US4655090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine flowmeter for fluids
Assignee: Sato Electronique SA
•
Filing: 1986-05-05
•
Granted: 1987-04-07
•
Expires: 2006-05-05
Abstract
Abstract A turbine flowmeter for fluids of the type comprises a turbine rotatable in a chamber of circular section equipped with an admission orifice substantially tangential to the said chamber and with an outlet orifice, the said chamber comprising a plurality of axial recesses creating a turbulence within the chamber. The admission orifice opens into one of the lateral walls of one of the said recesses of the chamber in such manner that at least a part of the fluid flow comes to strike upon the opposite lateral wall of the said recess.
Inventors
- 👤 Alain Rousseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:38
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A turbine flowmeter for fluids comprising (a) a casing having a chamber of substantially circular section into which there open an admission orifice substantially tangential to the said chamber and an outlet orifice, (b) a turbine equipped with blades rotatable in said chamber about the axis of said chamber under the action of the fluid passing through the chamber from the admission orifice to the outlet orifice, (c) means for measurement of the speed of rotation of the rotor, the wall of the said chamber adjacent to the extremities of the turbine blades being equipped with recesses substantially parallel to the axis of the chamber and creating a turbulence in the fluid flow through the chamber, each recess having opposite lateral walls said admission orifice opening into one of the lateral walls of one of the said recesses of the chamber in such manner that at least a part of the fluid flow comes to strike upon the opposite lateral wall of the one of the said recesses.
Claim 2
Dependent Claim
168 words
A turbine flowmeter for fluids comprising (a) a casing having a chamber of substantially circular section into which there open an admission orifice substantially tangential to the said chamber and an outlet orifice, (b) a turbine equipped with blades rotatable in said chamber about the axis of said chamber under the action of the fluid passing through the chamber from the admission orifice to the outlet orifice, (c) means for measurement of the speed of rotation of the rotor, the wall of the said chamber adjacent to the extremities of the turbine blades being equipped with recesses substantially parallel to the axis of the chamber and creating a turbulence in the fluid flow through the chamber, each recess having opposite lateral walls said admission orifice opening into one of the lateral walls of one of the said recesses of the chamber in such manner that at least a part of the fluid flow comes to strike upon the opposite lateral wall of the one of the said recesses.
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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |