baber/WOPTO huggingface dataset:
Patent CA-2033864-A1 (CA)
Inventor: TAKAHASHI HAREO
IPC: F04B39/10
Filed: 1991-01-09
Abstract: The present invention is directed to an improved valved dis-charge mechanism of a refrigerant compressor, The compressor includes a compressor housing having at least one chamber in which successive strokes of sucking, compressing, and discharging a refrig-erant gas is repeatedly performed. The chamber is linked to an out-side chamber through a conduit formed in the compressor housing. A valved discharge mechanism is disposed at one end opening of the conduit which opens to the outside chamber. The valved discharge mechanism includes a discharge reed valve which by means of a bend-ing movement blocks and opens the one end opening of the conduit. The discharge reed valve has a predetermined value of elastic modulus which allows the discharge reed valve to keep blocking the one end opening of the conduit until the pressure in the chamber reaches a predetermined value. A stopper member is disposed in the outside chamber to limit the bending movement of the discharge reed valve toward the direction in which the refrigerant gas leaves from the one end opening of the conduit. An auxiliary discharge reed valve having a small curvature is proximately disposed on the discharge reed valve opposite to the one end opening of the conduit so as to enhance the value of the elastic modulus  of the discharge reed valve while the discharge reed valve is bent in the direction in which the refrigerant gas leaves from the one end opening of the conduit.
Patent CA-2034269-A1 (CA)
Title: Ventilating arrangement for the cab of a vehicle
Inventor: WAGNER JURGEN
IPC: B60H1/00
Filed: 1991-01-16
Abstract: VENTILATING ARRANGEMENT FOR THE CAB OF A VEHICLE                  Abstract of the Disclosure A ventilating arrangement for a vehicle cab draws air in from outside the cab through the cab roof.  The air flows through at least one generally vertical air duct downward to the vicinity of the cab floor, and supplied from there to various outlets in the interior of the cab.  In order to allow use of air filters with relatively large filter area and as convenient accessibility for easy replacement, a filter housing is connected to the lower region of each generally vertical air duct.  Each filter housing encloses an air filter that is accessible from the exterior of the cab.  The filter is oriented in a generally vertical direction.  Preferably, each corner post of the cab is provided with an air duct which is connected to a filer housing attached to the inner fenders of the rear wheels.  Each filter housing is closed by a removable cover accessible from the rear of the vehicle.
Patent CA-2034733-A1 (CA)
Title: Fire suppression system for a decorative tree
Inventor: CAWLEY DENNIS
IPC: A47G33/08
Filed: 1991-01-22
Abstract: ABSTRACT OF THE DISCLOSURE      A fire suppression system for a decorative tree, such as a Christmas tree, of the present invention wherein, disguised, for example, as a Christmas gift or incorporated as an integral part of the stand for the tree itself, there is provided a canister with a dry, substantially inert chemical, such as Halon, or similar fire suppressant substance, is disclosed.  The fine suppressant substance is forced, e.g., by the application of pressure, when a heater smoke-sensitive sensor, released by a solenoid valve, is used to project the dispersant through a tubular plenum to a dispersant nozzle contained within, or as an integral part of, an ornament, e.g., a star, atop of the decorative tree.          The flow of the fire suppressant fluid is preferably directed outward from a plurality of oval-shaped holes, preferably at least four such oval-shaped holes, which encircle a cylinder-type nozzle so as to provide dispersant to all directions surrounding the tree.  The use of oval-shaped dispersing holes, or exit holes, for the fire suppressant substance has been discovered to have the beneficial effect of maximizing the flow of the fire suppressant substance by properly directing in a downward and outward direction thereby efficiently covering the tree in a time-effective manner.
Patent CA-2035036-A1 (CA)
Title: Process for the preparation of phenyl-guanidine derivatives
Inventor: HUSZAR CSABA
IPC: C07C323/44
Filed: 1990-06-21
Abstract: ABSTRACT The invention relates to a process for the preparation of guanidine-derivatives of the general formula (I)   (I) wherein R means a C1-4 alkyl group, M means a hydrogenatom, sodium-, potassium-, or calcium ion, A means an -S-, -SO- or -SO2- group; in a way, that th.iocarbamide derivatives of the general formula (II)   are oxidized optionally in the presence of an inorganic or organic solvent and the sulfonic acid derivative of the general formula (III)   obtained is reacted with an aniline derivative of the general formula (IV)   (IV) optionally in the presence of an inorganic or organic solvent.
Patent CA-2036250-A1 (CA)
Title: Foil roof of a hall, especially of a greenhouse
Inventor: BUCHNER JOSEF
IPC: A01G9/24
Filed: 1991-02-13
Abstract: Abstract Foil roof of a hall, especially of a greenhouse, in the form of a ridge roof or preferably a barrel roof, comprising a plurality of transverse roof girders distanced from each other and spanned by a one- or two-walled foil, wherein for fast opening and closing of the roof respective carriages are arranged on several or all of the transverse roof girders, the carriages being displaceable along the latter and interconnected through a profiled bar to which the foil is affixed at one lateral foil edge while being kept stationary at its opposite lateral edge. For driving the carriages, a pulling train embodied by a belt or rope may be secured to at least one carriage, or to the profiled bar, and may be wound onto, or unwound from, drive pulleys driven by a motor.
Patent CA-2038404-A1 (CA)
Title: Hysteresis-compensated weighing apparatus and method
Inventor: GRIFFEN NEIL C
IPC: G01D3/02
Filed: 1991-03-15
Abstract: A digital scale is compensated for hysteresis by characterizing an envelope pattern of increasing and decreasing linearity attributes thereof defining the limits of hysteresis error. Polynomial expressions define this envelope pattern and a correction procedure is developed which is based upon offsets from the envelope pattern as well as the merging characteristics of deviations evidenced from complex loading histories. The latter historical data are used to identify loading progression transitions necessary for the generation of correction values.
Patent CA-2038990-A1 (CA)
Inventor: LELONG DOMINIQUE
IPC: F24B1/195
Filed: 1991-03-25
Abstract: Elle comprend un socle creux (1) qui est relié d'une part à un conduit d'évacuation (9), d'autre part à des collecteurs de fumées (8) qui débouchent vers le haut au sommet d'une coiffe relevable (2) à parois transparentes. Entre cette coiffe (2) et le socle (1) est interposé un collecteur d'admission (3) qui est percé de lumières supérieures (3a) et d'au moins une ouverture latérale (3b). Fig. 2
Patent CA-2039947-A1 (CA)
Title: Reduced calorie pressed tablet with improved mouthfeel
Inventor: SHAW JAMES J
IPC: A23L1/308
Filed: 1991-04-08
Abstract: ABSTRACT OF THE INVENTION        A method of agglomerating polydextrose and preparing reduced-calorie confectionery tablets including agglomerated polydextrose  is  disclosed.   The method  includes  spraying polydextrose  powder  or  polydextrose  and  a  bulking  agent homogeneously mixed together with a binding solution under fluidized-bed  agglomeration  conditions  to  increase  the particle size of the polydextrose providing a confectionery pressed  tablet  feedstock  which  flows  readily  and  has significantly  improved  compressibility.    Confectionery tablets  made  in  accordance  with  the  present  method  are uniform  in  weight,  and  appearance.    The  confections  are resistant as well as to capping, chipping and less likely to crumble when residing in the oral cavity.
Patent CA-2043558-A1 (CA)
Inventor: KERSUSAN JEAN-PIERRE
IPC: H01H33/985
Filed: 1991-05-30
Abstract: A three-phase circuit breaker with self-extinguishing expansion and rotating arc comprises an arc extinguishing chamber per pole housing a pair of stationary and movable contacts, a coil to rotate -the arc, and an exhaust channel in at least one contact to provide on opening a communication and gas outflow between the extinguishing chamber and the expansion volume of an enclosure filled with SF6. The extinguishing chamber has a square or rectangular cross-section to resorb the gas plug after braking of the gas rotation movement, and improve stirring of the gas in the extinguishing chamber.
Patent CA-2044204-A1 (CA)
Title: Stackable refuse container system
Inventor: EVANS DAVID
IPC: B65F1/16
Filed: 1991-06-10
Abstract: ABSTRACT        Disclosed is a stackable refuse container system which takes up approximately the same space as a conventional refuse container, yet allows separation of recyclable materials from non-recyclable materials.  The system includes a plurality of stackable containers, each container being adapted to support another container thereover.  Each container may have a lid which is operable in the stacked condition.  The system may further comprise a transport device upon which the stacked containers may be located, the transport device allowing move-ment of the stacked containers to the curbside for pick-up.
Patent CA-2044759-A1 (CA)
Title: Dental x-ray film developing machine
Inventor: TANAKA HIROYUKI
IPC: G03D3/10
Filed: 1991-06-17
Abstract: ABSTRACT     A dental X-ray film developing machine is de-scribed.  The machine has a cylindrical housing, a motor fixed on the housing, an arm for being driven by the motor, and a film holder for being brought into detachable engagement with the arm whereby development processing of a film mounted on the film holder is con-ducted while the film holder makes a full turn within the housing.  Plural tanks containing processing solu-tions are removably arranged along a peripheral wall of the housing.  A film-holder-inserting portion is lo-cated before the developer-containing tank so that the film holder with the film mounted thereon can be posi-tioned at a point where the film holder can be brought into engagement with the arm which is being driven.  A device for detaching the film holder from the arm is provided after the last tank.  The labor and time re-quired for the attachment of the film holder on the arm and also for its subsequent detachment from the arm have been obviated.  The removable arrangement of the tanks can facilitate replacement of processing solu-tions.
Patent CA-2047397-A1 (CA)
Title: Simplified hinge apparatus and associated joining methods
Inventor: MCKIM PAUL D
IPC: E05D7/00
Filed: 1991-07-18
Abstract: JRK/dlb ABSTRACT OF THE DISCLOSURE        A cover plate is operatively secured to the body of a housing structure, over an access opening therein, by a pair  of  button  clinch  joints  which  interlock  two  tab portions of the cover plate with two wall portions of the housing  body  positioned  on  opposite sides  of  the access opening. The button clinch joints function as hinges which permit the cover plate to be pivoted between closed and open positions  to  respectively  block  and  unblock  the  access opening.  In addition to other manufacturing and operational advantages,  the  use  of  button  clinch  joints  as  hinge structures provides for very rapid and economical joining of the  housing  body  and  cover  plate,  and  eliminates  the necessity for welding or in any manner puncturing the cover plate or housing body to effect the cover plate attachment.          The elimination of both welding and puncturing,  in turn, advantageously permits the use of pre-coated cover plates and housing bodies since the clinching process used to form the cover plate hinge joints does not appreciably mar these pivotally  connected  components.   Moreover,  the  pivotally interconnected cover plate and housing body remain securely affixed to one another without the use of screws, rivets or any other additional fastening parts.
Patent CA-2048701-A1 (CA)
Inventor: REED CLAYTON L
IPC: B01D29/11
Filed: 1991-08-08
Abstract: An end connector system for connecting a plurality of filter units in series has first and second end connectors secured to the ends of filter units.  Each end connector has a base with a sealing surface and a connecting portion for engagement with the connecting portion of another end connector.  The connecting portions have overlapping surfaces that overlap in the radial direction of the bases when the connecting portions are engaged with one another.  A seal member is disposed between the first and second end connectors and is pressed into sealing contact with the sealing surfaces of the bases by a compression-generating member such as a tie rod.  When the sealing surfaces are in sealing contact with the seal member, the overlapping surfaces of the connecting portions are separated from one another.  As a result, all forces for producing a liquid-tight seal between the end connectors are generated by the compression-generating member and not by the end connectors themselves.
Patent CA-2051271-A1 (CA)
Title: Display tray
Inventor: SMITH RAYMOND D
IPC: B65D5/50
Filed: 1991-09-12
Abstract: In accordance with the present invention, there is disclosed a display tray having a tray body with a bottom wall, opposing front and rear walls and an open top.  At least one support wall is spaced between the rear walls and extends upward from the bottom wall to define a plurality of article carrying rows.  A plurality of openings are positioned in the front, rear or support walls adjacent to the bottom wall for receiving projections of articles to be carried in the display tray and retaining the articles in the article carrying rows.  In one embodiment, a bottom wall flap member overlies the bottom wall and is folded to form at least one support wall spaced between front and rear walls and extending upward from the bottom wall to form a plurality of article carrying rows.  The bottom wall flap member includes front and rear upward extending flap wall members positioned adjacent the interior of respective front and rear walls of the tray body.  The front and rear flap wall members and the support walls include a plurality of openings adjacent the bottom wall and dimensioned for receiving projections of articles to be carried in the display tray and retaining the articles in the article carrying rows.
Patent CA-2054278-A1 (CA)
Title: Suction air filter for combustion engines
Inventor: BEHRENDT BERNHARD
IPC: F02M35/04
Filed: 1991-10-25
Abstract: SUCTION AIR FILTER FOR COMBUSTION ENGINES    Abstract A suction air filter for a combustion engine includes a filter housing for receiving a filter insert and an attachment housing to which the filter housing is attached.  The filter housing has a coupling end for coupling with a corresponding coupling end of the attachment housing.  The suction air filter has an unfiltered air intake and a pure air outlet.  A plurality of cam members are mounted on the outside of the filter housing near the coupling end thereof, and a plurality of cam elements are mounted on the outside of the attachment housing near the coupling end thereof.  A rotatable coupling ring is mounted to receive the coupling ends of the filter housing and the attachment housing, and the coupling ring carries wedge members which are engagable with the cam members and the cam elements to releasably couple together the coupling ends of the housings.  Dust protection shoulders or labyrinth seals are provided on both sides of the coupling ring to prevent dust from penetrating in the closure area of the attachment portion and the housing.  A turning of the coupling ring effects a fixing of the filter housing to the attachment housing.
Patent CA-2054859-A1 (CA)
Inventor: FUJISAKI HIROTAKA
IPC: B65G47/52
Filed: 1991-11-04
Abstract: A down converter device is used in a satellite communication system to convert a microwave signal to an intermediate frequency signal by the use of a standard signal having a frequency range of several to several tens of MHz, and to apply the intermediate frequency signal to a next stage component.  The down converter includes a mixer for producing the intermediate frequency signal which is indicative of the frequency difference between the standard signal and the microwave signal.  A separator includes a first terminal for receiving the intermediate frequency signal, a second terminal for producing and supplying the intermediate frequency signal to the next stage component and for receiving the standard signal from the next stage component, a first filter for separating the standard signal, and a third terminal for producing the standard signal to the mixing means.  The system has the advantage over prior down converters that only a single connection is required between the converter and the next stage component.
Patent CA-2055930-A1 (CA)
Title: Process and apparatus for generating elemental sulfur and reusable metal oxide from spent metal sulfide sorbents
Inventor: AYALA RAUL E
IPC: B01J15/00
Filed: 1991-11-21
Abstract: Dkt. No. 46-DV-2061 ABSTRACT OF THE DISCLOSURE       A process and apparatus for generating elemental sulfur and  re-usable metal oxide from spent metal-sulfur compound. Spent metal-sulfur compound is regenerated to re-usable metal oxide by moving a bed of spent metal-sulfur compound progressively through a single regeneration vessel having a first and second regeneration stage and a third cooling and purging stage.  The regeneration is carried out and elemental sulfur is generated in the first stage by introducing a first gas of sulfur dioxide which contains oxygen at a concentration less than the stoichiometric amount required for complete oxidation of the spent metal-sulfur compound.  A second gas containing sulfur dioxide and excess oxygen at a concentration sufficient for complete oxidation of the partially spent metal-sulfur compound, is introduced into the second regeneration stage.  Gaseous sulfur formed in the first regeneration stage is removed prior to introducing the second gas into the second regeneration stage.  An oxygen-containing gas is introduced into the third cooling and purging stage. Except for the gaseous sulfur removed from the first stage, the combined gases derived from the regeneration stages which are generally rich in sulfur dioxide and lean in oxygen, are removed from the regenerator as an off-gas and recycled as the first and second gas into the regenerator.  Oxygen concentration is controlled by adding air, oxygen-enriched air or pure oxygen to the recycled off-gas by suitable control means.
Patent CA-2057743-A1 (CA)
Title: Suspended vehicle with orientation adjustment
Inventor: RICHARDSON LYMAN
IPC: B61B13/04
Filed: 1991-12-16
Abstract: A vehicle includes a carriage suspended with wheels from an overhead track. A suspension mechanism supports a passenger or cargo car from the carriage. The suspension mechanism includes horizontal pivot joint that allows the car to swing about a horizontal axis when traversing bends. A sliding connection between the car and the pivot joint permits the car to displace horizontally relative to the pivot axis. A motor rotates a screw thread mechanism to produce such displacement. A sensor detects inclination of the car relative to vertical in response to uneven weight distribution or wind forces, but is not responsive; to centrifugal forces and normal swinging of the car at bends. The sensed inclination of the car may be displayed on a monitor, and controls permit the motor to be actuated to displace the car in a direction in which gravity applies a torque to the car that reduces undesired inclination.
Patent CA-2057750-A1 (CA)
Title: Process for producing a high strength artificial (cast) stone with high permeability and filter effect
Inventor: CSABAI TIBOR
IPC: C08J9/26
Filed: 1991-12-16
Abstract: A B S T R A C T     The invention relates to a process for producing a high-strength artificial stone with high permeability and filtering effect mainly for protecting deep-drilled wells yielding mineral oil, natural gas and water against getting choked by sand. A mixture comprising an artificial resin as a binding material containing a catalyzer for controlling duration of binding and pumpability and an assorted granular material of high-strength forming the skeleton and salt filling and increasing pore spaces is homogenized and pumped into the corresponding producing section of teh well into the area to be protected. After hardening of the mixture salt is dissolved from the obtained artificial stone and a filtering effect is achieved without binding the grains of the reservoir rock. Due to the mechanic characteristics and controlled porosity of the obtained artificial stone rock-parts, mainly sand delivered by the yielded fluidum into the well will be retained. An artificial stone with filtering effect can be prepared and hardened on the surface which can be inserted into the well and may be used as a sand-filter or with a desired shape and size it can be used for ecological purposes or in the industry to filter liquids or gaseous media, resp.
Patent CA-2058158-A1 (CA)
Title: Portable door lock
Inventor: MOUSSEAU GILLES A
IPC: E05C19/18
Filed: 1991-12-19
Abstract: Abstract In a portable door lock it is known to have a cursor that slides forward and backwards on a key-shaped piece of metal. This cursor is known to have a bumper of fast memory foam. The key-shaped piece has a bent tip that grabs into the strike-plate hole on the frame of the door. When the door is then shut, the cursor is pressed against the door until the foam bumper is compressed and then the cursor is dropped into one of the forward-angled teeth thus making it impossible for it to slide back. This invention is also known to hove o velcro strop with one end mode into a loop that slips around the lock in order to secure it to the door handle using only one hand. The strop is used to maintain the lock perpendicular to the door.
Patent CA-2058281-A1 (CA)
Title: Process and device for probing the sectoral proximity of a target, and ammunition using this device
Inventor: WISSHAUPT DANIEL
IPC: G01J1/04
Filed: 1991-12-20
Abstract: The device (8) uses an optical system with axial symmetry about the axis XX'. It is intended, in combination with suitably placed sensors, to detect the presence of a target in a given solid angle. In a diagram showing a longitudinal cross-section of the device in a plane P containing the axis XX', a window consisting of a front point A and a rear point B allows the passage of radiations coming along an axis  DELTA intersecting the axis XX' at a point O and making an angle  theta  less than 90 DEG  with it. The aperture angle 2 tau  of the window is represented by the angle between two straight lines O'A and O''B each making an angle  tau with the axis  DELTA . The device comprises two mirrors M1, M2 and a converging lens (12). The mirror M1 is represented in the plane P by a cross-section in the shape of an arc of a parabola PM1 with its focus at a point F situated in front of the point O and with an axis of symmetry  DELTA 1 parallel to  DELTA  and passing through F. The mirror M2 is represented in the plane P by a cross-section in the shape of an arc of a parabola PM2 having an axis of symmetry  delta  making a small angle  alpha with XX' and having a focus at the point F. The lens (12) has its optical centre on the axis XX' substantially at the point where the parabola PM1 intersects the axis XX'. 
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