis and a sealing lip of polymeric material for the engagement of the circumference of a shaft to be sealed. The sealing lip has circumferentially evenly distributed radially protruding ribs and is radially inwardly defined by a frustoconical inner surface, the diameter of which increases away from the space to be sealed. At that side of the sealing lip remote from the sealed space the inner surface defines a first angle with the sealing axis direction, which is 0.02 to 0.5 times as large the magnitude of a second angle defined by the inner surface and the sealing axis direction at the side of the sealing lip adjacent the sealed space. The ribs are formed by an undulation of the inner surface which extends only in circumferential direction along a circumferential line. The seal has excellent operating characteristics over a long service period, provides improved sealing results and reliably prevents leakage of the liquid present in the space to be sealed whether the shaft is stationary or rotating and independently of the direction of rotation of the shaft.
Patent CA-2089221-C (CA)
Title: Retractable spike assembly for footwear sole or heel
Inventor: KHAYAT RENE E
IPC: A43C15/14
Filed: 1993-02-10
Granted: 1996-07-09
Abstract: Disclosed is a retractable spike assembly insertable into a cavity made for this purpose in the bottom surface of a footwear heel or sole, the assembly comprising spikes that can be extended whenever needed, such as on icy roads, rock or wet grass and to be pulled in when they are not wanted, such as inside ahouse. The spikes are mounted on a carrier plate extending parallel to a bottom plate extending flush with the bottom surface of the heel or sole when the assembly is mounted in the cavity. A guide pin rigidly connected to the bottom plate in the middle of the same is used to guide the carrier plate up and down. The upwards movement of the carrier plate is achieved  with a compression spring mounted onto of the guide pin, the downwards movement being achieved with a cam held above the carrier plate. The cam is advantageously operated with a coin or any similar item thanks to a cylindrical peg inserted into a cylindrical through hole provided in a side wall of the cavity, the peg being held in the through hole by a locking pin. This retractable spike assembly is much simpler in structure and installation than the existing ones.
Patent CA-2092175-C (CA)
Inventor: YOKOMI TETSUSUKE
IPC: C01B13/11
Filed: 1992-07-27
Granted: 1998-04-21
Abstract: Un ozoneur à plaques capable d'éliminer la déformation de cellules de décharge des plaques et d'assurer une haute efficacité en fait de génération d'ozone quand il s'agit de générer de l'ozone à concentration et à pression élevées. Un ozoneur (10) dans lequel plusieurs cellules de décharge (11) sont empilées l'une sur l'autre est placé dans un appareil à pression (20). L'appareil à pression (20) est fourni avec du gaz sous pression dont la pression est égale ou presque égale à celle des matériaux gazeux qui sont fournis audites cellules de décharge (11). Ainsi, il y a peu ou pas de différence de pression entre l'intérieur et l'extérieur des cellules de décharge (11) et ces dernières ne sont donc pas sujettes à des déformations causées par des pressions intérieures et extérieures inégales. On utilise un gaz séché comme gaz sous pression de façon à prévenir une isolation médiocre causée par l'humidification ou la condensation.
Patent CA-2092919-C (CA)
Title: Epoxysuccinamic acid derivatives
Inventor: MURATA MITSUO
IPC: C07K5/062
Filed: 1991-09-27
Granted: 2001-08-07
Abstract: Epoxysuccinamic acid derivative represented by general formula (I), which is useful for treating myolysis, pharmaceutical-ly acceptable salt thereof, and intermediate therefor, wherein R1 represents C1 to C10 alkyl, phenyl or benzyl.
Patent CA-2106179-C (CA)
Inventor: PAGEL GENE
IPC: B66C23/26
Filed: 1993-09-14
Granted: 1996-09-24
Abstract: A crane gantry assembly includes a gantry pivotally connected to a crane bed,  a  backhitch pivotally connected to the gantry and detachably connected to the crane bed, and a control link pivotally connected to the backhitch and to the crane bed.  The control link is used when maneuvering the backhitch between raised and retracted positions, such as when the crane is set up or taken down for transport.
Patent CA-2106401-C (CA)
Inventor: CLARKE ROGER L
IPC: H01M4/86
Filed: 1992-02-19
Granted: 2004-11-30
Abstract: A particulate composition having improved stability in typical electrolytes consisting essentially of Magneli phase substoichiometric titanium oxides.
Patent CA-2109674-C (CA)
Inventor: MENCHETTI ROBERT J
IPC: E04B2/78
Filed: 1993-11-22
Granted: 2000-05-09
Abstract: An area separation wall having modified H-studs with a web which includes a center portion perpendicular to the modified H-stud flanges and two side portions which are adjoined to the flanges at an angle of about 600. Gypsum core boards with beveled edges are inserted into the two opposed channels of the modified H-studs with the edges of some of the core boards conforming,to and abutting the side portions of the modified H-studs.
Patent CA-2110024-C (CA)
Title: Non-aqueous electrolyte cell
Inventor: HAYASAKA TOYOO
IPC: H01M50/119
Filed: 1993-11-25
Granted: 1999-06-01
Abstract: An electrochemical cell is disclosed wherein product cost of positive electrode cases is reduced and the productivity of the electrochemical cell improved by suppressing anodic oxidation of the positive electrode case, without an aluminum layer inside of the positive electrode case being required. For electrochemical cells with non-aqueous electrolytes, for the materials for the positive electrode case, a high grade corrosion resistant stainless steel or high corrosion resistant austenitic ferrite stainless steel is used. The cost of the high corrosion resistibility positive electrode case is decreased and a high pressure tightness electrochemical cell can be manufactured.
Patent CA-2110187-C (CA)
Title: Transistor mounting clamp assembly
Inventor: TESTA MARTINA B
IPC: H01R4/38
Filed: 1993-11-29
Granted: 1999-09-07
Abstract: A transistor mounting clamp assembly for ensuring reliable electrical connection of a power transistor electrical connector tab (typically the collector tab) to a metallized portion of an associated printed circuit board. The transistor mounting clamp assembly comprises a top and bottom clamp dimensioned for sandwiching therebetween the transistor tab. The clamp assembly uses a machine screw and associated Belleville washer for maintaining this urging relationship even when the components expand and contract. The bottom clamp preferably has a stepped region or other surface discontinuity for securing the connector tab thereto. The clamp assembly further comprises an extending tab which is secured to the top clamp and which has a second region for providing electrical connection to the metallized portion of the printed circuit board by soldering, or other means. The overall transistor mounting clamp is able to withstand thermal expansion and contraction associated with intermittent operation of the associated power transistor and is also able to make reliable electrical connection to associated tabs of matching network elements typically used in transistor amplifier applications associated with ultra-high frequency and microwave operations. The clamp assembly can also be used to secure electrical connector tabs of other typically high-powered devices, and thus is not limited to power transistor applications.
Patent CA-2111126-C (CA)
Inventor: MYSZKA KEVIN
IPC: F16D1/06
Filed: 1993-12-10
Granted: 1997-03-25
Abstract: A generally cylindrical hub spacer having inwardly and outwardly extending protrusions is used to rotationally interconnect a deck pulley to a spindle assembly in a lawn mower.
Patent CA-2111799-C (CA)
Title: Attachment device
Inventor: HOFLE SIEGFRIED
IPC: F16B37/04
Filed: 1993-12-17
Granted: 2004-08-24
Abstract: An attachment device secures structural components to a fastening rail having a slot-like opening. The attachment device includes a flexural member to afford better handling. The flexural member is deflectable in the axial direction as well as in the radial direction. A snap-in connection of the attachment device to the fastening rail is achieved by the outside contour of a radially spring deflectable region of the flexural member which has a dimension greater than the width of the slot-like opening. An elastic axially extending region of the flexural member provides an axial prestress between the basic member and the intermediate member, so that accidental detachment of the attachment device positioned in the fastening rail is prevented.
Patent CA-2111852-C (CA)
Title: Applying a fluoropolymer film to a body
Inventor: THOMAS THOMAS R
IPC: C08J7/12
Filed: 1992-06-19
Granted: 2004-08-31
Abstract: A thin fluoropolymer film is covalently bonded to a microporous ptfe film to make a bilayer for separation, filtration or reverse osmosis, by exposing the microporous film to perfluorocyclohexane under plasma.
Patent CA-2112348-C (CA)
Inventor: NGUYEN GIA VAN
IPC: B60C3/00
Filed: 1993-12-23
Granted: 2001-02-20
Abstract: An improved radial ply pneumatic tire 30 is described. The improved tire 30 has a first annular surface 23 located between the heel 22B and toe 22A of each bead 33,53,63 and a second surface 24 extending radially outwardly from the bead heel 22B. The first surface 23 is designed to be in contact with the bead seat 42 of the design rim 40 when the tire 30 is mounted and inflated to normal pressure. The first annular surface 23, when the tire 30 is unmounted, forms an average angle .beta. with the axis of the tire, when the beads 33,53,63 are axially spaced a distance D equal to the design rim width. The average angle .beta. is at least three degrees greater than the angle formed between the mating bead seat 42 of the design rim 40 and the axis of the tire. The second surface 24 is designed to be in contact with an annular flange 44 portion of the design rim 40 when the tire is mounted and inflated to normal pressure. The second surface 24A is inclined relative to a plane P perpendicular to the axis of rotation, at an angle .alpha. at least three degrees less than the angle formed between the rim flange 44 and the plane P.      Preferably the angle a is in the range of 3° to 20°) more preferably 3° to 15° while the angle .beta. is in the range of 8° to 25°, more preferably 8° to 20°.      The angular relationships relative to the design rim flange 44 permit the bead 33,53,63 and lower sidewall 21B of the tire 30 to rotate slightly upon mounting to the design rim 40, thereby improving the stiffness and handling characteristics of the tire 30.
Patent CA-2114912-C (CA)
Inventor: SMITH HERBERT E
IPC: F23M9/02
Filed: 1994-02-03
Granted: 1996-11-26
Abstract: A water heater comprising a tank defining a water chamber, a combustion chamber for heating water in the water chamber, and a combustion air inlet pipe including an outlet end communicating with the combustion chamber.  The inlet pipe also includes an inlet end having a longitudinal axis, and a plate in the combustion air inlet pipe adjacent the inlet end, which plate extends outwardly of the inlet end along the longitudinal axis.
Patent CA-2117258-C (CA)
Title: Transfer tube material flow management
Inventor: ANDERSON THOMAS M
IPC: F04B11/00
Filed: 1994-04-06
Granted: 2005-09-13
Abstract: A system for the transport of high solids materials such as concrete includes a positive displacement pump, a pipeline connected to the pump and a valve in the pipeline located downstream from the pump for preventing material flow through the pipeline when the valve is in a closed position. The valve is closed at the end of each pumping stroke to prevent material flow through the pipeline. The pressure of material on the pump side of the valve is sensed. During a subsequent pumping stroke, the valve is opened when sufficient pressure exists on the pump side of the valve to ensure that material will flow in a positive direction through the pipeline.
Patent CA-2120167-C (CA)
Inventor: HETTLAGE ECKART
IPC: H01P1/12
Filed: 1994-03-29
Granted: 2003-06-17
Abstract: A coaxial switch for making or breaking an electric contact between inner conductors of coaxial cables includes a wall component defining an inner space into which end portions of the inner conductors project and a contact guiding assembly including first and second parallel-spaced spring diaphragms each having an outer peripheral portion and a mid portion; one portion being fixedly held and the other portion being displaceable in a switching direction towards or away from the inner conductor ends. The contact guiding assembly further has first and second leaf springs provided in the diaphragms. Each leaf spring has a first segment connected to a respective spring diaphragm for hinging displacements relative thereto; and a second segment hingedly connected to the first segment. The first and second segments are oriented such that motion components of the two segments transverse to the switching direction are opposite one another. A support element is mounted on the second segment and passes with a clearance through an aperture in the wall component and projects into the hollow space, and an electric contact element is carried by the support element for making or breaking electric contact between the inner conductors. A drive arrangement displaces the contact guiding assembly in the switching direction.
Patent CA-2121175-C (CA)
Inventor: BAALS KIMBERLY ANN
IPC: H04M1/2747
Filed: 1994-04-13
Granted: 1998-06-16
Abstract: A softkey directory for use in a telephone  terminal is arranged such that a user of the terminal is prevented from entering the same name identifier at more than one softkey label. The directory is further arranged such that the user of the telephone terminal also is prevented from entering a telephone number without anassociated name identifier and from entering a name identifier without an associated number.
Patent CA-2124860-C (CA)
Title: Retractable safety penetrating instrument for portal sleeve introduction
Inventor: YOON INBAE
IPC: A61B19/00
Filed: 1992-11-25
Granted: 1998-12-15
Abstract: A retractable safety penetrating instrument (30) for introducing a portal sleeve (34) into a cavity in the body includes a portal sleeve (34) and a penetrating member (32) disposed within the portal slee ve (34) and supported in a manner to automatically move proximally from an extended position wherein a sharp distal end (42) of the penetrating member (32) protrudes from the portal sleeve (34) to a retracted position wherein the sharp distal end (42) of the penetrating member (32) is protected in response to distal movement of the retractable safety penetrating instrument (30) upon pe netration into a cavity in the body. A retracting mechanism moves the penetrating member (32) proximally and is normally locked in a position preventing proximal movement of the penetraing member (32) and is released by distal movement of an operating member to trigger retraction of the penetrating member (32).
Patent CA-2128456-C (CA)
Title: A work train for replacing old sleepers of a track with new sleepers
Inventor: THEURER JOSEF
IPC: E01B29/10
Filed: 1994-07-20
Granted: 1999-04-27
Abstract: A work train (1) for replacing old sleepers (12) of a track (5) with new sleepers (30) consists of a plurality of loading wagons (3) for storing old and new sleepers (12,30), arranged one following another in the longitudinal direction of the train and designed for mobility on a track, a device (10) for pulling out old sleepers and a crane (18) designed for mobility in the longitudinal direction of the train and having a sleeper gripper (19) for picking up and transporting the sleepers. Provided at one end of the work train (1) is a sleeper transporting device (32) with a sleeper gripper (36) which is vertically adjustable by means of drives (34) for depositing the new sleepers (30) stored on the loading wagons (3) on the track (5).
Patent CA-2129278-C (CA)
Inventor: MUNTENDAM HENDRIK-JAN
IPC: B29C48/14
Filed: 1994-08-02
Granted: 2002-05-14
Abstract: A molded structure 1 produced by extrusion, such as an expanded plastic foam, a sheet, a profile or the like, contains at least 10% by volume of open cells 2, 4 which have a polyhedron-like shape and are adjacent to one another. A higher temperature during the extrusion in comparison with the extrusion of thermoplastic molded structures having a closed-cell structure results in deformation-free opening of the cells. Webs 3 of cell walls 5, 6 remain intact in shape whether they have orifices 7 or no passages, so that the mechanical strength of the cell skeleton or of the space matrix is retained.
Patent CA-2130451-C (CA)
Inventor: JACKSON GEORGE W
IPC: E04G11/48
Filed: 1993-12-23
Granted: 2006-08-22
Abstract: A foot or top plate assembly for a shoring structure or tower comprises a wedged pin (52), a screw jack (28) having an end adapted to receive the wedged pin in a fiction fit, a foot plate (38) having a first support (40, 42) for receiving the wedged pin (52) in a friction fit and a second support (51) for supporting the wedged pin. The first and second supports adapted to receive the hollow end in a sliding fit. The wedged pin (52) connects the foot plate (38) to the screw jack (28), whereby as the wedged pin is moved between an engaged position and a disengaged position the base plate moves relative to the screw jack.
Patent CA-2132759-C (CA)
Inventor: GEE GRAEME
IPC: E04B9/18
Filed: 1994-09-23
Granted: 1998-11-03
Abstract: The present invention comprises a levelling clip for use during the installation of suspended ceiling systems. The levelling clip includes a base portion, rear retention means and front retention means for attaching the clip in sliding engagement to the wall angle moulding. The clip of the present invention provides a faster and easier means of installing a suspended ceiling system including levelling and squaring the pattern of main grid members and cross members of a suspended ceiling system.
Patent CA-2133913-C (CA)
Inventor: LANGLEY ROBERT W
IPC: A61M1/30
Filed: 1994-10-20
Granted: 1999-02-02
Abstract: A blood component collection system with optimization capabilities.   In one embodiment, process parameters are derived  from  an  input/configured  predetermined  blood component yield and which is based upon the maximization of at least one process parameter.   Thereafter,  the blood component collection procedure  is performed with these derived process control parameters.  In another embodiment, process  parameters  are  derived  from  an  input  total procedure time from a maximized value for at least one of the other process control parameters so as to  maximize blood component yield in this fixed time.  Thereafter, the blood component collection procedure  is performed with these derived parameters.
Patent CA-2134490-C (CA)
Inventor: FITTOCK JOHN E
IPC: C22B3/20
Filed: 1994-10-27
Granted: 2000-05-23
Abstract: A process for the preparation and purification of a cobalt intermediate from a cobalt sulphate solution containing cationic and anionic impurities, including the successive steps of: (i) reacting the cobalt sulphate solution with an organic reagent to extract unwanted cationic impurities from the sulphate solution; (ii) extracting the cobalt from the sulphate solution with an organic reagent, to create a cobalt loaded organic phase substantially free of all anionic impurities; (iii) stripping the cobalt loaded organic phase with a high strength ammoniacal ammonium carbonate solution, to create an ammoniacal ammonium carbonate strip liquor rich in cobalt II ammines; (iv) converting the cobalt II ammines to cobalt III tetrammines; (v) extracting the majority of nickel from the cobalt rich ammoniacal liquor with a suitable organic reagent; and (vi) recovering the cobalt from the cobalt rich ammoniacal liquor.
Patent CA-2134580-C (CA)
Title: Synchronized etalon filters
Inventor: CHUNG YUN C
IPC: H04B10/00
Filed: 1994-10-28
Granted: 1999-04-06
Abstract: A method for synchronizing an etalon to a preselected set of optical frequencies includes the step of generating a transmission spectrum for an etalon having a characteristic free spectral range that is a function of its effective length.  The optical frequencies for the transmission spectrum are provided by two optical reference frequencies such as produced by a first and second frequency locked laser.  The effective length of the etalon is set in relation to the optical reference frequencies.
Patent CA-2138029-C (CA)
Inventor: SCHWENT DALE GERARD
IPC: H01P5/04
Filed: 1994-04-05
Granted: 1998-09-22
Abstract: (see fig.1) An apparatus and method for varying coupling of a radio frequency (RF) signal (408). This is advantageously used for increasing the dynamic range of a power detector (406;) in an automatic power level control loop (403) of a transmission unit (404), while maintaining unit efficiency at higher power levels. This is accomplished by selecting between a first operating mode of the RF coupler (405) having strong coupling, responsive to a first predetermined power level, such that the RF coupler (405) produces a first coupled RF signal (509) responsive to the RF signal (408) and a second operating mode of the RF coupler (405) having weak coupling, responsive to a second predetermined power level, such that the RF coupler (405) produces a second coupled RF signal (510) responsive to the RF signal (408).
Patent CA-2140153-C (CA)
Inventor: ZIEGLER ELDON W
IPC: G10K11/178
Filed: 1992-07-14
Granted: 1998-10-13
Abstract: A simple, low cost active noise cancellation system employing a delay and actuator estimator (35), a gain determination (34), a gain (33) and speaker (36) that cancels stationary random noise such as that encountered on a rangehood fan.
Patent CA-2140717-C (CA)
Inventor: MATSUZAKI YUTAKA
IPC: H02G7/12
Filed: 1995-01-20
Granted: 1999-08-03
Abstract: A top phase transmission line and bottom phase transmission line are stretched between support steel towers so that the bottom phase transmission line is positioned below the top phase transmission line. Each of the transmission lines has at least two conductors, which conductors are arranged to be substantially parallel and are separated by a substantially constant distance by interconductor spacers. An intermediate phase transmission line may be arranged between the top phase transmission line and bottom phase transmission line as well. Such transmission lines are multiconductor transmission lines. In these multiconductor transmission lines, the conductor positioned at the left side in the top phase transmission line and the conductor positioned at the right side in the intermediate phase transmission line or bottom phase transmission line directly below it are connected by a first interphase spacer made of an insulator. Further, the conductor positioned at the right side in the top phase transmission line and the conductor positioned at the left side in the intermediate phase transmission line or bottom phase transmission line directly below it are connected by a second interphase spacer made of an insulator. By this, galloping in the transmission lines can be suppressed.
Patent CA-2140824-C (CA)
Inventor: MORIMOTO TAKAO
IPC: C08J3/24
Filed: 1995-01-26
Granted: 1999-12-28
Abstract: A curable resin composition utilizing as the crosslinking mechanism thereof an acid catalyzed addition reaction of a cyclic alkylenecarbonate group with an alcoholic hydroxyl group is disclosed. The composition contains a compound or polymer having a plurality of 6-membered cyclic alkylenecarbonate groups and a polymer having a plurality of alcoholic hydroxyl groups. A polymer having pluralities of the cyclic alkylenecarbonate and hydroxyl groups in a single entity may also be used. The composition cures at room or elevated temperatures depending upon the acidity and amount of particular acid catalyst incorporated to the composition.