US3636765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venturi device
Assignee: Individual
•
Filing: 1969-05-21
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Granted: 1972-01-25
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Expires: 1989-05-21
Abstract
Abstract A compact, high-differential, low-loss, Venturi utilizing a curved upstream approach which is modified to provide a protrusion extending into the venturi in the convergent section thereof immediately upstream of the low-pressure tap. The protrusion extends into said venturi less than the Boundary layer thickness of the fluid flowing in the device thereby creating and constantly maintaining a turbulent action of the boundary layer in the localized area of the low-pressure tap, regardless of flow rate of flow conditions and a recovery section tangential or in continuous surface relation thereto.
Inventors
- 👤 William R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:53
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/40; G01F1/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A device for sensing pressure in a line having fluid flowing therein, comprising: a curvilinear Venturi in said line having a low pressure tap communicating with said fluid; and obstruction means providing a constant turbulent boundary layer in the fluid flowing through said Venturi in the locale of said pressure tap, said means comprising a protrusion extending into said Venturi in the convergent section thereof immediately upstream of said lowpressure tap.
Claim 2
Independent Claim
71 words
A device for sensing pressure in a line having fluid flowing therein, comprising: a curvilinear Venturi in said line having a low pressure tap communicating with said fluid; and obstruction means providing a constant turbulent boundary layer in the fluid flowing through said Venturi in the locale of said pressure tap, said means comprising a protrusion extending into said Venturi in the convergent section thereof immediately upstream of said lowpressure tap.
Claim 3
Dependent Claim
31 words
The invention of claim 1 wherein said obstruction means comprises a protrusion extending into said device a distance less than the boundary layer thickness for the fluid flowing in the device.
Claim 4
Dependent Claim
25 words
The invention of claim 1 wherein said protrusion is wider in the transverse direction than the opening of the tap taken in the same direction.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |