Patent US3880003A successfully refreshed from Google Patents.
US3880003A
Expired / Lapsed
US
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Fluid flowmeter
Assignee: Halliburton Co
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Filing: 1973-11-21
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Granted: 1975-04-29
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Expires: 1993-11-21
Abstract
Abstract A magnetic fluid flowmeter of the turbine type having two bearing supports each holding a bearing, a shaft between the bearings, and a low inertia rotor mounted on the shaft, wherein the upstream support employs a turbulence inducing flat downstream face lying in a plane perpendicular to the direction of fluid flow. The supports, bearings, shaft and rotor are mounted in a turbine cartridge which may be assembled and calibrated at a location remote from a suitable meter body, and then placed in the meter body as desired.
Inventors
- 👤 Douglas L Jameson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:19
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/115
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
A method of measuring fluid flow comprising: introducing a fluid stream into a tubular passageway; passing the fluid stream around a strut fixed within the tubular passageway and having a generally flat downstream face perpendicular to the fluid flow and introducing turbulence into a zone of the fluid stream downstream of said strut; passing the turbulent fluid stream into a rotor having two blades of magnetic material located in said turbulence zone for rotation in response to the fluid flow; and sensing the rotation of the magnetic rotor blades with a magnetic pick-up element.
Claim 2
Independent Claim
94 words
A method of measuring fluid flow comprising: introducing a fluid stream into a tubular passageway; passing the fluid stream around a strut fixed within the tubular passageway and having a generally flat downstream face perpendicular to the fluid flow and introducing turbulence into a zone of the fluid stream downstream of said strut; passing the turbulent fluid stream into a rotor having two blades of magnetic material located in said turbulence zone for rotation in response to the fluid flow; and sensing the rotation of the magnetic rotor blades with a magnetic pick-up element.
Claim 3
Dependent Claim
204 words
A fluid flowmeter comprising: a meter body having a longitudinal passageway formed therethrough having an upstream end portion and a downstream end portion; an upstream strut formed in the upstream end portion of the passageway and extending into the center of the passageway from the wall thereof, said upstream strut including a generally flat downstream face lying in a plane substantially perpendicular to the longitudinal axis of the passageway and dimensioned to cause a zone of turbulence downstream of said upstream strut; a downstream strut formed in the downstream end portion of the passageway and extending into the center of the passageway from the wall thereof; a shaft having a first end and a second end and journaled in the center of the passageway coaxial therewith with the first end thereof rotatably supported by said upstream strut and with the second end thereof rotatably supported by said downstream strut; rotor means having a plurality of magnetic blades carried by said shaft and located in said turbulence zone for rotating in response to the fluid flow through the passageway; and magnetic pick-up means carried by said meter body adjacent to the magnetic blades of said rotor means for sensing the rotation of said rotor means.
Claim 4
Dependent Claim
204 words
A fluid flowmeter comprising: a meter body having a longitudinal passageway formed therethrough having an upstream end portion and a downstream end portion; an upstream strut formed in the upstream end portion of the passageway and extending into the center of the passageway from the wall thereof, said upstream strut including a generally flat downstream face lying in a plane substantially perpendicular to the longitudinal axis of the passageway and dimensioned to cause a zone of turbulence downstream of said upstream strut; a downstream strut formed in the downstream end portion of the passageway and extending into the center of the passageway from the wall thereof; a shaft having a first end and a second end and journaled in the center of the passageway coaxial therewith with the first end thereof rotatably supported by said upstream strut and with the second end thereof rotatably supported by said downstream strut; rotor means having a plurality of magnetic blades carried by said shaft and located in said turbulence zone for rotating in response to the fluid flow through the passageway; and magnetic pick-up means carried by said meter body adjacent to the magnetic blades of said rotor means for sensing the rotation of said rotor means.
Claim 5
Dependent Claim
20 words
The fluid flowmeter as defined in claim 2 wherein said rotor means is characterized further as having two magnetic blades.
Claim 6
Dependent Claim
42 words
The fluid flowmeter as defined in claim 3 wherein the longitudinal passageway through said meter body is cylindrically shaped and the width of the downstream face of said upstream strut is approximately 0.08 times the diameter of the cylindrically shaped longitudinal passageway.
Claim 7
Dependent Claim
320 words
A fluid flowmeter comprising: a meter body having a cylindrical bore formed therein and a transverse opening formed therein intersecting the cylindrical bore; a turbine cartridge having a substantially cylindrically shaped outer surface and slidably received within the cylindrical bore of said meter body, said cartridge having a longitudinal tubular passageway extending therethrough coaxial with the bore, the tubular passageway having an upstream end portion and a downstream end portion and having a transverse opening formed therein intermediate the upstream and downstream end portions communicating between the tubular passageway and the outer surface thereof, said turbine cartridge being positioned within the cylindrical bore with the transverse opening therein in communication with the transverse opening in said meter body; an upstream strut formed in the upstream end portion of the Tubular passageway through said turbine cartridge and extending into the center of the passageway from the wall thereof, said upstream strut including a generally flat downstream face lying in a plane substantially perpendicular to the longitudinal axis of the tubular passageway and dimensioned to cause a zone of turbulence downstream from said upstream strut; a downstream strut formed in the downstream end portion of the tubular passageway and extending into the center of the passageway from the wall thereof; a shaft having a first end and a second end and journaled in the center of the tubular passageway coaxial therewith with the first end thereof rotatably supported by said upstream strut and with the second end thereof rotatably supported by said downstream strut; rotor means having a plurality of magnetic blades carried by said shaft and located in said turbulence zone for rotating in response to fluid flow through the tubular passageway and further located adjacent said communicating transverse openings; and magnetic pick-up means disposed through the transverse opening in said meter body and into the communicating transverse opening in said turbine cartridge for sensing the rotation of said rotor means.
Claim 8
Dependent Claim
320 words
A fluid flowmeter comprising: a meter body having a cylindrical bore formed therein and a transverse opening formed therein intersecting the cylindrical bore; a turbine cartridge having a substantially cylindrically shaped outer surface and slidably received within the cylindrical bore of said meter body, said cartridge having a longitudinal tubular passageway extending therethrough coaxial with the bore, the tubular passageway having an upstream end portion and a downstream end portion and having a transverse opening formed therein intermediate the upstream and downstream end portions communicating between the tubular passageway and the outer surface thereof, said turbine cartridge being positioned within the cylindrical bore with the transverse opening therein in communication with the transverse opening in said meter body; an upstream strut formed in the upstream end portion of the Tubular passageway through said turbine cartridge and extending into the center of the passageway from the wall thereof, said upstream strut including a generally flat downstream face lying in a plane substantially perpendicular to the longitudinal axis of the tubular passageway and dimensioned to cause a zone of turbulence downstream from said upstream strut; a downstream strut formed in the downstream end portion of the tubular passageway and extending into the center of the passageway from the wall thereof; a shaft having a first end and a second end and journaled in the center of the tubular passageway coaxial therewith with the first end thereof rotatably supported by said upstream strut and with the second end thereof rotatably supported by said downstream strut; rotor means having a plurality of magnetic blades carried by said shaft and located in said turbulence zone for rotating in response to fluid flow through the tubular passageway and further located adjacent said communicating transverse openings; and magnetic pick-up means disposed through the transverse opening in said meter body and into the communicating transverse opening in said turbine cartridge for sensing the rotation of said rotor means.
Claim 9
Dependent Claim
20 words
The fluid flowmeter as defined in claim 5 wherein said rotor means is characterized further as having two magnetic blades.
Claim 10
Dependent Claim
42 words
The fluid flowmeter as defined in claim 6 wherein the tubular passageway through said turbine cartridge is cylindrically shaped and the width of the downstream face of said upstream strut is approximately 0.08 times the diameter of the cylindrically shaped tubular passageway.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |