US3894562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow controller
Assignee: Individual
•
Filing: 1973-12-20
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Granted: 1975-07-15
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Expires: 1993-12-20
Abstract
Abstract A device is disclosed which is capable of being inserted in a liquid carrying pipe line for limiting the flow of the liquid to a predetermined rate. The device comprises a housing having a bore extending from an inlet opening to an outlet opening. The bore is divided into three chambers, a convergent chamber, a cavitation chamber, and a diffusing chamber. The shape of the cavitation chamber is such that cavitation of the liquid passing therethrough occurs when the pressure of the liquid entering the inlet opening reaches a predetermined amount. Such cavitation limits the flow rate of liquid through the outlet opening irrespective of an increase in the pressure of the liquid at the inlet opening above the predetermined amount. The diffusing chamber is also shaped to dissipate the cavitation in an area away from the inside surface of the connecting pipe to prevent destruction thereof by the cavitation.
Inventors
- 👤 Jr Charles D Moseley
- 👤 Hal L Moses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:36
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16L55/027; F15; F15D; F15D1/00; F15D1/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
209 words
A device adapted to be inserted in a pipe line for limiting the flow of a liquid through said pipe line to a predetermined rate, said device comprising: a. a housing having a bore extending from an inlet opening to an outlet opening, said bore having a convergent chamber, a cavitation chamber, and a diffusing chamber, said convergent chamber tapering from said inlet opening to one end of said cavitation chamber and said diffusing chamber tapering away from said cavitation chamber to said outlet opening, said cavitation chamber being cylindrical in shape and having a length approximately equal to the diameter thereof such that cavitation of said liquid occurs throughout said cavitation chamber when the pressure of said liquid entering said inlet opening reaches a predetermined amount to thereby limit the rate of flow of said fluid through said outlet opening irrespective of an increase in the pressure of said fluid at said inlet opening above said predetermined amount, and b. the amount of taper of said diffusing chamber away from said cavitation chamber is at most ten degrees with respect to the axis of rotation of said diffusing chamber to thereby insure dissipation of the cavities formed in said fluid before said cavitating fluid exits said outlet opening.
Claim 2
Independent Claim
209 words
A device adapted to be inserted in a pipe line for limiting the flow of a liquid through said pipe line to a predetermined rate, said device comprising: a. a housing having a bore extending from an inlet opening to an outlet opening, said bore having a convergent chamber, a cavitation chamber, and a diffusing chamber, said convergent chamber tapering from said inlet opening to one end of said cavitation chamber and said diffusing chamber tapering away from said cavitation chamber to said outlet opening, said cavitation chamber being cylindrical in shape and having a length approximately equal to the diameter thereof such that cavitation of said liquid occurs throughout said cavitation chamber when the pressure of said liquid entering said inlet opening reaches a predetermined amount to thereby limit the rate of flow of said fluid through said outlet opening irrespective of an increase in the pressure of said fluid at said inlet opening above said predetermined amount, and b. the amount of taper of said diffusing chamber away from said cavitation chamber is at most ten degrees with respect to the axis of rotation of said diffusing chamber to thereby insure dissipation of the cavities formed in said fluid before said cavitating fluid exits said outlet opening.
Claim 3
Dependent Claim
25 words
A device as set forth in claim 1 wherein the length of said cylindrical cavitation chamber is at least the same as the diameter thereof.
Claim 4
Dependent Claim
66 words
A device as set forth in claim 1 wherein said convergent and diffusing chambers are hollow, truncated cones, the largest diameters of said cones forming said inlet and outlet openings, the smallest diameters of which are equal to the diameter of said cavitation chamber, and the largest diameter of said diffusing chamber cone being approximately one and one-half times as great as the smallest diameter thereof.
Claim 5
Dependent Claim
38 words
A device as set forth in claim 1 wherein said diffusing chamber cone tapers away from said cylindrical cavitation chamber at an angle of four degrees with respect to the axis of rotation of said diffusing chamber cone.
Claim 6
Independent Claim
240 words
A device adapted to be inserted in a pipe line for limiting the flow of a liquid through said pipe line to a predetermined rate, said device comprising: a. a housing having a bore extending from an inlet opening to an outlet opening, said bore having a convergent chamber in the shape of a hollow, truncated cone, a hollow cylindrical shaped cavitation chamber, and a diffusing chamber in the shape of a hollow, truncated cone, said convergent chamber tapering from said inlet opening to one end of said cavitation chamber and said diffusing chamber tapering away from said cavitation chamber to said outlet opening, said cavitation chamber having a length approximately equal to the diameter thereof such that cavitation of said liquid occurs throughout said cavitation chamber when the pressure of said liquid entering said inlet opening reaches a predetermined amount to thereby limit the rate of flow through said outlet opening irrespective of an increase in the pressure of said fluid at said inlet opening above said predetermined amount, and b. the amount of taper of said diffusing chamber away from said cavitation chamber is approximately four degrees with respect to the axis of rotation of said diffusing chamber, and the largest diameter of said diffusing chamber cone being approximately 1 1/2 times as great as the smallest diameter thereof to thereby insure dissipation of the cavities formed in said fluid before said cavitating fluid exits said outlet opening.
Claim 7
Independent Claim
240 words
A device adapted to be inserted in a pipe line for limiting the flow of a liquid through said pipe line to a predetermined rate, said device comprising: a. a housing having a bore extending from an inlet opening to an outlet opening, said bore having a convergent chamber in the shape of a hollow, truncated cone, a hollow cylindrical shaped cavitation chamber, and a diffusing chamber in the shape of a hollow, truncated cone, said convergent chamber tapering from said inlet opening to one end of said cavitation chamber and said diffusing chamber tapering away from said cavitation chamber to said outlet opening, said cavitation chamber having a length approximately equal to the diameter thereof such that cavitation of said liquid occurs throughout said cavitation chamber when the pressure of said liquid entering said inlet opening reaches a predetermined amount to thereby limit the rate of flow through said outlet opening irrespective of an increase in the pressure of said fluid at said inlet opening above said predetermined amount, and b. the amount of taper of said diffusing chamber away from said cavitation chamber is approximately four degrees with respect to the axis of rotation of said diffusing chamber, and the largest diameter of said diffusing chamber cone being approximately 1 1/2 times as great as the smallest diameter thereof to thereby insure dissipation of the cavities formed in said fluid before said cavitating fluid exits said outlet opening.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |