baber/WOPTO huggingface dataset:
Patent CA-1050103-A (CA)
Title: Electrical control in a generator rectifier fed motor system
Inventor: TRUSSLER RONALD C
IPC: H02P7/343
Filed: 1975-12-31
Granted: 1979-03-06
Abstract: ABSTRACT OF THE DISCLOSURE      A control system for controlling a drive system which has an alternating current generator driven by a prime mover, a rectifier and a direct current motor powered by the rectified output of the generator, has a main control which provides a reference signal for the generator field and a reference signal for the motor field.  An energy absorbing device is arranged to be switched into and out of the motor armature circuit. The speed of the motor is sensed to determine deceleration and to determine maximum counter electromotive force (emf) based on speed and maximum motor field.  If the maximum counter emf will exceed a predetermined level, the energy absorbing device is the decelerating motor and to avoid excessive current caused by reversal of the motor field when the drive is being stopped or reversed.  The control system also includes circuitry which senses armature current, compares it with an armature current reference signal and provides a current control signal.  This current-control signal is normally directed to control armature current via the generator field winding.  This circuitry also senses a reversal of counter emf and the motor field less than maximum to switch the current control signal from the generator field and direct it to the motor field since during regeneration only the motor field can control the armature current by controll-ing the motor counter emf.  When maximum motor field current is achieved the current control signal is switched back to control current in the generator field winding because at this point the counter emf cannot develop full armature current even with maximum motor field.  Thus the control system provides for deceleration and permits a controlled maximum torque for reversal without excessive armature current.
Patent CA-1055619-A (CA)
Inventor: MURRMANN HELMUTH
IPC: H01L27/06
Filed: 1976-02-27
Granted: 1979-05-29
Abstract: ABSTRACT OF THE DISCLOSURE         In the so-called iso-planar technique for producing integrated circuits, the methods of doping conventionally employed for the substrate material, result in inversion layers being formed beneath the oxide of the isolating zones which render the isolation between the individual regions of the epitaxial layer incomplete due to channel formation.  Although this effect can be counteracted by increasing the doping of the substrate, this in turn increases the base capacitance of the regions.  The present invention avoids this disadvantage.  According to the invention, there is provided an integrated semiconductor circuit comprising a semiconductor substrate of one conductivity type and an epitaxial layer thereon of the other conductivity type.  Functional elements of the circuit are arranged in isolated regions of the epitaxial layer bounded by a p-n Junction between the epitaxial layer and the substrate and by oxide walls extending through the epitaxial layer from the surface thereof to the substrate   At least one of the oxide walls is bounded by a zone of the region of said one conductivity type.  Conveniently, the zones which surround the isolating oxide walls may serve as resistance elements in the integrated circuit.
Patent CA-1065646-A (CA)
Title: Processes and devices for determining properties of bodily mucus
Inventor: KOPITO LOUIS
IPC: G01N11/00
Filed: 1976-03-12
Granted: 1979-11-06
Abstract: PROCESSES AND DEVICES FOR DETERMINING     PROPERTIES OF VISCOUS FLUIDS                   Abstract of the Disclosure A device for determining the rheological properties of a fluid comprises a pair of cooperating members, the working face of each member defining parallel discrete ridges or flutes, the outermost portions of which define ridge lines, the ridges of one member being crossed with respect to the ridges of the other member.  A fluid sample is applied to the working face of one member and the working faces are pressed together so that the ridge lines of one member intersect the ridge lines of the other member at a matrix of points and so that volume increments of the fluid sample are defined.  The contact surface area of the fluid sample with the substrate is sub-stantially greater than the surface area of the general interface between the working faces.  The force required to separate the fluid at the general interface defines the rheological properties of the fluid with improved accuracy.
Patent CA-1067881-A (CA)
Inventor: TYERMAN WILLIAM J R
IPC: B01J23/42
Filed: 1976-05-21
Granted: 1979-12-11
Abstract: ABSTRACT OF THE DISCLOSURE       A method of preparing a supported catalyst which comprises:         1. sputtering a material which is catalytic, or which is a component of a catalytic system on to the surface of particles which are compatible with the material, and 2. consolidating the thus sputtered particles into aggregated form.       This method reduces or avoids certain disadvantages of conventionally prepared catalysts in which some of the metal can be trapped in deep pores in the conventional catalyst particle and thereby be unavail-able for catalysis or induce poor selectivity in the catalysed reaction.  The method is applicable to a wider range of substrates that is appropriate to conventional catalysts such as are loaded, for example by impregnation techniques.  The catalysts may be used in a wide range of applications.  Some examples of such applications are in various hydrocarbon conversion processes, for example naphtha reforming, isomerisation processes, hydrogenation processes, treatment of gaseous effluents and car exhaust treatment systems.
Patent CA-1041032-A (CA)
Inventor: MAIER JAKOB
IPC: A01J5/08
Filed: 1976-05-26
Granted: 1978-10-24
Abstract: MILKING CUP                 ABSTRACT OF THE DISCLOSURE    A milking cup having a sleeve-like cup and a rubber teat holder inserted therein.  The rubber teat holder has a suction sleeve portion which is connected at the lower end to a milk discharge pipe connected to a vacuum source.  An underpressure relief valve is provided on the milking cup.          A tube is connected to and extends between the underpres-sure relief valve and either the suction sleeve or a member which is connected to and is positioned between the lower end of the suction sleeve and the milk discharge pipe.  The end of the tube projects into a passageway defined by the suc-tion sleeve or the member and terminates approximately at the midpoint of the passageway.
Patent CA-1046269-A (CA)
Inventor: PETTIT CHARLES E
IPC: F41G1/24
Filed: 1976-06-02
Granted: 1979-01-16
Abstract: SHOTGUN WITH ADJUSTABLE                   VENTILATED SIGHT RIB     ABSTRACT OF THE DISCLOSURE      In combination with the barrel of a shotgun, a sighting rib extending along said barrel thereabove, and pivoted to said barrel at its rearward end on a horizontal transverse axis, and one or more short links extending angularly between the barrel and rib at their forward ends, the links being both pivoted and longitudinally slidable relative to the rib and barrel to permit changing or their angularity to adjust the angularity of the rib to the barrel, and mechanism for securing one end of each link against pivotal and sliding movement, whereby the angularity of the rib to the barrel may be fixed as desired, while leaving the opposite end of each link freely slidable to permit unequal longitudinal thermal expansion of the rib and barrel.
Patent CA-1053537-A (CA)
Inventor: DAVIS DONALD H
IPC: F01D21/16
Filed: 1976-06-16
Granted: 1979-05-01
Abstract: ABSTRACT OF THE DISCLOSURE                  A combined stop and intercept valve is provided for controlling steam flow from a high-pressure steam turbine to a low-pressure steam turbine and comprises a substantially cylindrical casing having two identical butterfly discs fixed to rotatable shafts and disposed within the casing one immediately downstream of the other.     Under normal operating conditions, both the stop (upstream) and intercept (downstream) valves are opened providing a relatively unrestricted passage for the flow of steam.      During a turbine overspeed condition when the turbine speed reaches 103% of rated speed, the intercept valve closes substantially all the way.  The stop valve backs up the intercept valve.  Should the turbine speed reach 108% of rated speed, the stop valve closes completely shutting off the flow of steam to the low-pressure turbine.  When opened, the discs partially overlie each other so that any wakes in the stream flow produced by the stop disc will not cause the intercept disc to flutter.  The interior of the casing is provided with annular grooves which receive valve seats with which the discs mate in a face sealing arrangement.  The positions of the seats in the grooves may be adjusted in an axial direction to maintain optimum sealing with the discs when the shafts flex under the pressure of the steam flow.
Patent CA-1073020-A (CA)
Inventor: YAJIMA KENJI
IPC: G04C3/00
Filed: 1976-07-23
Granted: 1980-03-04
Abstract: ABSTRACT   The invention provides a switch mechanism for an electronic timepiece having an open portion formed in the dielectric base plate, an electrode portion mounted on the inner side of the open portion, a contact portion of a switch lever mounted in the open portion without connection to the electrode portion, whereby when the switch lever is swung the contact portion contacts the electrode portion.
Patent CA-1051689-A (CA)
Inventor: GOLOFF ALEXANDER
IPC: F16F15/12
Filed: 1976-08-13
Granted: 1979-04-03
Abstract: RUBBER TORSIONAL VIBRATION DAMPER WITH COOLING MEANS     A B S T R A C T           A vibration damper for rotating members consists of a hub member joined to an inertia member by a plurality of elastic elements.  Cooling fins on the inertia member and between the elastic element provide for dissipation of heat from the inertia member and the elastic elements.  The cooling fins are parallel to the side surfaces of the inertia member.  In an alternate embodiment, the cooling fins are angled to the side surfaces of the inertia member to augment the cooling effect of integral fins therein.  In further alternate embodiments the hub member is bifurcated and the cooling fins and elastic member are oriented at angles to the axis of rotation of the hub.
Patent CA-1071836-A (CA)
Inventor: IRANI MAZIN R
IPC: C01B25/26
Filed: 1976-08-13
Granted: 1980-02-19
Abstract: FOOD GRADE-PHOSPHORIC ACID FROM WET PROCESS ACID             ABSTRACT OF THE DISCLOSURE     A process for purifying wet process phosphoric acid to a food grade phosphoric acid by a sequence of steps including extraction, partial neutralization, dilution with water, con-tact    with activated carbon, neutralization to a pH of from about 5 to about 9, contact with activated carbon, contact with an insoluble alkaline earth metal phosphate salt, re-conversion to a purified food grade phosphoric acid, and re-covery of the product acid.
Patent CA-1054770-A (CA)
Inventor: COTTER DONALD
IPC: E04D3/366
Filed: 1976-08-16
Granted: 1979-05-22
Abstract: METAL ROOFING/SIDING SYSTEM                  ABSTRACT OF THE DISCLOSURE            A roofing and siding system is disclosed.  The system includes a plurality of elongate, generally planar sheets each having upwardly projecting flanges disposed along the lateral edges of the sheet.  The flanges each have an outwardly directed C-shaped cross section.  The sheets are placed side-by-side so that the lateral edges thereof are juxtaposed to corresponding lateral edges of adjacent sheets to provide a surface comprising the exposed surface of a building.  Clips are provided for attaching the planar sheets to the building.  A plurality of elongate battens are provided which are constructed of resilient material.  Each batten has a generally rectangular cross section including two longer, substantially parallel sides and two relatively shorter sides.  One of the shorter sides of each batten is slit so that the batten can be snapped over adjacent flanges on juxtaposed lateral edges of two of the planar sheets to provide weatherproofing at the edges.
Patent CA-1081768-A (CA)
Inventor: KLEIN KEITH W
IPC: H01H83/04
Filed: 1976-10-20
Granted: 1980-07-15
Abstract: ABSTRACT     An electrical receptacle assembly affording ground fault protection includes a housing containing fixed contacts supported by socket connector sub-assemblies.  A support plate mounts an electronics/ magnetics module and operating mechanism sub-assembly including a pivotal, movable contact carrying arm, a latch, a reset button and a trip solenoid.  The reset button positions the latch to detain the arm with the contacts in circuit completing relation.          On a ground fault, the module effectuates energization of the solenoid to unlatch the arm which moves to separate the contacts.
Patent CA-1059336-A (CA)
Inventor: NICKERSON DAVID L
IPC: E04B2/08
Filed: 1977-03-03
Granted: 1979-07-31
Abstract: ABSTRACT         A preformed masonry building block having a U-shaped preformed insulating insert of molded expandible polystyrene disposed in each cavity thereof.  Each web of the building block is provided with a vertical insulating slot which is at least three fourths (3/4) of an inch wide and which has a volume equal to at least one half (1/2) a volume found by multiplying slot width by web height and thickness.  Each end web has a slot ad-jacent the end of each leg of the adjacent insert and the legs project into and fill the slots.  The intermediate web has a slot on each side thereof adjacent the body portions of the in-serts and a projection on the body portion of each insert enters and fills its adjacent slot.
Patent CA-1087433-A (CA)
Title: Camera fixed time delay quench strobe
Inventor: JOHNSON BRUCE K
IPC: G03B7/16
Filed: 1977-04-05
Granted: 1980-10-14
Abstract: Abstract of the Disclosure A photographic camera apparatus of the type having an automatic exposer control system for controlling a pair of scanning shutter blade elements, having respective primary aperatures therethrough for collectively defining a gradually  varying effective aperture size as a function of the position of the blade elements  together with corresponding photocell sweep secondary apertures therethrough for movement in corresponding with the primary apertures to define a small secondary effective aperture for admitting the passage of scene light to a photocell, is adapted for use with either an ordinary flashlamp or a quench strobe.  The interchangeability between flash-lamp and quench strobe is made possible by utilizing the command signal to close the shutter blade elements from the camera exposure control system and thereafter providing a signal to the quench strobe to terminate the firing of its flash tube subsequent to the expiration of a time delay after the shutter blade closing command signal.  The length of the time delay depends upon whether the camera is operating in an ordinary flash mode or in a "fill-in" flash mode in which there is a high intensity of ambient light.  Correct exposure in both modes is easily obtained using the invention.
Patent CA-1096585-A (CA)
Inventor: KOEHLER KLAUS
IPC: C01G49/08
Filed: 1977-04-20
Granted: 1981-03-03
Abstract: Bayer 2998-LH/jc OXIDATION OF METALLIC IRON TO BLACK           OXIDE PIGMENTS     Abstract of the Disclosure A metallic iron-containing starting material such as iron filings, iron powder or a reduced ore such as ilmenite is oxidized with air in the presence of 5 to 40% of iron oxide and/or iron oxide hydroxide nuclei and about 2.5 to 200% of an electrolyte, percentages being based on metallic iron by weight.  The oxidation is effected in aqueous suspension at 75 to 100°C and a pH of 4 to 6.5.  If the nuclei are magnetite-free, at least the first quarter of the oxidation should be at pH 5 to 6.5.  Preferred electrolytes are transition metal salts.  The pigments are more, intense in color  and have a more pronounced blue tinge.     Le A 17 128
Patent CA-1063561-A (CA)
Inventor: LUTZ DAVID E
IPC: B60P1/36
Filed: 1977-04-22
Granted: 1979-10-02
Abstract: Abstract of the Disclosure This invention relates to a loading and unloading apparatus for a load-carrying vehicle.  The arrangement includes a plurality of cables which are laid on the floor of the vehicle and which support loads placed thereon. The cables can be moved in either longitudinal direction on the vehicle floor whereby loads supported on the cables are moved along the vehicle floor to facilitate loading and unloading of the vehicle.  The cables are for all practical purposes endless and have a load supporting run and a return run. The return run is so arranged as to not interfere with the understructure of the vehicle and the fifth wheel connection, in the case of a trailer of a tractor-trailer rig.  The cables are driven by means of a driven bulkhead which is connected to the cables and which is, in turn, driven by a chain drive mechanism.
Patent CA-1081542-A (CA)
Inventor: HESCH HAROLD E
IPC: E05D15/10
Filed: 1977-04-25
Granted: 1980-07-15
Abstract: ABSTRACT OF THE DISCLOSURE Disclosed is a railway car having a side wall which includes horizontally spaced vertical door posts providing a door opening and a door assembly adapted to be moved outwardly and laterally with respect to the opening.  The door assembly includes first and second horizontally spaced vertical edge beams, each beam including an inner wall, an outer wall and vertical side walls connecting the inner wall and outer wall which provides a tubular beam configuration.  Each beam outer wall includes an outer planar wall portion and an inwardly sloping wall portion, the inwardly sloping wall portion sloping inwardly to join the adjacent side wall.  Each beam has an inner flange means extending inwardly of the opening from the beam adjacent the junction of the sloping wall portion and the respective adjacent side wall.  A door panel is connected to the inwardly directed flange means, and each beam has outer resilient flange means extending laterally from the respective beam.  One of the laterally extending flange means includes a resilient flange member substantially planar with the planar outer wall of the associated beam which flange member has a portion extending over an outer wall of the associated door post when the door assembly is in closed position.  The resilient flange member further includes a portion projecting inwardly of and in transverse relation to another wall of the associated door post.  The other outer flange means includes an angle shaped vertical sealing member in sealing relationship with the outer wall of the other door post when the door assembly is in a closed position.
Patent CA-1076326-A (CA)
Inventor: MEYER ENGELBERT A
IPC: B60J1/02
Filed: 1977-05-02
Granted: 1980-04-29
Abstract: Abstract of the Disclosure A resilient fastener or adapter and method is provided for attaching a flanged molding member, or the like, to a panel to substantially cover a gap between the panel and a spaced structural member. The fastener or adapter is flexurally insertable in the space between the panel surface and the structured member and is retained therebetween in the flexed state. A resilient tab extends adjacent a surface of the panel to receive a flange of the molding in intereference engagement therewith and retain the molding in place. The fastener or adapter is advantageously employed in the manufacture of an automobile to retain a decorative molding in the space formed between a windshield or backlight and the body panel to which the windshield or backlight is assembled.
Patent CA-1049885-A (CA)
Inventor: HIERONYMUS GERALD W
IPC: F16K11/14
Filed: 1977-05-10
Granted: 1979-03-06
Abstract: FAST ACTING TWO-WAY VALVE          ABSTRACT:   A valve assembly having a small volume cavity formed therein which communicates with  two valves, one of which is closed com-pletely before the other one is opened and vice versa.  An actuating mechanism holds a valving member in one of the valves in an opened condition to thereby maintain a fluidic path through the one valve and the cavity.  The other valving member at this time lies in a closed position preventing communication between this valve and the cavity.  The actuating mechanism when actuated moves away from the valving member in the open valve allowing the open valve to close completely.  The fluidic path through the one valve is thereby broken.  A second fluidic path is made when the actuating mechanism moves the other valving member to an opened position.
Patent CA-1099492-A (CA)
Title: Tubular reactor for the high pressure polymerization of alpha-olefines
Inventor: DAL BIANCO ALBERTO
IPC: C08F2/00
Filed: 1977-07-08
Granted: 1981-04-21
Abstract: ABSTRACT OF THE DISCLOSURE:           Tubular high thermal exchange reactor for the catalytic production of alpha-olefine polymers and copolymers from process fluid alpha-olefines under high pressures.  The tubular reactor consists of three coaxially arranged tubes, distanced from each other in such a way as to create between the outer tube and the intermediate an annular interspace suited for the circulation of a refrigerating fluid and between the intermediate tube, sized for very high pressures, and the innermost tube an interspace that will form an exothermic reaction zone proper.  The innermost tube is of the low-pressure type and forms the preheating zone of the process fluid, fed in under pressure from the outside by the action of the reaction heat that develops inside the intermediate tube.  The preheating zone extends up to over half the length of the reactor and, at the end of it, defining the reaction starting zone that is, the feeding zone of the catalyst or the like.  Means are provided for the control of the temperature in the reaction starting zone through the immission of fresh process fluid into the reaction starting zone itself.  The process fluid having been drawn from the inlet of the reactor or, by the recycling, into the inlet of the reactor, of process fluid drawn from the end of the preheating zone and refrigerated, as well as means for balancing the pressures between the reaction zone and said preheating zone.
Patent CA-1095229-A (CA)
Inventor: HANOLD REINHARD C F III
IPC: H01B3/12
Filed: 1977-07-13
Granted: 1981-02-10
Abstract: Abstract of the Disclosure A ceramic dielectric material of high dielectric constant is provided by firing barium titanate particles sized 1000 A and finer.   1.
Patent CA-1091358-A (CA)
Inventor: SARGENT DESMOND J
IPC: G06F3/02
Filed: 1977-07-19
Granted: 1980-12-09
Abstract: ABSTRACT Information for display at a terminal apparatus of a computer is stored in blocks the first part of which contains the information which is actually displayed at the terminal and the second part of which contains information relating to the display and which may be used to influence the display at the time or in response to a keyboard entry signal.  For example, the second part of the block could include information for providing the complete address of an another block which would be selected by the operation of a selected key of the keyboard.  The second part of the block could alternatively influence the format and/or colour of the display at the ter-minal.  When a block is read from the store of the computer the second part is retained in another store which may be located in the terminal or in the computer itself or perhaps both.  The invention is particularly useful in reducing the  complexity of the operating protocol of the computer.