CA1046796A - Flow meter - Google Patents
Flow meterInfo
- Publication number
- CA1046796A CA1046796A CA255,722A CA255722A CA1046796A CA 1046796 A CA1046796 A CA 1046796A CA 255722 A CA255722 A CA 255722A CA 1046796 A CA1046796 A CA 1046796A
- Authority
- CA
- Canada
- Prior art keywords
- flow
- main body
- flow meter
- rotor
- end caps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A turbine-type flow meter is described as a construc-tion enabling easy access to all parts for cleaning, servicing and replacement. Specifically, a three piece construction is presented including end caps housing vanes and a central main body for housing a metering rotor. The end cap construction provides the bearings for the rotor and the necessity for flow straighteners is eliminated by pre-selecting a sufficient dis-tance between the rotor and vanes. Flow is measured by electri-cally counting the rotations of the rotor and means are provided both for sensing gaseous substances and to enable bi-directional flow.
A turbine-type flow meter is described as a construc-tion enabling easy access to all parts for cleaning, servicing and replacement. Specifically, a three piece construction is presented including end caps housing vanes and a central main body for housing a metering rotor. The end cap construction provides the bearings for the rotor and the necessity for flow straighteners is eliminated by pre-selecting a sufficient dis-tance between the rotor and vanes. Flow is measured by electri-cally counting the rotations of the rotor and means are provided both for sensing gaseous substances and to enable bi-directional flow.
Description
This invention relates primarily to measuring devices and more particularly to flow measuring device of the turbine-type, particularly useful in applications requiring sanitary and accessible construction.
Presently used flow measuring devices are basically of a one-piece construction whereby a set of vanes straddle a mea-suring rotor and are clipped into place such as by internal snap rings held in position within the unitary body of the meter. The snap rings engage recesses machined into the body, A separate flow straightener is coup~ed with the main body of the meter so that the liquid being measured enters the main body in a predic-table flow pattern, For sanitary applications, the presently used one-piece construction with coupled flow straightener is unsatisfactory be-cause of the tendency of contamination to occur where the flow straightener is coupled to the main body and where the internal snap rings holding the vanes engage recesses machined in the main body, Furthermore, the one-piece construction provides a problem of accessibility to the bearings, vanes and rotor for the purposes of cleaning and replacement, Also, such presently used one-piece constructions with attached flow straightener enable uni-directional use only, Accordingly, it is an object o~ the present invention to provide a construction for a flow meter of the turbine-type which enables easy access to parts for cleaning, servicing and replacement, A further and more specific object of the present inven-tion is to provide a multi-piece device to enable easy access to all parts thereof, A still further object is to eliminate the need for a flow straightener in a flow metering device and to mount the vanes for the meter in such a way as to enable cleaning and servicing in sanitary applications, ~k Another object of the present invention is to provide a bi-directional flow capability for a flow meter, These and other objects of the present invention are provided in a flow meter construction of the turbine-type which includes three general parts for enabling easy access for clean-ing, servicing and replacement. By way of background, a flow meter of the turbine-type operates with a rotor of magnetic mate-rial spinming in response to the flow therethrough of a liquid, A
magnetic field is created in the area of the rotor so that as the 1~ rotor spins it passes through the field and thereby generates a pulse which can be counted and which relates to the flow of li-quid passing the rotor, The flow meter of the present invention includes identical end caps straddling a main body, with the rotor being supported by the end caps for rotation within the main body.
Vanes are welded in the end caps at a sufficient distance from the rotor so that flow straightening is accomplished prior to the liquid reaching the rotor, External clamps couple the end caps to the main body and bearing support assemblies are located central-ly of the vanes for providing thrust and carrier bearings for the rotor turbine shafts extending axially of the rotor, The main body defines an outer cylindrical surface cen-trally through which extends a magnetic impulse counter probe for sensing the rotations of the rotor as the fluid passes therethrough, Also extending through the main body, either forward or backward of the rotor in terms of flow, is an ai~r probe, which senses the conductivity of the fluid passing through the device in crder to enable or impede the magnetic impulse counter probe circuit, so that fluid is distinguishible from gas in thel~lmeasuring process, A trim vane is inserted through the main body outer surface to create directiQnal turbulence onto the rotor and thereby enable bi-directional calibration of the device.
The above brief description, as well as further objects, 104~796 features and advantages of the present invention, will be more ~ully appreciated by reference to the following detailed descrip-tion of a presently preferred, but no~ heless illustratlve embo-diment in accordance with the invention, when taken in conJunction with the accompanying drawings, wherein:
Fig. 1 is an isometric, disassembled view of a flow meter according to the present invention, showing particularly the arrangement of parts thereof and a construction enabling easy access to parts for cleaning, repair and/or replacement thereof and further illustrating the bi-directional flow capability of the device;
Fig. 2 is a side assembly view, shown partly in section and showing particularly the magnetic impulse counter probe;
Fig, 3 is a back, partly sectional view of the device of Fig. 2 taken along the line 3-3 thereof and showing particularly the air probe and the external clamp holding the ~nd cap to the main body;
Fig, 4 is a back, partly sectional view taken along the line 4-4 of Fig, 2 and showing particularly the trim vane of the 2G device; and Fig. 5 is a side sectional view taken along the line 5-5 of Fig. 4 and showing particularly the trim vane blade shape and construction.
Refe~ring to the drawings, and in particular Fig, 1, a flow meter construction is shown in disassembled view as including end caps 10 of generally cylindrical shape and supporting axially thereof bearing support assemblies 12, Bearing support assemblies 12 are mounted by means of vanes 14 projecting therefrom and welded on the internal surface 16 defined by the end caps. The internally projecting ends of bearing support assemblies 12 mount thrust bearings 18 (Fig, 2) and carrier bearings 20 for supporting rotor 22 as will hereinafter be described.
~()4679~
Main body 24 of the flow meter is also generally of a cylindrical shape and defines therewithin a precisely cylindrical surface 26, Rotor 22 is positioned cent~ally and axially of main body 24 with turbine shafts 28 projecting outwardly and axially thereof for mounting within the bearing supports 18, 20 previously described. Sanitary seals 30 effectively seal the mating of main body 24 to en~ caps lO so that a continuous, internal cylindrical surface is presented to the material flowing through the device.
Vanes 14 are positioned with respect to the leading ed-1~ ges of the rotor 22 so that there is a distance therebetween ofat least one-quarter the internal diameter of the device in order to eliminate the need for flow straighteners, whose function is instead performed by four or more vanes 14.
~ ain body 24 defines openings 32, 34, 36 (Fig. 4) therethrough to enable mounting, respectively of magnetic impulse counter probe 38, air probe 40 and trim vane 42, Specifically, magnetic impu~se counter probe, generally designated 38 mounts a magnetic probe 39 and circuit 41 (Fig. 2) whose function it is to magnetically sense the rotations of rotor 22 and to cause an elec-trical output proportional to such rotations at connectors ~3.
The air probe, generally designated 40, includes pro-jecting probe device 44 which actually inserts through the side wall of main body 24 and into the flow path of the f~uid being measured, Since it is well known that liquids always include salts making conductivity higher, if it is desired to measure liquids only, air probe 40 senses conductivity and by electrical coupling to magnetic impulse counter probe 38, controls whether or not a measurement is made, For instance, if air only is flowing through the device, air probe 40 will sense the lower conductivity and electrically prevent a measurement by means of an output from ma-gnetic impulse~counter probe 38. As a further example, if the device of the present invention were used to measure the amount of ~046~796 tomato juice being processed, air probe 40 would prevent the conti-nuation of counting by magnetic impulse counter probe 3B after the completion of flow by the processed tomato juice when only air would be going through the device, The trim vane, generally designated 42, is positioned on the opposite side of the rotor to the air probe 40 if fitted. The trim vane is ad~ustable to create directional turbulence to in-crease or decrease the rotor speed and to give identical rate of . rotation per unit volume flow, as with the trim vane on the down-stream side. Trim vane blade 46 of trim vane 42 actually insertsto the path of flow within main body 24 and is adjustable by trial and error to match the turbulence caused by air pDobe 40 so that the device may be used bi-directionally with either end cap as the input structure for the liquid being measured, For instance, lf air probe 40 is positioned after rotor 22 when liquid is flowing in direction 48, there will be no turbulence imparted to the liquid.
However, if direction 48 is reversed for the flow, there will be such a turbulence. In order to use the device bi-directionally, if the direction of flow is opposite to direction 48 when magnetic impulse counter probe 38 is calibrated, bi-directional flow will only be enabled if an equal and opposite turbulence is caused when the liquid flows in direction 48, Accordingly, trim vane 42 with trim vane blade 46 projecting into the path of flow is used to create the same turbulence when flow is in direction 48 as ~as present when calibration took place with flow in a direction op-posite to direction 48 as caused by projecting probe device 44.
In other words, assume a flow direction opposite to that~designated by arrow 48, With air probe 40 in position, thirty thousand pulses i is the output from magnetic impulse counter probe 38 for one hun-dred gallons of liquid during the calibration procedure, Flowis then reversed to direction 48 and the angle of trim vane blade 46 is adjusted until magnetic impulse counter probe 38 puts out thirty thousand pulses for one hundred gallons (three hundred pul-ses per gallon), After such a calibration procedure, flow is ena-bled in either direction with the same turbulence effect and attendant accurate measurement in either case.
Referring to the other drawings, the present invention construction is shown assembled with sanitary seals 30 in place.
It should be particularly noted that the internal flow path is defined by a continuous cylindrical surface 16, 26, The main body 24 and end caps 10 are formed of non-magnetic stainless steel so 10 as not to interfere with the function of magnetic impulse counter probe 38. The coupling of main body 24 to end caps 10 produces prs~trusions 50 on the outside surface of the device, over which clamping assemblies 52 conform in s~rder to s~al the mating of main body 24 to end caps 10, as is shown particularly in Figs. 2 and 3, Clamping assemblies 52 include clamp handle 54, clamp bands 56, hinge 58 and link 60, all operable by means well known, Figs, 4 and 5 particularly show the calibration adjust-ment feature of trim vane 42 whereby trim vane blade 46 is angu-larly adjusted simply by inserting a screw driver or the like to ~0 slot 62 defined by trim vane 42.
In order to more clearly describe apparatus according to the present invention, and the features thereof, a sequence of the operations of the device will now be set forth, Firstly, as-sembly of the device takes place by removably mounting rotor 22 to bearing support assembly 12 on one of the ~nd caps 10. This is accomplished by merely inserting sanitary seal 30 within end cap 10 and turbine shaft 28 into carrier bearing 20, End cap 10, with rotor 22 thus mounted, is inserted to main body 24, The other end cap is then likewise mated when main body 24 and clamps 30 52 operated to fix the three-piece construction, ~agnetic impulse counter probe 38 is threadably inserted to a position within the wall of main body 24 so that it is centrally positioned between ~04~7~6 the ends of main body 24 adjacent the rotor position. Air probe 40 is threadably inserted so that pr~ecting probe device 44 extends to the flow path within the inner wall 26 of main body 24.
Trim vane 42 is likewise threadably inserted so that trim vane blade 46 extends to within the inner wall 26 of main body 24. The devi~ce is then coupled to a pipeline or the like through which liquid is caused to flow in a direction opposite to that designated by arrow 48.
Calibration is performed by causing a known quantity of liquid to flow through the device and counting the pulse output of magnetic impulse counter probe 38. The same quantity of liquid is then caused to flow in direction 48 and the angle of trim vane blade 46 is adjusted so that an equal number of pulses per gallon of liquid is counted by means of magnetic impulse counter probe 38, The device is now ready for flow in either direction.~/with air probe 40 terminating the output of magnetic impulse counter probe 38 whenever air or another gas is sensed.
Cleaning, repair or parts replacement is conveniently enabled by reversing the assembly process and the smooth, continuous internal flow path prevents contamination from building up within the device, for instance, in a liquid food processing use for the deYice .
Furthermore, the construction presented by this inven-tion eliminates the need for a separate flow straightener and generally contributes to an efficient, maintainable and yet simple device with flexible convenient usage capability,
Presently used flow measuring devices are basically of a one-piece construction whereby a set of vanes straddle a mea-suring rotor and are clipped into place such as by internal snap rings held in position within the unitary body of the meter. The snap rings engage recesses machined into the body, A separate flow straightener is coup~ed with the main body of the meter so that the liquid being measured enters the main body in a predic-table flow pattern, For sanitary applications, the presently used one-piece construction with coupled flow straightener is unsatisfactory be-cause of the tendency of contamination to occur where the flow straightener is coupled to the main body and where the internal snap rings holding the vanes engage recesses machined in the main body, Furthermore, the one-piece construction provides a problem of accessibility to the bearings, vanes and rotor for the purposes of cleaning and replacement, Also, such presently used one-piece constructions with attached flow straightener enable uni-directional use only, Accordingly, it is an object o~ the present invention to provide a construction for a flow meter of the turbine-type which enables easy access to parts for cleaning, servicing and replacement, A further and more specific object of the present inven-tion is to provide a multi-piece device to enable easy access to all parts thereof, A still further object is to eliminate the need for a flow straightener in a flow metering device and to mount the vanes for the meter in such a way as to enable cleaning and servicing in sanitary applications, ~k Another object of the present invention is to provide a bi-directional flow capability for a flow meter, These and other objects of the present invention are provided in a flow meter construction of the turbine-type which includes three general parts for enabling easy access for clean-ing, servicing and replacement. By way of background, a flow meter of the turbine-type operates with a rotor of magnetic mate-rial spinming in response to the flow therethrough of a liquid, A
magnetic field is created in the area of the rotor so that as the 1~ rotor spins it passes through the field and thereby generates a pulse which can be counted and which relates to the flow of li-quid passing the rotor, The flow meter of the present invention includes identical end caps straddling a main body, with the rotor being supported by the end caps for rotation within the main body.
Vanes are welded in the end caps at a sufficient distance from the rotor so that flow straightening is accomplished prior to the liquid reaching the rotor, External clamps couple the end caps to the main body and bearing support assemblies are located central-ly of the vanes for providing thrust and carrier bearings for the rotor turbine shafts extending axially of the rotor, The main body defines an outer cylindrical surface cen-trally through which extends a magnetic impulse counter probe for sensing the rotations of the rotor as the fluid passes therethrough, Also extending through the main body, either forward or backward of the rotor in terms of flow, is an ai~r probe, which senses the conductivity of the fluid passing through the device in crder to enable or impede the magnetic impulse counter probe circuit, so that fluid is distinguishible from gas in thel~lmeasuring process, A trim vane is inserted through the main body outer surface to create directiQnal turbulence onto the rotor and thereby enable bi-directional calibration of the device.
The above brief description, as well as further objects, 104~796 features and advantages of the present invention, will be more ~ully appreciated by reference to the following detailed descrip-tion of a presently preferred, but no~ heless illustratlve embo-diment in accordance with the invention, when taken in conJunction with the accompanying drawings, wherein:
Fig. 1 is an isometric, disassembled view of a flow meter according to the present invention, showing particularly the arrangement of parts thereof and a construction enabling easy access to parts for cleaning, repair and/or replacement thereof and further illustrating the bi-directional flow capability of the device;
Fig. 2 is a side assembly view, shown partly in section and showing particularly the magnetic impulse counter probe;
Fig, 3 is a back, partly sectional view of the device of Fig. 2 taken along the line 3-3 thereof and showing particularly the air probe and the external clamp holding the ~nd cap to the main body;
Fig, 4 is a back, partly sectional view taken along the line 4-4 of Fig, 2 and showing particularly the trim vane of the 2G device; and Fig. 5 is a side sectional view taken along the line 5-5 of Fig. 4 and showing particularly the trim vane blade shape and construction.
Refe~ring to the drawings, and in particular Fig, 1, a flow meter construction is shown in disassembled view as including end caps 10 of generally cylindrical shape and supporting axially thereof bearing support assemblies 12, Bearing support assemblies 12 are mounted by means of vanes 14 projecting therefrom and welded on the internal surface 16 defined by the end caps. The internally projecting ends of bearing support assemblies 12 mount thrust bearings 18 (Fig, 2) and carrier bearings 20 for supporting rotor 22 as will hereinafter be described.
~()4679~
Main body 24 of the flow meter is also generally of a cylindrical shape and defines therewithin a precisely cylindrical surface 26, Rotor 22 is positioned cent~ally and axially of main body 24 with turbine shafts 28 projecting outwardly and axially thereof for mounting within the bearing supports 18, 20 previously described. Sanitary seals 30 effectively seal the mating of main body 24 to en~ caps lO so that a continuous, internal cylindrical surface is presented to the material flowing through the device.
Vanes 14 are positioned with respect to the leading ed-1~ ges of the rotor 22 so that there is a distance therebetween ofat least one-quarter the internal diameter of the device in order to eliminate the need for flow straighteners, whose function is instead performed by four or more vanes 14.
~ ain body 24 defines openings 32, 34, 36 (Fig. 4) therethrough to enable mounting, respectively of magnetic impulse counter probe 38, air probe 40 and trim vane 42, Specifically, magnetic impu~se counter probe, generally designated 38 mounts a magnetic probe 39 and circuit 41 (Fig. 2) whose function it is to magnetically sense the rotations of rotor 22 and to cause an elec-trical output proportional to such rotations at connectors ~3.
The air probe, generally designated 40, includes pro-jecting probe device 44 which actually inserts through the side wall of main body 24 and into the flow path of the f~uid being measured, Since it is well known that liquids always include salts making conductivity higher, if it is desired to measure liquids only, air probe 40 senses conductivity and by electrical coupling to magnetic impulse counter probe 38, controls whether or not a measurement is made, For instance, if air only is flowing through the device, air probe 40 will sense the lower conductivity and electrically prevent a measurement by means of an output from ma-gnetic impulse~counter probe 38. As a further example, if the device of the present invention were used to measure the amount of ~046~796 tomato juice being processed, air probe 40 would prevent the conti-nuation of counting by magnetic impulse counter probe 3B after the completion of flow by the processed tomato juice when only air would be going through the device, The trim vane, generally designated 42, is positioned on the opposite side of the rotor to the air probe 40 if fitted. The trim vane is ad~ustable to create directional turbulence to in-crease or decrease the rotor speed and to give identical rate of . rotation per unit volume flow, as with the trim vane on the down-stream side. Trim vane blade 46 of trim vane 42 actually insertsto the path of flow within main body 24 and is adjustable by trial and error to match the turbulence caused by air pDobe 40 so that the device may be used bi-directionally with either end cap as the input structure for the liquid being measured, For instance, lf air probe 40 is positioned after rotor 22 when liquid is flowing in direction 48, there will be no turbulence imparted to the liquid.
However, if direction 48 is reversed for the flow, there will be such a turbulence. In order to use the device bi-directionally, if the direction of flow is opposite to direction 48 when magnetic impulse counter probe 38 is calibrated, bi-directional flow will only be enabled if an equal and opposite turbulence is caused when the liquid flows in direction 48, Accordingly, trim vane 42 with trim vane blade 46 projecting into the path of flow is used to create the same turbulence when flow is in direction 48 as ~as present when calibration took place with flow in a direction op-posite to direction 48 as caused by projecting probe device 44.
In other words, assume a flow direction opposite to that~designated by arrow 48, With air probe 40 in position, thirty thousand pulses i is the output from magnetic impulse counter probe 38 for one hun-dred gallons of liquid during the calibration procedure, Flowis then reversed to direction 48 and the angle of trim vane blade 46 is adjusted until magnetic impulse counter probe 38 puts out thirty thousand pulses for one hundred gallons (three hundred pul-ses per gallon), After such a calibration procedure, flow is ena-bled in either direction with the same turbulence effect and attendant accurate measurement in either case.
Referring to the other drawings, the present invention construction is shown assembled with sanitary seals 30 in place.
It should be particularly noted that the internal flow path is defined by a continuous cylindrical surface 16, 26, The main body 24 and end caps 10 are formed of non-magnetic stainless steel so 10 as not to interfere with the function of magnetic impulse counter probe 38. The coupling of main body 24 to end caps 10 produces prs~trusions 50 on the outside surface of the device, over which clamping assemblies 52 conform in s~rder to s~al the mating of main body 24 to end caps 10, as is shown particularly in Figs. 2 and 3, Clamping assemblies 52 include clamp handle 54, clamp bands 56, hinge 58 and link 60, all operable by means well known, Figs, 4 and 5 particularly show the calibration adjust-ment feature of trim vane 42 whereby trim vane blade 46 is angu-larly adjusted simply by inserting a screw driver or the like to ~0 slot 62 defined by trim vane 42.
In order to more clearly describe apparatus according to the present invention, and the features thereof, a sequence of the operations of the device will now be set forth, Firstly, as-sembly of the device takes place by removably mounting rotor 22 to bearing support assembly 12 on one of the ~nd caps 10. This is accomplished by merely inserting sanitary seal 30 within end cap 10 and turbine shaft 28 into carrier bearing 20, End cap 10, with rotor 22 thus mounted, is inserted to main body 24, The other end cap is then likewise mated when main body 24 and clamps 30 52 operated to fix the three-piece construction, ~agnetic impulse counter probe 38 is threadably inserted to a position within the wall of main body 24 so that it is centrally positioned between ~04~7~6 the ends of main body 24 adjacent the rotor position. Air probe 40 is threadably inserted so that pr~ecting probe device 44 extends to the flow path within the inner wall 26 of main body 24.
Trim vane 42 is likewise threadably inserted so that trim vane blade 46 extends to within the inner wall 26 of main body 24. The devi~ce is then coupled to a pipeline or the like through which liquid is caused to flow in a direction opposite to that designated by arrow 48.
Calibration is performed by causing a known quantity of liquid to flow through the device and counting the pulse output of magnetic impulse counter probe 38. The same quantity of liquid is then caused to flow in direction 48 and the angle of trim vane blade 46 is adjusted so that an equal number of pulses per gallon of liquid is counted by means of magnetic impulse counter probe 38, The device is now ready for flow in either direction.~/with air probe 40 terminating the output of magnetic impulse counter probe 38 whenever air or another gas is sensed.
Cleaning, repair or parts replacement is conveniently enabled by reversing the assembly process and the smooth, continuous internal flow path prevents contamination from building up within the device, for instance, in a liquid food processing use for the deYice .
Furthermore, the construction presented by this inven-tion eliminates the need for a separate flow straightener and generally contributes to an efficient, maintainable and yet simple device with flexible convenient usage capability,
Claims (11)
1. A flow meter for use in producing an electrical output indicating the amount of flow therein comprising a pair of symmetrically and coaxially arranged end caps, each end cap supporting an axially aligned bearing support assembly by means of vanes extending from the assembly to the end cap, a main body of substantially constant internal diameter throughout its length and disposed between the end caps defining within the main body an inner main body surface, the main body being coaxially aligned with the end caps and the main body surface defining with the end caps a cylindrical flow meter conduit, a magnetic rotor, supported by the assemblies and within the main body, whose rotation is responsive to flow through the flow meter conduit, a magnetic impulse counter probe for creating a magne-tic field in the area of the rotor for generating pulses pro-portional to flow rate through the flow meter conduit, external clamping means for holding the end caps to the main body, and means for acting on the flow within the conduit to adjust the meter so that the rate of rotation of the rotor per unit volume of flow is identical in either axial direction of flow so as to enable metering of flow in either axial direction.
2. A flow meter as claimed in Claim 1 in which the means acting on the flow include a trim vane extending into the flow meter conduit.
3. A flow meter as claimed in Claim 1 in which an air probe for controlling the production of the electrical output extends through the main body into the conduit.
4. A flow meter as claimed in Claim 2 in which an air probe for controlling the production of the electrical output extends through the main body into the conduit on the opposite axial side of the magnetic rotor from the trim vane.
.epsilon.
.epsilon.
5. A flow meter as claimed in claims 1, 2 or 3 in which the vanes are fixedly attached to the end cap.
6. A flow meter as claimed in claims 1, 2, or 3 in which the assemblies removably support the magnetic rotor.
7. A flow meter as claimed in claims 1, 2, or 3 in which the distance between the vanes and the nearest edges of the rotor is greater than one-fourth the diameter of the flow meter conduit.
8. A flow meter as claimed in claims 1, 2, or 3 in which the end caps and the main body together define outwardly directed protrusions for mating with the external clamping means.
9. A flow meter as claimed in claims 1, 2, or 3 in which the end caps and the main body together define outwardly directed protrusions for mating with the external clamping means and in which the external clamping means include a band which clamps over the outwardly directed protrusions.
10. A flow meter as claimed in claims 1, 2, or 3 in which seals are arranged between the end caps and the main body.
11. A flow meter as claimed in claims 1, 2, or 3 in which each bearing support assembly includes a carrier bearing and a thrust bearing for supporting the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA255,722A CA1046796A (en) | 1976-06-25 | 1976-06-25 | Flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA255,722A CA1046796A (en) | 1976-06-25 | 1976-06-25 | Flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1046796A true CA1046796A (en) | 1979-01-23 |
Family
ID=4106288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA255,722A Expired CA1046796A (en) | 1976-06-25 | 1976-06-25 | Flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1046796A (en) |
-
1976
- 1976-06-25 CA CA255,722A patent/CA1046796A/en not_active Expired
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